[ { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Amethyst", "title": "Wikipedia: Amethyst" } ], "names": [ "Amethyst" ], "chemicalFormula": "SiO2", "properties": [ { "scalars": [ { "value": "Quartz" } ], "name": "Category" }, { "scalars": [ { "value": "Purple, violet" } ], "name": "Color" }, { "scalars": [ { "value": "6-sided prism ending in 6-sided pyramid" } ], "conditions": [ { "scalars": [ { "value": "typical" } ], "name": "Note" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "rhombohedral class 32" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Dauphine law, Brazil law, and Japan law" } ], "name": "Twinning" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "7-lower in impure varieties" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous/glossy" } ], "name": "Luster" }, { "scalars": [ { "value": "1.543-1.553" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.552-1.554" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "+0.009" } ], "conditions": [ { "scalars": [ { "value": "B-G interval" } ], "name": "Note" } ], "name": "Birefringence" }, { "scalars": [ { "value": "None" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.65 constant" }, { "value": "variable in impure varieties" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1650$\\pm$75" } ], "units": "$^{\\circ}$C", "name": "Melting point" }, { "scalars": [ { "value": "insoluble in common solvents" } ], "name": "Solubility" }, { "scalars": [ { "value": "Piezoelectric" } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Agate", "title": "Wikipedia: Agate" } ], "names": [ "Agate" ], "chemicalFormula": "SiO2", "properties": [ { "scalars": [ { "value": "Quartz variety" } ], "name": "Category" }, { "scalars": [ { "value": "White-grey, light blue, orange-red, black. banded" } ], "name": "Color" }, { "scalars": [ { "value": "Cryp-crystalline silica" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Rhombohedral Microcrystalline" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal with very sharp edges." } ], "name": "Fracture" }, { "scalars": [ { "value": "6.5-7" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Waxy" } ], "name": "Luster" }, { "scalars": [ { "value": "1.530-1.540" } ], "name": "Refractive index" }, { "scalars": [ { "value": "up-+0.004 (B-G)" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Absent" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.58-2.64" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Amazonite", "title": "Wikipedia: Amazonite" } ], "names": [ "Amazonite" ], "chemicalFormula": "SiO2", "properties": [ { "scalars": [ { "value": "Feldspar variety" } ], "name": "Category" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Analcime", "title": "Wikipedia: Analcime" } ], "names": [ "Analcime" ], "chemicalFormula": "NaAlSi$_{2}$O$_{6}$.H$_{2}$O", "properties": [ { "scalars": [ { "value": "Zeolite" } ], "name": "Category" }, { "scalars": [ { "value": "09.GB.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "White, colorless, gray, pink, greenish, yellowish" } ], "name": "Color" }, { "scalars": [ { "value": "Typically in crystals, usually trapezohedrons, also massive-granular." } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Cubic, tetragonal, orthorhombic, or monoclinic, pseudocubic, with degree of ordering." } ], "name": "Crystal system" }, { "scalars": [ { "value": "Polysynthetic on [001], [110]" } ], "name": "Twinning" }, { "scalars": [ { "value": "Very poor [100]" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven-subconchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "5-5.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.479-1.493" } ], "name": "Refractive index (n)" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.24-2.29" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "3.5" } ], "name": "Fusibility" }, { "scalars": [ { "value": "Weakly piezoelectric, weakly electrostatic when rubbed or heated." } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Amblygonite", "title": "Wikipedia: Amblygonite" } ], "names": [ "Amblygonite" ], "chemicalFormula": "(Li,Na)AlPO$_{4}$(F,OH)", "properties": [ { "scalars": [ { "value": "Phosphate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.BB.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Generally white or creamy, but can also be colorless or pale yellow, green, blue, beige, gray, brown or pink." } ], "name": "Color" }, { "scalars": [ { "value": "Prismatic-columnar form" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Triclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Microscopic polysynthetic twinning common" } ], "name": "Twinning" }, { "scalars": [ { "value": "[100] Perfect, [110] Good, [011] Distinct" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Irregular/Uneven,Sub-Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "5.5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-pearly" } ], "name": "Luster" }, { "scalars": [ { "value": "greasy-vitreous" } ], "conditions": [ { "scalars": [ { "value": "in gem material" } ], "name": "Note" } ], "name": "Polish" }, { "scalars": [ { "value": "1.577-1.591" } ], "name": "Refractive index (n$_{a}$)" }, { "scalars": [ { "value": "1.592-1.605" } ], "name": "Refractive index (n$_{b}$)" }, { "scalars": [ { "value": "1.596-1.613" } ], "name": "Refractive index (n$_{c}$)" }, { "scalars": [ { "value": ".020-.027" } ], "name": "Birefringence" }, { "scalars": [ { "value": "weak-none" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "very weak green in long wave, light blue phosphorescence in long wave and short wave" } ], "name": "fluorescence" }, { "scalars": [ { "value": "2.98-3.11" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Beryl", "title": "Wikipedia: Beryl" } ], "names": [ "Beryl" ], "chemicalFormula": "Be$_{3}$Al$_{2}$Si$_{6}$O$_{18}$", "properties": [ { "scalars": [ { "value": "Cyclosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.CJ.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "9.21" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "9.19" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "537.50" } ], "name": "Molecular weight" }, { "scalars": [ { "value": "Green, blue, yellow, colorless, pink and others" } ], "name": "Color" }, { "scalars": [ { "value": "Prismatic-tabular crystals, radial, columnar, granular-compact massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Hexagonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Rare" } ], "name": "Twinning" }, { "scalars": [ { "value": "Imperfect on {0001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal-irregular" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "7.5-8" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-resinous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.564-1.595" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.568-1.602" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.0040-0.0070" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Weak-distinct" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "None . Morganite has weak violet fluorescence." } ], "conditions": [ { "scalars": [ { "value": "some fracture filling materials used-improve emerald's clarity do fluoresce, but the s-ne itself does not" } ], "name": "Note" } ], "name": "fluorescence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.76" } ], "conditions": [ { "scalars": [ { "value": "average" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "6/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 6/mmc" } ], "name": "Space group" }, { "scalars": [ { "value": "Hexagonal dihexagonal dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Biotite", "title": "Wikipedia: Biotite" } ], "names": [ "Biotite" ], "chemicalFormula": "K(Mg,Fe)3(AlSi3O10)(F,OH)2", "properties": [ { "scalars": [ { "value": "Dark mica series" } ], "name": "Category" }, { "scalars": [ { "value": "433.53" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "Dark brown, greenish-brown, blackish-brown, yellow, white" } ], "name": "Color" }, { "scalars": [ { "value": "Massive-platy" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic (2/m) , Space Group: C 2/m" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Common on the [310], , less common on the {001}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on the {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Micaceous" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle-flexible, elastic" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2.5-3.0" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-pearly" } ], "name": "Luster" }, { "scalars": [ { "value": "1.565-1.625" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.605-1.675" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.605-1.675" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.03-0.07" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Strong" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "None" } ], "name": "fluorescence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.7-3.1" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.8-3.4" } ], "name": "Density" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Corundum", "title": "Wikipedia: Corundum" } ], "names": [ "Corundum" ], "chemicalFormula": "Al2O3", "properties": [ { "scalars": [ { "value": "Oxide mineral-Hematite group" } ], "name": "Category" }, { "scalars": [ { "value": "04.CB.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "4.3.1.1" } ], "name": "Dana classification" }, { "scalars": [ { "value": "4.75" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "12.982" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "6" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless, gray, brown, pink-red, orange, yellow, green, blue, violet, may be color zoned, asteriated mainly grey and brown" } ], "name": "Color" }, { "scalars": [ { "value": "Steep bipyramidal, tabular, prismatic, rhombohedral crystals, massive or granular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal(Hexagonal Scalenohedral) , Symbol ($\\bar{3}$2/m) , Space group R$\\bar{3}$c" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Polysynthetic twinning common" } ], "name": "Twinning" }, { "scalars": [ { "value": "None-parting in 3 directions" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "Conchoidal-uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "9" } ], "conditions": [ { "scalars": [ { "value": "defining mineral" } ], "name": "Note" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine-vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.767-1.772" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.759-1.763" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "None" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.95-4.10" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2044" } ], "units": "$^{\\circ}$C", "name": "Melting point" }, { "scalars": [ { "value": "Infusible" } ], "name": "Fusibility" }, { "scalars": [ { "value": "Insoluble" } ], "name": "Solubility" }, { "scalars": [ { "value": "May fluoresce or phosphoresce under UV light" } ], "name": "Other" }, { "scalars": [ { "value": "Trigonal ($\\bar{3}$2/m)" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Emerald", "title": "Wikipedia: Emerald" } ], "names": [ "Emerald" ], "chemicalFormula": "Be$_{3}$Al$_{2}$(SiO$_{3}$)$_{6}$", "properties": [ { "scalars": [ { "value": "Beryl variety" } ], "name": "Category" }, { "scalars": [ { "value": "9.21" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "9.19" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Green shades-colorless" } ], "name": "Color" }, { "scalars": [ { "value": "Massive-well Crystalline" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Hexagonal (6/m 2/m 2/m) Space group: P6/m\\xd1\\x81c" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Imperfect on the [0001]" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "7.5-8" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.564-1.595" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.568-1.602" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.0040-0.0070" } ], "name": "Birefringence" }, { "scalars": [ { "value": "None" } ], "conditions": [ { "scalars": [ { "value": "some fracture filling materials used-improve emerald's clarity do fluoresce, but the s-ne itself does not" } ], "name": "Note" } ], "name": "fluorescence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.76" } ], "conditions": [ { "scalars": [ { "value": "average" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "(6/m 2/m 2/m)-Dihexagonal Dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Graphite", "title": "Wikipedia: Graphite" } ], "names": [ "Graphite" ], "chemicalFormula": "C", "properties": [ { "scalars": [ { "value": "Native element mineral" } ], "name": "Category" }, { "scalars": [ { "value": "01.CB.05a" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "2.461" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "6.708" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Iron-black-steel-gray, deep blue in transmitted light" } ], "name": "Color" }, { "scalars": [ { "value": "Tabular, six-sided foliated masses, granular-compacted masses" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Hexagonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Present" } ], "name": "Twinning" }, { "scalars": [ { "value": "Basal-perfect on {0001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Flaky, otherwise rough when not on cleavage" } ], "name": "Fracture" }, { "scalars": [ { "value": "Flexible non-elastic, sectile" } ], "name": "Tenacity" }, { "scalars": [ { "value": "1-2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic, earthy" } ], "name": "Luster" }, { "scalars": [ { "value": "Strong" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Black" } ], "name": "Streak" }, { "scalars": [ { "value": "2.09-2.23" } ], "units": "g/cm$^3$", "name": "Density" }, { "scalars": [ { "value": "Molten Ni" } ], "name": "Solubility" }, { "scalars": [ { "value": "strongly anisotropic, electric conductor, greasy feel, readily marks" } ], "name": "Other" }, { "scalars": [ { "value": "6/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 6$_{3}$/mmc" } ], "name": "Space group" }, { "scalars": [ { "value": "Hexagonal dihexagonal dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Gypsum", "title": "Wikipedia: Gypsum" } ], "names": [ "Gypsum" ], "chemicalFormula": "CaSO$_{4}$.2H$_{2}$O", "properties": [ { "scalars": [ { "value": "Sulfate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "07.CD.40" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.679(5)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "15.202(14)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.522(6)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "118.43" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless-white, may be yellow, tan, blue, pink, brown, reddish brown or gray due-impurities" } ], "name": "Color" }, { "scalars": [ { "value": "Massive, flat. Elongated and generally prismatic crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic 2/m-Prismatic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Very common on {110}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {010}, distinct on {100}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal on {100}, splintery parallel-[001]" } ], "name": "Fracture" }, { "scalars": [ { "value": "Flexible, inelastic." } ], "name": "Tenacity" }, { "scalars": [ { "value": "1.5-2" } ], "conditions": [ { "scalars": [ { "value": "defining mineral for 2" } ], "name": "Note" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-silky, pearly, or waxy" } ], "name": "Luster" }, { "scalars": [ { "value": "1.519-1.521" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.522-1.523" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.529-1.530" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.010" } ], "name": "Birefringence" }, { "scalars": [ { "value": "None" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.31-2.33" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "5" } ], "name": "Fusibility" }, { "scalars": [ { "value": "Hot, dilute HCl" } ], "name": "Solubility" }, { "scalars": [ { "value": "Monoclinic 2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Hematite", "title": "Wikipedia: Hematite" } ], "names": [ "Hematite" ], "chemicalFormula": "iron(III) oxide, Fe$_{2}$O$_{3}$, $\\alpha$-Fe$_{2}$O$_{3}$", "properties": [ { "scalars": [ { "value": "Oxide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "04.CB.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.038(2)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "13.772(12)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "6" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Metallic gray, dull-bright red" } ], "name": "Color" }, { "scalars": [ { "value": "Tabular-thick crystals, micaceous or platy, commonly in rosettes, radiating fibrous, reniform, botryoidal or stalactitic masses, columnar, earthy, granular, oolitic" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Penetration and lamellar" } ], "name": "Twinning" }, { "scalars": [ { "value": "None, may show partings on {0001} and {10$\\bar{1}$1}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven-sub-conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5.5-6.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic-splendent" } ], "name": "Luster" }, { "scalars": [ { "value": "3.150-3.220" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "2.870-2.940" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.280" } ], "name": "Birefringence" }, { "scalars": [ { "value": "O=brownish red, E=yellowish red" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Bright red-dark red" } ], "name": "Streak" }, { "scalars": [ { "value": "5.26" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "$\\bar{3}$2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "R$\\bar{3}$c" } ], "name": "Space group" }, { "scalars": [ { "value": "Trigonal hexagonal scalenohedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Kainite", "title": "Wikipedia: Kainite" } ], "names": [ "Kainite" ], "chemicalFormula": "KMg(SO$_{4}$)Cl.3H$_{2}$O", "properties": [ { "scalars": [ { "value": "Sulfate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "07.DF.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "19.72" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "16.23" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "9.53" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "94.92" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "Colorless, yellow, brownish, greyish-green, red, violet, blue" } ], "name": "Color" }, { "scalars": [ { "value": "Crystal aggregates, fibrous, massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{001}, perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Splintery" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2.5-3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.15" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.494" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.505" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.516" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.022" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Visible: X=violet, Y=blue, Z=yellowish" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "C 2/m" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Kaolinite", "title": "Wikipedia: Kaolinite" } ], "names": [ "Kaolinite" ], "chemicalFormula": "Al$_{2}$Si$_{2}$O$_{5}$(OH)$_{4}$", "properties": [ { "scalars": [ { "value": "Phyllosilicates, Kaolinite-serpentine group" } ], "name": "Category" }, { "scalars": [ { "value": "09.ED.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.13" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8.89" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "7.25" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "90" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\alpha$)" }, { "scalars": [ { "value": "104.5" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "89.8" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\gamma$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "White, sometimes red, blue or brown tints from impurities" } ], "name": "Color" }, { "scalars": [ { "value": "Rarely as crystals, thin plates or stacked, More commonly as microscopic pseudohexagonal plates and clusters of plates, aggregated in-compact, claylike masses" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Triclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Flexible but inelastic" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2-2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Pearly-dull earthy" } ], "name": "Luster" }, { "scalars": [ { "value": "1.553-1.565" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.559-1.569" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.569-1.570" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.16-2.68" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P1" } ], "name": "Space group" }, { "scalars": [ { "value": "Triclinic pedial" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Kyanite", "title": "Wikipedia: Kyanite" } ], "names": [ "Kyanite" ], "chemicalFormula": "Al$_{2}$SiO$_{5}$", "properties": [ { "scalars": [ { "value": "Nesosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "7.1262(12)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "7.852(10)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.5724(10)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "89.99(2)" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\alpha$)" }, { "scalars": [ { "value": "101.11(2)" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "106.03(1)" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\gamma$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Blue, white, rarely green, gray, yellow, pink, orange, and black, can be zoned" } ], "name": "Color" }, { "scalars": [ { "value": "Columnar, fibrous, bladed" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Triclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Lamellar on {100}" } ], "name": "Twinning" }, { "scalars": [ { "value": "[100] perfect [010] imperfect with 79$^{\\circ}$ angle between" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Splintery" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "4.5-5 parallel-one axis , 6.5-7 perpendicular-that axis" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-pearly" } ], "name": "Luster" }, { "scalars": [ { "value": "1.712-1.718" } ], "name": "Refractive index (n$\\alpha$)" }, { "scalars": [ { "value": "1.720-1.725" } ], "name": "Refractive index (n$\\beta$)" }, { "scalars": [ { "value": "1.727-1.734" } ], "name": "Refractive index (n$\\gamma$)" }, { "scalars": [ { "value": "Trichroic, colorless-pale blue-blue" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.53-3.65" }, { "value": "3.67" } ], "conditions": [ { "scalars": [ { "value": "measured" }, { "value": "calculated" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "P$\\bar{1}$" } ], "name": "Space group" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Lonsdaleite", "title": "Wikipedia: Lonsdaleite" } ], "names": [ "Lonsdaleite" ], "chemicalFormula": "C", "properties": [ { "scalars": [ { "value": "01.CB.10b" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "2.51" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "4.12" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Gray in crystals, pale yellowish-brown in broken fragments" } ], "name": "Color" }, { "scalars": [ { "value": "Cubes in fine-grained aggregates" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Hexagonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "7-8" } ], "conditions": [ { "scalars": [ { "value": "for impure specimens" } ], "name": "Note" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine" } ], "name": "Luster" }, { "scalars": [ { "value": "3.2" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.404" } ], "name": "Refractive index (n)" }, { "scalars": [ { "value": "6/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 6$_{3}$/mmc" } ], "name": "Space group" }, { "scalars": [ { "value": "Hexagonal dihexagonal dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Mica", "title": "Wikipedia: Mica" } ], "names": [ "Mica" ], "chemicalFormula": "AB2-3(X, Si)4O10(O, F, OH)2", "properties": [ { "scalars": [ { "value": "Mineral silicates" } ], "name": "Category" }, { "scalars": [ { "value": "purple, rosy, silver, gray , dark green, brown, black , yellowish-brown, green white , colorless, transparent (muscovite)" } ], "conditions": [ { "scalars": [ { "value": "lepidolite" }, { "value": "biotite" }, { "value": "phlogopite" } ], "name": "Note" } ], "name": "Color" }, { "scalars": [ { "value": "perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "flaky" } ], "name": "Fracture" }, { "scalars": [ { "value": "2.5-4 , 2.5-3 biotite, 2.5-3 phlogopite, 2-2.5 muscovite" } ], "conditions": [ { "scalars": [ { "value": "lepidolite" } ], "name": "Note" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "pearly, vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "White, colorless" } ], "name": "Streak" }, { "scalars": [ { "value": "2.8-3.1" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "700-1000" } ], "units": "$^{\\circ}$C", "name": "Melting point" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Muscovite", "title": "Wikipedia: Muscovite" } ], "names": [ "Muscovite" ], "chemicalFormula": "KAl$_{2}$(AlSi$_{3}$O$_{10}$)(F,OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Silicate mineral Phyllosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.EC.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "71.02.02a.01" } ], "name": "Dana classification" }, { "scalars": [ { "value": "5.199" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "9.027" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "20.106" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "95.78" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "White, grey, silvery" } ], "name": "Color" }, { "scalars": [ { "value": "Massive-platy" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic (2/m), space group C 2/m" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Common on the [310], less common on the {001}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on the {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Micaceous" } ], "name": "Fracture" }, { "scalars": [ { "value": "Elastic" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2-2.5 parallel-{001} , 4 right angle-{001}" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, silky, pearly" } ], "name": "Luster" }, { "scalars": [ { "value": "1.552-1.576" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.582-1.615" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.587-1.618" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.035-0.042" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Weak when colored" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "None" } ], "name": "fluorescence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.76-3" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2/m-prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Obsidian", "title": "Wikipedia: Obsidian" } ], "names": [ "Obsidian" ], "chemicalFormula": "70-75% SiO$_{2}$, plus MgO, Fe$_{3}$O$_{4}$", "properties": [ { "scalars": [ { "value": "Volcanic glass" } ], "name": "Category" }, { "scalars": [ { "value": "Deep black or blackish green" } ], "name": "Color" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "~2.4" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Pearl", "title": "Wikipedia: Pearl" } ], "names": [ "Pearl" ], "chemicalFormula": "CaCO$_{3}$", "properties": [ { "scalars": [ { "value": "white, pink, silver, cream, brown, green, blue, black, and yellow" } ], "name": "Color" }, { "scalars": [ { "value": "one" } ], "name": "Cleavage" }, { "scalars": [ { "value": ".5-4.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "white" } ], "name": "Streak" }, { "scalars": [ { "value": "2.60-2.85" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "weak, cannot be evaluated. Genuine black p .: Red-reddish River-p.: Strong: pale green" } ], "name": "fluorescence" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Quartz", "title": "Wikipedia: Quartz" } ], "names": [ "Quartz" ], "chemicalFormula": "SiO$_{2}$", "properties": [ { "scalars": [ { "value": "Silicate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "04.DA.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "75.01.03.01" } ], "name": "Dana classification" }, { "scalars": [ { "value": "4.9133" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.4053" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "3" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless through various colors-black" } ], "name": "Color" }, { "scalars": [ { "value": "6-sided prism ending in 6-sided pyramid , drusy, fine-grained-microcrystalline, massive" } ], "conditions": [ { "scalars": [ { "value": "typical" } ], "name": "Note" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "$\\alpha$-quartz: trigonal trapezohedral class 3 2, $\\beta$-quartz: hexagonal 622" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Common Dauphine law, Brazil law and Japan law" } ], "name": "Twinning" }, { "scalars": [ { "value": "{0110} Indistinct" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "7-lower in impure varieties" } ], "conditions": [ { "scalars": [ { "value": "defining mineral" } ], "name": "Note" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-waxy-dull when massive" } ], "name": "Luster" }, { "scalars": [ { "value": "1.543-1.545" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.552-1.554" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "+0.009" } ], "conditions": [ { "scalars": [ { "value": "B-G interval" } ], "name": "Note" } ], "name": "Birefringence" }, { "scalars": [ { "value": "None" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.65" }, { "value": "variable 2.59-2.63 in impure varieties" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1670" } ], "units": "$^{\\circ}$C 1713 $^{\\circ}$C", "conditions": [ { "scalars": [ { "value": "$\\beta$ tridymite" }, { "value": "$\\beta$ cris-balite" } ], "name": "Note" } ], "name": "Melting point" }, { "scalars": [ { "value": "Insoluble at STP, 1 ppm$_{mass}$ at 400 $^{\\circ}$C and 500 lb/in$^{2}$-2600 ppm$_{mass}$ at 500 $^{\\circ}$C and 1500 lb/in$^{2}$" } ], "name": "Solubility" }, { "scalars": [ { "value": "Piezoelectric, may be triboluminescent, chiral" } ], "conditions": [ { "scalars": [ { "value": "hence optically active if not racemic" } ], "name": "Note" } ], "name": "Other" }, { "scalars": [ { "value": "Trigonal 32" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Spinel", "title": "Wikipedia: Spinel" } ], "names": [ "Spinel" ], "chemicalFormula": "MgAl$_{2}$O$_{4}$", "properties": [ { "scalars": [ { "value": "Oxide minerals, Spinel group, Spinel structural group" } ], "name": "Category" }, { "scalars": [ { "value": "04.BB.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Various, red and pink-blue-mauve, dark green, brown, black" } ], "name": "Color" }, { "scalars": [ { "value": "Cubic, octahedral" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Isometric" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Indistinct" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal, uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "7.5-8.0" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.719" } ], "name": "Refractive index" }, { "scalars": [ { "value": "Absent" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.6-4.1" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "none" } ], "name": "Solubility" }, { "scalars": [ { "value": "Nonmagnetic, non-radioactive, sometimes fluorescent (red)" } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Sapphire", "title": "Wikipedia: Sapphire" } ], "names": [ "Sapphire" ], "chemicalFormula": "Aluminium oxide Al$_{2}$O$_{3}$", "properties": [ { "scalars": [ { "value": "Oxide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "Typically blue, but varies" } ], "name": "Color" }, { "scalars": [ { "value": "As crystals, massive and granular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal, Symbol ($\\bar{3}$2/m) , Space Group: R$\\bar{3}$c" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Conchoidal, splintery" } ], "name": "Fracture" }, { "scalars": [ { "value": "9.0" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.768-1.772" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.760-1.763" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "Birefringence" } ], "name": "Refractive index" }, { "scalars": [ { "value": "0.008" } ], "name": "Refractive index" }, { "scalars": [ { "value": "Strong" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "3.95-4.03" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2,030-2,050" } ], "units": "$^{\\circ}$C", "name": "Melting point" }, { "scalars": [ { "value": "Infusible" } ], "name": "Fusibility" }, { "scalars": [ { "value": "Insoluble" } ], "name": "Solubility" }, { "scalars": [ { "value": "Coefficient of thermal expansion x10$^{-6}$/K ," } ], "conditions": [ { "scalars": [ { "value": "5.0-6.6" } ], "name": "Note" } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Titanite", "title": "Wikipedia: Titanite" } ], "names": [ "Titanite" ], "chemicalFormula": "CaTiSiO$_{5}$", "properties": [ { "scalars": [ { "value": "nesosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "9.AG.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "7.057" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8.707" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.555" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "113.81" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Flattened wedge-shaped crystals, also massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Contact and penetration on {100}, lamellar on {221}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Distinct on [110], parting on {221}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Sub-conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "5-5.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Reddish white" } ], "name": "Streak" }, { "scalars": [ { "value": "3.48-3.60" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.843-1.950" } ], "name": "Refractive index (n$\\alpha$)" }, { "scalars": [ { "value": "1.870-2.034" } ], "name": "Refractive index (n$\\beta$)" }, { "scalars": [ { "value": "1.943-2.110" } ], "name": "Refractive index (n$\\gamma$)" }, { "scalars": [ { "value": "0.100-0.160" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Strong: X=nearly colorless, Y=yellow-green, Z=red-yellow-orange" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Radioactive-may be metamict" } ], "name": "Other" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 2$_{1}$/a" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Topaz", "title": "Wikipedia: Topaz" } ], "names": [ "Topaz" ], "chemicalFormula": "Al$_{2}$SiO$_{4}$(F,OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Silicate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "9.AF.35" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "4.65" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8.8" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "8.4" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless , blue, brown, orange, gray, yellow, green, pink and reddish pink" } ], "conditions": [ { "scalars": [ { "value": "if no impurities" } ], "name": "Note" } ], "name": "Color" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Prismatic crystals with faces striated parallel-long dimension, also columnar, compact, massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "[001] Perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Subconchoidal-uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "8" } ], "conditions": [ { "scalars": [ { "value": "defining mineral" } ], "name": "Note" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.606-1.629" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.609-1.631" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.616-1.638" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.010" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Weak in thick sections X=yellow, Y=yellow, violet, reddish, Z=violet, bluish, yellow, pink" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Short UV=golden yellow, Long UV=cream" } ], "name": "fluorescence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.49-3.57" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "Pbnm" } ], "name": "Space group" }, { "scalars": [ { "value": "Orthorhombic dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Talc", "title": "Wikipedia: Talc" } ], "names": [ "Talc" ], "chemicalFormula": "Mg$_{3}$Si$_{4}$O$_{10}$(OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Silicate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "5.291" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "9.173" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.290" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "98.68" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\alpha$)" }, { "scalars": [ { "value": "119.90" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "90.09" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\gamma$)" }, { "scalars": [ { "value": "2 or" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "5.287" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "9.158" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "18.95" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "99.3" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "9.EC.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Light-dark green, brown, white, grey" } ], "name": "Color" }, { "scalars": [ { "value": "Foliated-fibrous masses, rare as platey-pyramidal crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "monoclinic or triclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {001} basal cleavage" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Flat surfaces , fracture in an uneven pattern" } ], "conditions": [ { "scalars": [ { "value": "not cleavage" } ], "name": "Note" } ], "name": "Fracture" }, { "scalars": [ { "value": "Sectile" } ], "name": "Tenacity" }, { "scalars": [ { "value": "1" } ], "conditions": [ { "scalars": [ { "value": "defining mineral" } ], "name": "Note" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Waxlike or pearly" } ], "name": "Luster" }, { "scalars": [ { "value": "1.538-1.550" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.589-1.594" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.589-1.600" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.051" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Weak in dark varieties" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White-pearl black" } ], "name": "Streak" }, { "scalars": [ { "value": "2.58-2.83" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Short UV=orange yellow, long UV=yellow" } ], "name": "fluorescence" }, { "scalars": [ { "value": "Either monoclinic 2m or triclinic $\\bar{1}$" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Tourmaline", "title": "Wikipedia: Tourmaline" } ], "names": [ "Tourmaline" ], "chemicalFormula": "(Ca,K,Na,[])(Al,Fe,Li,Mg,Mn)$_{3}$(Al,Cr, Fe,V)$_{6}$(BO$_{3}$)$_{3}$(Si,Al,B)$_{6}$O$_{18}$(OH,F)$_{4}$", "properties": [ { "scalars": [ { "value": "Cyclosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "Most commonly black, but can range from colorless, brown, violet, yellow, orange, blue, red, green, pink, or bi-colored, or even tri-colored." } ], "name": "Color" }, { "scalars": [ { "value": "Parallel and elongated. Acicular prisms, sometimes radiating. Massive. Scattered grains ." } ], "conditions": [ { "scalars": [ { "value": "in granite" } ], "name": "Note" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Indistinct" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven, small conchoidal, brittle" } ], "name": "Fracture" }, { "scalars": [ { "value": "7-7.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, sometimes resinous" } ], "name": "Luster" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Polish" }, { "scalars": [ { "value": "1.635-1.675" } ], "name": "Refractive index (n$\\omega$)" }, { "scalars": [ { "value": "1.610-1.650" } ], "name": "Refractive index (n$\\epsilon$)" }, { "scalars": [ { "value": "-0.018--0.040, typically about .020 but in dark s-nes it may reach .040" } ], "name": "Birefringence" }, { "scalars": [ { "value": "typically moderate-strong, Red Tourmaline: Definite, dark red,light red, Green Tourmaline: Strong, dark green, yellow-green, Brown Tourmaline: Definite, dark brown, light brown, Blue Tourmaline: Strong, dark blue, light blue" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "pink s-nes-inert-very weak red-violet in long and short wave" } ], "name": "fluorescence" }, { "scalars": [ { "value": "a strong narrow band at 498 nm, and almost complete absorption of red down-640nm in blue and green s-nes, red and pink s-nes show lines at 458 and 451nm as well as a broad band in the green spectrum" } ], "name": "absorption" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.06" } ], "conditions": [ { "scalars": [ { "value": "+.20-.06" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.82-3.32" } ], "name": "Density" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Garnet", "title": "Wikipedia: Garnet" } ], "names": [ "Garnet" ], "chemicalFormula": "(Ca,K,Na,[])(Al,Fe,Li,Mg,Mn)$_{3}$(Al,Cr, Fe,V)$_{6}$(BO$_{3}$)$_{3}$(Si,Al,B)$_{6}$O$_{18}$(OH,F)$_{4}$", "properties": [ { "scalars": [ { "value": "Nesosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "virtually all colors, blue very rare" } ], "name": "Color" }, { "scalars": [ { "value": "Rhombic dodecahedron or cubic" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "isometric/Cubic rhombic dodecahedron, icositetrahedron" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Indistinct" } ], "name": "Cleavage" }, { "scalars": [ { "value": "conchoidal-uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "6.5-7.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "vitreous-resinous" } ], "name": "Luster" }, { "scalars": [ { "value": "vitreous-subadamantine" } ], "name": "Polish" }, { "scalars": [ { "value": "1.72-1.94" } ], "name": "Refractive index" }, { "scalars": [ { "value": "None" } ], "name": "Birefringence" }, { "scalars": [ { "value": "None" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.1-4.3" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "variable" } ], "name": "fluorescence" }, { "scalars": [ { "value": "variable magnetic attraction" } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Feldspar", "title": "Wikipedia: Feldspar" } ], "names": [ "Feldspar" ], "chemicalFormula": "KAlSi$_{3}$O$_{8}$ - NaAlSi$_{3}$O$_{8}$ - CaAl$_{2}$Si$_{2}$O$_{8}$", "properties": [ { "scalars": [ { "value": "tec-silicate" } ], "name": "Category" }, { "scalars": [ { "value": "pink, white, gray, brown" } ], "name": "Color" }, { "scalars": [ { "value": "triclinic or monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "two or three" } ], "name": "Cleavage" }, { "scalars": [ { "value": "along cleavage planes" } ], "name": "Fracture" }, { "scalars": [ { "value": "6.0-6.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.518-1.526" } ], "name": "Refractive index" }, { "scalars": [ { "value": "first order" } ], "name": "Birefringence" }, { "scalars": [ { "value": "none" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "white" } ], "name": "Streak" }, { "scalars": [ { "value": "2.55-2.76" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.56" } ], "name": "Density" }, { "scalars": [ { "value": "exsolution lamellae common" } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Prehnite", "title": "Wikipedia: Prehnite" } ], "names": [ "Prehnite" ], "chemicalFormula": "Ca$_{2}$Al(AlSi$_{3}$O$_{10}$)(OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Silicate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "09.DP.20" } ], "conditions": [ { "scalars": [ { "value": "Inosilicate transitional-phyllosilicate" } ], "name": "Note" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "72.1.3.1" } ], "conditions": [ { "scalars": [ { "value": "Phyllosilicate" } ], "name": "Note" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Colorless-gray-yellow, yellow-green or white" } ], "name": "Color" }, { "scalars": [ { "value": "Globular, reniform-stalactitic" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic-Pyramidal (mm2)" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Fine lamellar" } ], "name": "Twinning" }, { "scalars": [ { "value": "Distinct on [001]" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "6-6.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-pearly" } ], "name": "Luster" }, { "scalars": [ { "value": "2.8-2.95" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.611-1.632" } ], "name": "Refractive index (n$\\alpha$)" }, { "scalars": [ { "value": "1.615-1.642" } ], "name": "Refractive index (n$\\beta$)" }, { "scalars": [ { "value": "1.632-1.665" } ], "name": "Refractive index (n$\\gamma$)" }, { "scalars": [ { "value": "0.021-0.033" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Fluorescent, Short UV=blue white mild peach, Long UV=yellow." } ], "name": "fluorescence" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Rutile", "title": "Wikipedia: Rutile" } ], "names": [ "Rutile" ], "chemicalFormula": "TiO$_{2}$", "properties": [ { "scalars": [ { "value": "Oxide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "04.DB.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "4.5937" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "2.9587" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Reddish brown, red, pale yellow, pale blue, violet, rarely grass-green, black if high in Nb-Ta" } ], "name": "Color" }, { "scalars": [ { "value": "Acicular-Prismatic crystals, elongated and" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Tetragonal ditetragonal dipyramidal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Common on {011}, or {031}, as contact twins with two, six, or eight individuals, cyclic, polysynthetic" } ], "name": "Twinning" }, { "scalars": [ { "value": "{110} good, 100 moderate, parting on {092} and {011}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven-sub-conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "6.0-6.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine-submetallic" } ], "name": "Luster" }, { "scalars": [ { "value": "2.613" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "2.909" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.296" } ], "conditions": [ { "scalars": [ { "value": "589nm" } ], "name": "Note" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Weak-distinct brownish red-green-yellow" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Bright red-dark red" } ], "name": "Streak" }, { "scalars": [ { "value": "4.23 increasing with Nb-Ta content" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Fusible in alkali carbonates" } ], "name": "Fusibility" }, { "scalars": [ { "value": "Insoluble in acids" } ], "name": "Solubility" }, { "scalars": [ { "value": "Fe, Nb, Ta" } ], "name": "impurities" }, { "scalars": [ { "value": "4/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 4$_{2}$/mnm" } ], "name": "Space group" }, { "scalars": [ { "value": "Tetragonal ditetragonal dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Uraninite", "title": "Wikipedia: Uraninite" } ], "names": [ "Uraninite" ], "chemicalFormula": "Uranium dioxide or uranium(IV) oxide (UO$_{2}$)", "properties": [ { "scalars": [ { "value": "Oxide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "04.DL.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.4682" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Steel-black-velvet-black, brownish black, pale gray-pale green, in transmitted light, pale green, pale yellow-deep brown" } ], "name": "Color" }, { "scalars": [ { "value": "Massive, botryoidal, granular. Octahedral crystals uncommon." } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Isometric" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Indistinct" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal-uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Submetallic, greasy, dull" } ], "name": "Luster" }, { "scalars": [ { "value": "Brownish black, gray, olive-green" } ], "name": "Streak" }, { "scalars": [ { "value": "10.63-10.95" }, { "value": "decreases on oxidation" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Radioactivity: 70 Bq/g-150 kBq/g" } ], "name": "Other" }, { "scalars": [ { "value": "hexoctahedral" } ], "name": "Symmetry" }, { "scalars": [ { "value": "4/m$\\bar{3}$2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "F m3m" } ], "name": "Space group" }, { "scalars": [ { "value": "Isometric" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Hornblende", "title": "Wikipedia: Hornblende" } ], "names": [ "Hornblende" ], "chemicalFormula": "Ca$_{2}$(Mg, Fe, Al)$_{5}$ (Al, Si)$_{8}$O$_{22}$(OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Silicate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "Black/dark green" } ], "name": "Color" }, { "scalars": [ { "value": "Hexagonal/granular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Imperfect at 56 and 124 degrees" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-dull" } ], "name": "Luster" }, { "scalars": [ { "value": "Strong" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Pale gray, gray-white" } ], "name": "Streak" }, { "scalars": [ { "value": "2.9" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Ruby", "title": "Wikipedia: Ruby" } ], "names": [ "Ruby" ], "chemicalFormula": "aluminium oxide with chromium, Al$_{2}$O$_{3}$:Cr", "properties": [ { "scalars": [ { "value": "Mineral variety" } ], "name": "Category" }, { "scalars": [ { "value": "Near colorless through pink through all shades of red-a deep crimson" } ], "name": "Color" }, { "scalars": [ { "value": "Terminated tabular hexagonal prisms." } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "No true cleavage" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal, splintery" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "9.0" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Subadamantine, vitreous, pearly" } ], "conditions": [ { "scalars": [ { "value": "on partings" } ], "name": "Note" } ], "name": "Luster" }, { "scalars": [ { "value": "white" } ], "name": "Streak" }, { "scalars": [ { "value": "3.97-4.05" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.768-1.772" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.760-1.763" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": ".008" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Strong: purplish-red-orangy-red" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "red under longwave" } ], "name": "fluorescence" }, { "scalars": [ { "value": "$\\bar{3}$ 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "$\\bar{3}$c" } ], "name": "Space group" }, { "scalars": [ { "value": "(Hexagonal scalenohedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Chalcedony", "title": "Wikipedia: Chalcedony" } ], "names": [ "Chalcedony" ], "chemicalFormula": "Silica (silicon dioxide, SiO$_{2}$)", "properties": [ { "scalars": [ { "value": "Oxide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "60" } ], "units": "g / mol", "name": "Molecular weight" }, { "scalars": [ { "value": "Various" } ], "name": "Color" }, { "scalars": [ { "value": "Trigonal, Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Absent" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven, splintery, conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "6-7" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Waxy, vitreous, dull, greasy, silky" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.59-2.61" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Carnelian", "title": "Wikipedia: Carnelian" } ], "names": [ "Carnelian" ], "chemicalFormula": "Silica (silicon dioxide, SiO$_{2}$)", "properties": [ { "scalars": [ { "value": "Chalcedony variety" } ], "name": "Category" }, { "scalars": [ { "value": "60" } ], "units": "g / mol", "name": "Molecular weight" }, { "scalars": [ { "value": "Brownish-red" } ], "name": "Color" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Absent" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven, splintery, conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "6-7" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, dull, greasy, silky" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.59-2.61" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Lazurite", "title": "Wikipedia: Lazurite" } ], "names": [ "Lazurite" ], "chemicalFormula": "Lazurite, Ladjuar Medam (Lajur Madan, Lapis-lazuli Mine), Sar-e-Sang District, Koksha Valley (Kokscha, Kokcha), Badakhshan (Badakshan, Badahsan) Province, Afghanistanformula = (Na,Ca)$_{8}$[(S,Cl,SO$_{4}$,OH)$_{2}$(Al$_{6}$Si$_{6}$O$_{24}$)]", "properties": [ { "scalars": [ { "value": "Lazurite, Ladjuar Medam , Sar-e-Sang District, Koksha Valley , Badakhshan Province, Afghanistanformula=(Na,Ca)$_{8}$[(S,Cl,SO$_{4}$,OH)$_{2}$(Al$_{6}$Si$_{6}$O$_{24}$)]" } ], "conditions": [ { "scalars": [ { "value": "Lajur Madan, Lapis-lazuli Mine" }, { "value": "Kokscha, Kokcha" }, { "value": "Badakshan, Badahsan" } ], "name": "Note" } ], "name": "caption" }, { "scalars": [ { "value": "Tec-silicate" } ], "name": "Category" }, { "scalars": [ { "value": "9.FB.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "9.09" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "1" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Deep blue, azure, violet-blue, greenish blue" } ], "name": "Color" }, { "scalars": [ { "value": "Crystals occur as dodecahedra, or rarely cubes, granular, disseminated, or massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Isometric" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Imperfect on {110}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5-5.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.502-1.522" } ], "name": "Refractive index" }, { "scalars": [ { "value": "2.38-2.45" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "3.5" } ], "name": "Fusibility" }, { "scalars": [ { "value": "Soluble in HCl" } ], "name": "Solubility" }, { "scalars": [ { "value": "Cubic hexoctahedral $\\bar{4}$3m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Lapis_lazuli", "title": "Wikipedia: Lapis lazuli" } ], "names": [ "Lapis lazuli" ], "chemicalFormula": "mixture of minerals with lazurite as the main constituent.", "properties": [ { "scalars": [ { "value": "Rock" } ], "name": "Category" }, { "scalars": [ { "value": "Blue, mottled with white calcite and brassy pyrite" } ], "name": "Color" }, { "scalars": [ { "value": "Compact, massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "None, as lapis is a rock. Lazurite the main constituent, frequently occurs as dodecahedra" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Uneven-Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "5-5.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "dull" } ], "name": "Luster" }, { "scalars": [ { "value": "1.5" } ], "name": "Refractive index" }, { "scalars": [ { "value": "light blue" } ], "name": "Streak" }, { "scalars": [ { "value": "2.7-2.9" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "The variations in composition cause a wide variation in the above values." } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Olivine", "title": "Wikipedia: Olivine" } ], "names": [ "Olivine" ], "chemicalFormula": "(Mg, Fe)$_{2}$SiO$_{4}$", "properties": [ { "scalars": [ { "value": "Nesosilicate, Olivine group, Olivine series" } ], "name": "Category" }, { "scalars": [ { "value": "Yellow-yellow-green" } ], "name": "Color" }, { "scalars": [ { "value": "Massive-granular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Poor" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal-brittle" } ], "name": "Fracture" }, { "scalars": [ { "value": "6.5-7" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.630-1.650" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.650-1.670" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.670-1.690" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.040" } ], "name": "Birefringence" }, { "scalars": [ { "value": "None" } ], "name": "Streak" }, { "scalars": [ { "value": "3.2-4.5" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Peridot", "title": "Wikipedia: Peridot" } ], "names": [ "Peridot" ], "chemicalFormula": "(Mg, Fe)$_{2}$SiO$_{4}$", "properties": [ { "scalars": [ { "value": "Silicate mineral variety" } ], "name": "Category" }, { "scalars": [ { "value": "Yellow,-yellow-green, olive-green,-brownish, sometimes a lime-green,-emerald-ish hue" } ], "name": "Color" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Poor" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "6.5-7" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "conditions": [ { "scalars": [ { "value": "glassy" } ], "name": "Note" } ], "name": "Luster" }, { "scalars": [ { "value": "1.64-1.70" } ], "name": "Refractive index" }, { "scalars": [ { "value": "+0.036" } ], "name": "Birefringence" }, { "scalars": [ { "value": "None" } ], "name": "Streak" }, { "scalars": [ { "value": "3.2-4.3" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Orthoclase", "title": "Wikipedia: Orthoclase" } ], "names": [ "Orthoclase" ], "chemicalFormula": "KAlSi$_{3}$O$_{8}$", "properties": [ { "scalars": [ { "value": "Silicate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "Colorless, Greenish, Greyish yellow, White, Pink" } ], "name": "Color" }, { "scalars": [ { "value": "Can be anhedral or euhedral. Grains are commonly elongate with a tabular appearance." } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic (2/m), space group C2/m" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Typically displays carlsbad twinning. Baveno and manebach twins have also been reported in orthoclase." } ], "name": "Twinning" }, { "scalars": [ { "value": "Has perfect cleavage on {001} and good cleavage on {010}. Cleavages intersect at 90$^{\\circ}$. It can be difficult-see cleavage in thin section due-orthoclase's low relief." } ], "name": "Cleavage" }, { "scalars": [ { "value": "6" } ], "conditions": [ { "scalars": [ { "value": "defining mineral" } ], "name": "Note" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, pearly on cleavage surfaces" } ], "name": "Luster" }, { "scalars": [ { "value": "1.518-1.520" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.522-1.524" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.522-1.525" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.0050-0.0060" } ], "name": "Birefringence" }, { "scalars": [ { "value": "parallel-cleavage" } ], "name": "extinction" }, { "scalars": [ { "value": "white" } ], "name": "Streak" }, { "scalars": [ { "value": "2.55-2.63" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Low negative relief" } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Anorthoclase", "title": "Wikipedia: Anorthoclase" } ], "names": [ "Anorthoclase" ], "chemicalFormula": "(Na,K)AlSi$_{3}$O$_{8}$", "properties": [ { "scalars": [ { "value": "Feldspar" } ], "name": "Category" }, { "scalars": [ { "value": "09.FA.30" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "8.28" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "12.97" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "7.15" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "91.05" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\alpha$)" }, { "scalars": [ { "value": "116.26" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "90.15" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\gamma$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless, also white, pale creamy yellow, red, green" } ], "name": "Color" }, { "scalars": [ { "value": "Short prismatic crystals, tabular, rhombic, flattened along [010]" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Triclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Polysynthetic twinning produces a grid pattern on [100]" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on [001], other partings" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-pearly on cleavage planes" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.57-2.60" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.519-1.529" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.524-1.534" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.527-1.536" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.008" } ], "name": "Birefringence" }, { "scalars": [ { "value": "$\\bar{1}$" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "C$\\bar{1}$" } ], "name": "Space group" }, { "scalars": [ { "value": "Triclinic pinacoidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Plagioclase", "title": "Wikipedia: Plagioclase" } ], "names": [ "Plagioclase" ], "chemicalFormula": "NaAlSi$_{3}$O$_{8}$ - CaAl$_{2}$Si$_{2}$O$_{8}$", "properties": [ { "scalars": [ { "value": "Feldspar mineral group, tec-silicate" } ], "name": "Category" }, { "scalars": [ { "value": "White, gray, bluish white, reddish white, greenish white" } ], "name": "Color" }, { "scalars": [ { "value": "Massive-granular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Triclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Common, albite law striations on {001}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Good on {001} and {010}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "6-6.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "Albite:" } ], "name": "Refractive index" }, { "scalars": [ { "value": "n$_{\\alpha}$" } ], "name": "Refractive index" }, { "scalars": [ { "value": "1.527" } ], "name": "Refractive index" }, { "scalars": [ { "value": "n$_{\\beta}$" } ], "name": "Refractive index" }, { "scalars": [ { "value": "1.532" } ], "name": "Refractive index" }, { "scalars": [ { "value": "n$_{\\gamma}$" } ], "name": "Refractive index" }, { "scalars": [ { "value": "1.538" } ], "name": "Refractive index" }, { "scalars": [ { "value": "Anorthite:" } ], "name": "Refractive index" }, { "scalars": [ { "value": "n$_{\\alpha}$" } ], "name": "Refractive index" }, { "scalars": [ { "value": "1.577" } ], "name": "Refractive index" }, { "scalars": [ { "value": "n$_{\\beta}$" } ], "name": "Refractive index" }, { "scalars": [ { "value": "1.585" } ], "name": "Refractive index" }, { "scalars": [ { "value": "n$_{\\gamma}$" } ], "name": "Refractive index" }, { "scalars": [ { "value": "1.590" } ], "name": "Refractive index" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.62 -2.76" } ], "conditions": [ { "scalars": [ { "value": "albite" }, { "value": "anorthite" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Albite insoluble in HCl, anorthite decomposed by HCl" } ], "name": "Solubility" }, { "scalars": [ { "value": "$\\bar{1}$" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "C$\\bar{1}$" } ], "name": "Space group" }, { "scalars": [ { "value": "Triclinic pinacoidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Pyrite", "title": "Wikipedia: Pyrite" } ], "names": [ "Pyrite" ], "chemicalFormula": "FeS$_{2}$", "properties": [ { "scalars": [ { "value": "Sulfide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.EB.05a" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "2.12.1.1" } ], "name": "Dana classification" }, { "scalars": [ { "value": "5.417" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "119.98" } ], "units": "g/mol", "name": "Molecular weight" }, { "scalars": [ { "value": "Pale brass-yellow reflective, tarnishes darker and iridescent" } ], "name": "Color" }, { "scalars": [ { "value": "Cubic, faces may be striated, but also frequently octahedral and pyri-hedron. Often inter-grown, massive, radiated, granular, globular, and stalactitic." } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Isometric" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Penetration and contact twinning" } ], "name": "Twinning" }, { "scalars": [ { "value": "Indistinct on {001}, partings on {011} and {111}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Very uneven, sometimes conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "6-6.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic, glistening" } ], "name": "Luster" }, { "scalars": [ { "value": "Greenish-black-brownish-black" } ], "name": "Streak" }, { "scalars": [ { "value": "4.95-5.10" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "4.8-5" } ], "conditions": [ { "scalars": [ { "value": "g/cm$^{3}$" } ], "name": "Note" } ], "name": "Density" }, { "scalars": [ { "value": "2.5-3-a magnetic globule" } ], "name": "Fusibility" }, { "scalars": [ { "value": "Insoluble in water" } ], "name": "Solubility" }, { "scalars": [ { "value": "paramagnetic" } ], "name": "Other" }, { "scalars": [ { "value": "Pa$\\bar{3}$" } ], "name": "Space group" }, { "scalars": [ { "value": "2/m$\\bar{3}$" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "Isometric diploidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Chrysoberyl", "title": "Wikipedia: Chrysoberyl" } ], "names": [ "Chrysoberyl" ], "chemicalFormula": "BeAl$_{2}$O$_{4}$", "properties": [ { "scalars": [ { "value": "Oxide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "04.BA.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.481" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "9.415" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "4.428" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Various shades of green, yellow, brownish-greenish black, may be raspberry-red under incandescent light when chromian, colorless, pale shades of yellow, green, or red in transmitted light" } ], "name": "Color" }, { "scalars": [ { "value": "Crystals tabular or short prismatic, prominently striated" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Contact and penetration twins common, often repeated forming rosette structures" } ], "name": "Twinning" }, { "scalars": [ { "value": "Distinct on {110}, imperfect on {010}, poor on {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal-uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "8.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.745" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.748" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.754" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "X=red, Y=yellow-orange, Z=emerald-green" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.5-3.84" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Orthorhombic 2/m2/m2/m dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Zircon", "title": "Wikipedia: Zircon" } ], "names": [ "Zircon" ], "chemicalFormula": "zirconium silicate ZrSiO$_{4}$", "properties": [ { "scalars": [ { "value": "Nesosilicates" } ], "name": "Category" }, { "scalars": [ { "value": "09.AD.30" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "6.607(1)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.982(1)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Reddish brown, yellow, green, blue, gray, colorless, in thin section, colorless-pale brown" } ], "name": "Color" }, { "scalars": [ { "value": "tabular-prismatic crystals, irregular grains, massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Tetragonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "On {101}" } ], "name": "Twinning" }, { "scalars": [ { "value": "indistinct, on {110} and {111}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal-uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "7.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-adamantine, greasy when metamict." } ], "name": "Luster" }, { "scalars": [ { "value": "1.925-1.961" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.980-2.015" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "1.75" } ], "name": "Refractive index" }, { "scalars": [ { "value": "when" } ], "name": "Refractive index" }, { "scalars": [ { "value": "metamict" } ], "name": "Refractive index" }, { "scalars": [ { "value": "0.047-0.055" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Weak" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "4.6-4.7" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "close-2,550 $^{\\circ}$C depend on Hf,Th,U,H,etc... concentrations." } ], "name": "Fusibility" }, { "scalars": [ { "value": "Insoluble" } ], "name": "Solubility" }, { "scalars": [ { "value": "Fluorescent and radioactive, may form pleochroic halos" } ], "name": "Other" }, { "scalars": [ { "value": "4/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "I 4$_{1}$/amd" } ], "name": "Space group" }, { "scalars": [ { "value": "Tetragonal ditetragonal dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Cinnabar", "title": "Wikipedia: Cinnabar" } ], "names": [ "Cinnabar" ], "chemicalFormula": "mercury(II) sulfide, HgS", "properties": [ { "scalars": [ { "value": "Sulfide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.CD.15a" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "4.145(2)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "9.496(2)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "3" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Cochineal-red,-wards brownish red and lead-gray" } ], "name": "Color" }, { "scalars": [ { "value": "Rhombohedral-tabular, granular-massive and as incrustations" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Simple contact twins, twin plane {0001}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Prismatic {10$\\bar{1}$0}, perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven-subconchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Slightly sectile" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2-2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine-dull" } ], "name": "Luster" }, { "scalars": [ { "value": "2.905" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "3.256" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.351" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Scarlet" } ], "name": "Streak" }, { "scalars": [ { "value": "8.176" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.04 x 10$^{-25}$ g per 100 ml water {{Cite news" } ], "conditions": [ { "scalars": [ { "value": "Ksp at 25$^{\\circ}$C=2 x 10$^{-32}$" } ], "name": "Note" } ], "name": "Solubility" }, { "scalars": [ { "value": "3 2" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P3$_{1}$ 2 1" } ], "name": "Space group" }, { "scalars": [ { "value": "Trigonal Trapezohedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Opal", "title": "Wikipedia: Opal" } ], "names": [ "Opal" ], "chemicalFormula": "Hydrated silica. SiO$_{2}$.''n''H$_{2}$O", "properties": [ { "scalars": [ { "value": "Mineraloid" } ], "name": "Category" }, { "scalars": [ { "value": "Colorless, white, yellow, red, orange, green, brown, black, blue" } ], "name": "Color" }, { "scalars": [ { "value": "Irregular veins, in masses, in nodules" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Amorphous" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal-uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "5.5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Subvitreous-waxy" } ], "name": "Luster" }, { "scalars": [ { "value": "Vitreous-resinous" } ], "name": "Polish" }, { "scalars": [ { "value": "1.450" } ], "name": "Refractive index" }, { "scalars": [ { "value": "Mexican" } ], "name": "Refractive index" }, { "scalars": [ { "value": "opal" } ], "name": "Refractive index" }, { "scalars": [ { "value": "may" } ], "name": "Refractive index" }, { "scalars": [ { "value": "read" } ], "name": "Refractive index" }, { "scalars": [ { "value": "as" } ], "name": "Refractive index" }, { "scalars": [ { "value": "low" } ], "name": "Refractive index" }, { "scalars": [ { "value": "as" } ], "name": "Refractive index" }, { "scalars": [ { "value": "1.37" } ], "name": "Refractive index" }, { "scalars": [ { "value": "but" } ], "name": "Refractive index" }, { "scalars": [ { "value": "typically" } ], "name": "Refractive index" }, { "scalars": [ { "value": "reads" } ], "name": "Refractive index" }, { "scalars": [ { "value": "1.42-1.43" } ], "name": "Refractive index" }, { "scalars": [ { "value": "none" } ], "name": "Birefringence" }, { "scalars": [ { "value": "None" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "black or white body color: inert-white-moderate light blue, green, or yellow in long and short wave, may also phosphoresce, common opal: inert-strong green or yellowish green in long and short wave, may phosphoresce, fire opal: inert-moderate greenish brown in long and short wave, may phosphoresce" } ], "name": "fluorescence" }, { "scalars": [ { "value": "green s-nes: 660nm, 470nm cu-ff" } ], "name": "absorption" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.15" } ], "conditions": [ { "scalars": [ { "value": "+.08,-.90" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.09" } ], "name": "Density" }, { "scalars": [ { "value": "hot salt water, bases, methanol, humic acid, hydrofluoric acid" } ], "name": "Solubility" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Turquoise", "title": "Wikipedia: Turquoise" } ], "names": [ "Turquoise" ], "chemicalFormula": "CuAl$_{6}$(PO$_{4}$)$_{4}$(OH)$_{8}$.4H$_{2}$O", "properties": [ { "scalars": [ { "value": "Phosphate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.DD.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Massive, nodular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Triclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Good-perfect_usually N/A" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "5-7" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "1.610" } ], "name": "Refractive index (n$\\alpha$)" }, { "scalars": [ { "value": "1.615" } ], "name": "Refractive index (n$\\beta$)" }, { "scalars": [ { "value": "1.650" } ], "name": "Refractive index (n$\\gamma$)" }, { "scalars": [ { "value": "+0.040" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Weak" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Bluish white" } ], "name": "Streak" }, { "scalars": [ { "value": "2.6-2.9" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Fusible in heated HCl" } ], "name": "Fusibility" }, { "scalars": [ { "value": "Soluble in HCl" } ], "name": "Solubility" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Baryte", "title": "Wikipedia: Baryte" } ], "names": [ "Baryte" ], "chemicalFormula": "BaSO$_{4}$", "properties": [ { "scalars": [ { "value": "Sulfate mineral, barite group" } ], "name": "Category" }, { "scalars": [ { "value": "07.AD.35" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "28.03.01.01" } ], "name": "Dana classification" }, { "scalars": [ { "value": "8.884(2)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.457(3)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "7.157(2)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (A)" }, { "scalars": [ { "value": "Colorless, white, light shades of blue, yellow, grey, brown" } ], "name": "Color" }, { "scalars": [ { "value": "Tabular parallel-base, fibrous, nodular-massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect cleavage parallel-base and prism faces: {001} Perfect, {210} Perfect, {010} Imperfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Irregular/uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3-3.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, pearly" } ], "name": "Luster" }, { "scalars": [ { "value": "1.634-1.637" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.636-1.638" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.646-1.648" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": ".012" } ], "name": "Birefringence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "4.3-5" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "4.48" } ], "conditions": [ { "scalars": [ { "value": "g/cm$^{3}$" } ], "name": "Note" } ], "name": "Density" }, { "scalars": [ { "value": "4, yellowish green ''barium flame''" } ], "name": "Fusibility" }, { "scalars": [ { "value": "low" } ], "name": "Solubility" }, { "scalars": [ { "value": "Orthorhombic (2/m 2/m 2/m) dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Celestine_(mineral)", "title": "Wikipedia: Celestine (mineral)" } ], "names": [ "Celestine (mineral)" ], "chemicalFormula": "SrSO$_{4}$ sometimes contains minor calcium and/or barium", "properties": [ { "scalars": [ { "value": "Sulfate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "07.AD.35" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "8.359" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.352" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.866" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless, white, pale blue, pink, pale green, pale brown, black" } ], "name": "Color" }, { "scalars": [ { "value": "Tabular-pyramidal crystals, also fibrous, lamellar, earthy, massive granular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {001}, good on {210}, poor on {010}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3-3.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, pearly on cleavages" } ], "name": "Luster" }, { "scalars": [ { "value": "1.619-1.622" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.622-1.624" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.630-1.632" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.011" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Weak" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Short UV=yellow, white blue, long UV=yellow, white blue" } ], "name": "fluorescence" }, { "scalars": [ { "value": "white" } ], "name": "Streak" }, { "scalars": [ { "value": "3.95-3.97" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Orthorhombic 2/m 2/m 2/m dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Strontianite", "title": "Wikipedia: Strontianite" } ], "names": [ "Strontianite" ], "chemicalFormula": "SrCO$_{3}$", "properties": [ { "scalars": [ { "value": "Carbonate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "05.AB.15 or 5/B.04-20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "14.01.03.03" } ], "name": "Dana classification" }, { "scalars": [ { "value": "5.1" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8.4" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.0" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "147.63" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "Colourless, white, gray, light yellow, green or brown, colourless in transmitted light" } ], "name": "Color" }, { "scalars": [ { "value": "Prismatic, acicular, pseudo hexagonal, columnar-fibrous, granular, massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Very common, usually contact, rarely penetration, also repeated" } ], "name": "Twinning" }, { "scalars": [ { "value": "{110} nearly perfect, {021} poor, {010} traces" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Subconchoidal-uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, resinous on breaks, greasy" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.74-3.78 Transparent versions are heavier than the other ones" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.52" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.66" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.67" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.15" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Almost always fluorescent" } ], "name": "fluorescence" }, { "scalars": [ { "value": "Soluble in dilute HCl" } ], "name": "Solubility" }, { "scalars": [ { "value": "2/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "Pmcn" } ], "name": "Space group" }, { "scalars": [ { "value": "Orthorhombic-Dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Limonite", "title": "Wikipedia: Limonite" } ], "names": [ "Limonite" ], "chemicalFormula": "FeO(OH).nH$_{2}$O", "properties": [ { "scalars": [ { "value": "Amorphous, mineraloid" } ], "name": "Category" }, { "scalars": [ { "value": "Unclassified" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Various shades of brown and yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Fine grained aggregate, powdery coating" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Absent" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "4-5.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Earthy" } ], "name": "Luster" }, { "scalars": [ { "value": "Yellowish brown" } ], "name": "Streak" }, { "scalars": [ { "value": "2.9-4.3" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.7-4.3" } ], "conditions": [ { "scalars": [ { "value": "g/cm$^{3}$" } ], "name": "Note" } ], "name": "Density" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Goethite", "title": "Wikipedia: Goethite" } ], "names": [ "Goethite" ], "chemicalFormula": "$\\alpha$-FeO(H$_2$O)", "properties": [ { "scalars": [ { "value": "oxide minerals, hydroxide subgroup" } ], "name": "Category" }, { "scalars": [ { "value": "04.FD.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Yellowish-reddish-dark brown or black" } ], "name": "Color" }, { "scalars": [ { "value": "radial acicular, mammilary, botroydoal, stalactitic, massive, as encrustation, as pseudomorph, may be banded or iridescent" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic 2/m2/m2/m" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect {010}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven-splintery" } ], "name": "Fracture" }, { "scalars": [ { "value": "5-5.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine-dull" } ], "name": "Luster" }, { "scalars": [ { "value": "Opaque-sub-translucent" } ], "name": "Refractive index" }, { "scalars": [ { "value": "Brown, brownish yellow-orange yellow" } ], "name": "Streak" }, { "scalars": [ { "value": "3.3-4.3" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Fusible at 5-5.5" } ], "name": "Fusibility" }, { "scalars": [ { "value": "HCl soluble" } ], "name": "Solubility" }, { "scalars": [ { "value": "weakly magnetic" } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Dolomite", "title": "Wikipedia: Dolomite" } ], "names": [ "Dolomite" ], "chemicalFormula": "CaMg(CO$_{3}$)$_{2}$", "properties": [ { "scalars": [ { "value": "Carbonate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "4.8012(1)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "16.002" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "3" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "05.AB.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "White, gray-pink" } ], "name": "Color" }, { "scalars": [ { "value": "Tabular crystals, often with curved faces, also columnar, stalactitic, granular, massive." } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Common as simple contact twins" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {10$\\bar{1}$1}, rhombohedral cleavage" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3.5-4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-pearly" } ], "name": "Luster" }, { "scalars": [ { "value": "1.679-1.681" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.500" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.179-0.181" } ], "name": "Birefringence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.84-2.86" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Poorly soluble in dilute HCl" } ], "name": "Solubility" }, { "scalars": [ { "value": "May fluoresce white-pink under UV, triboluminescent." } ], "name": "Other" }, { "scalars": [ { "value": "$\\bar{3}$" } ], "name": "Symmetry" }, { "scalars": [ { "value": "Trigonal rhombohedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Apatite", "title": "Wikipedia: Apatite" } ], "names": [ "Apatite" ], "chemicalFormula": "Ca$_{5}$(PO$_{4}$)$_{3}$(F,Cl,OH)", "properties": [ { "scalars": [ { "value": "Phosphate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "08.BN.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Transparent-translucent, usually green, less often colorless, yellow, blue-violet, pink, brown." } ], "name": "Color" }, { "scalars": [ { "value": "Tabular, prismatic crystals, massive, compact or granular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Hexagonal dipyramidal (6/m)" } ], "name": "Crystal system" }, { "scalars": [ { "value": "[0001] indistinct, [1010] indistinct" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal-uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "5" } ], "conditions": [ { "scalars": [ { "value": "defining mineral" } ], "name": "Note" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-subresinous" } ], "name": "Luster" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Polish" }, { "scalars": [ { "value": "1.634-1.638" } ], "name": "Refractive index" }, { "scalars": [ { "value": "0.002-0.008" } ], "name": "Birefringence" }, { "scalars": [ { "value": "''Blue s-nes''-strong, blue and yellow-colorless. Other colors are weak-very weak." } ], "name": "Pleochroism" }, { "scalars": [ { "value": "''Yellow s-nes''-purplish-pink, which is stronger in long wave, ''blue s-nes''-blue-light-blue in both long and short wave, ''green s-nes''-greenish-yellow, which is stronger in long wave, ''violet s-nes''-greenish-yellow in long wave, light-purple in short wave." } ], "name": "fluorescence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.16-3.22" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Pyrochlore", "title": "Wikipedia: Pyrochlore" } ], "names": [ "Pyrochlore" ], "chemicalFormula": "(Na,Ca)$_{2}$Nb$_{2}$O$_{6}$(OH,F)", "properties": [ { "scalars": [ { "value": "Oxide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "04.DH.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "08.02.01.01 Pyrochlore group" } ], "name": "Dana classification" }, { "scalars": [ { "value": "10.41(6)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Black-brown, chocolate-brown, reddish brown, amber-orange, red-orange" } ], "name": "Color" }, { "scalars": [ { "value": "Typically octahedra, disseminated granular, massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Isometric-Hexoctahedral" } ], "name": "Crystal system" }, { "scalars": [ { "value": "111 rare" } ], "name": "Twinning" }, { "scalars": [ { "value": "111 indistinct, may be a parting." } ], "name": "Cleavage" }, { "scalars": [ { "value": "Subconchoidal-uneven, splintery" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5.0-5.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-resinous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.9-2.2" } ], "name": "Refractive index (n)" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "4.45-4.90" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Variably radioactive, often metamict" } ], "name": "Other" }, { "scalars": [ { "value": "Isometric 4/m $\\bar{3}$ 2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Ulexite", "title": "Wikipedia: Ulexite" } ], "names": [ "Ulexite" ], "chemicalFormula": "NaCaB$_{5}$O$_{6}$(OH)$_{6}$.5(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Nesoborates" } ], "name": "Category" }, { "scalars": [ { "value": "06.EA.25" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "26.05.11.01" } ], "name": "Dana classification" }, { "scalars": [ { "value": "8.816(3)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "12.87" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.678(1)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "90.25" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\alpha$)" }, { "scalars": [ { "value": "109.12" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "105.1" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\gamma$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless-white" } ], "name": "Color" }, { "scalars": [ { "value": "Acicular-fibrous" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Triclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Polysynthetic on {010} and {100}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {010} good on {1$\\bar{1}$0} poor on {110}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, silky or satiny in fibrous aggregates" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "1.95-1.96" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.491-1.496" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.504-1.506" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.519-1.520" } ], "name": "Refractive index (br/>n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.028" } ], "name": "Birefringence" }, { "scalars": [ { "value": "May fluoresce yellow, greenish yellow, cream, white under SW and LW UV" } ], "name": "fluorescence" }, { "scalars": [ { "value": "Slightly soluble in water" } ], "name": "Solubility" }, { "scalars": [ { "value": "Parallel fibrous masses can act as fiber optical light pipes" } ], "name": "Other" }, { "scalars": [ { "value": "Triclinic $\\bar{1}$ pinacoidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Pentlandite", "title": "Wikipedia: Pentlandite" } ], "names": [ "Pentlandite" ], "chemicalFormula": "iron nickel sulfide:(Fe,Ni)$_{9}$S$_{8}$", "properties": [ { "scalars": [ { "value": "Sulfide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.BB.15a" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Yellowish bronze" } ], "name": "Color" }, { "scalars": [ { "value": "Hexoctahedral rare, massive-granular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Isometric" } ], "name": "Crystal system" }, { "scalars": [ { "value": "absent-octahedral parting" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "3.5-4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "opaque" } ], "name": "Refractive index" }, { "scalars": [ { "value": "light bronze-brown, greenish black" } ], "name": "Streak" }, { "scalars": [ { "value": "4.6-5.0" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.5-2" } ], "name": "Fusibility" }, { "scalars": [ { "value": "becomes magnetic on heating" } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Ilmenite", "title": "Wikipedia: Ilmenite" } ], "names": [ "Ilmenite" ], "chemicalFormula": "iron titanium oxide, FeTiO3", "properties": [ { "scalars": [ { "value": "Oxide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "04.CB.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "04.03.05.01" } ], "name": "Dana classification" }, { "scalars": [ { "value": "5.08854(7)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "14.0924(3) : Z=6" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "Iron-black, gray with a brownish tint in reflected light" } ], "name": "Color" }, { "scalars": [ { "value": "Granular-massive and lamellar exsolutions in hematite or magnetite" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{0001} simple, {10$\\bar{1}$1} lamellar" } ], "name": "Twinning" }, { "scalars": [ { "value": "absent, parting on {0001} and {10$\\bar{1}$1}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal-subconchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic-submetallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Strong, O=pinkish brown, E=dark brown" } ], "conditions": [ { "scalars": [ { "value": "bireflectance" } ], "name": "Note" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Black" } ], "name": "Streak" }, { "scalars": [ { "value": "4.70-4.79" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "weakly magnetic" } ], "name": "Other" }, { "scalars": [ { "value": "$\\bar{3}$" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "R$\\bar{3}$" } ], "name": "Space group" }, { "scalars": [ { "value": "Trigonal rhombohedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Baddeleyite", "title": "Wikipedia: Baddeleyite" } ], "names": [ "Baddeleyite" ], "chemicalFormula": "ZrO$_{2}$", "properties": [ { "scalars": [ { "value": "Oxide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "04.DE.35" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "04.04.14.01" } ], "name": "Dana classification" }, { "scalars": [ { "value": "5.1505" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.2116" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.3173" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "99.23" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless-yellow, green, greenish or reddish brown, brown, iron-black" } ], "name": "Color" }, { "scalars": [ { "value": "Tabular prismatic, radially fibrous in botryoidal masses" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Ubiqui-us polysynthetic on {100} and {110}" } ], "name": "Twinning" }, { "scalars": [ { "value": "{001} distinct" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Irregular uneven-subconchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "6.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Greasy-vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "5.5-6" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.130" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "2.190" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "2.200" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.070" } ], "name": "Birefringence" }, { "scalars": [ { "value": "X=yellow, reddish brown, oil-green, Y=oil-green, reddish brown, Z=brown, light brown" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Blue-green cathodoluminescence" } ], "name": "Other" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M Symbol" }, { "scalars": [ { "value": "P2$_{1}$/c" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Arsenopyrite", "title": "Wikipedia: Arsenopyrite" } ], "names": [ "Arsenopyrite" ], "chemicalFormula": "FeAsS", "properties": [ { "scalars": [ { "value": "Sulfide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.EB.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.744" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.675" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.785" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "112.3" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Steel grey-silver white" } ], "name": "Color" }, { "scalars": [ { "value": "Acicular, off-square prismatic, stubby, striated, also compact, granular, columnar" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Common on {100} and {001}, contact/penetration twinning on {101}" } ], "name": "Twinning" }, { "scalars": [ { "value": "110" } ], "conditions": [ { "scalars": [ { "value": "distinct" } ], "name": "Note" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Subconchoidal-rough" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5.5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Weak, white or bluish tint, faint reddish yellow" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Black" } ], "name": "Streak" }, { "scalars": [ { "value": "5.9-6.2" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Yes" } ], "name": "Fusibility" }, { "scalars": [ { "value": "Nitric acid" } ], "name": "Solubility" }, { "scalars": [ { "value": "Garlic odour when struck, greenish tinge when weathered, green staining of wall rocks" } ], "name": "Other" }, { "scalars": [ { "value": "Monoclinic 2/m prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Chalcopyrite", "title": "Wikipedia: Chalcopyrite" } ], "names": [ "Chalcopyrite" ], "chemicalFormula": "CuFeS$_{2}$", "properties": [ { "scalars": [ { "value": "Sulfide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.CB.10a" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.289" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "10.423" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Brass yellow, may have iridescent purplish tarnish." } ], "name": "Color" }, { "scalars": [ { "value": "Predominantly the disphenoid and resembles a tetrahedron, commonly massive, and sometimes botryoidal." } ], "name": "Crystal habit" }, { "scalars": [ { "value": "TetragonalScalenohedral $\\bar{4}$2m" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Penetration twins" } ], "name": "Twinning" }, { "scalars": [ { "value": "Indistinct on {011}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Irregular-uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Greenish black" } ], "name": "Streak" }, { "scalars": [ { "value": "4.1-4.3" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Soluble in HNO$_{3}$" } ], "name": "Solubility" }, { "scalars": [ { "value": "magnetic on heating" } ], "name": "Other" }, { "scalars": [ { "value": "Tetragonal $\\bar{4}$2m-scalenohedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Labradorite", "title": "Wikipedia: Labradorite" } ], "names": [ "Labradorite" ], "chemicalFormula": "(Ca,Na)(Al,Si)$_{4}$O$_{8}$, where Ca/(Ca + Na) (% anorthite) is between 50%-70%", "properties": [ { "scalars": [ { "value": "Feldspar, tec-silicate" } ], "name": "Category" }, { "scalars": [ { "value": "8.155" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "12.84" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "10.16" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "93.5" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\alpha$)" }, { "scalars": [ { "value": "116.25" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "89.133" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\gamma$)" }, { "scalars": [ { "value": "6" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Gray, brown, greenish, blue, yellow, colorless" } ], "name": "Color" }, { "scalars": [ { "value": "Crystals typically thin and tabular, rhombic in cross section, striated, massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Triclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Common by Albite, Pericline, Carlsbad, Baveno, or Manebach twin laws" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {001}, less perfect on {010}, intersecting at near 90$^{\\circ}$, distinct on {110}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven-conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "6-6.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-pearly on cleavages" } ], "name": "Luster" }, { "scalars": [ { "value": "1.554-1.563" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.559-1.568" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.562-1.573" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.008-0.010" } ], "name": "Birefringence" }, { "scalars": [ { "value": "white" } ], "name": "Streak" }, { "scalars": [ { "value": "2.68-2.72" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Labradorescence" } ], "conditions": [ { "scalars": [ { "value": "iridescent" } ], "name": "Note" } ], "name": "Other" }, { "scalars": [ { "value": "Triclinic pinacoidal $\\bar{1}$" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Bytownite", "title": "Wikipedia: Bytownite" } ], "names": [ "Bytownite" ], "chemicalFormula": "(Ca,Na)[Al(Al,Si)Si$_{2}$O$_{8}$]", "properties": [ { "scalars": [ { "value": "Plagioclase feldspar" } ], "name": "Category" }, { "scalars": [ { "value": "09.FA.35" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "76.01.03.05" } ], "name": "Dana classification" }, { "scalars": [ { "value": "8.178" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "12.870" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "14.187" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "93:5 $\\beta$=115:9 $\\gamma$=90:63" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\alpha$)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless, white, gray" } ], "name": "Color" }, { "scalars": [ { "value": "Rarely as crystals flattened on [010], commonly as cleavable masses or anhedral grains in massive aggregates" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Triclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Common Albite, Carlsbad, and Pericline twinning" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on [001], good on [010], imperfect on [110]" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven-conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "6-6.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, pearly on cleavages" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.72-2.74" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.563-1.572" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.568-1.578" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.573-1.583" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.010-0.011" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Triclinic pinacoidal $\\bar{1}$" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Sphalerite", "title": "Wikipedia: Sphalerite" } ], "names": [ "Sphalerite" ], "chemicalFormula": "(Zn,Fe)S", "properties": [ { "scalars": [ { "value": "Sulfide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.08.02.01" } ], "name": "Dana classification" }, { "scalars": [ { "value": "02.CB.05a" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Brown, yellow, red, green, black." } ], "name": "Color" }, { "scalars": [ { "value": "Euhedral crystals-occurs as well-formed crystals showing good external form. Granular-generally occurs as anhedral-subhedral crystals in matrix." } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Isometric hextetrahedral ($\\bar{4}$ 3m)" } ], "name": "Crystal system" }, { "scalars": [ { "value": "perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Simple contact twins or complex lamellar forms, twin axis [111]" } ], "name": "Twinning" }, { "scalars": [ { "value": "Uneven-conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "3.5-4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine, resinous, greasy" } ], "name": "Luster" }, { "scalars": [ { "value": "2.369" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "brownish white, pale yellow" } ], "name": "Streak" }, { "scalars": [ { "value": "3.9-4.2" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "non-radioactive, non-magnetic, fluorescent and triboluminescent." } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Thortveitite", "title": "Wikipedia: Thortveitite" } ], "names": [ "Thortveitite" ], "chemicalFormula": "(Sc,Y)$_{2}$Si$_{2}$O$_{7}$", "properties": [ { "scalars": [ { "value": "orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "gray" } ], "name": "Streak" }, { "scalars": [ { "value": "3.3-3.8" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Gadolinite", "title": "Wikipedia: Gadolinite" } ], "names": [ "Gadolinite" ], "chemicalFormula": "(Ce,La,Nd,Y)$_{2}$FeBe$_{2}$Si$_{2}$O$_{10}$", "properties": [ { "scalars": [ { "value": "Nesosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.AJ.20" } ], "name": "Strunz classification" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Actinolite", "title": "Wikipedia: Actinolite" } ], "names": [ "Actinolite" ], "chemicalFormula": "$\\Box$$Ca$_{2}$(Mg$_{4.5-2.5}$Fe$^{2+}$_{0.5-2.5}$)Si$_{8}$O$_{22}$(OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Inosilicates" } ], "name": "Category" }, { "scalars": [ { "value": "09.DE.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "pale-dark green, yellowish green and black. White or grey when in asbes-s" } ], "name": "Color" }, { "scalars": [ { "value": "bladed, fibrous, radial" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "monoclinic-prismatic, H-M symbol (2/m), space group C2/m" } ], "name": "Crystal system" }, { "scalars": [ { "value": "simple or lamellar" } ], "name": "Twinning" }, { "scalars": [ { "value": "perfect along {110}." } ], "name": "Cleavage" }, { "scalars": [ { "value": "uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "vitreous-dull" } ], "name": "Luster" }, { "scalars": [ { "value": "vitreous" } ], "name": "Polish" }, { "scalars": [ { "value": "1.613-1.628" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.627-1.644" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.638-1.655" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.0250-0.0270" } ], "name": "Birefringence" }, { "scalars": [ { "value": "moderate, yellow-dark green" } ], "conditions": [ { "scalars": [ { "value": "in s-nes that are transparent" } ], "name": "Note" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "inert" } ], "name": "fluorescence" }, { "scalars": [ { "value": "faint line at 503 nm" } ], "name": "absorption" }, { "scalars": [ { "value": "white" } ], "name": "Streak" }, { "scalars": [ { "value": "3.00" } ], "conditions": [ { "scalars": [ { "value": "+0.10,-0.05" } ], "name": "Note" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Andalusite", "title": "Wikipedia: Andalusite" } ], "names": [ "Andalusite" ], "chemicalFormula": "Al$_{2}$SiO$_{5}$", "properties": [ { "scalars": [ { "value": "Nesosilicates" } ], "name": "Category" }, { "scalars": [ { "value": "7.7980 b=7.9031 c=5.5566" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "09.AF.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Pink, violet, yellow, green, white, gray, in thin section, colorless-pink or green" } ], "name": "Color" }, { "scalars": [ { "value": "As euhedral crystals or columnar aggregates having nearly square cross sections, fibrous compact-massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "On {101}, rare" } ], "name": "Twinning" }, { "scalars": [ { "value": "Good on {110}, poor on {100}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "uneven-subconchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "6.5-7.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.629-1.640" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.633-1.644" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.638-1.650" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.009-0.010" } ], "name": "Birefringence" }, { "scalars": [ { "value": "strongly trichroic" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "non-fluorescent" } ], "name": "fluorescence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.17" } ], "conditions": [ { "scalars": [ { "value": "+/-.04" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2/m 2/m 2/m-Dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Axinite", "title": "Wikipedia: Axinite" } ], "names": [ "Axinite" ], "chemicalFormula": "(Ca,Fe,Mn)$_{3}$Al$_{2}$BO$_{3}$Si$_{4}$O$_{12}$OH or Ca$_{2}$(Fe,Mn)Al$_{2}$BSi$_{4}$O$_{15}$(OH)", "properties": [ { "scalars": [ { "value": "Sorosilicates" } ], "name": "Category" }, { "scalars": [ { "value": "09.BD.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Reddish brown-yellow-colorless. Blue, violet, grey." } ], "name": "Color" }, { "scalars": [ { "value": "Tabular, wedge shaped crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Triclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Good on {100}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "6.0-7.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.672-1.693" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.677-1.701" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.681-1.704" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.011" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Strong" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.18-3.37" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Brookite", "title": "Wikipedia: Brookite" } ], "names": [ "Brookite" ], "chemicalFormula": "TiO$_{2}$", "properties": [ { "scalars": [ { "value": "Oxide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "04.DD.10, 4/D.15-10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "4.4.5.1" } ], "name": "Dana classification" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "5.4558" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "9.1819" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.1429" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "79.88" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "Deep red, reddish brown, yellowish brown, brown, or black" } ], "name": "Color" }, { "scalars": [ { "value": "Tabular and striated, pyramidal or pseudohexagonal" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "On {120}, uncertain" } ], "name": "Twinning" }, { "scalars": [ { "value": "Poor on {120}, in traces on {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Subconchoidal-irregular" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5.5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Submetallic" } ], "name": "Luster" }, { "scalars": [ { "value": "White, greyish or yellowish" } ], "name": "Streak" }, { "scalars": [ { "value": "4.08-4.18" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.583" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "2.584" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "2.700" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.117" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Very weak, yellowish, reddish, orange-brown" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Non-fluorescent" } ], "name": "fluorescence" }, { "scalars": [ { "value": "Orthorhombic 2/m 2/m 2/m dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Lepidolite", "title": "Wikipedia: Lepidolite" } ], "names": [ "Lepidolite" ], "chemicalFormula": "K(Li,Al)$_{3}$(Al,Si,Rb)$_{4}$O$_{10}$(F,OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Silicate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "09.EC.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.209(2) b=9.011(5)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "10.149(5)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "100:77(4)" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Pink, purple, rose-red, violet-gray, yellowish, white, colorless" } ], "name": "Color" }, { "scalars": [ { "value": "Tabular-prismatic pseudohexagonal crystals, scaly aggregates and massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Rare, composition plane {001}" } ], "name": "Twinning" }, { "scalars": [ { "value": "{001} perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "2.5-3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-pearly" } ], "name": "Luster" }, { "scalars": [ { "value": "1.525-1.548" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.551-1.58" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.554-1.586" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.0290-0.0380" } ], "name": "Birefringence" }, { "scalars": [ { "value": "X=almost colorless, Y=Z=pink, pale violet" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.8-2.9" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2/m" } ], "name": "Monoclinic H-M symbol" }, { "scalars": [ { "value": "C 2/m" } ], "name": "Space group" }, { "scalars": [ { "value": "Cm" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Spodumene", "title": "Wikipedia: Spodumene" } ], "names": [ "Spodumene" ], "chemicalFormula": "lithium aluminium silicate, LiAl(SiO$_{3}$)$_{2}$", "properties": [ { "scalars": [ { "value": "Silicate mineral, pyroxene" } ], "name": "Category" }, { "scalars": [ { "value": "9.46" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8.39" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.22" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "110.17" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Highly variable: white, colorless, gray, pink, lilac, violet, yellow and green, may be bicolored, emerald green-hiddenite, lilac-kunzite" } ], "name": "Color" }, { "scalars": [ { "value": "prismatic, generally flattened and elongated, striated parallel-{100}, commonly massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic, 2/m" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Common on {100}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect prismatic, two directions {110} \\xe2\\x88\\xa7 {1$\\bar{1}$0} at 87$^{\\circ}$" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven-subconchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "6.5-7" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, pearly on cleavage" } ], "name": "Luster" }, { "scalars": [ { "value": "1.648-1.661" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.655-1.670" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.662-1.679" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.014-0.018" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Strong in kunzite: $\\alpha$-purple, $\\gamma$-colorless, hiddenite: $\\alpha$-green, $\\gamma$-colorless" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "white" } ], "name": "Streak" }, { "scalars": [ { "value": "3.03-3.23" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "3.5" } ], "name": "Fusibility" }, { "scalars": [ { "value": "insoluble" } ], "name": "Solubility" }, { "scalars": [ { "value": "Tenebrescence cha-yancy kunzite often fluorescentunder UV{Citation neededdate=August 2010" } ], "name": "Other" }, { "scalars": [ { "value": "Monoclinic 2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Petalite", "title": "Wikipedia: Petalite" } ], "names": [ "Petalite" ], "chemicalFormula": "LiAlSi$_{4}$O$_{10}$", "properties": [ { "scalars": [ { "value": "Phyllosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.EF.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "11.737" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.171" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "7.63" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "112.54" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless, grey, yellow, pink,-white" } ], "name": "Color" }, { "scalars": [ { "value": "Tabular prismatic crystals and columnar masses" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Common on {001}, lamellar" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {001}, poor on {201} with 38.5$^{\\circ}$ angle between the two" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Subconchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "6-6.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, pearly on cleavages" } ], "name": "Luster" }, { "scalars": [ { "value": "1.504" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.510" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.516" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.012" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Colorless" } ], "name": "Streak" }, { "scalars": [ { "value": "2.4" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1350" } ], "units": "$^{\\circ}$C", "name": "Melting point" }, { "scalars": [ { "value": "5" } ], "name": "Fusibility" }, { "scalars": [ { "value": "Insoluble" } ], "name": "Solubility" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 2/a" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Sillimanite", "title": "Wikipedia: Sillimanite" } ], "names": [ "Sillimanite" ], "chemicalFormula": "Al$_{2}$SiO$_{5}$", "properties": [ { "scalars": [ { "value": "Nesosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.AF.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "52.02.02a.01" } ], "name": "Dana classification" }, { "scalars": [ { "value": "7.47" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "7.66" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.75" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless or white-gray, also brown, yellow, yellow-green, gray-green, blue-green, blue, colorless in thin section" } ], "name": "Color" }, { "scalars": [ { "value": "Prismatic crystals, fibrous, acicular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic-Dipyramidal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{010} perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Splintery" } ], "name": "Fracture" }, { "scalars": [ { "value": "Tough" } ], "name": "Tenacity" }, { "scalars": [ { "value": "7" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-subadamantine, silky" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.24" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.653-1.661" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.654-1.670" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.669-1.684" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.020-0.022" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Colorless-pale brown-yellow" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Orthorhombic (2/m 2/m 2/m)" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Anorthite", "title": "Wikipedia: Anorthite" } ], "names": [ "Anorthite" ], "chemicalFormula": "CaAl$_{2}$Si$_{2}$O$_{8}$", "properties": [ { "scalars": [ { "value": "Feldspar mineral" } ], "name": "Category" }, { "scalars": [ { "value": "09.FA.35" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "8.1768" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "12.8768" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "14.169" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "93.17" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\alpha$)" }, { "scalars": [ { "value": "115.85" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "92.22" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\gamma$)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "White, grayish, reddish" } ], "name": "Color" }, { "scalars": [ { "value": "Anhedral-subhedral granular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Triclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Common" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect [001] good [010] poor [110]" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven-concoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.573-1.577" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.580-1.585" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.585-1.590" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.012-0.013" } ], "name": "Birefringence" }, { "scalars": [ { "value": "2.72-2.75" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Triclinic $\\bar{1}$ pinacoidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Gibbsite", "title": "Wikipedia: Gibbsite" } ], "names": [ "Gibbsite" ], "chemicalFormula": "Al(OH)$_{3}$", "properties": [ { "scalars": [ { "value": "Hydroxide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "04.FE.10" } ], "name": "Strunz classification" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Hemimorphite", "title": "Wikipedia: Hemimorphite" } ], "names": [ "Hemimorphite" ], "chemicalFormula": "Zn$_{4}$Si$_{2}$O$_{7}$(OH)$_{2}$.H$_{2}$O", "properties": [ { "scalars": [ { "value": "Sorosilicates" } ], "name": "Category" }, { "scalars": [ { "value": "09.BD.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "8.367(5)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "10.73" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.155(3)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "White, blue, greenish" } ], "name": "Color" }, { "scalars": [ { "value": "Polar crystals, with different or hemimorphic ends. Also ''coxcomb'' masses, mammillary, stalactitic, or massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic pyramidal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Rare on {001}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {110}, poor on {101}, {001} rare" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven-conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "4.5-5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, adamantine, rarely silky" } ], "name": "Luster" }, { "scalars": [ { "value": "1.614" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.617" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.636" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.022" } ], "name": "Birefringence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.516-3.525" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Soluble in acid" } ], "name": "Solubility" }, { "scalars": [ { "value": "Orthorhombic mm2" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Sekaninaite", "title": "Wikipedia: Sekaninaite" } ], "names": [ "Sekaninaite" ], "chemicalFormula": "(Fe$^{+2}$,Mg)$_{2}$Al$_{4}$Si$_{5}$O$_{18}$", "properties": [ { "scalars": [ { "value": "Cyclosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.CJ.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "61.02.01.02 Cordierite group" } ], "name": "Dana classification" }, { "scalars": [ { "value": "17.18" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "9.82" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "9.29" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Blue-blue-violet" } ], "name": "Color" }, { "scalars": [ { "value": "As poorly developed crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Commonly twinned on {110} and {310}" } ], "name": "Twinning" }, { "scalars": [ { "value": "{100}, imperfect, parting on {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "7-7.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "2.76-2.77" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.561" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.572" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.576" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.015" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Orthorhombic-Dipyramidal 2/m 2/m 2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Vermiculite", "title": "Wikipedia: Vermiculite" } ], "names": [ "Vermiculite" ], "chemicalFormula": "(Mg,Fe$^{+2}$,Fe$^{+3}$)$_{3}$[(Al,Si)$_{4}$O$_{10}$](OH)$_{2}$.4H$_{2}$O", "properties": [ { "scalars": [ { "value": "Phyllosilicates" } ], "name": "Category" }, { "scalars": [ { "value": "9.EC.50" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.24" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "9.17" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "28.6" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "94.6" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "Colorless, white, yellow, green, brown, black" } ], "name": "Color" }, { "scalars": [ { "value": "As large crystalline plates-clay-sized particles, lamellar-scaley" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Pliable" } ], "name": "Tenacity" }, { "scalars": [ { "value": "1.5-2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Greasy or vitreous" } ], "conditions": [ { "scalars": [ { "value": "pearly at cleavage planes" } ], "name": "Note" } ], "name": "Luster" }, { "scalars": [ { "value": "white or yellowish, shiny, light brown" } ], "name": "Streak" }, { "scalars": [ { "value": "2.4-2.7" } ], "conditions": [ { "scalars": [ { "value": "0.065-0.130 when exfoliated" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.525-1.561" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.545-1.581" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.545-1.581" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.020" } ], "name": "Birefringence" }, { "scalars": [ { "value": "X in paler shades than Y and Z" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "C 2/m" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Kogarkoite", "title": "Wikipedia: Kogarkoite" } ], "names": [ "Kogarkoite" ], "chemicalFormula": "Na$_{3}$(SO$_{4}$)F", "properties": [ { "scalars": [ { "value": "Sulfate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "07.BD.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "18.07" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "6.94" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "11.44" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "107.72" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "12" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless, pale sky-blue, pale pink, lilac" } ], "name": "Color" }, { "scalars": [ { "value": "Tabular crystals, granular, earthy aggregates" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Common" } ], "name": "Twinning" }, { "scalars": [ { "value": "3.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-dull" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.66" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.439" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.439" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.442" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.003" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Cream-pale blue under SW UV and green under LW UV" } ], "name": "fluorescence" }, { "scalars": [ { "value": "Slowly soluble in water" } ], "name": "Solubility" }, { "scalars": [ { "value": "P2$_{1}$/m" } ], "name": "pseudorhombohedral Space group" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Hibonite", "title": "Wikipedia: Hibonite" } ], "names": [ "Hibonite" ], "chemicalFormula": "(Ca,Ce)(Al,Ti,Mg)$_{12}$O$_{19}$", "properties": [ { "scalars": [ { "value": "Oxide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "04.CC.45" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.56" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "21.89" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Brownish black-black, reddish brown in thin fragments, blue in meteorite occurrence" } ], "name": "Color" }, { "scalars": [ { "value": "Prismatic platy-steep pyramidal crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Hexagonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{0001} good, {10$\\bar{1}$0} parting" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Subconchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "7.5-8" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "reddish brown" } ], "name": "Streak" }, { "scalars": [ { "value": "3.84" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.807(2)" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.79(1)" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "O=brownish gray, E=gray" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "6/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 6$_{3}$/mmc" } ], "name": "Space group" }, { "scalars": [ { "value": "Hexagonal dihexagonal dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Vanadinite", "title": "Wikipedia: Vanadinite" } ], "names": [ "Vanadinite" ], "chemicalFormula": "Pb$_{5}$(VO$_{4}$)$_{3}$Cl", "properties": [ { "scalars": [ { "value": "Vanadate mineral, Apatite group" } ], "name": "Category" }, { "scalars": [ { "value": "10.3174" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "7.3378" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "1416.27" } ], "units": "g/mol", "name": "Molecular weight" }, { "scalars": [ { "value": "08.BN.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Prismatic or nodular, may be acicular, hairlike, fibrous, rarely rounded, globular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Hexagonal dipyramidal 6/m" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven-conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3-4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Resinus-sub-adamantine" } ], "name": "Luster" }, { "scalars": [ { "value": "2.416" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "2.350" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.066" } ], "name": "Birefringence" }, { "scalars": [ { "value": "None" } ], "name": "fluorescence" }, { "scalars": [ { "value": "brownish yellow" } ], "name": "Streak" }, { "scalars": [ { "value": "6.8-7.1 6.95" } ], "conditions": [ { "scalars": [ { "value": "measured" }, { "value": "calculated" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Hexagonal 6/m-dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Alforsite", "title": "Wikipedia: Alforsite" } ], "names": [ "Alforsite" ], "chemicalFormula": "Ba$_{5}$(PO$_{4}$)$_{3}$Cl", "properties": [ { "scalars": [ { "value": "Phosphate minerals-Apatite group" } ], "name": "Category" }, { "scalars": [ { "value": "08.BN.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "10.25" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "7.64" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless" } ], "name": "Color" }, { "scalars": [ { "value": "Subhedral, fine grained masses" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Hexagonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "4.73-4.80" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.700" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.700" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.000" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Intense violet cathodoluminescence" } ], "name": "Other" }, { "scalars": [ { "value": "6/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 6$_{3}$/m" } ], "name": "Space group" }, { "scalars": [ { "value": "Hexagonal dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Tiger's_eye", "title": "Wikipedia: Tiger's eye" } ], "names": [ "Tiger's eye" ], "chemicalFormula": "Silica (silicon dioxide, SiO$_{2}$)", "properties": [ { "scalars": [ { "value": "golden-red-brown" } ], "name": "Color" }, { "scalars": [ { "value": "5.5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Silky" } ], "name": "Luster" }, { "scalars": [ { "value": "2.64-2.71" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Magnetite", "title": "Wikipedia: Magnetite" } ], "names": [ "Magnetite" ], "chemicalFormula": "iron(II,III) oxide, Fe$^{2+}$Fe$^{3+}$$_{2}$O$_{4}$", "properties": [ { "scalars": [ { "value": "Oxide minerals, Spinel group, Spinel structural group" } ], "name": "Category" }, { "scalars": [ { "value": "04.BB.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "8.397" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Black, gray with brownish tint in reflected sun" } ], "name": "Color" }, { "scalars": [ { "value": "Octahedral, fine granular-massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Isometric Hexoctahedral" } ], "name": "Crystal system" }, { "scalars": [ { "value": "On {Ill} as both twin and composition plane, the spinel law, as contact twins" } ], "name": "Twinning" }, { "scalars": [ { "value": "Indistinct, parting on {Ill}, very good" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5.5-6.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Black" } ], "name": "Streak" }, { "scalars": [ { "value": "5.17-5.18" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Dissolves slowly in hydrochloric acid" } ], "name": "Solubility" }, { "scalars": [ { "value": "Isometric 4/m $\\bar{3}$ 2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Sal_ammoniac", "title": "Wikipedia: Sal ammoniac" } ], "names": [ "Sal ammoniac" ], "chemicalFormula": "NH$_{4}$Cl", "properties": [ { "scalars": [ { "value": "Halide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "3.AA.25" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "3.859" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "1" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "53.49" } ], "units": "g/mol", "name": "Molecular weight" }, { "scalars": [ { "value": "Colorless, white, pale gray, may be pale yellow-brown if impure" } ], "name": "Color" }, { "scalars": [ { "value": "Crystals skeletal or dendritic, massive, encrustations" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Isometric" } ], "name": "Crystal system" }, { "scalars": [ { "value": "On {111}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Imperfect on {111}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Sectile" } ], "name": "Tenacity" }, { "scalars": [ { "value": "1-2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.639" } ], "name": "Refractive index (n)" }, { "scalars": [ { "value": "Weak after deformation" } ], "name": "Birefringence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "1.535" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "in water" } ], "name": "Solubility" }, { "scalars": [ { "value": "Isometric 4/m $\\bar{3}$ 2/m-Gyroidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Wolframite", "title": "Wikipedia: Wolframite" } ], "names": [ "Wolframite" ], "chemicalFormula": "(Fe,Mn)WO$_{4}$", "properties": [ { "scalars": [ { "value": "Tungstate" } ], "name": "Category" }, { "scalars": [ { "value": "4.77" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.73" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "4.98" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Grayish-brownish black" } ], "name": "Color" }, { "scalars": [ { "value": "Tabular-short prismatic crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect 010" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven-rough" } ], "name": "Fracture" }, { "scalars": [ { "value": "4-4.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Submetallictoresinous" } ], "name": "Luster" }, { "scalars": [ { "value": "None" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Reddish brown" } ], "name": "Streak" }, { "scalars": [ { "value": "7-7.5" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "3-4-magnetic globule" } ], "name": "Fusibility" }, { "scalars": [ { "value": "insoluble" } ], "name": "Solubility" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 2/c" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Brucite", "title": "Wikipedia: Brucite" } ], "names": [ "Brucite" ], "chemicalFormula": "Mg(OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Oxide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "04.FE.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "3.142(1)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "4.766(2)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "1" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "White, pale green, blue, gray, honey-yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Tabular crystals, platy or foliated masses and rosettes-fibrous-massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {0001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Irregular" } ], "name": "Fracture" }, { "scalars": [ { "value": "Sectile" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2.5-3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-pearly" } ], "name": "Luster" }, { "scalars": [ { "value": "1.56-1.59" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.58-1.60" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.02" } ], "name": "Birefringence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.39-2.40" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Pyroelectric" } ], "name": "Other" }, { "scalars": [ { "value": "hexagonal scalenohedral" } ], "name": "Symmetry" }, { "scalars": [ { "value": "$\\bar{3}$2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P$\\bar{3}$m1" } ], "name": "Space group" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Onyx", "title": "Wikipedia: Onyx" } ], "names": [ "Onyx" ], "chemicalFormula": "Silica (silicon dioxide, SiO$_{2}$)", "properties": [ { "scalars": [ { "value": "Oxide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "60" } ], "units": "g / mol", "name": "Molecular weight" }, { "scalars": [ { "value": "Various" } ], "name": "Color" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Absent" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven, conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "6.5-7" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, silky" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.55-2.70" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.530-1.543" } ], "name": "Refractive index" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Tanzanite", "title": "Wikipedia: Tanzanite" } ], "names": [ "Tanzanite" ], "chemicalFormula": "(Ca$_{2}$Al$_{3}$(SiO$_{4}$)(Si$_{2}$O$_{7}$)O(OH)) + (Cr,Sr)", "properties": [ { "scalars": [ { "value": "Sorosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.BG.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Violet, blue" } ], "name": "Color" }, { "scalars": [ { "value": "Prismatic crystals with striations, massive-columnar" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "penetration twins" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect {010}, imperfect {100}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven-conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "6.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, pearly on cleavage surfaces" } ], "name": "Luster" }, { "scalars": [ { "value": "1.69-1.70" } ], "name": "Refractive index" }, { "scalars": [ { "value": "0.006-0.018" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Present, dichroism or trichroism depending on heat treatment." } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White or colorless" } ], "name": "Streak" }, { "scalars": [ { "value": "3.10-3.38" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Moissanite", "title": "Wikipedia: Moissanite" } ], "names": [ "Moissanite" ], "chemicalFormula": "SiC", "properties": [ { "scalars": [ { "value": "Mineral species" } ], "name": "Category" }, { "scalars": [ { "value": "01.DA.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Transparent, green, yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Generally found as inclusions in other minerals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Most common: 6H hexagonal (6mm), space group: P6$_{3}$mc" } ], "name": "Crystal system" }, { "scalars": [ { "value": "indistinct" } ], "conditions": [ { "scalars": [ { "value": "0001" } ], "name": "Note" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal-fractures developed in brittle materials characterized by smoothly curving surfaces, ''e.g.'', quartz" } ], "name": "Fracture" }, { "scalars": [ { "value": "9.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine-metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "2.654" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "2.967" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "Birefringence" } ], "name": "Refractive index" }, { "scalars": [ { "value": "0.313" } ], "name": "Refractive index" }, { "scalars": [ { "value": "green or yellow" } ], "name": "fluorescence" }, { "scalars": [ { "value": "greenish gray" } ], "name": "Streak" }, { "scalars": [ { "value": "3.218-3.22" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2730" } ], "units": "$^{\\circ}$C", "conditions": [ { "scalars": [ { "value": "decomposes" } ], "name": "Note" } ], "name": "Melting point" }, { "scalars": [ { "value": "none" } ], "name": "Solubility" }, { "scalars": [ { "value": "Not radioactive, non-magnetic" } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Halite", "title": "Wikipedia: Halite" } ], "names": [ "Halite" ], "chemicalFormula": "NaCl", "properties": [ { "scalars": [ { "value": "Halide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "03.AA.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.6404(1)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "58.433" } ], "units": "g/mol", "name": "Molecular weight" }, { "scalars": [ { "value": "Colorless or white, also blue, purple, red, pink, yellow, orange, or gray" } ], "name": "Color" }, { "scalars": [ { "value": "Predominantly cubes and in massive sedimentary beds, but also granular, fibrous and compact" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Cubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect {001}, three directions cubic" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2.0-2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.544" } ], "name": "Refractive index (n)" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.17" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Water soluble" } ], "name": "Solubility" }, { "scalars": [ { "value": "Salty flavor, Fluorescent" } ], "name": "Other" }, { "scalars": [ { "value": "Isometric hexoctahedral 4/m $\\bar{3}$ 2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Malachite", "title": "Wikipedia: Malachite" } ], "names": [ "Malachite" ], "chemicalFormula": "Cu$_{2}$CO$_{3}$(OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Carbonate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "221.1" } ], "units": "g/mol", "name": "Molecular weight" }, { "scalars": [ { "value": "05.BA.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Bright green, dark green, blackish green, commonly banded in masses, green-yellowish green in transmitted light" } ], "name": "Color" }, { "scalars": [ { "value": "Massive, botryoidal, stalactitic, crystals are acicular-tabular prismatic" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic-prismatic H-M Symbol (2/m) Space group P2$_{1}$/a" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Common as contact or penetration twins on {100} and {201}. Polysynthetic twinning also present." } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {$\\bar{2}$01} fair on {010}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Subconchoidal-uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "3.5-4.0" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine-vitreous, silky if fibrous, dull-earthy if massive" } ], "name": "Luster" }, { "scalars": [ { "value": "1.655" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.875" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.909" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.254" } ], "name": "Birefringence" }, { "scalars": [ { "value": "light green" } ], "name": "Streak" }, { "scalars": [ { "value": "3.6-4" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Augite", "title": "Wikipedia: Augite" } ], "names": [ "Augite" ], "chemicalFormula": "(Ca,Na)(Mg,Fe,Al,Ti)(Si,Al)$_{2}$O$_{6}$", "properties": [ { "scalars": [ { "value": "Inosilicates" } ], "name": "Category" }, { "scalars": [ { "value": "09.DA.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "9.699" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8.844" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.272" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "106.97" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Black, brown, greenish, violet-brown, in thin section, colorless-gray with zoning common" } ], "name": "Color" }, { "scalars": [ { "value": "Commonly as stubby prismatic crystals, also acicular, skeletal, dendritic" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Simple or multiple on {100} and {001}" } ], "name": "Twinning" }, { "scalars": [ { "value": "{110} good with 87$^{\\circ}$ between {110} and {1$\\bar{1}$0}, parting on {100} and {010}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "uneven-conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5.5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, resinous-dull" } ], "name": "Luster" }, { "scalars": [ { "value": "1.680-1.735" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.684-1.741" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.706-1.774" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.026-0.039" } ], "name": "Birefringence" }, { "scalars": [ { "value": "X=pale green, pale brown, green, greenish yellow, Y=pale brown, pale yellow-green, violet, Z=pale green, grayish green, violet" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Greenish-white" } ], "name": "Streak" }, { "scalars": [ { "value": "3.19-3.56" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "C 2/c" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Carnotite", "title": "Wikipedia: Carnotite" } ], "names": [ "Carnotite" ], "chemicalFormula": "(Ca,Na)(Mg,Fe,Al,Ti)(Si,Al)$_{2}$O$_{6}$", "properties": [ { "scalars": [ { "value": "Vanadate mineral" } ], "name": "Category" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/W\u00fcstite", "title": "Wikipedia: W\u00fcstite" } ], "names": [ "W\u00fcstite" ], "chemicalFormula": "FeO", "properties": [ { "scalars": [ { "value": "Oxide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "04.AB.25" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Greyish white-yellow or brown, colourless in thin section" } ], "name": "Color" }, { "scalars": [ { "value": "Pyramidic, prismatic" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Cubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{001} perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Subconchoidal-rough" } ], "name": "Fracture" }, { "scalars": [ { "value": "5-5.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "1.735-2.32" } ], "name": "Refractive index" }, { "scalars": [ { "value": "in" } ], "name": "Refractive index" }, { "scalars": [ { "value": "synthetic" } ], "name": "Refractive index" }, { "scalars": [ { "value": "crystals" } ], "name": "Refractive index" }, { "scalars": [ { "value": "None" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "5.88" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "5.7" } ], "conditions": [ { "scalars": [ { "value": "g/cm$^{3}$" } ], "name": "Note" } ], "name": "Density" }, { "scalars": [ { "value": "Soluble in dilute HCl" } ], "name": "Solubility" }, { "scalars": [ { "value": "Forms solid solution with periclase" } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Armalcolite", "title": "Wikipedia: Armalcolite" } ], "names": [ "Armalcolite" ], "chemicalFormula": "(Mg,Fe$^{2+}$)Ti$_{2}$O$_{5}$", "properties": [ { "scalars": [ { "value": "Titanium mineral" } ], "name": "Category" }, { "scalars": [ { "value": "04.CB.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Gray-tan in reflection, opaque" } ], "name": "Color" }, { "scalars": [ { "value": "Orthorhombic, point group 2/m 2/m 2/m, space group Bbmm, ''a''=0.9743(30) nm, ''b''=1.0023(20) nm, ''c''=0.3738(30) nm, Z=2" } ], "name": "Crystal system" }, { "scalars": [ { "value": "<5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "4.64 g/cm$^{3}$" } ], "conditions": [ { "scalars": [ { "value": "measured" } ], "name": "Note" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Rhodochrosite", "title": "Wikipedia: Rhodochrosite" } ], "names": [ "Rhodochrosite" ], "chemicalFormula": "MnCO$_{3}$", "properties": [ { "scalars": [ { "value": "Carbonate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "05.AB.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "4.777" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "15.67" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "6" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "114.95" } ], "units": "g/mol", "name": "Molecular weight" }, { "scalars": [ { "value": "Pink, rose-red, cherry-red, yellow, yellowish gray, cinnamon-brown, may be banded" } ], "name": "Color" }, { "scalars": [ { "value": "Rhombohedral and scalenohedral crystals, also commonly bladed, columnar, stalactitic, botryoidal, granular or massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "On {10$\\bar{1}$2} as contact and lamellar" } ], "name": "Twinning" }, { "scalars": [ { "value": "On {10$\\bar{1}$1} perfect, parting on {10$\\bar{1}$2}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven, conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3.5-4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-pearly" } ], "name": "Luster" }, { "scalars": [ { "value": "1.814-1.816" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.596-1.598" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.218" } ], "name": "Birefringence" }, { "scalars": [ { "value": "weak" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "None" } ], "name": "fluorescence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.7" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "$\\bar{3}$2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "R$\\bar{3}$c" } ], "name": "Space group" }, { "scalars": [ { "value": "Trigonal hexagonal scalenohedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Bornite", "title": "Wikipedia: Bornite" } ], "names": [ "Bornite" ], "chemicalFormula": "Cu$_{5}$FeS$_{4}$", "properties": [ { "scalars": [ { "value": "Sulfide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.BA.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "10.95" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "21.862" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "10.95" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "16" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "501.88" } ], "units": "g/mol", "name": "Molecular weight" }, { "scalars": [ { "value": "Copper red, bronze brown, purple" } ], "name": "Color" }, { "scalars": [ { "value": "Granular, massive, disseminated-Crystals pseudocubic, dodecahedral, octahedral" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic-Dipyramidal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Penetration twins on [111]" } ], "name": "Twinning" }, { "scalars": [ { "value": "Poor on [111]." } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven-subconchoidal, brittle" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3-3.25" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic if fresh, iridescent tarnish" } ], "name": "Luster" }, { "scalars": [ { "value": "Opaque" } ], "name": "Refractive index" }, { "scalars": [ { "value": "Weak but noticeable" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "grayish black" } ], "name": "Streak" }, { "scalars": [ { "value": "5.06-5.08" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Magnetic after heating, iridescent" } ], "name": "Other" }, { "scalars": [ { "value": "Orthorhombic (2/m 2/m 2/m)" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Cassiterite", "title": "Wikipedia: Cassiterite" } ], "names": [ "Cassiterite" ], "chemicalFormula": "SnO$_{2}$", "properties": [ { "scalars": [ { "value": "Oxide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "04.DB.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "4.7382(4)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "3.1871(1)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Black, brownish black, reddish brown, red, yellow, gray, white, rarely colorless" } ], "name": "Color" }, { "scalars": [ { "value": "Pyramidic, prismatic, radially fibrous botryoidal crusts and concretionary masses, coarse-fine granular, massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Tetragonal-Ditetragonal Dipyramidal 4/m 2/m 2/m" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Very common on {011}, as contact and penetration twins, geniculated, lamellar" } ], "name": "Twinning" }, { "scalars": [ { "value": "{100} imperfect, {110} indistinct, partings on {111} or {011}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Subconchoidal-uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "6-7" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine-adamantine metallic, splendent, may be greasy on fractures" } ], "name": "Luster" }, { "scalars": [ { "value": "1.990-2.010" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "2.093-2.100" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.103" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Pleochroic haloes have been observed. Dichroic in yellow, green, red, brown, usually weak, or absent, but strong at times" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White-brownish" } ], "name": "Streak" }, { "scalars": [ { "value": "6.98-7.1" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "infusible" } ], "name": "Fusibility" }, { "scalars": [ { "value": "insoluble" } ], "name": "Solubility" }, { "scalars": [ { "value": "Tetragonal 4/m 2/m 2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Stibnite", "title": "Wikipedia: Stibnite" } ], "names": [ "Stibnite" ], "chemicalFormula": "Sb$_{2}$S$_{3}$", "properties": [ { "scalars": [ { "value": "Sulfide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.DB.05a" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "11.229" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "11.31" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "3.8389" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Lead-gray, tarnishing blackish or iridescent, in polished section, white" } ], "name": "Color" }, { "scalars": [ { "value": "Massive, radiating and elongated crystals. Massive and granular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Rare" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect and easy on {010}, imperfect on {100} and {110}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Subconchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Highly flexible but not elastic, slightly sectile" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Splendent on fresh crystals surfaces, otherwise metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Similar-color" } ], "name": "Streak" }, { "scalars": [ { "value": "4.63" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "decomposed with hydrochloric acid" } ], "name": "Solubility" }, { "scalars": [ { "value": "Anisotropism: Strong" } ], "name": "Other" }, { "scalars": [ { "value": "2/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "Pbnm" } ], "name": "Space group" }, { "scalars": [ { "value": "Orthorhombic dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Zoisite", "title": "Wikipedia: Zoisite" } ], "names": [ "Zoisite" ], "chemicalFormula": "Ca$_{2}$Al$_{3}$(SiO$_{4}$)(Si$_{2}$O$_{7}$)O(OH)", "properties": [ { "scalars": [ { "value": "Sorosilicate-epidote group" } ], "name": "Category" }, { "scalars": [ { "value": "09.BG.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "58.2.1b.1" } ], "name": "Dana classification" }, { "scalars": [ { "value": "White, gray, greenish brown, greenish gray, pink, blue, purple" } ], "name": "Color" }, { "scalars": [ { "value": "Prismatic crystals with striations, massive-columnar" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic-Dipyramidal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect {010} imperfect {100}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven-conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "6-7" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, pearly on cleavage surfaces" } ], "name": "Luster" }, { "scalars": [ { "value": "1.696-1.700" } ], "name": "Refractive index (n$\\alpha$)" }, { "scalars": [ { "value": "1.696-1.702" } ], "name": "Refractive index (n$\\beta$)" }, { "scalars": [ { "value": "1.702-1.718" } ], "name": "Refractive index (n$\\gamma$)" }, { "scalars": [ { "value": "0.006-0.018" } ], "name": "Birefringence" }, { "scalars": [ { "value": "X=pale pink-red-violet, Y=nearly colorless-bright pink or deep blue, Z=pale yellow-yellow-green" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White or colorless" } ], "name": "Streak" }, { "scalars": [ { "value": "3.10-3.36" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Thulite", "title": "Wikipedia: Thulite" } ], "names": [ "Thulite" ], "chemicalFormula": "(Ca,Mn)$_{2}$Al$_{3}$(SiO$_{4}$)(Si$_{2}$O$_{7}$)O(OH)", "properties": [ { "scalars": [ { "value": "Mineral Variety" } ], "name": "Category" }, { "scalars": [ { "value": "Pink" } ], "name": "Color" }, { "scalars": [ { "value": "Massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect {010} imperfect {100}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven-conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "6.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, pearly on cleavage surfaces" } ], "name": "Luster" }, { "scalars": [ { "value": "1.69-1.70" } ], "name": "Refractive index" }, { "scalars": [ { "value": "0.006-0.018" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Present, dichroism or trichroism depending on color." } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White or colorless" } ], "name": "Streak" }, { "scalars": [ { "value": "3.10-3.38" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Galena", "title": "Wikipedia: Galena" } ], "names": [ "Galena" ], "chemicalFormula": "PbS", "properties": [ { "scalars": [ { "value": "Sulfide mineral, octahedral subgroup" } ], "name": "Category" }, { "scalars": [ { "value": "02.CD.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "2.8.1.1" } ], "name": "Dana classification" }, { "scalars": [ { "value": "5.936" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Lead gray and silvery" } ], "name": "Color" }, { "scalars": [ { "value": "Cubes and octahedra, blocky, tabular and sometimes skeletal crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "isometric/Cubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Contact, penetration and lamellar" } ], "name": "Twinning" }, { "scalars": [ { "value": "Cubic perfect on [001], parting on [111]" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Subconchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2.5-2.75" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic on cleavage planes" } ], "name": "Luster" }, { "scalars": [ { "value": "Lead gray" } ], "name": "Streak" }, { "scalars": [ { "value": "7.2-7.6" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2" } ], "name": "Fusibility" }, { "scalars": [ { "value": "Natural semiconductor" } ], "name": "Other" }, { "scalars": [ { "value": "4/m$\\bar{3}$2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "Fm3m" } ], "name": "Space group" }, { "scalars": [ { "value": "Isometric hexoctahedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Chrysotile", "title": "Wikipedia: Chrysotile" } ], "names": [ "Chrysotile" ], "chemicalFormula": "Mg$_{3}$(Si$_{2}$O$_{5}$)(OH)$_{4}$", "properties": [ { "scalars": [ { "value": "Phyllosilicates, Kaolinite-serpentine group" } ], "name": "Category" }, { "scalars": [ { "value": "09.ED.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "277.11" } ], "units": "g/mol,", "conditions": [ { "scalars": [ { "value": "''ideal''" } ], "name": "Note" } ], "name": "Molecular weight" }, { "scalars": [ { "value": "acicular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "monoclinic or orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "fibrous" } ], "name": "Fracture" }, { "scalars": [ { "value": "2\\xc2\\x8f.5-3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "1.545-1.569" } ], "name": "Refractive index" }, { "scalars": [ { "value": "1.553-1.571" } ], "name": "Refractive index" }, { "scalars": [ { "value": "0.008 (max)" } ], "name": "Birefringence" }, { "scalars": [ { "value": "white" } ], "name": "Streak" }, { "scalars": [ { "value": "2.53" } ], "conditions": [ { "scalars": [ { "value": "g/ml" } ], "name": "Note" } ], "name": "Density" }, { "scalars": [ { "value": "dehydrates at 550-750 $^{\\circ}$C" } ], "name": "Fusibility" }, { "scalars": [ { "value": "insoluble in water, fibres degrade in dilute acid" } ], "name": "Solubility" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Petzite", "title": "Wikipedia: Petzite" } ], "names": [ "Petzite" ], "chemicalFormula": "Ag$_{3}$AuTe$_{2}$", "properties": [ { "scalars": [ { "value": "telluride mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.BA.40a" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Steel-gray-iron-black, commonly tarnished from bronze-yellow-sooty black, grayish white with a pale bluish tint in polished section" } ], "name": "Color" }, { "scalars": [ { "value": "Granular-massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Cubic Gyroidal H-M Symbol (4 3 2)" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Subconchoidal irregular" } ], "name": "Fracture" }, { "scalars": [ { "value": "Slightly sectile-brittle." } ], "name": "Tenacity" }, { "scalars": [ { "value": "2.5-3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Grayish black" } ], "name": "Streak" }, { "scalars": [ { "value": "8.7-9.14" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Kassite", "title": "Wikipedia: Kassite" } ], "names": [ "Kassite" ], "chemicalFormula": "CaTi$_{2}$O$_{4}$(OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Hydroxide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "04.DH.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Brown red, colorless, light yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Pseudo hexagonal" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic-Prismatic (2/m), space group: P2$_{1}$/a" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{010} Perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Fracture" }, { "scalars": [ { "value": "5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine" } ], "name": "Luster" }, { "scalars": [ { "value": "1.95" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "2.13" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "2.21" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.26" } ], "name": "Birefringence" }, { "scalars": [ { "value": "none" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.42" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Not radioactive" } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Sodalite", "title": "Wikipedia: Sodalite" } ], "names": [ "Sodalite" ], "chemicalFormula": "Na8(Al6Si6O24)Cl2", "properties": [ { "scalars": [ { "value": "Tec-silicates without zeolitic H$_{2}$O" } ], "name": "Category" }, { "scalars": [ { "value": "09.FB.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "8.876(6)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "1" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Rich royal blue, green, yellow, violet, white veining common" } ], "name": "Color" }, { "scalars": [ { "value": "Massive, rarely as dodecahedra" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Cubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Common on {111} forming pseudohexagonal prisms" } ], "name": "Twinning" }, { "scalars": [ { "value": "Poor on {110}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal-uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5.5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Dull vitreous-greasy" } ], "name": "Luster" }, { "scalars": [ { "value": "1.483-1.487" } ], "name": "Refractive index (n)" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.27-2.33" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Easily-a colourless glass, sodium yellow flame" } ], "name": "Fusibility" }, { "scalars": [ { "value": "Soluble in hydrochloric and nitric acids" } ], "name": "Solubility" }, { "scalars": [ { "value": "Bright red-orange cathodoluminescenceand fluorescence under LW and SW UV, with yellowish phosphorescence may be pho-chromic in magentas" } ], "name": "fluorescence" }, { "scalars": [ { "value": "Odor of H$_{2}$S emitted on fracture" } ], "name": "Other" }, { "scalars": [ { "value": "$\\bar{4}$3m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P$\\bar{4}$3n" } ], "name": "Space group" }, { "scalars": [ { "value": "Isometric hextetrahedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Azurite", "title": "Wikipedia: Azurite" } ], "names": [ "Azurite" ], "chemicalFormula": "Cu$_{3}$(CO$_{3}$)$_{2}$(OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Carbonate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "05.BA.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.01" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.85" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "10.35" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "92.43" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "344.67" } ], "units": "g/mol", "name": "Molecular weight" }, { "scalars": [ { "value": "Azure-blue, Berlin blue, very dark-pale blue, pale blue in transmitted light" } ], "name": "Color" }, { "scalars": [ { "value": "Massive, prismatic, stalactitic, tabular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic Prismatic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {011}, fair on {100}, poor on {110}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3.5-4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Rare, twin planes {$\\bar{1}$01}, {$\\bar{1}$02} or {001}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.730" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.758" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.838" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.108" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Visible shades of blue" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Light blue" } ], "name": "Streak" }, { "scalars": [ { "value": "3.773" }, { "value": "3.78" } ], "conditions": [ { "scalars": [ { "value": "measured" }, { "value": "calculated" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Monoclinic 2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Astrophyllite", "title": "Wikipedia: Astrophyllite" } ], "names": [ "Astrophyllite" ], "chemicalFormula": "Cu$_{3}$(CO$_{3}$)$_{2}$(OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Inosilicates, Astrophyllite group" } ], "name": "Category" }, { "scalars": [ { "value": "09.DC.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Golden brown-yellow, rarely greenish" } ], "name": "Color" }, { "scalars": [ { "value": "Tabular-bladed, radiating, stellate aggregates, lamellar masses" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Triclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on [001] imperfect on [100]" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "3-4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Greasy, pearly, sub-metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "1.680" } ], "name": "Refractive index (n$\\alpha$)" }, { "scalars": [ { "value": "1.700" } ], "name": "Refractive index (n$\\beta$)" }, { "scalars": [ { "value": "1.730" } ], "name": "Refractive index (n$\\gamma$)" }, { "scalars": [ { "value": "0.050" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Strong: X=deep red-orange Y=orange-yellow Z=lemon-yellow" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Yellowish brown or white" } ], "name": "Streak" }, { "scalars": [ { "value": "3.2-3.4" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Molybdenite", "title": "Wikipedia: Molybdenite" } ], "names": [ "Molybdenite" ], "chemicalFormula": "MoS$_{2}$", "properties": [ { "scalars": [ { "value": "Sulfide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.EA.30" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "3.16" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "12.3" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Black, lead-silvery gray" } ], "name": "Color" }, { "scalars": [ { "value": "Thin, platy hexagonal crystals terminated by pinacoidal faces, also as tapering six-sided pyramids that can be truncated by the pinacoids. Also massive, lamellar and in small grains in sulfide ore bodies" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Hexagonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on [0001]" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Lamellae flexible, not elastic" } ], "name": "Tenacity" }, { "scalars": [ { "value": "1-1.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Very strong" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Bluish gray" } ], "name": "Streak" }, { "scalars": [ { "value": "4.73" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Infusible" } ], "conditions": [ { "scalars": [ { "value": "decomposes at 1185 $^{\\circ}$C" } ], "name": "Note" } ], "name": "Fusibility" }, { "scalars": [ { "value": "It has a greasy feel and leaves marks on fingers" } ], "name": "Other" }, { "scalars": [ { "value": "6/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 6$_{3}$/mmc" } ], "name": "Space group" }, { "scalars": [ { "value": "Hexagonal dihexagonal dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Jarosite", "title": "Wikipedia: Jarosite" } ], "names": [ "Jarosite" ], "chemicalFormula": "KFe$^{3+}$$_{3}$(OH)$_{6}$(SO$_{4}$)$_{2}$", "properties": [ { "scalars": [ { "value": "Sulfate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "7.304" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "17.268" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "3" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "500.8" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "07.BC.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "30.2.5.1" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Amber yellow or dark brown" } ], "name": "Color" }, { "scalars": [ { "value": "Crystals are usually pseudocubic or tabular, also as granular crusts, nodules, fibrous masses or concretionary." } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Distinct on {0001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven-conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2.5-3.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Subadamantine-vitreous, resinous on fractures" } ], "name": "Luster" }, { "scalars": [ { "value": "1.815-1.820" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.713-1.715" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.102-0.105" } ], "name": "Birefringence" }, { "scalars": [ { "value": "E colorless, very pale yellow, or pale greenish yellow, O deep golden yellow or reddish brown" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "light yellow" } ], "name": "Streak" }, { "scalars": [ { "value": "2.9-3.3" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Insoluble in water. Soluble in HCl." } ], "name": "Solubility" }, { "scalars": [ { "value": "Strongly pyroelectric. Non-fluorescent. Barely detectable radioactivity" } ], "name": "Other" }, { "scalars": [ { "value": "Trigonal $\\bar{3}$ 2/m hexagonal scalenohedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Fluororichterite", "title": "Wikipedia: Fluororichterite" } ], "names": [ "Fluororichterite" ], "chemicalFormula": "Na(NaCa)Mg$_{5}$Si$_{8}$O$_{22}$F$_{2}$", "properties": [ { "scalars": [ { "value": "Silicate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "09.DE.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "9.763" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "17.89" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.122" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "102.25" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "Brown-brownish-red, rose-red, yellow, grey-brown, also pale-dark green" } ], "name": "Color" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.17" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "C 2/m" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Smoky_quartz", "title": "Wikipedia: Smoky quartz" } ], "names": [ "Smoky quartz" ], "chemicalFormula": "SiO$_{2}$", "properties": [ { "scalars": [ { "value": "Silicate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "04.DA.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "75.01.03.01" } ], "name": "Dana classification" }, { "scalars": [ { "value": "4.9133" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.4053" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "3" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "6-sided prism ending in 6-sided pyramid , drusy, fine-grained-microcrystalline, massive" } ], "conditions": [ { "scalars": [ { "value": "typical" } ], "name": "Note" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "$\\alpha$-quartz: trigonal trapezohedral class 3 2, $\\beta$-quartz: hexagonal 622" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Common Dauphine law, Brazil law and Japan law" } ], "name": "Twinning" }, { "scalars": [ { "value": "{0110} Indistinct" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "7-lower in impure varieties" } ], "conditions": [ { "scalars": [ { "value": "defining mineral" } ], "name": "Note" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "1.543-1.545" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.552-1.554" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "+0.009" } ], "conditions": [ { "scalars": [ { "value": "B-G interval" } ], "name": "Note" } ], "name": "Birefringence" }, { "scalars": [ { "value": "None" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.65" }, { "value": "variable 2.59-2.63 in impure varieties" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1670" } ], "units": "$^{\\circ}$C 1713 $^{\\circ}$C", "conditions": [ { "scalars": [ { "value": "$\\beta$ tridymite" }, { "value": "$\\beta$ cris-balite" } ], "name": "Note" } ], "name": "Melting point" }, { "scalars": [ { "value": "Insoluble at STP, 1 ppm$_{mass}$ at 400 $^{\\circ}$C and 500 lb/in$^{2}$-2600 ppm$_{mass}$ at 500 $^{\\circ}$C and 1500 lb/in$^{2}$" } ], "name": "Solubility" }, { "scalars": [ { "value": "Piezoelectric, may be triboluminescent, chiral" } ], "conditions": [ { "scalars": [ { "value": "hence optically active if not racemic" } ], "name": "Note" } ], "name": "Other" }, { "scalars": [ { "value": "Trigonal 32" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Clinoclase", "title": "Wikipedia: Clinoclase" } ], "names": [ "Clinoclase" ], "chemicalFormula": "Cu$_{3}$AsO$_{4}$(OH)$_{3}$", "properties": [ { "scalars": [ { "value": "Arsenate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.BE.20" } ], "name": "Strunz classification" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Staurolite", "title": "Wikipedia: Staurolite" } ], "names": [ "Staurolite" ], "chemicalFormula": "Fe$^{2+}$$_{2}$Al$_{9}$O$_{6}$(SiO$_{4}$)$_{4}$(O,OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Nesosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.AF.30" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "7.86" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "16.6" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.65" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "90.45" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Dark reddish brown-blackish brown, yellowish brown, rarely blue, pale golden yellow in thin section" } ], "name": "Color" }, { "scalars": [ { "value": "Commonly in prismatic crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Commonly as 60$^{\\circ}$ twins, less common as 90$^{\\circ}$ cruciform twins" } ], "name": "Twinning" }, { "scalars": [ { "value": "Distinct on {010}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Subconchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "7-7.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Subvitreous-resinous" } ], "name": "Luster" }, { "scalars": [ { "value": "White-grayish" } ], "name": "Streak" }, { "scalars": [ { "value": "3.74-3.83 3.686" } ], "conditions": [ { "scalars": [ { "value": "calc." }, { "value": "meas." } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.736-1.747" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.740-1.754" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.745-1.762" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.009-0.015" } ], "name": "Birefringence" }, { "scalars": [ { "value": "X=colorless, Y=pale yellow, Z=golden yellow" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "C 2/m" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Cristobalite", "title": "Wikipedia: Cristobalite" } ], "names": [ "Cristobalite" ], "chemicalFormula": "SiO$_{2}$", "properties": [ { "scalars": [ { "value": "Silicate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "04.DA.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "75.1.1.1" } ], "name": "Dana classification" }, { "scalars": [ { "value": "4.9709(1) A" } ], "name": "Unit cell (a)" }, { "scalars": [ { "value": "6.9278(2) A" } ], "name": "Unit cell (c)" }, { "scalars": [ { "value": "4 ($\\alpha$)" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "7.166 A" } ], "name": "Unit cell (a)" }, { "scalars": [ { "value": "8 ($\\beta$)" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless, white" } ], "name": "Color" }, { "scalars": [ { "value": "Octahedra or spherulites up-several cm large" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "on {111}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "6-7" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.487" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.484" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.003" } ], "name": "Birefringence" }, { "scalars": [ { "value": "None" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.32-2.36" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1713" } ], "units": "$^{\\circ}$C", "conditions": [ { "scalars": [ { "value": "$\\beta$" } ], "name": "Note" } ], "name": "Melting point" }, { "scalars": [ { "value": "4$_{1}$2$_{1}$2" } ], "name": "Space group" }, { "scalars": [ { "value": "cubic ($\\beta$) Fd$\\bar{3}$m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Coesite", "title": "Wikipedia: Coesite" } ], "names": [ "Coesite" ], "chemicalFormula": "SiO$_{2}$", "properties": [ { "scalars": [ { "value": "Tec-silicate" } ], "name": "Category" }, { "scalars": [ { "value": "04.DA.35" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "7.143" } ], "name": "Unit cell (a)" }, { "scalars": [ { "value": "12.383" } ], "name": "Unit cell (b)" }, { "scalars": [ { "value": "7.143" } ], "name": "Unit cell (c)" }, { "scalars": [ { "value": "120.00" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "16" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless" } ], "name": "Color" }, { "scalars": [ { "value": "Inclusions in UHP metamorphic minerals up-3 mm in size" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "none" } ], "name": "Cleavage" }, { "scalars": [ { "value": "conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "7.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "white" } ], "name": "Streak" }, { "scalars": [ { "value": "2.92" } ], "conditions": [ { "scalars": [ { "value": "calculated" } ], "name": "Note" } ], "name": "Density" }, { "scalars": [ { "value": "1.594" } ], "name": "Refractive index (n$_{x}$)" }, { "scalars": [ { "value": "1.595" } ], "name": "Refractive index (n$_{y}$)" }, { "scalars": [ { "value": "1.599" } ], "name": "Refractive index (n$_{z}$)" }, { "scalars": [ { "value": "+0.006" } ], "name": "Birefringence" }, { "scalars": [ { "value": "none" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "2/m" } ], "name": "Point group" }, { "scalars": [ { "value": "C2/c" } ], "name": "space group" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Chalcanthite", "title": "Wikipedia: Chalcanthite" } ], "names": [ "Chalcanthite" ], "chemicalFormula": "CuSO$_{4}$.5H$_{2}$O", "properties": [ { "scalars": [ { "value": "Sulfate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "6.11" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "10.673" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.95" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "97.58" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\alpha$)" }, { "scalars": [ { "value": "107.17" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "77.55" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\gamma$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "07.CB.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Berlin blue-sky-blue, greenish blue" } ], "name": "Color" }, { "scalars": [ { "value": "Typically stalactitic, encrusted, reniform or massive. Natural crystals are rare, but are short prismatic or tabular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Triclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Rare as cruciform twins" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {1$\\bar{1}$0}, interrupted on {110}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.514" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.537" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.543" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.029" } ], "name": "Birefringence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.12-2.3" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Soluble in water, turning it blue" } ], "name": "Solubility" }, { "scalars": [ { "value": "30px Poisonous" } ], "name": "Other" }, { "scalars": [ { "value": "Triclinic $\\bar{1}$ pinacoidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Epsomite", "title": "Wikipedia: Epsomite" } ], "names": [ "Epsomite" ], "chemicalFormula": "MgSO$_{4}$.7H$_{2}$O", "properties": [ { "scalars": [ { "value": "Sulfate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "07.CB.40" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "29.6.11.1" } ], "name": "Dana classification" }, { "scalars": [ { "value": "11.86" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "11.99" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.858" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "White, grey, colorless, or pink, greenish" } ], "name": "Color" }, { "scalars": [ { "value": "Acicular-fibrous encrustations" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Rarely observed on {110}" } ], "name": "Twinning" }, { "scalars": [ { "value": "{010} perfect {101} distinct" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, silky when fibrous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.67-1.68" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.433" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.455" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.461" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.028" } ], "name": "Birefringence" }, { "scalars": [ { "value": "In water" } ], "name": "Solubility" }, { "scalars": [ { "value": "2 2 2" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 2$_{1}$2$_{1}$2$_{1}$" } ], "name": "Space group" }, { "scalars": [ { "value": "Orthorhombic disphenoidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Niter", "title": "Wikipedia: Niter" } ], "names": [ "Niter" ], "chemicalFormula": "KNO$_{3}$", "properties": [ { "scalars": [ { "value": "Nitrates" } ], "name": "Category" }, { "scalars": [ { "value": "05.NA.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "18.1.2.1" } ], "name": "Dana classification" }, { "scalars": [ { "value": "white" } ], "name": "Color" }, { "scalars": [ { "value": "druse or acicular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "very good on {001}, good on {010}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "brittle" } ], "name": "Fracture" }, { "scalars": [ { "value": "2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.332" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.504" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.504" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "white" } ], "name": "Streak" }, { "scalars": [ { "value": "2.10" } ], "conditions": [ { "scalars": [ { "value": "calc." } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "soluble" } ], "name": "Solubility" }, { "scalars": [ { "value": "2/m 2/m 2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Nickeline", "title": "Wikipedia: Nickeline" } ], "names": [ "Nickeline" ], "chemicalFormula": "nickelarsenide:NiAs", "properties": [ { "scalars": [ { "value": "Arsenide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.CC.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "3.602" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.009 Z=2" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "Pale copper red with blackish tarnish. white with strong yellowish pink hue on polished section strongly aniso-rpic" } ], "name": "Color" }, { "scalars": [ { "value": "Massive columnar-reniform, rarely as dis-rted, horizontally striated, {1011} terminated crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Hexagonal dihexagonal dipyramidal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "On {1011} producing fourlings" } ], "name": "Twinning" }, { "scalars": [ { "value": "{1010} Imperfect, {0001} Imperfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5-5.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Strong" } ], "conditions": [ { "scalars": [ { "value": "reflected light" } ], "name": "Note" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "brownish black" } ], "name": "Streak" }, { "scalars": [ { "value": "7.8" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2" } ], "name": "Fusibility" }, { "scalars": [ { "value": "garlic odor on heating" } ], "name": "Other" }, { "scalars": [ { "value": "Hexagonal (6/m 2/m 2/m)" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Leucite", "title": "Wikipedia: Leucite" } ], "names": [ "Leucite" ], "chemicalFormula": "K[AlSi$_{2}$O$_{6}$]", "properties": [ { "scalars": [ { "value": "tec-silicates" } ], "name": "Category" }, { "scalars": [ { "value": "9.GB.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "13.056" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "13.751" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "16" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "White-grey" } ], "name": "Color" }, { "scalars": [ { "value": "Commonly as euhedral, pseudocubic crystals, rarely granular, massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Tetragonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Common and repeated on {110} and {101}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Poor on {110}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5.5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "2.45-2.50" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.508" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.509" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.001" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Tetragonal 4/m dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Epidote", "title": "Wikipedia: Epidote" } ], "names": [ "Epidote" ], "chemicalFormula": "{Ca$_{2}$}{Al$_{2}$Fe$^{3+}$}[OOHSiO$_{4}$Si$_{2}$O$_{7}$]", "properties": [ { "scalars": [ { "value": "Sorosilicates" } ], "name": "Category" }, { "scalars": [ { "value": "Pistachio-green, yellow-green, greenish black" } ], "name": "Color" }, { "scalars": [ { "value": "Prismatic with striations, fibrous, massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic-Prismatic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "On [100]" } ], "name": "Twinning" }, { "scalars": [ { "value": "{001} perfect and {100} imperfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Flat regular-uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "6-7" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-resinous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.715-1.751" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.725-1.784" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.734-1.797" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.019-0.046" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Strong" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Greyish white" } ], "name": "Streak" }, { "scalars": [ { "value": "3.3-3.6" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Magnesite", "title": "Wikipedia: Magnesite" } ], "names": [ "Magnesite" ], "chemicalFormula": "MgCO$_{3}$", "properties": [ { "scalars": [ { "value": "Carbonate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "05.AB.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Colorless, white, pale yellow, pale brown, faintly pink, lilactorose" } ], "name": "Color" }, { "scalars": [ { "value": "Usually massive, rarely as rhombohedrons or hexagonal prisms" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal-Hexagonal Scalenohedral H-M Symbol $\\bar{3}$2/m Space Group: R$\\bar{3}$c" } ], "name": "Crystal system" }, { "scalars": [ { "value": "[10$\\bar{1}$1] perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3.5-4.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.508-1.510" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.700" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.191" } ], "name": "Birefringence" }, { "scalars": [ { "value": "white" } ], "name": "Streak" }, { "scalars": [ { "value": "3.0-3.2" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "infusible" } ], "name": "Fusibility" }, { "scalars": [ { "value": "Effervesces in hot HCl" } ], "name": "Solubility" }, { "scalars": [ { "value": "May exhibit pale green-pale blue fluorescence and phosphorescence under UV, triboluminescent" } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Proustite", "title": "Wikipedia: Proustite" } ], "names": [ "Proustite" ], "chemicalFormula": "Ag$_{3}$AsS$_{3}$", "properties": [ { "scalars": [ { "value": "Sulfosalt mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.GA.05 Neso-sulfarsenites" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "03.04.01.01 Proustite group" } ], "name": "Dana classification" }, { "scalars": [ { "value": "10.79" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8.69 Z=6" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "Scarlet-vermilion" } ], "name": "Color" }, { "scalars": [ { "value": "Crystals prismatic and scalenohedral, massive, compact" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal-Hexagonal Scalenohedral Space Group: R $\\bar{3}$c" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Common" } ], "name": "Twinning" }, { "scalars": [ { "value": "Distinct on {10$\\bar{1}$1}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal-uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2-2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine" } ], "name": "Luster" }, { "scalars": [ { "value": "Vermilion" } ], "name": "Streak" }, { "scalars": [ { "value": "5.57" }, { "value": "5.625" } ], "conditions": [ { "scalars": [ { "value": "measured" }, { "value": "calculated" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "3.087-3.088" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "2.792" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.295-0.296" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Moderate, cochineal-red-blood-red" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "$\\bar{3}$2/m" } ], "name": "H-M symbol" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Psilomelane", "title": "Wikipedia: Psilomelane" } ], "names": [ "Psilomelane" ], "chemicalFormula": "The general formula", "properties": [ { "scalars": [ { "value": "Manganese oxides" } ], "name": "Category" }, { "scalars": [ { "value": "590.03" } ], "units": "gm", "name": "Molecular weight" }, { "scalars": [ { "value": "black with gray pyrolusite bands" } ], "name": "Color" }, { "scalars": [ { "value": "Botryoidal, Mammillary, Reniform" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "none" } ], "name": "Cleavage" }, { "scalars": [ { "value": "conchoidal and uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "5.0-6.0" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Sub-Metallic, Dull" } ], "name": "Luster" }, { "scalars": [ { "value": "vitreous-subadamantine" } ], "name": "Polish" }, { "scalars": [ { "value": "brownish black" } ], "name": "Streak" }, { "scalars": [ { "value": "3.7-4.7" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "in hydrochloric acid" } ], "name": "Solubility" }, { "scalars": [ { "value": "hard black manganese oxides such as hollandite and romanechite" } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Hapkeite", "title": "Wikipedia: Hapkeite" } ], "names": [ "Hapkeite" ], "chemicalFormula": "Fe$_{2}$Si", "properties": [ { "scalars": [ { "value": "Native element minerals" } ], "name": "Category" }, { "scalars": [ { "value": "01.BB.35" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "2.831" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "silvery, with a slight tarnish" } ], "name": "Color" }, { "scalars": [ { "value": "m3m (4/m $\\bar{3}$ 2/m)-Hexoctahedral" } ], "name": "Crystal system" }, { "scalars": [ { "value": "metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Isometric" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Wulfenite", "title": "Wikipedia: Wulfenite" } ], "names": [ "Wulfenite" ], "chemicalFormula": "PbMoO$_{4}$", "properties": [ { "scalars": [ { "value": "Molybdate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "07.GA.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.433" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "12.110" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Orange-yellow, yellow, honey-yellow, reddish-orange, rarely colorless, grey, brown, olive-green and even black" } ], "name": "Color" }, { "scalars": [ { "value": "Thin tabular-pyramidal" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Tetragonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Twins on the [001] common" } ], "name": "Twinning" }, { "scalars": [ { "value": "On {011}, distinct, on {001}, {013}, indistinct" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Irregular-sub-conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2.75-3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine, resinous" } ], "name": "Luster" }, { "scalars": [ { "value": "2.405" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "2.283" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.122" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Weak, orange and yellow" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "None" } ], "name": "fluorescence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "6.5-7.0" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Specimens may be piezoelectric" } ], "name": "Other" }, { "scalars": [ { "value": "4/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "I 4$_{1}$/a" } ], "name": "Space group" }, { "scalars": [ { "value": "Tetragonal dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Chromite", "title": "Wikipedia: Chromite" } ], "names": [ "Chromite" ], "chemicalFormula": "(Fe, Mg)Cr$_{2}$O$_{4}$", "properties": [ { "scalars": [ { "value": "Oxide minerals , Spinel group , Spinel structural group" } ], "name": "Category" }, { "scalars": [ { "value": "8.344" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "04.BB.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Black-brownish black, brown-brownish black on thin edges in transmitted light" } ], "name": "Color" }, { "scalars": [ { "value": "Octahedral rare, massive-granular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Isometric" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Spinel law on {1ll}" } ], "name": "Twinning" }, { "scalars": [ { "value": "None, parting may develop along {111}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Submetallic" } ], "name": "Luster" }, { "scalars": [ { "value": "2.08-2.16" } ], "name": "Refractive index (n)" }, { "scalars": [ { "value": "Brown" } ], "name": "Streak" }, { "scalars": [ { "value": "4.5-4.8" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Weakly magnetic" } ], "name": "Other" }, { "scalars": [ { "value": "4/m$\\bar{3}$ 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "F d3m" } ], "name": "Space group" }, { "scalars": [ { "value": "Isometric hexoctahedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Zinkenite", "title": "Wikipedia: Zinkenite" } ], "names": [ "Zinkenite" ], "chemicalFormula": "Pb$_{9}$Sb$_{22}$S$_{42}$", "properties": [ { "scalars": [ { "value": "Sulfosalt minerals" } ], "name": "Category" }, { "scalars": [ { "value": "02.JB.35a" } ], "name": "Strunz classification" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Smithsonite", "title": "Wikipedia: Smithsonite" } ], "names": [ "Smithsonite" ], "chemicalFormula": "ZnCO$_{3}$", "properties": [ { "scalars": [ { "value": "Carbonate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "05.AB.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "4.6526(7)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "15.0257(22)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "6" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "White, grey, yellow, green-apple-green, blue, pink, purple, bluish grey, and brown" } ], "name": "Color" }, { "scalars": [ { "value": "Uncommon as crystals, typically botryoidal, reniform, spherulitic, stalactitic, earthy, compact massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal-Hexagonal Scalenohedral" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None observed" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on [1011]" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven, sub-conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "4.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, may be pearly" } ], "name": "Luster" }, { "scalars": [ { "value": "1.842-1.850" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.619-1.623" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.223-0.227" } ], "name": "Birefringence" }, { "scalars": [ { "value": "May fluoresce pale green or pale blue under UV" } ], "name": "fluorescence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "4.4-4.5" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Trigonal $\\bar{3}$ 2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Coffinite", "title": "Wikipedia: Coffinite" } ], "names": [ "Coffinite" ], "chemicalFormula": "U(SiO$_{4}$)$_{1-x}$(OH)$_{4x}$", "properties": [ { "scalars": [ { "value": "Nesosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.AD.30" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "6.97" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "6.25" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "3" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Black (from organic inclusions, pale-dark brown in thin section" } ], "name": "Color" }, { "scalars": [ { "value": "Rarely as crystals, commonly as colloform-botryoidal incrustations, fibrous, pulverulent masses" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Tetragonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Irregular-subconchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle-friable" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Dull-adamantine" } ], "name": "Luster" }, { "scalars": [ { "value": "Grayish black" } ], "name": "Streak" }, { "scalars": [ { "value": "5.1" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.730-1.750" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.730-1.750" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.730" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Moderate, pale yellow-brown parallel-and medium brown perpendicular-long axis" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Radioactive" } ], "name": "Other" }, { "scalars": [ { "value": "Tetragonal 4/m 2/m 2/m ditetragonal dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Calaverite", "title": "Wikipedia: Calaverite" } ], "names": [ "Calaverite" ], "chemicalFormula": "AuTe$_{2}$", "properties": [ { "scalars": [ { "value": "Telluride mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.EA.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "7.19" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "4.4" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.08" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "90.3" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "452.17" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "Brass yellow-silver white" } ], "name": "Color" }, { "scalars": [ { "value": "Bladed and slender striated prisms, also massive granular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Common on [110]" } ], "name": "Twinning" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven-subconchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2.5-3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Weak" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "None" } ], "name": "fluorescence" }, { "scalars": [ { "value": "Green-yellow grey" } ], "name": "Streak" }, { "scalars": [ { "value": "9.1-9.3" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Monoclinic prismatic 2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Sylvanite", "title": "Wikipedia: Sylvanite" } ], "names": [ "Sylvanite" ], "chemicalFormula": "(Ag,Au)Te$_{2}$", "properties": [ { "scalars": [ { "value": "Telluride mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.EA.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "429.89" } ], "units": "gm", "name": "Molecular weight" }, { "scalars": [ { "value": "Silver-grey, Silver-white" } ], "name": "Color" }, { "scalars": [ { "value": "Massive-Crystalline" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic-Prismatic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on the {010}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "1.5-2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "None" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "None" } ], "name": "fluorescence" }, { "scalars": [ { "value": "steel grey" } ], "name": "Streak" }, { "scalars": [ { "value": "8.2" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "8.1" } ], "name": "Density" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Acanthite", "title": "Wikipedia: Acanthite" } ], "names": [ "Acanthite" ], "chemicalFormula": "Ag$_{2}$S", "properties": [ { "scalars": [ { "value": "Sulfide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.BA.30a" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "4.229" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "6.931" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "7.862" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "99.61" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Iron-black" } ], "name": "Color" }, { "scalars": [ { "value": "Primary crystals rare, prismatic-long prismatic, elongated along [001], may be tubular, massive. Commonly paramorphic after the cubic high-temperature phase , of original cubic or octahedral habit" } ], "conditions": [ { "scalars": [ { "value": "\\xe2\\x80\\x9cargentite\\xe2\\x80\\x9d" } ], "name": "Note" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Polysynthetic on {111}, may be very complex due-inversion, contact on {101}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Indistinct" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Sectile" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2.0-2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Black" } ], "name": "Streak" }, { "scalars": [ { "value": "7.20-7.22" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Monoclinic 2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Bischofite", "title": "Wikipedia: Bischofite" } ], "names": [ "Bischofite" ], "chemicalFormula": "MgCl$_{2}$.6H$_{2}$O", "properties": [ { "scalars": [ { "value": "Halide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "03.BB.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "09.02.09.01" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Colorless-white" } ], "name": "Color" }, { "scalars": [ { "value": "Fibrous-massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic-prismatic (2/m)" } ], "name": "Crystal system" }, { "scalars": [ { "value": "polysynthetic" } ], "name": "Twinning" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal-uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "1.5-2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-greasy" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "1.56" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.495" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.507" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.528" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "Deliquescent" } ], "name": "Solubility" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Diaspore", "title": "Wikipedia: Diaspore" } ], "names": [ "Diaspore" ], "chemicalFormula": "AlO(OH)", "properties": [ { "scalars": [ { "value": "Oxide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "04.FD.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "4.4007(6)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "9.4253(13)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "2.8452(3)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "White, pale gray, colorless, greenish gray, brown, pale yellow, pink, purple, may exhibit color change" } ], "name": "Color" }, { "scalars": [ { "value": "Platey, elongated-acicular crystals, also stalactitic, foliated, scaly, disseminated and massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic dipyramidal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Forms heart shaped twins on {021} or pseudohexagonal aggregates" } ], "name": "Twinning" }, { "scalars": [ { "value": "{010} perfect, {110} distinct, {100} in traces" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Very brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "6.5-7" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine, vitreous, pearly on cleavage faces" } ], "name": "Luster" }, { "scalars": [ { "value": "3.1-3.4" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.682-1.706" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.705-1.725" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.730-1.752" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.048" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Strong" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Infusible" } ], "name": "Fusibility" }, { "scalars": [ { "value": "Insoluble" } ], "name": "Solubility" }, { "scalars": [ { "value": "Decrepitates releasing water in closed tube on heating" } ], "name": "Other" }, { "scalars": [ { "value": "Orthorhombic 2/m 2/m 2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Goslarite", "title": "Wikipedia: Goslarite" } ], "names": [ "Goslarite" ], "chemicalFormula": "ZnSO$_{4}$.7(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Sulfate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "07.CB.40" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "11.8176" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "12.0755" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.827" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "287.56" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "Colorless, pinkish, white, greenish, green, blue, green blue, bluish and brownish" } ], "name": "Color" }, { "scalars": [ { "value": "Acicular, massive, stalactitic" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{010} perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2.0-2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "conditions": [ { "scalars": [ { "value": "glassy" } ], "name": "Note" } ], "name": "Luster" }, { "scalars": [ { "value": "1.447-1.463" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.475-1.480" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.470-1.485" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.0220-0.0230" } ], "name": "Birefringence" }, { "scalars": [ { "value": "none" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "1.96" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2 2 2" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 2$_{1}$2$_{1}$2$_{1}$" } ], "name": "Space group" }, { "scalars": [ { "value": "Orthorhombic disphenoidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Iodargyrite", "title": "Wikipedia: Iodargyrite" } ], "names": [ "Iodargyrite" ], "chemicalFormula": "AgI", "properties": [ { "scalars": [ { "value": "Halide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "03.AA.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "4.59" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "7.51" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "Colourless , pale yellow, yellow, greenish yellow, brownish, grayish" } ], "conditions": [ { "scalars": [ { "value": "fresh" } ], "name": "Note" } ], "name": "Color" }, { "scalars": [ { "value": "Hexagonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "1.5-2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine, resinous" } ], "name": "Luster" }, { "scalars": [ { "value": "Yellow" } ], "conditions": [ { "scalars": [ { "value": "shining" } ], "name": "Note" } ], "name": "Streak" }, { "scalars": [ { "value": "5.69" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.210" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "2.220" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.010" } ], "name": "Birefringence" }, { "scalars": [ { "value": "6mm-Dihexagonal Pyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Kieserite", "title": "Wikipedia: Kieserite" } ], "names": [ "Kieserite" ], "chemicalFormula": "MgSO$_{4}$.H$_{2}$O", "properties": [ { "scalars": [ { "value": "Sulfate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "07.CB.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "29.6.2.1" } ], "name": "Dana classification" }, { "scalars": [ { "value": "7.51" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "7.61" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.92" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "116.17" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "Colorless, grayish-white or yellowish" } ], "name": "Color" }, { "scalars": [ { "value": "Massive, granular, rarely as pyramidal crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Contact on {001}, polysynthetic about [110]" } ], "name": "Twinning" }, { "scalars": [ { "value": "{110} and {111} perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Fragile" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-dull" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.57" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.520" } ], "name": "Refractive index (n$\\alpha$)" }, { "scalars": [ { "value": "1.533" } ], "name": "Refractive index (n$\\beta$)" }, { "scalars": [ { "value": "1.584" } ], "name": "Refractive index (n$\\gamma$)" }, { "scalars": [ { "value": "0.064" } ], "name": "Birefringence" }, { "scalars": [ { "value": "In water" } ], "name": "Solubility" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "C2/c" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Sylvite", "title": "Wikipedia: Sylvite" } ], "names": [ "Sylvite" ], "chemicalFormula": "KCl", "properties": [ { "scalars": [ { "value": "Halide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "03.AA.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "6.2931" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "74.55" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "Colorless-white, pale gray, pale blue, may be yellowish red" } ], "name": "Color" }, { "scalars": [ { "value": "As cubes and octahedra, columnar, in crusts, coarse granular, massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Isometric" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on [100], [010], [001]" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle-ductile" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.4903" } ], "name": "Refractive index" }, { "scalars": [ { "value": "Visible in colored crystals" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "None" } ], "name": "fluorescence" }, { "scalars": [ { "value": "white" } ], "name": "Streak" }, { "scalars": [ { "value": "1.993" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Soluble in water" } ], "name": "Solubility" }, { "scalars": [ { "value": "salty-bitter taste" } ], "name": "Other" }, { "scalars": [ { "value": "4/m$\\bar{3}$2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "F m3m" } ], "name": "Space group" }, { "scalars": [ { "value": "Isometric hexoctahedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Melanterite", "title": "Wikipedia: Melanterite" } ], "names": [ "Melanterite" ], "chemicalFormula": "FeSO$_{4}$.7H$_{2}$O", "properties": [ { "scalars": [ { "value": "Sulfate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "07.CB.35" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "29.06.10.01" } ], "name": "Dana classification" }, { "scalars": [ { "value": "14.077" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "6.509" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "11.054" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "105.6" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Green, pale green, greenish blue, bluish green, colorless" } ], "name": "Color" }, { "scalars": [ { "value": "Encrustations and capillary efflorescences, rarely as equant pseudo-octahedral, prismatic or tabular crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{001} Perfect, {110} Distinct" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "1.89-1.9" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.470-1.471" } ], "name": "Refractive index (n$\\alpha$)" }, { "scalars": [ { "value": "1.477-1.480" } ], "name": "Refractive index (n$\\beta$)" }, { "scalars": [ { "value": "1.486" } ], "name": "Refractive index (n$\\gamma$)" }, { "scalars": [ { "value": "Monoclinic 2/m prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Phlogopite", "title": "Wikipedia: Phlogopite" } ], "names": [ "Phlogopite" ], "chemicalFormula": "KMg$_{3}$(AlSi$_{3}$O$_{10}$)(F,OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Mica phyllosilicates" } ], "name": "Category" }, { "scalars": [ { "value": "Brownish red, dark brown, yellowish brown, green, white" } ], "name": "Color" }, { "scalars": [ { "value": "Tabular, scaly masses, rarely perfect phenocryst tablets" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic (2/m) Space Group: C 2/m" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Composition twinning" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect basal [001]" } ], "name": "Cleavage" }, { "scalars": [ { "value": "None" } ], "name": "Fracture" }, { "scalars": [ { "value": "Tough, flexible thin laminae" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2-2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Pearly, sometimes slightly metallic on cleavage surfaces" } ], "name": "Luster" }, { "scalars": [ { "value": "1.530-1.573" } ], "name": "Refractive index (n$\\alpha$)" }, { "scalars": [ { "value": "1.557-1.617" } ], "name": "Refractive index (n$\\beta$)" }, { "scalars": [ { "value": "1.558-1.618" } ], "name": "Refractive index (n$\\gamma$)" }, { "scalars": [ { "value": "0.0280-0.0450" } ], "name": "Birefringence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.78-2.85" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Fluorescent" } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Weloganite", "title": "Wikipedia: Weloganite" } ], "names": [ "Weloganite" ], "chemicalFormula": "Na$_{2}$(Sr,Ca)$_{3}$Zr(CO$_{3}$)$_{6}$.3H$_{2}$O", "properties": [ { "scalars": [ { "value": "Carbonate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "05.CC.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "15.3.4.4" } ], "name": "Dana classification" }, { "scalars": [ { "value": "8.966" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8.98" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.73" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "102.72" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\alpha$)" }, { "scalars": [ { "value": "116.65" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "60.06" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\gamma$)" }, { "scalars": [ { "value": "1" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "814.16" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "Yellow, pale yellow, amber, tan, white" } ], "name": "Color" }, { "scalars": [ { "value": "Roughly hexagonal, tapering crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Triclinic, pseudorhombohedral" } ], "name": "Crystal system" }, { "scalars": [ { "value": "About [103] repeated at 120 degrees" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on pseudo {0001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "3.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.20-3.22" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.558" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.646" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.640" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.082" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Pyroelectric. triboluminescent." } ], "name": "Other" }, { "scalars": [ { "value": "Triclinic $\\bar{1}$ pinacoidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Tugtupite", "title": "Wikipedia: Tugtupite" } ], "names": [ "Tugtupite" ], "chemicalFormula": "Na$_{4}$(AlBeSi$_{4}$O$_{12}$)Cl", "properties": [ { "scalars": [ { "value": "Tec-silicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.FB.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Tetragonal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Hydrozincite", "title": "Wikipedia: Hydrozincite" } ], "names": [ "Hydrozincite" ], "chemicalFormula": "Zn$_{5}$(CO$_{3}$)$_{2}$(OH)$_{6}$", "properties": [ { "scalars": [ { "value": "Carbonate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "05.BA.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "13.58" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "6.28" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.41" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "95.51" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "White-grey, stained pale pink, or pale yellow or brown, colourless in transmitted light." } ], "name": "Color" }, { "scalars": [ { "value": "Lathlike or bladed crystals uncommon, in fibrous, stalactitic, reniform, pisolitic aggregates, also earthy, chalky, massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Contact twinning on {100}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {100}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Irregular/uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Very brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2-2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Silky, pearly, dull, earthy" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.5-4" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.630" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.642" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.750" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.120" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Fluoresces pale blue-lilac under UV" } ], "name": "fluorescence" }, { "scalars": [ { "value": "Readily soluble in acids." } ], "name": "Solubility" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Auricupride", "title": "Wikipedia: Auricupride" } ], "names": [ "Auricupride" ], "chemicalFormula": "Cu$_{3}$Au", "properties": [ { "scalars": [ { "value": "Native elements" } ], "name": "Category" }, { "scalars": [ { "value": "01.AA.10a" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "1.1.2.1" } ], "name": "Dana classification" }, { "scalars": [ { "value": "387.60" } ], "units": "gm", "name": "Molecular weight" }, { "scalars": [ { "value": "Yellow with reddish tint" } ], "name": "Color" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Malleable" } ], "name": "Fracture" }, { "scalars": [ { "value": "3.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "yellow" } ], "name": "Streak" }, { "scalars": [ { "value": "Non-fluorescent" } ], "name": "fluorescence" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Chalcocite", "title": "Wikipedia: Chalcocite" } ], "names": [ "Chalcocite" ], "chemicalFormula": "copper(I) sulfide: Cu$_{2}$S", "properties": [ { "scalars": [ { "value": "Sulfide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "15.246(4)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "11.884(2)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "13.494(3)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "116.35(1)" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "96" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "02.BA.05a" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Dark gray-black" } ], "name": "Color" }, { "scalars": [ { "value": "Tabular-prismatic crystals also massive-granular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic, pseudo-orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Common on {110} yielding pseudohexagonal stellate forms" } ], "name": "Twinning" }, { "scalars": [ { "value": "Indistinct on {110}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle-sectile" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2.5-3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Shiny black-lead gray" } ], "name": "Streak" }, { "scalars": [ { "value": "5.5-5.8" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2-2.5" } ], "name": "Fusibility" }, { "scalars": [ { "value": "Monoclinic 2/m-Prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Aurichalcite", "title": "Wikipedia: Aurichalcite" } ], "names": [ "Aurichalcite" ], "chemicalFormula": "(Zn,Cu)$_{5}$[(OH)$_{3}$CO$_{3}$]$_{2}$", "properties": [ { "scalars": [ { "value": "Carbonate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "05.BA.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "13.82" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "6.419" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.29" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "101.04" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Pale green, greenish blue, sky-blue, colorless-pale blue, pale green in transmitted light" } ], "name": "Color" }, { "scalars": [ { "value": "Typically in tufted divergent sprays or spherical aggregates, may be in thick crusts, rarely columnar, laminated or granular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic-prismatic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Observed in X-ray patterns" } ], "name": "Twinning" }, { "scalars": [ { "value": "{010} and {100} Perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Pearly, silky" } ], "name": "Luster" }, { "scalars": [ { "value": "1.655" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.740" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.744" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.0890" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Weak colorless-pale green" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Light blue" } ], "name": "Streak" }, { "scalars": [ { "value": "3.96" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Monoclinic 2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Autunite", "title": "Wikipedia: Autunite" } ], "names": [ "Autunite" ], "chemicalFormula": "Ca(UO$_{2}$)$_{2}$(PO$_{4}$)$_{2}$.10-12H$_{2}$O", "properties": [ { "scalars": [ { "value": "Phosphate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.EB.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "14.0135(6)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "20.7121(8)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.9959(3)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Lemon-yellow-sulfur-yellow, greenish yellow-pale green, may be dark green-greenish black" } ], "name": "Color" }, { "scalars": [ { "value": "Tabular crystals, foliated or scaly aggregates, and in crusts" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Rare on {110}" } ], "name": "Twinning" }, { "scalars": [ { "value": "{001} perfect, {100} and {010} poor" } ], "name": "Cleavage" }, { "scalars": [ { "value": "uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "2-2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-pearly" } ], "name": "Luster" }, { "scalars": [ { "value": "Pale yellow" } ], "name": "Streak" }, { "scalars": [ { "value": "3.1-3.2" } ], "name": "Specific gravity" }, { "scalars": [ { "value": ".15" } ], "name": "Density" }, { "scalars": [ { "value": "1.553-1.555" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.575" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.577-1.578" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.003" } ], "name": "Birefringence" }, { "scalars": [ { "value": "X=colorless-pale yellow, Y=Z=yellow-dark yellow" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Strong yellow-green \\xef\\xac\\x82uorescence in UV, Radioactive" } ], "name": "fluorescence" }, { "scalars": [ { "value": "Soluble in acids" } ], "name": "Solubility" }, { "scalars": [ { "value": "Pseudotetragonal for synthetic material" } ], "name": "Other" }, { "scalars": [ { "value": "2/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "Pnma" } ], "name": "Space group" }, { "scalars": [ { "value": "Orthorhombic dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Creedite", "title": "Wikipedia: Creedite" } ], "names": [ "Creedite" ], "chemicalFormula": "Ca$_{3}$Al$_{2}$(SO$_{4}$)(F,OH)$_{10}$.2(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Sulfate and halide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "03.CG.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "13.91" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8.58" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "10" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "94.4" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless, white, violet, orange" } ], "name": "Color" }, { "scalars": [ { "value": "Generally appears as anhedral-subhedral in matrix, bladelike prismatic and radial, drusy-granular aggregates" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {100}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "1.461" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.478" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.485" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.024" } ], "name": "Birefringence" }, { "scalars": [ { "value": "2.71" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Monoclinic 2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Cuprite", "title": "Wikipedia: Cuprite" } ], "names": [ "Cuprite" ], "chemicalFormula": "Cu$_{2}$O", "properties": [ { "scalars": [ { "value": "Oxide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "04.AA.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "4.1.1.1" } ], "name": "Dana classification" }, { "scalars": [ { "value": "4.2685" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "77.77" } ], "units": "$\\AA^3$", "name": "Unit cell volume" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Dark red-conchineal red, sometimes almost black" } ], "name": "Color" }, { "scalars": [ { "value": "Cubic, octahedral, and dodecahedral crystals, as hairlike capillary forms, earthy, compact granular and massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Cubic hexoctahedral" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Penetration twins" } ], "name": "Twinning" }, { "scalars": [ { "value": "Fair in four directions forming octahedrons" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal-uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3.5-4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine, sub-metallic, earthy" } ], "name": "Luster" }, { "scalars": [ { "value": "Shining metallic brownish-red" } ], "name": "Streak" }, { "scalars": [ { "value": "6.14" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.849" } ], "name": "Refractive index (n)" }, { "scalars": [ { "value": "Visible" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Cubic (4/m $\\bar{3}$ 2/m)" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Dioptase", "title": "Wikipedia: Dioptase" } ], "names": [ "Dioptase" ], "chemicalFormula": "CuSiO$_{3}$.H$_{2}$O", "properties": [ { "scalars": [ { "value": "Cyclosilicates" } ], "name": "Category" }, { "scalars": [ { "value": "09.CJ.30" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "14.566" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "7.778" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "18" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Dark blue green, emerald green" } ], "name": "Color" }, { "scalars": [ { "value": "Six sided prisms terminated by rhombohedrons-massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect in three directions" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.652-1.658" } ], "name": "Refractive index (n$\\omega$)" }, { "scalars": [ { "value": "1.704-1.710" } ], "name": "Refractive index (n$\\epsilon$)" }, { "scalars": [ { "value": "0.052" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Green" } ], "name": "Streak" }, { "scalars": [ { "value": "3.28-3.35" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Trigonal $\\bar{3}$ Rhombohedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Murdochite", "title": "Wikipedia: Murdochite" } ], "names": [ "Murdochite" ], "chemicalFormula": "PbCu$_{6}$O$_{8-x}$(Cl,Br)$_{2x}$(x $\\,eq$ 0.5)", "properties": [ { "scalars": [ { "value": "Halide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "03.DB.45" } ], "name": "Strunz classification" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Realgar", "title": "Wikipedia: Realgar" } ], "names": [ "Realgar" ], "chemicalFormula": "As$_{4}$S$_{4}$ or AsS", "properties": [ { "scalars": [ { "value": "Sulfide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.FA.15a" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "9.325(3)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "13.571(5)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.587(3)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "106.43" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "16" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Red-yellow-orange, in polished section, pale gray, with abundant yellow-red internal reflections" } ], "name": "Color" }, { "scalars": [ { "value": "Prismatic striated crystals, more commonly massive, coarse-fine granular, or as incrustations" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Contact twins on {100}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Good on {010}, less so on {101}, {100}, {120}, and {110}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Sectile, slightly brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "1.5-2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Resinous-greasy" } ], "name": "Luster" }, { "scalars": [ { "value": "Red-orange-red" } ], "name": "Streak" }, { "scalars": [ { "value": "3.56" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.538" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "2.684" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "2.704" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.166" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Nearly colorless-pale golden yellow" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Toxic and carcinogenic." } ], "name": "Other" }, { "scalars": [ { "value": "Monoclinic 2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Pyrolusite", "title": "Wikipedia: Pyrolusite" } ], "names": [ "Pyrolusite" ], "chemicalFormula": "MnO$_{2}$", "properties": [ { "scalars": [ { "value": "Oxide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "04.DB.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Darkish, black-lighter grey, sometimes bluish" } ], "name": "Color" }, { "scalars": [ { "value": "Granular-massive: botryoidal. Crystals rare" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Tetragonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{031}, {032} may be polysynthetic" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on 110" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Fracture" }, { "scalars": [ { "value": "6-6.5, 2 when massive" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic, dull-earthy" } ], "name": "Luster" }, { "scalars": [ { "value": "Opaque" } ], "name": "Refractive index" }, { "scalars": [ { "value": "Black-bluish-black" } ], "name": "Streak" }, { "scalars": [ { "value": "4.4-5.06" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Scheelite", "title": "Wikipedia: Scheelite" } ], "names": [ "Scheelite" ], "chemicalFormula": "CaWO$_{4}$", "properties": [ { "scalars": [ { "value": "Tungstate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "07.GA.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.2429(3)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "11.3737(6)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless, white, gray, brown, pale yellow, yellow-orange, pale shades of orange, red, green, may be compositionally color zoned" } ], "name": "Color" }, { "scalars": [ { "value": "Pseudo-octahedra, massive, columnar, granular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Tetragonal-Dipyramidal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Common, penetration and contact twins, composition plane {110} or {001}" } ], "name": "Twinning" }, { "scalars": [ { "value": "On {101}, distinct, on {112}, interrupted, on {001}, indistinct" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Subconchoidal-uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "4.5-5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-adamantine" } ], "name": "Luster" }, { "scalars": [ { "value": "1.918-1.921" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.935-1.938" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.017" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Definite dichoric in yellow" } ], "conditions": [ { "scalars": [ { "value": "yellow-orange-brown" } ], "name": "Note" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "5.9-6.1" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "With difficulty" } ], "name": "Fusibility" }, { "scalars": [ { "value": "Soluble in acids" } ], "name": "Solubility" }, { "scalars": [ { "value": "Fluorescence under short-wave UV is bright blue, bluish white-yellow. Specimens with more molybdenum tend-fluoresce white-yellow, similar-powellite. Occasionally fluoresces red under mid-wave UV." } ], "name": "Other" }, { "scalars": [ { "value": "Tetragonal 4/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Siderite", "title": "Wikipedia: Siderite" } ], "names": [ "Siderite" ], "chemicalFormula": "FeCO$_{3}$", "properties": [ { "scalars": [ { "value": "Carbonate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "05.AB.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "14.01.01.03" } ], "name": "Dana classification" }, { "scalars": [ { "value": "4.6916" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "15.3796" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "6" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Pale yellow-tannish, grey, brown, green, red, black and sometimes nearly colorless" } ], "name": "Color" }, { "scalars": [ { "value": "Tabular crystals, often curved-botryoidal-massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal-Hexagonal scalenohedral ($\\bar{3}$ 2/m)" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Lamellar uncommon on{01$\\bar{1}$2}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {01$\\bar{1}$1}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven-conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3.75-4.25" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, may be silky-pearly" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.96" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.875" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.633" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.242" } ], "name": "Birefringence" }, { "scalars": [ { "value": "$\\bar{3}$2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "R $\\bar{3}$c" } ], "name": "Space group" }, { "scalars": [ { "value": "Trigonal hexagonal scalenohedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Tennantite", "title": "Wikipedia: Tennantite" } ], "names": [ "Tennantite" ], "chemicalFormula": "Cu$_{6}$[Cu$_{4}$(Fe,Zn)$_{2}$]As$_{4}$S$_{13}$", "properties": [ { "scalars": [ { "value": "Sulfosalt minerals" } ], "name": "Category" }, { "scalars": [ { "value": "02.GB.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Flint-gray-iron-black, cherry-red in transmitted light" } ], "name": "Color" }, { "scalars": [ { "value": "massive-well formed crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Cubic Hextetrahedral H-M Symbol ($\\bar{4}$3m) Space Group: I $\\bar{4}$3m" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Contact and penetration twins" } ], "name": "Twinning" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Subconchoidal-uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Somewhat brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3-4.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic, commonly splendent" } ], "name": "Luster" }, { "scalars": [ { "value": "reddish gray" } ], "name": "Streak" }, { "scalars": [ { "value": "gray, inclining-black-brown-cherry-red" } ], "name": "Polish" }, { "scalars": [ { "value": "n" } ], "name": "Refractive index" }, { "scalars": [ { "value": "greater" } ], "name": "Refractive index" }, { "scalars": [ { "value": "than" } ], "name": "Refractive index" }, { "scalars": [ { "value": "2.72" } ], "name": "Refractive index" }, { "scalars": [ { "value": "4.65" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Anhydrite", "title": "Wikipedia: Anhydrite" } ], "names": [ "Anhydrite" ], "chemicalFormula": "Anhydrous calcium sulfate:CaSO$_{4}$", "properties": [ { "scalars": [ { "value": "Sulfate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "07.AD.30" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "28.3.2.1" } ], "name": "Dana classification" }, { "scalars": [ { "value": "6.245(1)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "6.995(2)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.993(2)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless-pale blue or violet if transparent, white, mauve, rose, pale brown or gray from included impurities" } ], "name": "Color" }, { "scalars": [ { "value": "Rare tabular and prismatic crystals. Usually occurs as fibrous, parallel veins that break off in-cleavage fragments. Also occurs as grainy, massive, or nodular masses" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic-dipyramidal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Simple or repeatedly on {011} common, contact twins rare on {120}" } ], "name": "Twinning" }, { "scalars": [ { "value": "[010] perfect, [100] perfect, [001] good, resulting in pseudocubic fragments" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Pearly on {010}, vitreous-greasy on {001}, vitreous on {100}" } ], "name": "Luster" }, { "scalars": [ { "value": "1.567-1.574" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.574-1.579" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.609-1.618" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.042-0.044" } ], "name": "Birefringence" }, { "scalars": [ { "value": "For violet varieties , X=colorless-pale yellow or rose, Y=pale violet or rose, Z=violet." } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.97" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2" } ], "name": "Fusibility" }, { "scalars": [ { "value": "Some specimens fluoresce, many more fluoresce after heating" } ], "name": "Other" }, { "scalars": [ { "value": "Orthorhombic 2/m 2/m 2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Ullmannite", "title": "Wikipedia: Ullmannite" } ], "names": [ "Ullmannite" ], "chemicalFormula": "NiSbS", "properties": [ { "scalars": [ { "value": "Sulfide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.EB.25" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.91(2)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Steel-gray-tin white" } ], "name": "Color" }, { "scalars": [ { "value": "Cubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Penetration twins about [110]" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5-5.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "6.65-6.85" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2 3" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P2$_{1}$3" } ], "name": "Space group" }, { "scalars": [ { "value": "Isometric tetartoidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Umangite", "title": "Wikipedia: Umangite" } ], "names": [ "Umangite" ], "chemicalFormula": "Cu$_{3}$Se$_{2}$", "properties": [ { "scalars": [ { "value": "Selenide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.BA.15c" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Red, bluish red-black" } ], "name": "Color" }, { "scalars": [ { "value": "Massive granular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Tetragonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Distinct on [010] and [001]" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Black" } ], "name": "Streak" }, { "scalars": [ { "value": "5.62-6.78" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Uranophane", "title": "Wikipedia: Uranophane" } ], "names": [ "Uranophane" ], "chemicalFormula": "Ca(UO$_{2}$)$_{2}$[HSiO$_{4}$]$_{2}$.5H$_{2}$O", "properties": [ { "scalars": [ { "value": "Uranyl neso-and polysilicates" } ], "name": "Category" }, { "scalars": [ { "value": "09.AK.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "15.85" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "6.98" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.64" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "97.45" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Light yellow, lemon-yellow, honey-yellow, straw-yellow, green-yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Crystals occur as stellate needle aggregates, as fibrous crusts, and massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{100} Perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-pearly, waxy or dull when massive" } ], "name": "Luster" }, { "scalars": [ { "value": "Yellowish white" } ], "name": "Streak" }, { "scalars": [ { "value": "3.81-3.90" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.643" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.666" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.669" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.026" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Weak, X=colorless, Y=pale canary-yellow, Z=canary-yellow" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Weak yellow-green under both short and long UV" } ], "name": "fluorescence" }, { "scalars": [ { "value": "Radioactive" } ], "name": "Other" }, { "scalars": [ { "value": "2" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 2$_{1}$" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic sphenoidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Uvarovite", "title": "Wikipedia: Uvarovite" } ], "names": [ "Uvarovite" ], "chemicalFormula": "Ca$_{3}$Cr$_{2}$Si$_{3}$O$_{12}$", "properties": [ { "scalars": [ { "value": "Nesosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.AD.25" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "11.99" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Green, emerald-green, green-black" } ], "name": "Color" }, { "scalars": [ { "value": "Euhedral crystals, granular, massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Cubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Uneven, conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "6.5-7.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.865" } ], "name": "Refractive index (n)" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.77-3.81" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Fluorescent red in both short and long UV" } ], "name": "Other" }, { "scalars": [ { "value": "4/m$\\bar{3}$2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "I a3d" } ], "name": "Space group" }, { "scalars": [ { "value": "Isometric hexoctahedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Variscite", "title": "Wikipedia: Variscite" } ], "names": [ "Variscite" ], "chemicalFormula": "AlPO$_{4}$.2H$_{2}$O", "properties": [ { "scalars": [ { "value": "Phosphate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.CD.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Green, blue green, yellow green and rarely red" } ], "name": "Color" }, { "scalars": [ { "value": "Encrustations and reniform masses" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic-dipyramidal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "[010] perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal-splintery" } ], "name": "Fracture" }, { "scalars": [ { "value": "4.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-waxy" } ], "name": "Luster" }, { "scalars": [ { "value": "1.563" } ], "name": "Refractive index (n$\\alpha$)" }, { "scalars": [ { "value": "1.588" } ], "name": "Refractive index (n$\\beta$)" }, { "scalars": [ { "value": "1.594" } ], "name": "Refractive index (n$\\gamma$)" }, { "scalars": [ { "value": "0.031" } ], "name": "Birefringence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.57-2.61" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Vivianite", "title": "Wikipedia: Vivianite" } ], "names": [ "Vivianite" ], "chemicalFormula": "Fe$^{2 +}$Fe$^{2 +}$2(PO4)2.8H2O", "properties": [ { "scalars": [ { "value": "Phosphate mineral, Vivianite group" } ], "name": "Category" }, { "scalars": [ { "value": "8.CE.40, 7/C.13-40" } ], "conditions": [ { "scalars": [ { "value": "8 ed" } ], "name": "Note" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "40.3.6.1" } ], "name": "Dana classification" }, { "scalars": [ { "value": "10.086" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "13.441" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "4.703" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "104.27" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "501.61" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "Colorless, very pale green, becoming dark blue, dark greenish blue, indigo-blue, then black with oxidation" } ], "name": "Color" }, { "scalars": [ { "value": "Flattened, elongated prismatic crystals, may be rounded or corroded, as stellate groups, incrustations, concretionary, earthy or powdery" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic prismatic 2/m" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Translation gliding" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {010}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Fibrous" } ], "name": "Fracture" }, { "scalars": [ { "value": "Flexible, sectile" } ], "name": "Tenacity" }, { "scalars": [ { "value": "1.5-2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, pearly on the cleavage, dull when earthy" } ], "name": "Luster" }, { "scalars": [ { "value": "White, altering-dark blue, brown" } ], "name": "Streak" }, { "scalars": [ { "value": "2.68" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.579-1.616" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.602-1.656" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.629-1.675" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.050-0.059" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Visible, X=blue, deep blue, Indigo-blue, Y=pale yellowish green, pale bluish green, yellow-green, Z=pale yellowish green, olive-yellow" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Not fluorescent" } ], "name": "fluorescence" }, { "scalars": [ { "value": "1114" } ], "units": "$^{\\circ}$C", "name": "Melting point" }, { "scalars": [ { "value": "Easily soluble in acids" } ], "name": "Solubility" }, { "scalars": [ { "value": "Monoclinic 2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Benitoite", "title": "Wikipedia: Benitoite" } ], "names": [ "Benitoite" ], "chemicalFormula": "BaTiSi$_{3}$O$_{9}$", "properties": [ { "scalars": [ { "value": "Cyclosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.CA.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "6.641" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "9.7597(10)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Blue, colorless" } ], "name": "Color" }, { "scalars": [ { "value": "Tabular dipyramidal crystals, granular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Hexagonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "On {0001} by rotation" } ], "name": "Twinning" }, { "scalars": [ { "value": "[10$\\bar{1}$1] poor" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "6-6.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.756-1.757" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.802-1.804" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.046" } ], "name": "Birefringence" }, { "scalars": [ { "value": "O=colorless, E=purple, indigo, greenish blue" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.6" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Insoluble: HCl, H$_{2}$SO$_{4}$, Soluble: HF" } ], "name": "Solubility" }, { "scalars": [ { "value": "Blue fluorescence under SW UV, intense blue cathodoluminescence" } ], "name": "Other" }, { "scalars": [ { "value": "Hexagonal $\\bar{6}$ m2 ditrigonal dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Skutterudite", "title": "Wikipedia: Skutterudite" } ], "names": [ "Skutterudite" ], "chemicalFormula": "(Co,Ni,Fe)As$_{3}$", "properties": [ { "scalars": [ { "value": "Arsenide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.EC.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "8.204" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Tin-white-silver-gray, tarnishes gray or iridescent, in polished section, gray, creamy or golden white" } ], "name": "Color" }, { "scalars": [ { "value": "Crystals are cubes, octahedra, dodecahedra, rarely prismatic, in skeletal growth forms, dis-rted aggregates, also massive, granular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Cubic-Diploidal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "On {112} as sixlings and complex shapes" } ], "name": "Twinning" }, { "scalars": [ { "value": "Distinct on {001} and {111}, in traces on {011}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal-uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "5.5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Black" } ], "name": "Streak" }, { "scalars": [ { "value": "6.5" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Isometric 2/m $\\bar{3}$" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Chrysocolla", "title": "Wikipedia: Chrysocolla" } ], "names": [ "Chrysocolla" ], "chemicalFormula": "Cu$_{2-x}$Al$_{x}$(H$_{2-x}$Si$_{2}$O$_{5}$)(OH)$_{4}$.nH$_{2}$O (x<1)", "properties": [ { "scalars": [ { "value": "Silicate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "09.ED.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.7" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8.9" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.7" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "Blue, cyan or blue-green, green" } ], "name": "Color" }, { "scalars": [ { "value": "Massive, nodular, botryoidal" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "none" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Irregular/uneven, sub-conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle-sectile" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2.5-3.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-dull" } ], "name": "Luster" }, { "scalars": [ { "value": "1.575-1.585" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.597" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.598-1.635" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.023-0.050" } ], "name": "Birefringence" }, { "scalars": [ { "value": "white-a blue-green color" } ], "name": "Streak" }, { "scalars": [ { "value": "1.9-2.4" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Forsterite", "title": "Wikipedia: Forsterite" } ], "names": [ "Forsterite" ], "chemicalFormula": "Magnesiumsilicate(Mg$_{2}$SiO$_{4}$)", "properties": [ { "scalars": [ { "value": "Nesosilicates" } ], "name": "Category" }, { "scalars": [ { "value": "09.AC.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "4.7540 b=10.1971 c=5.9806 Z=4" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "Colorless, green, yellow, yellow green, white" } ], "name": "Color" }, { "scalars": [ { "value": "Dipyramidal prisms often tabular, commonly granular or compact massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic Dipyramidal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "On {100}, {011} and {012}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {010} imperfect on {100}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "7" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.636-1.730" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.650-1.739" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.669-1.772" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.033-0.042" } ], "name": "Birefringence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.21-3.33" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1890" } ], "units": "$^{\\circ}$C", "name": "Melting point" }, { "scalars": [ { "value": "Orthorhombic 2/m 2/m 2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Maghemite", "title": "Wikipedia: Maghemite" } ], "names": [ "Maghemite" ], "chemicalFormula": "$\\gamma$-Fe$_{2}$O$_{3}$", "properties": [ { "scalars": [ { "value": "Oxide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "04.BB.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "8.33" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8 or a=8.35 c=24.99" } ], "units": "$\\AA$", "name": "Unit cell (Z)" }, { "scalars": [ { "value": "32 for tetragonal supercell" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Brown, bluish black, brown-yellow in transmitted light, white-bluish gray in reflected light." } ], "name": "Color" }, { "scalars": [ { "value": "Rarely as minute octahedral crystals, or acicular overgrowths, commonly as coatings on or replacements of magnetite, massive." } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Cubic with a tetragonal supercell" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Subconchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Dull" } ], "name": "Luster" }, { "scalars": [ { "value": "Brown" } ], "name": "Streak" }, { "scalars": [ { "value": "4.860" } ], "conditions": [ { "scalars": [ { "value": "calculated" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Strongly magnetic" } ], "name": "Other" }, { "scalars": [ { "value": "2 3" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 2$_{1}$3" } ], "name": "Space group" }, { "scalars": [ { "value": "Isometric tetartoidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Orpiment", "title": "Wikipedia: Orpiment" } ], "names": [ "Orpiment" ], "chemicalFormula": "As$_{2}$S$_{3}$", "properties": [ { "scalars": [ { "value": "Sulfide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.FA.30" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "11.475(5)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "9.577(4)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "4.256(2)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "90.45(5)" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Lemon-yellow-golden or brownish yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Commonly in foliated columnar or fibrous aggregates, may be reniform or botryoidal, also granular or powdery, rarely as prismatic crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic Prismatic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "On {100}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {010}, imperfect on {100}," } ], "name": "Cleavage" }, { "scalars": [ { "value": "Sectile" } ], "name": "Tenacity" }, { "scalars": [ { "value": "1.5-2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Resinous, pearly on cleavage surface" } ], "name": "Luster" }, { "scalars": [ { "value": "Pale lemon-yellow" } ], "name": "Streak" }, { "scalars": [ { "value": "3.49" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.400" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "2.810" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "3.020" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.620" } ], "name": "Birefringence" }, { "scalars": [ { "value": "In reflected light, strong, white-pale gray with reddish tint, in transmitted light, Y=yellow, Z=greenish yellow" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Monoclinic 2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Zinnwaldite", "title": "Wikipedia: Zinnwaldite" } ], "names": [ "Zinnwaldite" ], "chemicalFormula": "KLiFeAl(AlSi$_{3}$)O$_{10}$(OH,F)$_{2}$", "properties": [ { "scalars": [ { "value": "Phyllosilicate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "5.29" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "9.14" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "10.09 : $\\beta$=100.83$^{\\circ}$" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "Gray-brown, yellow-brown, pale violet, dark green, color zoning common" } ], "name": "Color" }, { "scalars": [ { "value": "Well-formed short prismatic or tabular crystals, pseudohexagonal, in rosettes or fan-shaped groups, lamellar or scaly aggregates, disseminated." } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic-Prismatic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "On composition plane {001}, twin axis [310]" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect basal {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Laminae $^{\\circ}$exible, elastic" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3.5-4.0" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Pearly-vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.565-1.625" } ], "name": "Refractive index (n$\\alpha$)" }, { "scalars": [ { "value": "1.605-1.675" } ], "name": "Refractive index (n$\\beta$)" }, { "scalars": [ { "value": "1.605-1.675" } ], "name": "Refractive index (n$\\gamma$)" }, { "scalars": [ { "value": "0.040-0.050" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Distinct, X=colorless-yellow-brown, Y=gray-brown, Z=colorless-gray-brown" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.9-3.1" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "'' 2/m" } ], "name": "Monoclinic ''Point Group" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Jadeite", "title": "Wikipedia: Jadeite" } ], "names": [ "Jadeite" ], "chemicalFormula": "NaAlSi$_{2}$O$_{6}$ or Na(Al,Fe$^{3+}$)Si$_{2}$O$_{6}$", "properties": [ { "scalars": [ { "value": "Pyroxene group" } ], "name": "Category" }, { "scalars": [ { "value": "09.DA.25" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Apple-green, emerald-green, bluish green, leek-green,greenish white, white, may show green spots, rarely blue or violet, colorless in thin section. Often also banded." } ], "name": "Color" }, { "scalars": [ { "value": "Commonly massive, or fibrous, granular, prismatic crystals rare" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Single and lamellar twinning on [100] and [001]" } ], "name": "Twinning" }, { "scalars": [ { "value": "Good on [110]" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Splintery" } ], "name": "Fracture" }, { "scalars": [ { "value": "6.5-7" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Subvitreous, pearly on cleavages" } ], "name": "Luster" }, { "scalars": [ { "value": "vitreous-greasy" } ], "name": "Polish" }, { "scalars": [ { "value": "1.654-1.673" } ], "name": "Refractive index (n$\\alpha$)" }, { "scalars": [ { "value": "1.659-1.679" } ], "name": "Refractive index (n$\\beta$)" }, { "scalars": [ { "value": "1.667-1.693" } ], "name": "Refractive index (n$\\gamma$)" }, { "scalars": [ { "value": "0.013-0.020" } ], "name": "Birefringence" }, { "scalars": [ { "value": "''Dark colors'' are generally inert. ''Light green''-inert-weak white in long wave, generally inert in short wave, ''light yellow''-inert-weak green in long wave, generally inert in short wave, ''white''-inert-weak in long wave, generally inert in short wave, ''light purple''-inert-weak white or weak brownish red in long wave, generally inert in short wave, some ''dyed lavender colors''-moderate-strong orange in long wave, weaker in short wave" } ], "name": "fluorescence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.24-3.43" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Erythrite", "title": "Wikipedia: Erythrite" } ], "names": [ "Erythrite" ], "chemicalFormula": "Co$_{3}$(AsO$_{4}$)$_{2}$.8H$_{2}$O", "properties": [ { "scalars": [ { "value": "Arsenate mineral, Vivianite group" } ], "name": "Category" }, { "scalars": [ { "value": "08.CE.40" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "40.03.06.03" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Crimson-peach-red, pale rose, or pink, may be zoned" } ], "name": "Color" }, { "scalars": [ { "value": "Radial or stellate aggregates, fibrous, drusy, usually powdery and massive-rarely as striated prismatic crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic-Prismatic H-M Symbol (2/m) Space Group: 2/m" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {010}, poor on {100} and {$\\bar{1}$02}." } ], "name": "Cleavage" }, { "scalars": [ { "value": "Sectile" } ], "name": "Tenacity" }, { "scalars": [ { "value": "1.5-2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Subadamantine, pearly on cleavages" } ], "name": "Luster" }, { "scalars": [ { "value": "Pale red-pink" } ], "name": "Streak" }, { "scalars": [ { "value": "3.06" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.626-1.629" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.662-1.663" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.699-1.701" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.073" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Visible: X=pale pinkish-pale rose, Y=pale violet-pale violet-rose, Z=deep red" } ], "name": "Pleochroism" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Nephrite", "title": "Wikipedia: Nephrite" } ], "names": [ "Nephrite" ], "chemicalFormula": "Ca$_{2}$(Mg,Fe)$_{5}$Si$_{8}$O$_{22}$(OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Translucent-opaque and often mottled. Light-dark green, yellow-brown, white, gray, black." } ], "name": "Color" }, { "scalars": [ { "value": "massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "splintery-granular" } ], "name": "Fracture" }, { "scalars": [ { "value": "6-6.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "dull" } ], "name": "Luster" }, { "scalars": [ { "value": "vitreous-greasy" } ], "name": "Polish" }, { "scalars": [ { "value": "1.606-1.632" } ], "name": "Refractive index" }, { "scalars": [ { "value": "usually not detectable" } ], "name": "Birefringence" }, { "scalars": [ { "value": "none" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "inert" } ], "name": "fluorescence" }, { "scalars": [ { "value": "Vague line may be present at 500 nm, but rarely any lines. Rarely, in s-nes of exceptional gem quality, vague lines in the red part of the spectrum may be seen." } ], "name": "absorption" }, { "scalars": [ { "value": "2.95" } ], "conditions": [ { "scalars": [ { "value": "+.15,-.05" } ], "name": "Note" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Albite", "title": "Wikipedia: Albite" } ], "names": [ "Albite" ], "chemicalFormula": "NaAlSi$_{3}$O$_{8}$ or Na$_{1.0-0.9}$Ca$_{0.0-0.1}$Al$_{1.0-1.1}$Si$_{3.0-2.9}$O$_{8}$", "properties": [ { "scalars": [ { "value": "plagioclase, feldspar, tec-silicate" } ], "name": "Category" }, { "scalars": [ { "value": "8.16" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "12.87" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "7.11" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "93.45" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\alpha$)" }, { "scalars": [ { "value": "116.4" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "90.28" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\gamma$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "White-gray, blueish, greenish, reddish, may be cha-yant" } ], "name": "Color" }, { "scalars": [ { "value": "Crystals commonly tabular, divergent aggregates, granular, cleavable massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Triclinic Pinacoidal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Coomon giving polysynthetic striae on {001} or {010}also contact, simple and multiple" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {001}, very good on {010}, imperfect on {110}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven-conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "6-6.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, typically pearly on cleavages" } ], "name": "Luster" }, { "scalars": [ { "value": "1.528-1.533" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.532-1.537" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.538-1.542" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.010" } ], "name": "Birefringence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.60-2.65" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Low-and high-temperature structural modifications are recognized" } ], "name": "Other" }, { "scalars": [ { "value": "$\\bar{1}$" } ], "name": "H-M symbol" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Tremolite", "title": "Wikipedia: Tremolite" } ], "names": [ "Tremolite" ], "chemicalFormula": "$\\Box$$Ca$_{2}$(Mg$_{5.0-4.5}$Fe$^{2+}$_{0.0-0.5}$)Si$_{8}$O$_{22}$(OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Amphiboles" } ], "name": "Category" }, { "scalars": [ { "value": "9.DE.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "9.84" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "18.02" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.27" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "104.95" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "White, gray, lavender-pink, light green, light yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Elongated prismatic, or flattened crystals, also as fibrous, granular or columnar aggregates" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Simple or multiple, common parallel-{100}, rarely parallel-{001}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {110} at 56$^{\\circ}$ and 124$^{\\circ}$, partings on {010} and {100}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous and silky" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.99-3.03" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.599-1.612" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.613-1.626" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.625-1.637" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.026" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Short UV=yellow, Long UV=range pink" } ], "name": "fluorescence" }, { "scalars": [ { "value": "Monoclinic 2/m prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Chabazite", "title": "Wikipedia: Chabazite" } ], "names": [ "Chabazite" ], "chemicalFormula": "(Ca,K$_{2}$,Na$_{2}$)$_{2}$[Al$_{2}$Si$_{4}$O$_{12}$]$_{2}$.12H$_{2}$O.", "properties": [ { "scalars": [ { "value": "Tec-silicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.GD.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Colourless, white, yellow, pink, red" } ], "name": "Color" }, { "scalars": [ { "value": "triclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "distinct/good on {1011}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "irregular/uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "4-5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "white" } ], "name": "Streak" }, { "scalars": [ { "value": "2.05-2.2" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Franklinite", "title": "Wikipedia: Franklinite" } ], "names": [ "Franklinite" ], "chemicalFormula": "ZnFe$_{2}$O$_{4}$", "properties": [ { "scalars": [ { "value": "Oxide minerals, Spinel group, Spinel structural group" } ], "name": "Category" }, { "scalars": [ { "value": "04.BB.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "black" } ], "name": "Color" }, { "scalars": [ { "value": "octahedral" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "isometric/cubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "irregular/uneven, conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "5.5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "metallic, often dull" } ], "name": "Luster" }, { "scalars": [ { "value": "reddish brown-black" } ], "name": "Streak" }, { "scalars": [ { "value": "5.07-5.22" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "HCl soluble" } ], "name": "Solubility" }, { "scalars": [ { "value": "magnetic" } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Diopside", "title": "Wikipedia: Diopside" } ], "names": [ "Diopside" ], "chemicalFormula": "MgCaSi$_{2}$O$_{6}$", "properties": [ { "scalars": [ { "value": "Silicate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "9.746" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8.899" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.251" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "105.79" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Commonly light-dark green, may be blue, brown, colorless, white, grey" } ], "name": "Color" }, { "scalars": [ { "value": "Short prismatic crystals common, may be granular, columnar, massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Simple and multiple twins common on {100} and {001}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Distinct/good on {110}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Irregular/uneven, conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5.5-6.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-dull" } ], "name": "Luster" }, { "scalars": [ { "value": "1.663-1.699" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.671-1.705" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.693-1.728" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.030" } ], "name": "Birefringence" }, { "scalars": [ { "value": "white" } ], "name": "Streak" }, { "scalars": [ { "value": "3.278" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1391" } ], "units": "$^{\\circ}$C", "name": "Melting point" }, { "scalars": [ { "value": "Monoclinic 2/m-prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Covellite", "title": "Wikipedia: Covellite" } ], "names": [ "Covellite" ], "chemicalFormula": "coppersulfideCuS", "properties": [ { "scalars": [ { "value": "Sulfide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.CA.05a" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "02.08.12.01" } ], "name": "Dana classification" }, { "scalars": [ { "value": "3.7938" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "16.341" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "6" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Indigo-blue or darker, commonly highly iridescent, brass-yellow-deep red" } ], "name": "Color" }, { "scalars": [ { "value": "Thin platy hexagonal crystals and rosettes also massive-granular." } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Hexagonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {0001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Flexible" } ], "name": "Tenacity" }, { "scalars": [ { "value": "1.5-2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Submetallic, inclining-resinous-dull" } ], "name": "Luster" }, { "scalars": [ { "value": "1.450" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "2.620" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "Marked, deep blue-pale blue" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Lead gray" } ], "name": "Streak" }, { "scalars": [ { "value": "4.6-4.8" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.5" } ], "name": "Fusibility" }, { "scalars": [ { "value": "Micaceous cleavage" } ], "name": "Other" }, { "scalars": [ { "value": "P 6$_{3}$}$/mmc" } ], "name": "Hexagonal dihexagonal dipyramidal H-M Symbol (6/m 2/m 2/m) Space group" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Torbernite", "title": "Wikipedia: Torbernite" } ], "names": [ "Torbernite" ], "chemicalFormula": "Cu(UO$_{2}$)$_{2}$(PO$_{4}$)$_{2}$.(8-12)H$_2$O", "properties": [ { "scalars": [ { "value": "Phosphate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "641-713" } ], "units": "depending the degree of water loss", "name": "Molecular weight" }, { "scalars": [ { "value": "08.EB.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Emerald green-apple green" } ], "name": "Color" }, { "scalars": [ { "value": "Tabular crystals, Foliated-earthy masses and encrustations" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Tetragonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Rare on [110]" } ], "name": "Twinning" }, { "scalars": [ { "value": "[001] Perfect, [100] Distinct" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Fracture" }, { "scalars": [ { "value": "2-2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, Pearly" } ], "name": "Luster" }, { "scalars": [ { "value": "1.590-1.592" } ], "name": "Refractive index (n$\\omega$)" }, { "scalars": [ { "value": "1.581-1.582" } ], "name": "Refractive index (n$\\epsilon$)" }, { "scalars": [ { "value": "0.009-0.010" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Visible" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Pale green" } ], "name": "Streak" }, { "scalars": [ { "value": "3.2" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Decompose" } ], "units": "before", "name": "Melting point" }, { "scalars": [ { "value": "Decompose before" } ], "name": "Fusibility" }, { "scalars": [ { "value": "25px Radioactive" } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Arcanite", "title": "Wikipedia: Arcanite" } ], "names": [ "Arcanite" ], "chemicalFormula": "K$_{2}$SO$_{4}$", "properties": [ { "scalars": [ { "value": "Sulfate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "07.AD.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.77" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "10.07" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "7.48" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "White-colorless, yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Tabular crystals, typically in crusts and coatings" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Cyclic on {110}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Good on {010} and {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.66" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.494" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.495" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.497" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.004" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Orthorhombic dipyramidal (2/m 2/m 2/m)" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Boehmite", "title": "Wikipedia: Boehmite" } ], "names": [ "Boehmite" ], "chemicalFormula": "$\\gamma$-AlO(OH)", "properties": [ { "scalars": [ { "value": "Oxide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "04.FE.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "6.1.2.1" } ], "name": "Dana classification" }, { "scalars": [ { "value": "3.693" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "12.221" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "2.865" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "White, pale greyish brown, yellowish or reddish when impure, colorless in thin section" } ], "name": "Color" }, { "scalars": [ { "value": "Tabular crystal rare, fine grained in pisolitic aggregates or disseminated" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic dipyramidal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Very good on {010}, good on {100}, and poor on {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, pearly on {010}" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.02-3.05" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.644-1.648" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.654-1.657" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.661-1.668" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.017-0.020" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Orthorhombic 2/m 2/m 2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Bromargyrite", "title": "Wikipedia: Bromargyrite" } ], "names": [ "Bromargyrite" ], "chemicalFormula": "AgBr", "properties": [ { "scalars": [ { "value": "Halide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "03.AA.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.7745" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "Yellowish, greenish brown, bright green" } ], "name": "Color" }, { "scalars": [ { "value": "Isometric" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None observed" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Irregular/uneven, sub-conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Sectile" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine, resinous, waxy" } ], "name": "Luster" }, { "scalars": [ { "value": "White-yellowish white" } ], "name": "Streak" }, { "scalars": [ { "value": "6.474" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.253" } ], "name": "Refractive index (n)" }, { "scalars": [ { "value": "0.000" } ], "name": "Birefringence" }, { "scalars": [ { "value": "m3m (4/m $\\bar{3}$ 2/m)-Hexoctahedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Euclase", "title": "Wikipedia: Euclase" } ], "names": [ "Euclase" ], "chemicalFormula": "BeAlSiO$_{4}$(OH)", "properties": [ { "scalars": [ { "value": "Nesosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.AE.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "4.763" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "14.29" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "4.618" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "100.25" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless, white, pale green-deep yellowish green, greenish blue, pale blue-deep blue" } ], "name": "Color" }, { "scalars": [ { "value": "Prismatic crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect, perfect on {010}, imperfect on {110} {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "7.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.99-3.1" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.652" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.655" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.671" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.019" } ], "name": "Birefringence" }, { "scalars": [ { "value": "May be marked in shades of deep blue" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 2$_{1}$/a" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Thermonatrite", "title": "Wikipedia: Thermonatrite" } ], "names": [ "Thermonatrite" ], "chemicalFormula": "Na$_{2}$CO$_{3}$.H$_{2}$O", "properties": [ { "scalars": [ { "value": "Carbonate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "05.CB.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "10.72" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.24" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.46" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Acicular crystals rare, typically occurs as powdery crusts" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Poor-indistinct on {100}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Sectile" } ], "name": "Fracture" }, { "scalars": [ { "value": "1-1.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "2.255" } ], "conditions": [ { "scalars": [ { "value": "measured on synthetic crystal" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.420" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.506" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.524" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.104" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Soluble in water" } ], "name": "Solubility" }, { "scalars": [ { "value": "Readily dehydrates" } ], "name": "Other" }, { "scalars": [ { "value": "mm2" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P ca2$_{1}$" } ], "name": "Space group" }, { "scalars": [ { "value": "Orthorhombic pyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Aphthitalite", "title": "Wikipedia: Aphthitalite" } ], "names": [ "Aphthitalite" ], "chemicalFormula": "(K,Na)$_{3}$Na(SO$_{4}$)$_{2}$", "properties": [ { "scalars": [ { "value": "Sulfate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "07.AC.35" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.67" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "7.33 Z=1" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "White, colorless, gray, blue, green due-inclusions and impurities" } ], "name": "Color" }, { "scalars": [ { "value": "Tabular crystals , as bladed aggregates and in crusts" } ], "conditions": [ { "scalars": [ { "value": "with dis-rted pseudo-orthorhombic habit" } ], "name": "Note" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "On {0001} or repeated on {11$\\bar{2}$0}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Fair on {10$\\bar{1}$0}, poor on {0001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal-uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-resinous" } ], "name": "Luster" }, { "scalars": [ { "value": "2.66-2.71" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.487-1.491" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.492-1.499" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.005" } ], "name": "Birefringence" }, { "scalars": [ { "value": "In water" } ], "name": "Solubility" }, { "scalars": [ { "value": "Trigonal hexagonal scalenohedral ($\\bar{3}$ 2/m)" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Pyrrhotite", "title": "Wikipedia: Pyrrhotite" } ], "names": [ "Pyrrhotite" ], "chemicalFormula": "Fe$_{1-x}$S (x = 0 to 0.2)", "properties": [ { "scalars": [ { "value": "02.CC.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "11.88" } ], "units": "$\\AA$", "name": "Unit cell ()" }, { "scalars": [ { "value": "6.87" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "22.79" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "90.47 Z=26" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "Bronze, dark brown" } ], "name": "Color" }, { "scalars": [ { "value": "Tabular or prismatic in hexagonal prisms, massive-granular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic, with hexagonal polytypes" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Absent" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "3.5-4.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Opaque" } ], "name": "Refractive index" }, { "scalars": [ { "value": "Dark grey-black" } ], "name": "Streak" }, { "scalars": [ { "value": "4.58-4.65" }, { "value": "" } ], "conditions": [ { "scalars": [ { "value": "average=4.61" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "3" } ], "name": "Fusibility" }, { "scalars": [ { "value": "Soluble in hydrochloric acid" } ], "name": "Solubility" }, { "scalars": [ { "value": "Weakly magnetic, strongly magnetic on heating, non-luminescent, non-radioactive" } ], "name": "Other" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "A2/a" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Marcasite", "title": "Wikipedia: Marcasite" } ], "names": [ "Marcasite" ], "chemicalFormula": "FeS$_{2}$", "properties": [ { "scalars": [ { "value": "Sulfide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.EB.10a" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "4.436" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.414" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "3.381" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Tin-white on fresh surface, pale bronze-yellow, darkening on exposure, iridescent tarnish" } ], "name": "Color" }, { "scalars": [ { "value": "Crystals typically tabular on {010}, curved faces common, stalactitic," } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic, Pnnm" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Common and repeated on {101}, less common on {011}." } ], "name": "Twinning" }, { "scalars": [ { "value": "Cleavage: {101}, rather distinct, {110} in traces" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Irregular/Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "6-6.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "[100] creamy white, [010] light yellowish white, [001] white with rose-brown tint. Anisotropism: Very strong, yellow through pale green-dark green" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Dark-grey-black." } ], "name": "Streak" }, { "scalars": [ { "value": "4.875" }, { "value": "4.887" } ], "conditions": [ { "scalars": [ { "value": "calculated" }, { "value": "measured" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Orthorhombic 2/m 2/m 2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Thorite", "title": "Wikipedia: Thorite" } ], "names": [ "Thorite" ], "chemicalFormula": "(Th,U)SiO$_{4}$", "properties": [ { "scalars": [ { "value": "Silicate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "7.13" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "6.32" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Yellow-orange, brownish yellow, brownish black, black" } ], "name": "Color" }, { "scalars": [ { "value": "In square prisms, or pseudo-octahedral crystals, also massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Tetrahedral" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Distinct on {110}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "4.5-5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-resinous" } ], "name": "Luster" }, { "scalars": [ { "value": "Light orange-dark brown" } ], "name": "Streak" }, { "scalars": [ { "value": "6.63-7.20" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.790-1.840" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.780-1.820" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.010-0.020" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Radioactive" } ], "name": "Other" }, { "scalars": [ { "value": "Tetragonal-ditetragonal dipyramidal (4/m 2/m 2/m)" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Ankerite", "title": "Wikipedia: Ankerite" } ], "names": [ "Ankerite" ], "chemicalFormula": "Ca(Fe,Mg,Mn)(CO$_{3}$)$_{2}$", "properties": [ { "scalars": [ { "value": "Carbonate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "05.AB.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "4.8312(2)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "16.1663(3)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "3" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Brown, yellow, white" } ], "name": "Color" }, { "scalars": [ { "value": "Chrystals rhombohedral with curved faces, columnar, stalactitic, granular, massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Simple twins on {0001}, {10$\\bar{1}$0}. {11$\\bar{2}$0}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {10$\\bar{1}$1}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Subconchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3.5-4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-pearly" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.93-3.10" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.690-1.750" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.510-1.548" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.180-0.202" } ], "name": "Birefringence" }, { "scalars": [ { "value": "$\\bar{3}$" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "R$\\bar{3}$" } ], "name": "Space group" }, { "scalars": [ { "value": "Trigonal rhombohedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Wurtzite", "title": "Wikipedia: Wurtzite" } ], "names": [ "Wurtzite" ], "chemicalFormula": "(Zn,Fe)S", "properties": [ { "scalars": [ { "value": "Sulfide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.CB.45" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "02.08.07.01" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Brownish black, Orange brown, Reddish brown, Black." } ], "name": "Color" }, { "scalars": [ { "value": "Radial clusters and colloform crusts and masses. Also as tabular crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Hexagonal dihexagonal pyramidal H-M symbol (6mm) Space group: P6$_{3}$mc" } ], "name": "Crystal system" }, { "scalars": [ { "value": "[11$\\bar{2}$0] and [0001]" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven-irregular" } ], "name": "Fracture" }, { "scalars": [ { "value": "3.5-4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Resinous, brilliant submetallic on crystal faces" } ], "name": "Luster" }, { "scalars": [ { "value": "2.356" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "2.378" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.022" } ], "name": "Birefringence" }, { "scalars": [ { "value": "light brown" } ], "name": "Streak" }, { "scalars": [ { "value": "4.09" }, { "value": "4.10" } ], "conditions": [ { "scalars": [ { "value": "measured" }, { "value": "calculated" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Nonmagnetic, non-radioactive" } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Thenardite", "title": "Wikipedia: Thenardite" } ], "names": [ "Thenardite" ], "chemicalFormula": "Na$_{2}$SO$_{4}$", "properties": [ { "scalars": [ { "value": "Sulfate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "07.AC.25" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.86" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "12.3" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "9.82" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "White, grayish white, yellowish white, reddish white, brownish white" } ], "name": "Color" }, { "scalars": [ { "value": "Forms crust-like prismatic aggregates on matrix" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Interpenetration twinning on {001}, also on {100}" } ], "name": "Twinning" }, { "scalars": [ { "value": "{010} Perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Splintery" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-resinous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.471" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.477" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.484" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.013" } ], "name": "Birefringence" }, { "scalars": [ { "value": "none" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.67-2.7" }, { "value": "" } ], "conditions": [ { "scalars": [ { "value": "average=2.68" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Soluble in water" } ], "name": "Solubility" }, { "scalars": [ { "value": "Salty taste" } ], "name": "Other" }, { "scalars": [ { "value": "Fluorescent and phosphorescent: short UV=bright white, long UV=bright white" } ], "name": "fluorescence" }, { "scalars": [ { "value": "2/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "F ddd" } ], "name": "Space group" }, { "scalars": [ { "value": "Orthorhombic dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Sellaite", "title": "Wikipedia: Sellaite" } ], "names": [ "Sellaite" ], "chemicalFormula": "MgF$_{2}$", "properties": [ { "scalars": [ { "value": "Halide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "3.AB.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "4.6213(2)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "3.0519(1)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless-white" } ], "name": "Color" }, { "scalars": [ { "value": "Prismatic crystals, fibrous, radial, spherulitic" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Tetragonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "On {011}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {010} and {110}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5-5.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "3.15" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.378" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.390" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.012" } ], "name": "Birefringence" }, { "scalars": [ { "value": "ditetragonal dipyramidal" } ], "name": "Symmetry" }, { "scalars": [ { "value": "4/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 4$_{1}$/mnm" } ], "name": "Space group" }, { "scalars": [ { "value": "Tetragonal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Mirabilite", "title": "Wikipedia: Mirabilite" } ], "names": [ "Mirabilite" ], "chemicalFormula": "Na$_{2}$SO$_{4}$.10H$_{2}$O", "properties": [ { "scalars": [ { "value": "Sulfate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "07.CD.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Colorless, white, yellowish-white, greenish-white" } ], "name": "Color" }, { "scalars": [ { "value": "Granular or well-formed coarse crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic-prismatic 2/m, Space group P2$_{1}$/a" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Interpenetration twinning on {001}, also on {100}" } ], "name": "Twinning" }, { "scalars": [ { "value": "{100} perfect, {001} poor, {010} poor" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "1.5-2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.396" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.4103" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.419" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.023" } ], "name": "Birefringence" }, { "scalars": [ { "value": "none" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "1.49" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Not radioactive, non-fluorescent" } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Wardite", "title": "Wikipedia: Wardite" } ], "names": [ "Wardite" ], "chemicalFormula": "NaAl$_{3}$(PO$_{4}$)$_{2}$(OH)$_{4}$.2(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Phosphate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.DL.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "7.03(1)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "19.04(1)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "White, colorless, pale green, blue-green, yellow-green, pale yellow, yellow pink." } ], "name": "Color" }, { "scalars": [ { "value": "Dipyramidal pseudo-octahedral crystals, striated, radial, fibrous, encrustations" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Tetragonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "2.81-2.87" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.586-1.594" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.595-1.604" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.009" } ], "name": "Birefringence" }, { "scalars": [ { "value": "4 2 2" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 4$_{1}$2$_{1}$2" } ], "name": "Space group" }, { "scalars": [ { "value": "Tetragonal trapezohedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Bukovskyite", "title": "Wikipedia: Bukovskyite" } ], "names": [ "Bukovskyite" ], "chemicalFormula": "Fe$_{2}$(AsO$_{4}$)(SO$_{4}$)(OH).7H$_{2}$O", "properties": [ { "scalars": [ { "value": "Arsenate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.DB.40" } ], "name": "Strunz classification" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Brazilianite", "title": "Wikipedia: Brazilianite" } ], "names": [ "Brazilianite" ], "chemicalFormula": "NaAl$_{3}$(PO$_{4}$)$_{2}$(OH)$_{4}$", "properties": [ { "scalars": [ { "value": "Phosphate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.BK.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "11.229" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "10.142" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "7.098" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "97.4" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Yellow, green, colorless" } ], "name": "Color" }, { "scalars": [ { "value": "Prismatic crystals, may be radially-fibrous or globular druses" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "(010) Distinct-good" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "5.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.602" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.609" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.621-1.623" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.019-0.021" } ], "name": "Birefringence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.98" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P21/n" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Cyanotrichite", "title": "Wikipedia: Cyanotrichite" } ], "names": [ "Cyanotrichite" ], "chemicalFormula": "Cu$_{4}$Al$_{2}$[(OH)$_{12}$SO$_{4}$].2H$_{2}$O", "properties": [ { "scalars": [ { "value": "Sulfate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "07.DE.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "10.16" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "12.61" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "2.9" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "1" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Sky-blue, azure-blue" } ], "name": "Color" }, { "scalars": [ { "value": "Acicular crystals and fibrous aggregates, incrustations" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "1-3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Silky" } ], "name": "Luster" }, { "scalars": [ { "value": "Light blue" } ], "name": "Streak" }, { "scalars": [ { "value": "2.76" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.588" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.617" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.655" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.067" } ], "name": "Birefringence" }, { "scalars": [ { "value": "X=colorless, Y=pale blue, Z=bright blue" } ], "name": "Pleochroism" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Valentinite", "title": "Wikipedia: Valentinite" } ], "names": [ "Valentinite" ], "chemicalFormula": "Sb$_{2}$O$_{3}$", "properties": [ { "scalars": [ { "value": "Oxide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "04.CB.55" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "4.91" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "12.46" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.42" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless, snow-white, pale yellow, pink, gray-brownish" } ], "name": "Color" }, { "scalars": [ { "value": "Prismatic crystals, sometimes flattened, fan-shaped or stellate aggregates of crystals, lamellar, columnar, granular, massive." } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{110}, perfect, {010}, imperfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2.5-3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine, pearly on cleavages" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "5.76" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.180" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "2.350" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "2.350" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.170" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Orthorhombic (2/m 2/m 2/m) dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Vaterite", "title": "Wikipedia: Vaterite" } ], "names": [ "Vaterite" ], "chemicalFormula": "CaCO$_{3}$", "properties": [ { "scalars": [ { "value": "Carbonate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "05.AB.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "4.13" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8.49" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "6" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless" } ], "name": "Color" }, { "scalars": [ { "value": "Fine fibrous crystals, typically less than 0.1 mm, in spherulitic aggregates." } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Hexagonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Irregular-uneven, splintery" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Sub-vitreous, waxy" } ], "name": "Luster" }, { "scalars": [ { "value": "2.54" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.550" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.650" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.100" } ], "name": "Birefringence" }, { "scalars": [ { "value": "6/mmm 6/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P63/mmc {P63/m 2/m 2/c}" } ], "name": "Space group" }, { "scalars": [ { "value": "Hexagonal dihexagonal dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Cordierite", "title": "Wikipedia: Cordierite" } ], "names": [ "Cordierite" ], "chemicalFormula": "(Mg,Fe)$_{2}$Al4Si5O18", "properties": [ { "scalars": [ { "value": "Silicate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "09.CJ.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "61.02.01.01 Cordierite group" } ], "name": "Dana classification" }, { "scalars": [ { "value": "17.079" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "9.730" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "9.356" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Blue, smoky blue, bluish violet, greenish, yellowish brown, gray, colorless-very pale blue in thin section" } ], "name": "Color" }, { "scalars": [ { "value": "Pseudo-hexagonal prismatic twins, as imbedded grains, and massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic-Dipyramidal Space Group: C ccm" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Common on {110}, {130}, simple, lamellar, cyclical" } ], "name": "Twinning" }, { "scalars": [ { "value": "Fair on {100}, poor on {001} and {010}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Subconchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "7-7.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Greasy or vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.527-1.560" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.532-1.574" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.538-1.578" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "Indices" } ], "name": "Refractive index" }, { "scalars": [ { "value": "increase" } ], "name": "Refractive index" }, { "scalars": [ { "value": "with" } ], "name": "Refractive index" }, { "scalars": [ { "value": "Fe" } ], "name": "Refractive index" }, { "scalars": [ { "value": "content." } ], "name": "Refractive index" }, { "scalars": [ { "value": "X=pale yellow, green, Y=violet, blue-violet, Z=pale blue" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.57-2.66" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "on thin edges" } ], "name": "Fusibility" }, { "scalars": [ { "value": "2/m 2/m 2/m Orthorhombic-Dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Almandine", "title": "Wikipedia: Almandine" } ], "names": [ "Almandine" ], "chemicalFormula": "Fe$^{2+}$$_{3}$Al$_{2}$Si$_{3}$O$_{12}$", "properties": [ { "scalars": [ { "value": "Nesosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.AD.25" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "reddish orange-red, slightly purplish red-reddish purple and usually dark in-ne" } ], "name": "Color" }, { "scalars": [ { "value": "none" } ], "name": "Cleavage" }, { "scalars": [ { "value": "conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "7-7.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "greasy-vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "vitreous-subadamantine" } ], "name": "Polish" }, { "scalars": [ { "value": "1.790" } ], "name": "Refractive index" }, { "scalars": [ { "value": "none" } ], "name": "Birefringence" }, { "scalars": [ { "value": "none" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "inert" } ], "name": "fluorescence" }, { "scalars": [ { "value": "usually at 504, 520, and 573nm, may also have faint lines at 423, 460, 610 and 680-690nm" } ], "name": "absorption" }, { "scalars": [ { "value": "white" } ], "name": "Streak" }, { "scalars": [ { "value": "4.05" } ], "conditions": [ { "scalars": [ { "value": "+.25,-.12" } ], "name": "Note" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Scapolite", "title": "Wikipedia: Scapolite" } ], "names": [ "Scapolite" ], "chemicalFormula": "Fe$^{2+}$$_{3}$Al$_{2}$Si$_{3}$O$_{12}$", "properties": [ { "scalars": [ { "value": "Tec-silicates" } ], "name": "Category" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Boracite", "title": "Wikipedia: Boracite" } ], "names": [ "Boracite" ], "chemicalFormula": "Mg$_{3}$B$_{7}$O$_{13}$Cl", "properties": [ { "scalars": [ { "value": "Tek-borates" } ], "name": "Category" }, { "scalars": [ { "value": "06.GA.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "25.06.01.01" } ], "name": "Dana classification" }, { "scalars": [ { "value": "8.577(6)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8.553(8)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "12.09(1)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "392.03" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "Colorless, white, gray, brown, orange, yellow, pale green, dark green, blue-green, or blue, colorless in transmitted light" } ], "name": "Color" }, { "scalars": [ { "value": "Crystalline, disseminated" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic-pyramidal, pseudocubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Rarely as penetration twins" } ], "name": "Twinning" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Irregular/uneven, conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "7-7.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-adamantine" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.95" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.91-3.10" } ], "name": "Density" }, { "scalars": [ { "value": "1.658-1.662" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.662-1.667" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.668-1.673" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.010-0.011" } ], "name": "Birefringence" }, { "scalars": [ { "value": "None" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "None" } ], "name": "fluorescence" }, { "scalars": [ { "value": "Very slowly soluble in H$_{2}$O, Slowly but completely soluble in HCl" } ], "name": "Solubility" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Enstatite", "title": "Wikipedia: Enstatite" } ], "names": [ "Enstatite" ], "chemicalFormula": "MgSiO$_{3}$", "properties": [ { "scalars": [ { "value": "Inosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.DA.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "18.23" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8.84" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.19" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "White, grey, green, yellow or brown-colorless in thin section." } ], "name": "Color" }, { "scalars": [ { "value": "Prismatic crystals, commonly lamellar, fibrous, or massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Simple and lamellar on [100]" } ], "name": "Twinning" }, { "scalars": [ { "value": "Good/distinct on [210]" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, pearly on cleavage" } ], "name": "Luster" }, { "scalars": [ { "value": "1.650-1.668" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.652-1.673" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.659-1.679" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.009-0.011" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Pale green-pale orange" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Gray" } ], "name": "Streak" }, { "scalars": [ { "value": "3.2-3.3" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P bca" } ], "name": "Space group" }, { "scalars": [ { "value": "Orthorhombic dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Hypersthene", "title": "Wikipedia: Hypersthene" } ], "names": [ "Hypersthene" ], "chemicalFormula": "(Mg,Fe)SiO$_{3}$", "properties": [ { "scalars": [ { "value": "gray, brown, or green" } ], "name": "Color" }, { "scalars": [ { "value": "orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "vitreous-pearly" } ], "name": "Luster" }, { "scalars": [ { "value": "3.4-3.9" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Pyromorphite", "title": "Wikipedia: Pyromorphite" } ], "names": [ "Pyromorphite" ], "chemicalFormula": "Pb$_{5}$(PO$_{4}$)$_{3}$Cl", "properties": [ { "scalars": [ { "value": "Phosphate mineral, Apatite group" } ], "name": "Category" }, { "scalars": [ { "value": "08.BN.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Dark grass-green, green, yellow, yellow-orange, reddish orange, yellow-brown, brown, tan, grayish, may be colorless" } ], "name": "Color" }, { "scalars": [ { "value": "Prismatic-acicular crysals, globular-reniform" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Hexagonal-Dipyramidal H-M Symbol (6/m) Space Group: P 6$_{3}$/m" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Rarely on {11$\\bar{2}$2}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Imperfect-[10$\\bar{1}$1]" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven-sub-conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3.5-4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Resinous-subadamantine" } ], "name": "Luster" }, { "scalars": [ { "value": "2.058" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "2.048" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.010" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Weak" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "May fluoresce yellow-orange under LW and SW UV" } ], "name": "fluorescence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "7.04" }, { "value": "7.14" } ], "conditions": [ { "scalars": [ { "value": "measured" }, { "value": "calculated" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Piezoelectric if biaxial" } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Manganite", "title": "Wikipedia: Manganite" } ], "names": [ "Manganite" ], "chemicalFormula": "MnO(OH)", "properties": [ { "scalars": [ { "value": "Oxide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "04.FD.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "06.01.03.01" } ], "name": "Dana classification" }, { "scalars": [ { "value": "8.94" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.28" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.74" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "90" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Dark steel-gray-black, reddish brown in transmitted light, gray-white with brownish tint, with blood-red internal reflections in reflected light" } ], "name": "Color" }, { "scalars": [ { "value": "Slender prismatic crystals, massive-fibrous" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic, pseudo-orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Contact and penetration twins on {011}" } ], "name": "Twinning" }, { "scalars": [ { "value": "{010} perfect, {110} and {001} good" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Sub-metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Reddish brown-nearly black" } ], "name": "Streak" }, { "scalars": [ { "value": "4.29-4.34" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.250(2)" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "2.250(2)" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "2.530(2)" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.280, Bireflectance: distinct in grays" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Faint" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Monoclinic 2/m prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Alunite", "title": "Wikipedia: Alunite" } ], "names": [ "Alunite" ], "chemicalFormula": "KAl$_{3}$(SO$_{4}$)$_{2}$(OH)$_{6}$", "properties": [ { "scalars": [ { "value": "Sulfate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "07.BC.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "6.98" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "17.32" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "3" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Yellow, red,-reddish brown, colorless if pure, may be white, pale shades of gray," } ], "name": "Color" }, { "scalars": [ { "value": "fibrous-columnar, porcelaneous, commonly granular-dense massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "On {0001}, perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3.5-4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, somewhat pearly on {0001} for crystals, earthy if massive" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.6-2.9" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.572" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.592" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.020" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Strongly pyroelectric" } ], "name": "Other" }, { "scalars": [ { "value": "Trigonal 3m or $\\bar{3}$2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Rhodonite", "title": "Wikipedia: Rhodonite" } ], "names": [ "Rhodonite" ], "chemicalFormula": "(Mn$^{2+}$,Fe$^{2+}$,Mg,Ca)SiO$_{3}$", "properties": [ { "scalars": [ { "value": "Inosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.DK.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "65.04.01.01" } ], "name": "Dana classification" }, { "scalars": [ { "value": "9.758" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "10.499" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "12.205" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "108.58" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\alpha$)" }, { "scalars": [ { "value": "102.92" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "82.52" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\gamma$)" }, { "scalars": [ { "value": "20" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Rose-pink-brownish red, gray, or yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Tabular crystals, massive, granular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Triclinic-Pinacoidal H-M Symbol ($\\bar{1}$) Space Group: P$\\bar{1}$" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Lamellar, composition plane {010}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {110} and {1$\\bar{1}$0}, (110) ^ (1$\\bar{1}$0)=92.5$^{\\circ}$, good on {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal-uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "5.5-6.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-pearly" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.57-3.76" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.711-1.738" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.714-1.741" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.724-1.751" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.013" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Weak" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Triclinic $\\bar{1}$ pinacoidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Phenakite", "title": "Wikipedia: Phenakite" } ], "names": [ "Phenakite" ], "chemicalFormula": "Be$_{2}$SiO$_{4}$", "properties": [ { "scalars": [ { "value": "Nesosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.AA.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "12.438" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8.231" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "18" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless, yellow, pink, brown" } ], "name": "Color" }, { "scalars": [ { "value": "Tabular, prismatic-acicular crystals often as columnar aggregates, as spherulites and granular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Penetration twins around {0001}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Distinct on {11$\\bar{2}$0}, imperfect on {10$\\bar{1}$1}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "7.5-8" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "2.93-3.00" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.650-1.656" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.667-1.670" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.017" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Bright blue cathodoluminescence" } ], "name": "Other" }, { "scalars": [ { "value": "Trigonal $\\bar{3}$ rhombohedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Natrolite", "title": "Wikipedia: Natrolite" } ], "names": [ "Natrolite" ], "chemicalFormula": "Na$_{2}$Al$_{2}$Si$_{3}$O$_{10}$.2H$_{2}$O", "properties": [ { "scalars": [ { "value": "Tec-silicate" } ], "name": "Category" }, { "scalars": [ { "value": "8/J.21-10 or 09.GA.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "77.01.05.01" } ], "name": "Dana classification" }, { "scalars": [ { "value": "18.27" } ], "name": "Unit cell (a)" }, { "scalars": [ { "value": "18.587" } ], "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.56" } ], "name": "Unit cell (c)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "380.22" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "White, colorless" } ], "name": "Color" }, { "scalars": [ { "value": "Acicular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "On {110}, {011}, {031}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {110}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Irregular, uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, Silky, Pearly" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.25" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Scolecite", "title": "Wikipedia: Scolecite" } ], "names": [ "Scolecite" ], "chemicalFormula": "CaAl$_{2}$Si$_{3}$O$_{10}$.3H$_{2}$O", "properties": [ { "scalars": [ { "value": "Zeolites" } ], "name": "Category" }, { "scalars": [ { "value": "392.34" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "8/J.21-60 or ID: 9.GA.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "77.1.5.5" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Colorless white, pink, salmon, red or green" } ], "name": "Color" }, { "scalars": [ { "value": "Thin prismatic needles, radiating groups and fibrous masses" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic m Space group Cc" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Common on {100}, twin axis [001], rare on {001} and {110}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {110} and {1$\\bar{1}$0}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Irregular/uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5-5.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, silky when fibrous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.507-1.513" } ], "name": "Refractive index (N$_{x}$)" }, { "scalars": [ { "value": "1.516-1.520" } ], "name": "Refractive index (N$_{y}$)" }, { "scalars": [ { "value": "1.517-1.521" } ], "name": "Refractive index (N$_{z}$)" }, { "scalars": [ { "value": "X: colourless Y: colourless Z: colourless http://www.webmineral.com/data/Scolecite.shtml" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.16-2.40" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Soluble in common acids." } ], "name": "Solubility" }, { "scalars": [ { "value": "Pyroelectric and piezoelectric, sometimes fluorescent yellow-brown in LW and SW UV. Not radioactive." } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Pezzottaite", "title": "Wikipedia: Pezzottaite" } ], "names": [ "Pezzottaite" ], "chemicalFormula": "Cs(Be$_{2}$Li)Al$_{2}$Si$_{6}$O$_{18}$", "properties": [ { "scalars": [ { "value": "Raspberry red, orange-red, pink" } ], "name": "Color" }, { "scalars": [ { "value": "flattened, tabular, equant, aggregate" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Imperfect, basal" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal-uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "8" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.601-1.620" } ], "name": "Refractive index" }, { "scalars": [ { "value": "-0.008-0.011" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Moderate dichroic" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.10" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Moolooite", "title": "Wikipedia: Moolooite" } ], "names": [ "Moolooite" ], "chemicalFormula": "Cu(C$_{2}$O$_{4}$).0.4H$_{2}$O", "properties": [ { "scalars": [ { "value": "Oxalate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "10.AB.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Mimetite", "title": "Wikipedia: Mimetite" } ], "names": [ "Mimetite" ], "chemicalFormula": "Pb$_{5}$(AsO$_{4}$)$_{3}$Cl", "properties": [ { "scalars": [ { "value": "Arsenate minerals, Apatite group" } ], "name": "Category" }, { "scalars": [ { "value": "08.BN.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "10.250(2)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "7.454(1)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Pale-bright yellow, yellowish brown, yellow-orange, white, may be colorless" } ], "name": "Color" }, { "scalars": [ { "value": "Prismatic-acicular crystals, reniform, botryoidal, globular," } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Hexagonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Rare on {11$\\bar{2}$2}" } ], "name": "Twinning" }, { "scalars": [ { "value": "[10$\\bar{1}$1] Imperfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle, conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3.5-4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Resinous, subadamantine" } ], "name": "Luster" }, { "scalars": [ { "value": "2.147" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "2.128" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.019" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Weak" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "7.1-7.24" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "6/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P6$_{3}$/m" } ], "name": "Space group" }, { "scalars": [ { "value": "Hexagonal dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Clintonite", "title": "Wikipedia: Clintonite" } ], "names": [ "Clintonite" ], "chemicalFormula": "Ca(Mg,Al)$_{3}$(Al$_{3}$Si)O$_{10}$(OH)$_{2}$", "properties": [ { "scalars": [ { "value": "PhyllosilicateMica group" } ], "name": "Category" }, { "scalars": [ { "value": "5.204" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "9.026" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "9.812" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "100.35" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless, yellow, orange, red-brown, brown, green" } ], "name": "Color" }, { "scalars": [ { "value": "Tabular pseudohexagonal crystals, foliated or lamellar radiated, massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Spiral polysynthetic twinning" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3.5 on {001}, 6 at angle-{001}" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, pearly, submetallic" } ], "name": "Luster" }, { "scalars": [ { "value": "White, slightly yellow-gray" } ], "name": "Streak" }, { "scalars": [ { "value": "3.0-3.1" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.643-1.648" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.655-1.662" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.655-1.663" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.012-0.015" } ], "name": "Birefringence" }, { "scalars": [ { "value": "X=colorless, pale orange, red-brown, Y=Z=pale brownish yellow, pale green" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Monoclinic 2/m-prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Alstonite", "title": "Wikipedia: Alstonite" } ], "names": [ "Alstonite" ], "chemicalFormula": "BaCa(CO$_{3}$)$_{2}$", "properties": [ { "scalars": [ { "value": "Carbonate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "05.AB.35" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "14.02.05.01" } ], "name": "Dana classification" }, { "scalars": [ { "value": "17.38" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "14.40" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.123" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "90.35" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\alpha$)" }, { "scalars": [ { "value": "90.12" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "120.08" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\gamma$)" }, { "scalars": [ { "value": "297.42" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "Steep pseudohexagonal dipyramids" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Triclinic, pseudo-orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Common on pseudo-orthorhombic {1$\\bar{1}$0} and {310}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Imperfect on pseudo-orthorhombic {110}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "4-4.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.70" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.526" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.671" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.672" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.146" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Weak yellow under LW and SW" } ], "name": "fluorescence" }, { "scalars": [ { "value": "Soluble in dilute HCl" } ], "name": "Solubility" }, { "scalars": [ { "value": "Not radioactive" } ], "name": "Other" }, { "scalars": [ { "value": "P1 or P$\\bar{1}$" } ], "name": "Space group" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Stercorite", "title": "Wikipedia: Stercorite" } ], "names": [ "Stercorite" ], "chemicalFormula": "(NH$_{4}$)NaHPO$_{4}$", "properties": [ { "scalars": [ { "value": "Phosphate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "137.0077" } ], "units": "g/mol", "name": "Molecular weight" }, { "scalars": [ { "value": "Triclinic" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.615" } ], "conditions": [ { "scalars": [ { "value": "g/cm$^{3}$" } ], "name": "Note" } ], "name": "Density" }, { "scalars": [ { "value": "Fusible" } ], "name": "Fusibility" }, { "scalars": [ { "value": "Water soluble" } ], "name": "Solubility" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Glaucophane", "title": "Wikipedia: Glaucophane" } ], "names": [ "Glaucophane" ], "chemicalFormula": "$\\Box$$Na$_{2}$(Mg$_{3}$Al$_{2}$)Si$_{8}$O$_{22}$(OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Inosilicates, sodic amphibole group" } ], "name": "Category" }, { "scalars": [ { "value": "09.DE.25" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Gray, navy blue, lavender-blue" } ], "name": "Color" }, { "scalars": [ { "value": "slender long prisms, Massive granular-columnar" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic-Prismatic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Good on [110] and on [001]" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle-conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "6.0-6.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-pearly" } ], "name": "Luster" }, { "scalars": [ { "value": "Grayish blue" } ], "name": "Streak" }, { "scalars": [ { "value": "3-3.15" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.606-1.637" } ], "name": "Refractive index (n$\\alpha$)" }, { "scalars": [ { "value": "1.615-1.650" } ], "name": "Refractive index (n$\\beta$)" }, { "scalars": [ { "value": "1.627-1.655" } ], "name": "Refractive index (n$\\gamma$)" }, { "scalars": [ { "value": "0.021" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Strong" } ], "name": "Pleochroism" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Riebeckite", "title": "Wikipedia: Riebeckite" } ], "names": [ "Riebeckite" ], "chemicalFormula": "$\\Box$$Na$_{2}$(Fe$^{2+}$_{3}$Fe$^{3+}$_{2}$)Si$_{8}$O$_{22}$(OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Silicate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "9.76" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "18.04" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.33" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "103.59" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Black, dark blue, dark blue-yellow-green in thin section" } ], "name": "Color" }, { "scalars": [ { "value": "As prismatic crystals, commonly fibrous, asbestiform, earthy, massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic-Prismatic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Simple or multiple twinning parallel-{100}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {110}, intersecting at 56$^{\\circ}$ and 124$^{\\circ}$, partings on {100} and {010}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal-uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-silky" } ], "name": "Luster" }, { "scalars": [ { "value": "Pale-bluish gray" } ], "name": "Streak" }, { "scalars": [ { "value": "3.28-3.44" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.680-1.698" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.683-1.700" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.685-1.706" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.005-0.008" } ], "name": "Birefringence" }, { "scalars": [ { "value": "X=blue, indigo, Y=yellowish green, yellow brown, Z=dark blue" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Monoclinic 2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Sapphirine", "title": "Wikipedia: Sapphirine" } ], "names": [ "Sapphirine" ], "chemicalFormula": "(Mg,Al)$_{8}$(Al,Si)$_{6}$O$_{20}$", "properties": [ { "scalars": [ { "value": "Silicate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "9.DH.45" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "11.27" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "14.4" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "9.93" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "125.5" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Anhedral, granular, tabular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Uncommon on {001}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Poor-indistinct on {100}, {001}, and {010}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Subconchoidal-uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "7.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.701-1.729" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.703-1.732" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.705-1.734" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.004-0.005" } ], "name": "Birefringence" }, { "scalars": [ { "value": "X=colorless, pale reddish, yellowish green, pale yellow, Y=sky-blue, lavender-blue, bluish green, Z=blue, sapphire-blue, dark blue" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.40-3.58" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2/m" } ], "name": "Monoclinic H-M symbol" }, { "scalars": [ { "value": "Triclinic polymorphs exist" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Chlorite_group", "title": "Wikipedia: Chlorite group" } ], "names": [ "Chlorite group" ], "chemicalFormula": "(Mg,Al)$_{8}$(Al,Si)$_{6}$O$_{20}$", "properties": [ { "scalars": [ { "value": "Phyllosilicates" } ], "name": "Category" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Fayalite", "title": "Wikipedia: Fayalite" } ], "names": [ "Fayalite" ], "chemicalFormula": "Fe$_{2}$SiO$_{4}$", "properties": [ { "scalars": [ { "value": "Nesosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.AC.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "4.8211" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "10.4779" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.0889" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Greenish yellow, yellow-brown, brown, pale yellow-" } ], "name": "Color" }, { "scalars": [ { "value": "Commonly granular, compact, or massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic Dipyramidal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "On [100], also on [031], as trillings" } ], "name": "Twinning" }, { "scalars": [ { "value": "{010} moderate, {100} imperfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "6.5-7.0" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-resinous on fractures" } ], "name": "Luster" }, { "scalars": [ { "value": "1.731-1.824" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.760-1.864" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.773-1.875" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.042-0.051" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Faint" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "4.392" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "Pbnm" } ], "name": "Space group" }, { "scalars": [ { "value": "Orthorhombic dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Atacamite", "title": "Wikipedia: Atacamite" } ], "names": [ "Atacamite" ], "chemicalFormula": "Cu$_{2}$Cl(OH)$_{3}$", "properties": [ { "scalars": [ { "value": "Halide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "03.DA.10a" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "6.03" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "9.12" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.865" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Bright green, dark emerald-green-blackish green" } ], "name": "Color" }, { "scalars": [ { "value": "Slender prismatic crystals, fibrous, granular-compact, massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Contact and penetration with complex twinned groupings" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {010}, fair on {101}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3-3.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine-vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "Apple green" } ], "name": "Streak" }, { "scalars": [ { "value": "3.745-3.776" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.831" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.861" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.880" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.049" } ], "name": "Birefringence" }, { "scalars": [ { "value": "X=pale green, Y=yellow-green, Z=grass-green" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "2/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "Pmcn" } ], "name": "Space group" }, { "scalars": [ { "value": "Orthorhombic dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Cummingtonite", "title": "Wikipedia: Cummingtonite" } ], "names": [ "Cummingtonite" ], "chemicalFormula": "(Mg,Fe$_{2+}$)2(Mg,Fe$_{2+}$)$_5$Si$_8$O$_{22}$(OH)$_2$", "properties": [ { "scalars": [ { "value": "Inosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.DE.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "9.53" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "18.23" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.32" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "101.97" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Dark green, brown, gray, beige, colorless-pale green in thin section" } ], "name": "Color" }, { "scalars": [ { "value": "Rarely as distinct crystals. Columnar-fibrous and granular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Simple and lamellar-common" } ], "name": "Twinning" }, { "scalars": [ { "value": "Good on {110} intersecting at 54 and 126$^{\\circ}$" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Splintery" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-silky" } ], "name": "Luster" }, { "scalars": [ { "value": "1.639-1.671" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.647-1.689" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.664-1.708" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.025-0.037" } ], "name": "Birefringence" }, { "scalars": [ { "value": "With increasing iron content, weak, X=Y=colorless, Z=pale green" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "3.1-3.6" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Monoclinic 2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Dickite", "title": "Wikipedia: Dickite" } ], "names": [ "Dickite" ], "chemicalFormula": "Al$_{2}$Si$_{2}$O$_{5}$(OH)$_{4}$", "properties": [ { "scalars": [ { "value": "Phyllosilicates, Kaolinite-serpentine group" } ], "name": "Category" }, { "scalars": [ { "value": "09.ED.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "71.01.01.01" } ], "name": "Dana classification" }, { "scalars": [ { "value": "5.150" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8.940" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "14.424" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "96.8" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "White, with coloration from impurities" } ], "name": "Color" }, { "scalars": [ { "value": "Pseudohexagonal crystals, aggregates of platelets and compact massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Flexible but inelastic" } ], "name": "Tenacity" }, { "scalars": [ { "value": "1.5-2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Satiny-pearly" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.6" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.561-1.564" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.561-1.566" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.566-1.570" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.005-0.006" } ], "name": "Birefringence" }, { "scalars": [ { "value": "m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "Cc" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic domatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Schreibersite", "title": "Wikipedia: Schreibersite" } ], "names": [ "Schreibersite" ], "chemicalFormula": "(Fe,Ni)$_{3}$P", "properties": [ { "scalars": [ { "value": "Phosphide mineral , Meteorite mineral" } ], "name": "Category" }, { "scalars": [ { "value": "01.BD.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "01.01.21.02" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Silver-white-tin-white, tarnishes brass-yellow or brown" } ], "name": "Color" }, { "scalars": [ { "value": "Rarely in crystals, hoppered, plates, tablets, rods or needles" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Tetragonal-Disphenoidal H-M Symbol ($\\bar{4}$)" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{001} perfect, {010} indistinct, {110} indistinct" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Very brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "6.5-7" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Brilliant metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Dark gray" } ], "name": "Streak" }, { "scalars": [ { "value": "7.0-7.3" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Tantalite", "title": "Wikipedia: Tantalite" } ], "names": [ "Tantalite" ], "chemicalFormula": "(Fe,Mn)Ta$_{2}$O$_{6}$", "properties": [ { "scalars": [ { "value": "Oxide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "04.DB.35" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Dark black, iron-black-dark brown, reddish brown" } ], "name": "Color" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Good in one direction" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Subconchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "6-6.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Submetallic-almost resinous" } ], "name": "Luster" }, { "scalars": [ { "value": "Brownish-red-black" } ], "name": "Streak" }, { "scalars": [ { "value": "8.0+" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Tephroite", "title": "Wikipedia: Tephroite" } ], "names": [ "Tephroite" ], "chemicalFormula": "Mn$_{2}$SiO$_{4}$", "properties": [ { "scalars": [ { "value": "Silicate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "4.88(2)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "10.61(2)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.24(2) : Z=4" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "Olive-green, bluish green, gray, $^{\\circ}$esh-red, reddish brown, pale green in thin section, may be colorless" } ], "name": "Color" }, { "scalars": [ { "value": "Crystals typically short, prismatic,-4 cm, or anhedral, equidimensional. Commonly in disseminated grains, compact, or massive." } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic-Dipyramidal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Uncommon on {011}" } ], "name": "Twinning" }, { "scalars": [ { "value": "{010}, distinct, {001}, imperfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven-conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-greasy" } ], "name": "Luster" }, { "scalars": [ { "value": "Pale gray" } ], "name": "Streak" }, { "scalars": [ { "value": "3.87-4.12" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.759" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.797" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.860" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.101" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Weak, X=brownish red, Y=reddish, Z=greenish blue." } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Orthorhombic 2/m 2/m 2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Tsavorite", "title": "Wikipedia: Tsavorite" } ], "names": [ "Tsavorite" ], "chemicalFormula": "Ca$_{3}$Al$_{2}$Si$_{3}$O$_{12}$", "properties": [ { "scalars": [ { "value": "Light-deep green" } ], "name": "Color" }, { "scalars": [ { "value": "cubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "7-7.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "1.740" } ], "name": "Refractive index" }, { "scalars": [ { "value": "3.60-3.68" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Bl\u00f6dite", "title": "Wikipedia: Bl\u00f6dite" } ], "names": [ "Bl\u00f6dite" ], "chemicalFormula": "Na$_{2}$Mg(SO$_{4}$)$_{2}$.4H$_{2}$O", "properties": [ { "scalars": [ { "value": "Sulfate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "11.04" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8.15" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.49" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "100.41" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "07.CC.50" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Colorless, yellow, may be dark gray, bluish green, or reddish due-inclusions" } ], "name": "Color" }, { "scalars": [ { "value": "Prismatic-equant crystals, granular, massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2.5-3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.483" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.486" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.487" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.004" } ], "name": "Birefringence" }, { "scalars": [ { "value": "2.23" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 2$_{1}$/a" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/H\u00fcbnerite", "title": "Wikipedia: H\u00fcbnerite" } ], "names": [ "H\u00fcbnerite" ], "chemicalFormula": "MnWO$_{4}$", "properties": [ { "scalars": [ { "value": "Oxide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "04.DB.30" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "4.86" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.78" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.02" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "90.816" } ], "units": "$^{\\circ}$", "name": "Unit cell (beta)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Yellowish brown-reddish brown, blackish brown, black, Deep red internal reflections in reflected light" } ], "name": "Color" }, { "scalars": [ { "value": "Prismatic striated crystals, tabular-flattened, in radiating groups" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Contact twins" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {010}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Irregular/uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "4-4.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic-adamantine-wards resinous." } ], "name": "Luster" }, { "scalars": [ { "value": "Yellow-reddish brown, greenish gray" } ], "name": "Streak" }, { "scalars": [ { "value": "7.12-7.18" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.17-2.2" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "2.22" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "2.3-2.32" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.1200-0.1300" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Perceptible, X=yellow-green, red-orange, Y=yellowish brown-greenish yellow, red-orange-red, Z=green, brick-red-red" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 2/c" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Xenotime", "title": "Wikipedia: Xenotime" } ], "names": [ "Xenotime" ], "chemicalFormula": "YPO$_{4}$", "properties": [ { "scalars": [ { "value": "Phosphate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.AD.35" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Brown, brownish yellow, gray" } ], "name": "Color" }, { "scalars": [ { "value": "Prismatic, radial aggregates, granular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Tetragonal 4/m-dipyramidal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect [100]" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven-splintery" } ], "name": "Fracture" }, { "scalars": [ { "value": "4.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-resinous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.720-1.815" } ], "name": "Refractive index" }, { "scalars": [ { "value": "0.096" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Dichroic" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Pale brown, yellowish or reddish,-white" } ], "name": "Streak" }, { "scalars": [ { "value": "4.4-5.1" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Not Radioactive or luminescent" } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Feroxyhyte", "title": "Wikipedia: Feroxyhyte" } ], "names": [ "Feroxyhyte" ], "chemicalFormula": "$\\delta$-Fe$^{3+}$O(OH)", "properties": [ { "scalars": [ { "value": "Oxide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "04.FE.40" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "06.01.04.04" } ], "name": "Dana classification" }, { "scalars": [ { "value": "2.95" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "4.56" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "1" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "88.85" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "Brown, yellow-brown" } ], "name": "Color" }, { "scalars": [ { "value": "Concretionary, massive, nodular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Hexagonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Yellow" } ], "name": "Streak" }, { "scalars": [ { "value": "4.31" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "4.2" } ], "name": "Density" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Adamite", "title": "Wikipedia: Adamite" } ], "names": [ "Adamite" ], "chemicalFormula": "Zn$_{2}$AsO$_{4}$OH", "properties": [ { "scalars": [ { "value": "Arsenate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "08.BB.30" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "41.06.06.03 Olivenite Group" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Pale yellow, honey-yellow, brownish yellow, reddish, rarely white, colorless, blue, pale green-green, may be zoned," } ], "name": "Color" }, { "scalars": [ { "value": "Wedge-like prisms typically in druses and radiating clusters-also smooth botryoidal masses." } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: Pnnm" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{101}, good, {010}, poor" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven-subconchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.708-1.722" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.742-1.744" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.763-1.773" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.055" } ], "name": "Birefringence" }, { "scalars": [ { "value": "white-pale green" } ], "name": "Streak" }, { "scalars": [ { "value": "4.32-4.48" } ], "conditions": [ { "scalars": [ { "value": "measured" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "May fluoresce and phosphoresce lemon-yellow under SW and LW UV" } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Powellite", "title": "Wikipedia: Powellite" } ], "names": [ "Powellite" ], "chemicalFormula": "CaMoO$_{4}$", "properties": [ { "scalars": [ { "value": "Molybdate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "5.222" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "11.425" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "200.02" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "07.GA.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Straw-yellow, greenish yellow, yellow-brown, brown, colorless, may show blue-black zones" } ], "name": "Color" }, { "scalars": [ { "value": "Flat tabular crystals often paper-thin on {001}, may be crusty-pulverulent or massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Tetragonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Indistinct on {011}, {112} and {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "3.5-4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine" } ], "name": "Luster" }, { "scalars": [ { "value": "1.974" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.984" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.010" } ], "name": "Birefringence" }, { "scalars": [ { "value": "O=blue, E=green" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Fluoresces bright yellow under shortwave ultraviolet light, dimmer under longwave" } ], "name": "fluorescence" }, { "scalars": [ { "value": "light yellow" } ], "name": "Streak" }, { "scalars": [ { "value": "4.25" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "4/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "I 4$_{1}$/a" } ], "name": "Space group" }, { "scalars": [ { "value": "Tetragonal dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Tyuyamunite", "title": "Wikipedia: Tyuyamunite" } ], "names": [ "Tyuyamunite" ], "chemicalFormula": "Ca(UO$_{2}$)$_{2}$V$_{2}$O$_{8}$.(5-8)H$_{2}$O", "properties": [ { "scalars": [ { "value": "Vanadate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "4.HB.25" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "40.2a.26.1" } ], "name": "Dana classification" }, { "scalars": [ { "value": "10.63" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "28.36" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "20.4" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "Platy crystals often in radiating sprays, coatings, massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {001}, micaceous, distinct on {100} & {010}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "1.5-2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine, waxy, pearly on {101}, dull" } ], "name": "Luster" }, { "scalars": [ { "value": "Yellow" } ], "name": "Streak" }, { "scalars": [ { "value": "3.57-4.35" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.675" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.860-1.870" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.885-1.895" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.210-0.220" } ], "name": "Birefringence" }, { "scalars": [ { "value": "weak: X=nearly colourless, Y=pale canary yellow, Z=canary yellow" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "25px Radioactive" } ], "name": "Other" }, { "scalars": [ { "value": "2/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "Pnan" } ], "name": "Space group" }, { "scalars": [ { "value": "Orthorhombic dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Artinite", "title": "Wikipedia: Artinite" } ], "names": [ "Artinite" ], "chemicalFormula": "Mg$_{2}$(OH)$_{2}$CO$_{3}$.3H$_{2}$O", "properties": [ { "scalars": [ { "value": "Carbonate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "05.DA.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "16.56" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "3.15" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.22" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "99.15" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "1" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "White" } ], "name": "Color" }, { "scalars": [ { "value": "Acicular crystals, fibrous veinlets, botyroidal crusts, and spherical aggregates" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "On {100} perfect, on {001} good." } ], "name": "Cleavage" }, { "scalars": [ { "value": "2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, silky" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.01-2.03" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.488-1.489" } ], "name": "Refractive index (n$\\alpha$)" }, { "scalars": [ { "value": "1.533-1.534" } ], "name": "Refractive index (n$\\beta$)" }, { "scalars": [ { "value": "1.556-1.557" } ], "name": "Refractive index (n$\\gamma$)" }, { "scalars": [ { "value": "0.068" } ], "name": "Birefringence" }, { "scalars": [ { "value": "C 2/m" } ], "name": "Monoclinic Space group" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Bertrandite", "title": "Wikipedia: Bertrandite" } ], "names": [ "Bertrandite" ], "chemicalFormula": "Be$_{4}$Si$_{2}$O$_{7}$(OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Sorosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.BD.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "8.7135(4)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "15.268(1)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "4.5683(3)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless-pale yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Thin tabular, prismatic-needle-like crystals commonly in radial clusters" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Common on {011} or {021} forming heart or V shaped twins" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {001}, distinct on {100}, {010} and {110}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "6-7" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, pearly on cleavage surfaces" } ], "name": "Luster" }, { "scalars": [ { "value": "2.59-2.60" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.591" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.605" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.614" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.023" } ], "name": "Birefringence" }, { "scalars": [ { "value": "mm2" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "Ccm2$_{1}$" } ], "name": "Space group" }, { "scalars": [ { "value": "Orthorhombic pyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Cotunnite", "title": "Wikipedia: Cotunnite" } ], "names": [ "Cotunnite" ], "chemicalFormula": "PbCl$_{2}$", "properties": [ { "scalars": [ { "value": "Halide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "03.DC.85" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "7.6222(5)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "9.0448(7)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "4.5348(4)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless-white, pale green, pale yellow" } ], "name": "Color" }, { "scalars": [ { "value": "As elongated, flattened prismatic crystals, in aggregates of radiating sprays, granular, crustiform or pseudomorphs" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {010}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Subconchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Slightly sectile" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine, silky-pearly" } ], "name": "Luster" }, { "scalars": [ { "value": "5.80" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.199" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "2.217" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "2.260" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.061" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Slight in water" } ], "name": "Solubility" }, { "scalars": [ { "value": "Orthorhombic (2/m 2/m 2/m) dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Villiaumite", "title": "Wikipedia: Villiaumite" } ], "names": [ "Villiaumite" ], "chemicalFormula": "NaF", "properties": [ { "scalars": [ { "value": "Halide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "03.AA.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "4.63" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Carmine-red, lavender-pink-light orange" } ], "name": "Color" }, { "scalars": [ { "value": "Cubic crystals rare, commonly granular, massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Cubic hexoctahedral" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{001}, perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2-2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.79" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.327-1.328" } ], "name": "Refractive index (n)" }, { "scalars": [ { "value": "Strong E=yellow, O=pink-deep carmine" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "dark red-orange and yellow fluorescence under SW and LW UV" } ], "name": "fluorescence" }, { "scalars": [ { "value": "Soluble in water" } ], "name": "Solubility" }, { "scalars": [ { "value": "Isometric 4/m $\\bar{3}$ 2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Crookesite", "title": "Wikipedia: Crookesite" } ], "names": [ "Crookesite" ], "chemicalFormula": "Cu$_{7}$(Tl,Ag)Se$_{4}$", "properties": [ { "scalars": [ { "value": "Selenide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.BD.50" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Lead-gray" } ], "name": "Color" }, { "scalars": [ { "value": "As finely divided, disseminated specks, and as small veinlets." } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Tetragonal-Disphenoidal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Good, two at right angles" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Fracture" }, { "scalars": [ { "value": "2.5-3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "6.90" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Cobaltite", "title": "Wikipedia: Cobaltite" } ], "names": [ "Cobaltite" ], "chemicalFormula": "CoAsS", "properties": [ { "scalars": [ { "value": "Sulfide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.EB.25" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.582" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.582" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.582" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Reddish silver white, violet steel gray-black" } ], "name": "Color" }, { "scalars": [ { "value": "Granular-massive, rarely as striated crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic, pseudocubic." } ], "name": "Crystal system" }, { "scalars": [ { "value": "About [111] creating pseudo-cubic forms and striations" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Grayish-black" } ], "name": "Streak" }, { "scalars": [ { "value": "6.33" } ], "conditions": [ { "scalars": [ { "value": "g/cm$^{3}$" } ], "name": "Note" } ], "name": "Density" }, { "scalars": [ { "value": "Orthorhombic mm2" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Bismuthinite", "title": "Wikipedia: Bismuthinite" } ], "names": [ "Bismuthinite" ], "chemicalFormula": "Bi$_{2}$S$_{3}$", "properties": [ { "scalars": [ { "value": "Sulfide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.DB.05a" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Lead-gray-tin-white, with a yellowish or iridescent" } ], "name": "Color" }, { "scalars": [ { "value": "Slender prismatic-acicular, massive lamellar" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic-Dipyramidal 2/m 2/m 2/m" } ], "name": "Crystal system" }, { "scalars": [ { "value": "[010] Perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle-sectile" } ], "name": "Fracture" }, { "scalars": [ { "value": "2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Lead grey" } ], "name": "Streak" }, { "scalars": [ { "value": "6.8-7.2" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Dawsonite", "title": "Wikipedia: Dawsonite" } ], "names": [ "Dawsonite" ], "chemicalFormula": "NaAlCO$_{3}$(OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Carbonate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "05.BB.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "16a.03.08.01" } ], "name": "Dana classification" }, { "scalars": [ { "value": "white" } ], "name": "Color" }, { "scalars": [ { "value": "encrustations or radial" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "perfect on {110}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.466" } ], "name": "Refractive index (''n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.542" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.596" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "''''=0.130" } ], "name": "Birefringence" }, { "scalars": [ { "value": "white" } ], "name": "Streak" }, { "scalars": [ { "value": "2.436" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2/m 2/m 2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Ferberite", "title": "Wikipedia: Ferberite" } ], "names": [ "Ferberite" ], "chemicalFormula": "FeWO$_{4}$", "properties": [ { "scalars": [ { "value": "Tungstate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "04.DB.30" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "4.72" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.7" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "4.96" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "90" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Black, dark brown in transmitted light" } ], "name": "Color" }, { "scalars": [ { "value": "Bladed crystals, massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Contact or interpenetrant or lamellar twins" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {010}, partings on {100} and {102}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "4-4.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Submetallic-metallic adamantine" } ], "name": "Luster" }, { "scalars": [ { "value": "Brownish black" } ], "name": "Streak" }, { "scalars": [ { "value": "7.58" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.255" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "2.305" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "2.414" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.159" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Slightly magnetic" } ], "name": "Other" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 2/c" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Eudialyte", "title": "Wikipedia: Eudialyte" } ], "names": [ "Eudialyte" ], "chemicalFormula": "Na$_{15}$Ca$_{6}$(Fe,Mn)$_{3}$Zr$_{3}$SiO(O,OH,H$_{2}$O)$_{3}$", "properties": [ { "scalars": [ { "value": "Cyclosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.CO.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Red, magenta, brown, also blue and yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Crystals short rhombohedral-long prismatic, granular, irregular masses" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Distinct on {0001} imperfect on {11$\\bar{2}$0}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.606-1.610" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.610-1.613" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.004" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Weak: O=colorless, pale yellow, pink, E=pink-colorless" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.74-3.10" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "H$_{2}$SO$_{4}$" } ], "name": "Solubility" }, { "scalars": [ { "value": "Mildly Radioactive" } ], "name": "Other" }, { "scalars": [ { "value": "$\\bar{3}$2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "R$\\bar{3}$m" } ], "name": "Space group" }, { "scalars": [ { "value": "Trigonal-hexagonal scalenohedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Tellurite", "title": "Wikipedia: Tellurite" } ], "names": [ "Tellurite" ], "chemicalFormula": "TeO$_{2}$", "properties": [ { "scalars": [ { "value": "Oxide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "04.DE.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.6" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "12.03" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.46" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Yellow-white" } ], "name": "Color" }, { "scalars": [ { "value": "Flattened prismatic-acicular crystals, radiating groups, powdery, massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {010}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Flexible" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Sub-adamantine" } ], "name": "Luster" }, { "scalars": [ { "value": "5.88-5.92" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.000" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "2.180" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "2.350" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.350" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Sleight in water" } ], "name": "Solubility" }, { "scalars": [ { "value": "2/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P bca" } ], "name": "Space group" }, { "scalars": [ { "value": "Orthorhombic dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Montmorillonite", "title": "Wikipedia: Montmorillonite" } ], "names": [ "Montmorillonite" ], "chemicalFormula": "(Na,Ca)$_{0.33}$(Al,Mg)$_{2}$(Si$_{4}$O$_{10}$)(OH)$_{2}$.''n''H$_{2}$O", "properties": [ { "scalars": [ { "value": "Phyllosilicates, Smectite group" } ], "name": "Category" }, { "scalars": [ { "value": "5.17" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8.94" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "9.95" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "99.54" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "1" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "White, pale pink, blue, yellow, red, green" } ], "name": "Color" }, { "scalars": [ { "value": "compact masses of lamellar or globular microcrystalline aggregates" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{001} perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "1-2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Dull, earthy" } ], "name": "Luster" }, { "scalars": [ { "value": "1.7-2" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.485-1.535" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.504-1.550" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.505-1.550" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.020" } ], "name": "Birefringence" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "C2/m" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Tetrahedrite", "title": "Wikipedia: Tetrahedrite" } ], "names": [ "Tetrahedrite" ], "chemicalFormula": "(Cu,Fe)12Sb4S13", "properties": [ { "scalars": [ { "value": "Sulfosalt mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.GB.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "10.39(16)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Steel gray-iron-gray" } ], "name": "Color" }, { "scalars": [ { "value": "Groups of tetrahedral crystals, massive, coarse-fine compact granular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Cubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Contact and penetration twins on {111}" } ], "name": "Twinning" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven-subconchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Somewhat brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3.5-4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic, commonly splendent" } ], "name": "Luster" }, { "scalars": [ { "value": "Black, brown-dark red" } ], "name": "Streak" }, { "scalars": [ { "value": "n" } ], "name": "Refractive index" }, { "scalars": [ { "value": "greater" } ], "name": "Refractive index" }, { "scalars": [ { "value": "than" } ], "name": "Refractive index" }, { "scalars": [ { "value": "2.72" } ], "name": "Refractive index" }, { "scalars": [ { "value": "4.97" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Cubic $\\bar{4}$3m-hextetrahedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Tausonite", "title": "Wikipedia: Tausonite" } ], "names": [ "Tausonite" ], "chemicalFormula": "SrTiO$_{3}$", "properties": [ { "scalars": [ { "value": "Oxide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "4.CC.35" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "3.9" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "1" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Red, red-brown, orange, dark gray" } ], "name": "Color" }, { "scalars": [ { "value": "Cubic and octahedral crystals, granular, massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Cubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "6-6.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine" } ], "name": "Luster" }, { "scalars": [ { "value": "4.88" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.40" } ], "name": "Refractive index (n)" }, { "scalars": [ { "value": "4/m$\\bar{3}$2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P m3m" } ], "name": "Space group" }, { "scalars": [ { "value": "Isometric hexoctahedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Material_properties_of_diamond", "title": "Wikipedia: Material properties of diamond" } ], "names": [ "Diamond" ], "chemicalFormula": "C", "properties": [ { "scalars": [ { "value": "Native Nonmetal, Mineral" } ], "name": "Category" }, { "scalars": [ { "value": "Most often colorless-yellow or brown. Rarely pink, orange, green, blue, gray, or red." } ], "name": "Color" }, { "scalars": [ { "value": "Octahedral, cubo-octahedral, spherical or cubic" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Diamond cubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Octahedral, perfect and easy" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "10" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "2.417" } ], "name": "Refractive index" }, { "scalars": [ { "value": "None" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "white" } ], "name": "Streak" }, { "scalars": [ { "value": "3.516-3.525" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Burns above 700 $^{\\circ}$C in air." } ], "name": "Fusibility" }, { "scalars": [ { "value": "Resistant-acids, but dissolves irreversibly in hot steel" } ], "name": "Solubility" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Demantoid", "title": "Wikipedia: Demantoid" } ], "names": [ "Demantoid" ], "chemicalFormula": "Ca$_{3}$Fe$_{2}$Si$_{3}$O$_{12}$", "properties": [ { "scalars": [ { "value": "light-deep green" } ], "name": "Color" }, { "scalars": [ { "value": "cubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "6.5-7.0" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "adamantine" } ], "name": "Luster" }, { "scalars": [ { "value": "1.880-1.889" } ], "name": "Refractive index" }, { "scalars": [ { "value": "none" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "3.84" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Cr" } ], "name": "impurities" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Willemite", "title": "Wikipedia: Willemite" } ], "names": [ "Willemite" ], "chemicalFormula": "Zn$_{2}$SiO$_{4}$", "properties": [ { "scalars": [ { "value": "Silicate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "09.AA.05, VIII/A.01-20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "51.1.1.2" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Colorless-white, gray, flesh-red, dark brown, honey-yellow, apple-green, blue" } ], "name": "Color" }, { "scalars": [ { "value": "Fibrous, botryoidal-massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal Rhombohedral $\\bar{3}$3" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{0001}, {11$\\bar{2}$0}-imperfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Irregular-conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "5.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-resinous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.691-1.694" } ], "name": "Refractive index (n$\\omega$)" }, { "scalars": [ { "value": "1.719-1.725" } ], "name": "Refractive index (n$\\epsilon$)" }, { "scalars": [ { "value": "0.028" } ], "name": "Birefringence" }, { "scalars": [ { "value": "3.9-4.2" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Strongly fluorescent-may be phosphorescent" } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Esperite", "title": "Wikipedia: Esperite" } ], "names": [ "Esperite" ], "chemicalFormula": "PbCa$_{3}$Zn$_{4}$(SiO$_{4}$)$_{4}$", "properties": [ { "scalars": [ { "value": "Silicate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "White" } ], "name": "Color" }, { "scalars": [ { "value": "Typically massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic-Prismatic (2/m)" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Distinct on [010] and [100]-poor on [101]" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal, brittle" } ], "name": "Fracture" }, { "scalars": [ { "value": "5-5.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.762" } ], "name": "Refractive index (n$\\alpha$)" }, { "scalars": [ { "value": "1.770" } ], "name": "Refractive index (n$\\beta$)" }, { "scalars": [ { "value": "1.774" } ], "name": "Refractive index (n$\\gamma$)" }, { "scalars": [ { "value": "Max 0.012" } ], "name": "Birefringence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "4.28-4.42" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Brilliant yellow fluorescence under SW UV, kelly green cathodoluminescence." } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Hardystonite", "title": "Wikipedia: Hardystonite" } ], "names": [ "Hardystonite" ], "chemicalFormula": "Ca$_{2}$ZnSi$_{2}$O$_{7}$", "properties": [ { "scalars": [ { "value": "Sorosilicates" } ], "name": "Category" }, { "scalars": [ { "value": "09.BB.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "55.4.2.2" } ], "name": "Dana classification" }, { "scalars": [ { "value": "7.8287(16)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.0140(2)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "light brownish white, pale greyish-white, very pale pink" } ], "name": "Color" }, { "scalars": [ { "value": "Massive granular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Tetragonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "[001] good, [100] and [110] fair" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3-4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "vitreous, resinous, greasy, dull" } ], "name": "Luster" }, { "scalars": [ { "value": "3.396-3.443" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.672" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.661" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "purple-violet blue in short wave ultraviolet light" } ], "name": "fluorescence" }, { "scalars": [ { "value": "Tetragonal $\\bar{4}$ 2m scalenohedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Tokyoite", "title": "Wikipedia: Tokyoite" } ], "names": [ "Tokyoite" ], "chemicalFormula": "Ba$_{2}$(Mn$^{3+}$,Fe$^{3+}$)OH(VO$_{4}$)$_{2}$", "properties": [ { "scalars": [ { "value": "Vanadate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "08.BG.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "9.104" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "6.132" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "7.895 $\\beta$=112.2$^{\\circ}$" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Reddish black" } ], "name": "Color" }, { "scalars": [ { "value": "Occurs as splotchy, anhedral crystals forming inclusions" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic-Prismatic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None observed" } ], "name": "Cleavage" }, { "scalars": [ { "value": "4.5-5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "Deep brownish red" } ], "name": "Streak" }, { "scalars": [ { "value": "4.62" } ], "conditions": [ { "scalars": [ { "value": "calculated" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.99" } ], "name": "Refractive index (a)" }, { "scalars": [ { "value": "2.03" } ], "name": "Refractive index (g)" }, { "scalars": [ { "value": "0.0400" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Distinct, reddish orange-dark brownish red" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Monoclinic 2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Anthophyllite", "title": "Wikipedia: Anthophyllite" } ], "names": [ "Anthophyllite" ], "chemicalFormula": "$\\Box$$Mg$_{2}$Mg$_{5}$Si$_{8}$O$_{22}$(OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Inosilicates, Amphibole" } ], "name": "Category" }, { "scalars": [ { "value": "09.DE.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "18.5" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "17.9" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.28" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Gray-green, brown, and beige" } ], "name": "Color" }, { "scalars": [ { "value": "Rarely as distinct crystals. Commonly lamellar or fibrous." } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {210}, imperfect on {010}, {100}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle, elastic when fibrous" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5.5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, pearly on cleavage" } ], "name": "Luster" }, { "scalars": [ { "value": "1.598-1.674" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.605-1.685" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.615-1.697" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "indices" } ], "name": "Refractive index" }, { "scalars": [ { "value": "increase" } ], "name": "Refractive index" }, { "scalars": [ { "value": "with" } ], "name": "Refractive index" }, { "scalars": [ { "value": "Fe" } ], "name": "Refractive index" }, { "scalars": [ { "value": "content" } ], "name": "Refractive index" }, { "scalars": [ { "value": "0.017-0.023" } ], "name": "Birefringence" }, { "scalars": [ { "value": "White-gray" } ], "name": "Streak" }, { "scalars": [ { "value": "2.85-3.2" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P nma" } ], "name": "Space group" }, { "scalars": [ { "value": "Orthorhombic dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Arfvedsonite", "title": "Wikipedia: Arfvedsonite" } ], "names": [ "Arfvedsonite" ], "chemicalFormula": "[Na][Na$_{2}$][(Fe$^{2+}$)$_{4}$Fe$^{3+}$][(OH)$_{2}$Si$_{8}$O$_{22}$]", "properties": [ { "scalars": [ { "value": "Inosilicates, Amphiboles" } ], "name": "Category" }, { "scalars": [ { "value": "09.DE.25, VIII/F.08-100" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "66.1.3c.9" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Black, deep green on thin edges" } ], "name": "Color" }, { "scalars": [ { "value": "Fibrous, radial prismatic aggregates" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic-Prismatic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Simple or lamellar parallel-[100]" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on [110]" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "Deep bluish gray, gray-green" } ], "name": "Streak" }, { "scalars": [ { "value": "3.3-3.5" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.652-1.699" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.660-1.705" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.666-1.708" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.014" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Strong: Blue-greens, yellow-browns, gray-violets" } ], "name": "Pleochroism" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Zunyite", "title": "Wikipedia: Zunyite" } ], "names": [ "Zunyite" ], "chemicalFormula": "Al$_{13}$Si$_{5}$O$_{20}$(OH,F)$_{18}$Cl", "properties": [ { "scalars": [ { "value": "Sorosilicates" } ], "name": "Category" }, { "scalars": [ { "value": "09.BJ.55" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "13.8654-13.8882" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Grayish white, flesh-red, colorless in thin section" } ], "name": "Color" }, { "scalars": [ { "value": "Crystalline-occurs as well-formed fine sized crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Isometric-Hextetrahedral" } ], "name": "Crystal system" }, { "scalars": [ { "value": "On {111}, contact and penetration" } ], "name": "Twinning" }, { "scalars": [ { "value": "Good on {111}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "7" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.592-1.600" } ], "name": "Refractive index (n)" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.874(5) () 2.87-2.90 ()" } ], "conditions": [ { "scalars": [ { "value": "calc." }, { "value": "meas." } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "May fluoresce red under UV" } ], "name": "Other" }, { "scalars": [ { "value": "$\\bar{4}$ 3m" } ], "name": "Symmetry" }, { "scalars": [ { "value": "Isometric" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Pyrope", "title": "Wikipedia: Pyrope" } ], "names": [ "Pyrope" ], "chemicalFormula": "Mg$_{3}$Al$_{2}$(SiO$_{4}$)$_{3}$", "properties": [ { "scalars": [ { "value": "Nesosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.AD.25" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Red. Some varieties are very dark, almost black, while others can take-nes of purple. Some chromium-rich pyropes are thermochromic, becoming green when heated" } ], "name": "Color" }, { "scalars": [ { "value": "Euhedra typically display rhombic dodecahedral form, but trapezohedra are not uncommon, and hexoctahedra are seen in some rare samples. Massive and granular forms also occur." } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Cubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "7-7.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "greasy-vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "vitreous" } ], "name": "Polish" }, { "scalars": [ { "value": "1.74" } ], "name": "Refractive index" }, { "scalars": [ { "value": "normal" } ], "name": "Refractive index" }, { "scalars": [ { "value": "but" } ], "name": "Refractive index" }, { "scalars": [ { "value": "ranges" } ], "name": "Refractive index" }, { "scalars": [ { "value": "from" } ], "name": "Refractive index" }, { "scalars": [ { "value": "1.714-over" } ], "name": "Refractive index" }, { "scalars": [ { "value": "1.742" } ], "name": "Refractive index" }, { "scalars": [ { "value": "Isotropic, appears black in cross-polarized light" } ], "name": "Birefringence" }, { "scalars": [ { "value": "none" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "inert" } ], "name": "fluorescence" }, { "scalars": [ { "value": "broad band at 564nm with cu-ff at 440-445nm. Fine gem quality pyropes may show chromium lines in the red end of the spectrum" } ], "name": "absorption" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.78" } ], "conditions": [ { "scalars": [ { "value": "+.09-.16" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Insoluble in water, weakly soluble in HF" } ], "name": "Solubility" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Palygorskite", "title": "Wikipedia: Palygorskite" } ], "names": [ "Palygorskite" ], "chemicalFormula": "(Mg,Al)$_{2}$Si$_{4}$O$_{10}$(OH).4(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Phyllosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.EE.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "12.78" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "17.86" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.24" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "95.78" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "White, grayish, yellowish, gray-green" } ], "name": "Color" }, { "scalars": [ { "value": "Lath shaped crystals, fibrous and compact masses" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Distinct/good, good on {110}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Tough" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2-2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Waxy, earthy" } ], "name": "Luster" }, { "scalars": [ { "value": "1-2.6" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.522-1.528" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.530-1.546" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.533-1.548" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.011-0.020" } ], "name": "Birefringence" }, { "scalars": [ { "value": "X=pale yellow Y=Z=pale yellow-green" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "C 2/m" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Olivenite", "title": "Wikipedia: Olivenite" } ], "names": [ "Olivenite" ], "chemicalFormula": "Cu$_{2}$AsO$_{4}$OH", "properties": [ { "scalars": [ { "value": "Arsenate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.BB.30" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "41.06.06.01" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Olive green-yellow or brown, gray-green, grayish white" } ], "name": "Color" }, { "scalars": [ { "value": "Fibrous, globular and reniform, granular, earthy, massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic-Prismatic 2/m" } ], "name": "Crystal system" }, { "scalars": [ { "value": "On {010}" } ], "name": "Twinning" }, { "scalars": [ { "value": "{101}, {110}, indistinct" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal-irregular" } ], "name": "Fracture" }, { "scalars": [ { "value": "3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine-vitreous, pearly-silky if fibrous" } ], "name": "Luster" }, { "scalars": [ { "value": "Olive-green-brown" } ], "name": "Streak" }, { "scalars": [ { "value": "4.46" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.747-1.780" } ], "name": "Refractive index (n$\\alpha$)" }, { "scalars": [ { "value": "1.788-1.820" } ], "name": "Refractive index (n$\\beta$)" }, { "scalars": [ { "value": "1.829-1.865" } ], "name": "Refractive index (n$\\gamma$)" }, { "scalars": [ { "value": "0.082-0.085" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Weak green and yellow" } ], "name": "Pleochroism" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Oligoclase", "title": "Wikipedia: Oligoclase" } ], "names": [ "Oligoclase" ], "chemicalFormula": "(Ca,Na)(Al,Si)$_{4}$O$_{8}$, where Ca/(Ca + Na) (% anorthite) is between 10%-30%", "properties": [ { "scalars": [ { "value": "plagioclase, feldspar, tec-silicate" } ], "name": "Category" }, { "scalars": [ { "value": "usually white, with shades of grey, green, or red." } ], "name": "Color" }, { "scalars": [ { "value": "6-6.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "1.533-1.543" } ], "name": "Refractive index (n$\\alpha$)" }, { "scalars": [ { "value": "1.537-1.548" } ], "name": "Refractive index (n$\\beta$)" }, { "scalars": [ { "value": "1.542-1.552" } ], "name": "Refractive index (n$\\gamma$)" }, { "scalars": [ { "value": "1st order" } ], "name": "Birefringence" }, { "scalars": [ { "value": "2.64-2.66" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Pyrargyrite", "title": "Wikipedia: Pyrargyrite" } ], "names": [ "Pyrargyrite" ], "chemicalFormula": "Ag$_{3}$SbS$_{3}$", "properties": [ { "scalars": [ { "value": "Sulfosalt" } ], "name": "Category" }, { "scalars": [ { "value": "02.GA.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "11.047" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8.719" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "6" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Deep red-red gray" } ], "name": "Color" }, { "scalars": [ { "value": "Include prismatic crystals with rhombohedral and scalenohedral faces forming terminations. massive, granular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Complex-lammellar" } ], "name": "Twinning" }, { "scalars": [ { "value": "Distinct on {10$\\bar{1}$1}, imperfect on {01$\\bar{1}$2}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal, uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine" } ], "name": "Luster" }, { "scalars": [ { "value": "3.084" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "2.881" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.203" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Distinct" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "dark cherry red" } ], "name": "Streak" }, { "scalars": [ { "value": "5.82" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Darkens upon exposure-light, crystals are frequently striated" } ], "name": "Other" }, { "scalars": [ { "value": "3m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "R 3c" } ], "name": "Space group" }, { "scalars": [ { "value": "Trigonal ditrigonal pyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Tenorite", "title": "Wikipedia: Tenorite" } ], "names": [ "Tenorite" ], "chemicalFormula": "CuO", "properties": [ { "scalars": [ { "value": "Oxide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "04.AB.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "4.6837(5)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "3.4226(5)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.1288(6)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "99.47" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Steel-gray, iron-gray, black" } ], "name": "Color" }, { "scalars": [ { "value": "Lathlike crystals, curved, scaly, dendritic, commonly pulverulent, earthy, massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Common on {011}, forming stellate groups, lamellar" } ], "name": "Twinning" }, { "scalars": [ { "value": "Poor-indistinct" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal-uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle, flexible and elastic in thin scales" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3.5-4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic-earthy" } ], "name": "Luster" }, { "scalars": [ { "value": "Black" } ], "name": "Streak" }, { "scalars": [ { "value": "6.5" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Distinct, light-dark brown" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "C 2/c" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Mascagnite", "title": "Wikipedia: Mascagnite" } ], "names": [ "Mascagnite" ], "chemicalFormula": "(NH$_{4}$)$_{2}$SO$_{4}$", "properties": [ { "scalars": [ { "value": "Sulfate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "07.AD.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Colourless, grey, yellowish-grey, yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Distinct/ good, On {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Irregular/ uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Sectile" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2-2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, dull" } ], "name": "Luster" }, { "scalars": [ { "value": "1.768" } ], "conditions": [ { "scalars": [ { "value": "g/cm$^{3}$" } ], "name": "Note" } ], "name": "Density" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Tetradymite", "title": "Wikipedia: Tetradymite" } ], "names": [ "Tetradymite" ], "chemicalFormula": "Bi$_{2}$Te$_{2}$S", "properties": [ { "scalars": [ { "value": "Sulfide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.DC.05c" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "02.11.07.01" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Steel-gray with dull-iridescent tarnish, white in polished section" } ], "name": "Color" }, { "scalars": [ { "value": "Pyramidal prisms, commonly granular, massive-foliated, also bladed" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal-hexagonal scalenohedral ($\\bar{3}$2/m)" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Twin planes {0118} and {0115}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {0001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Laminae flexible, slightly sectile." } ], "name": "Tenacity" }, { "scalars": [ { "value": "1.5-2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic, splendent on fresh surfaces, dull if tarnished" } ], "name": "Luster" }, { "scalars": [ { "value": "Steel-gray" } ], "name": "Streak" }, { "scalars": [ { "value": "7.2-7.9" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Yttrium_aluminium_garnet", "title": "Wikipedia: Yttrium aluminium garnet" } ], "names": [ "Yttrium aluminium garnet" ], "chemicalFormula": "Y$_{3}$Al$_{5}$O$_{12}$", "properties": [ { "scalars": [ { "value": "synthetic mineral" } ], "name": "Category" }, { "scalars": [ { "value": "usually colorless, but may be pink, red, orange, yellow, green, blue, purple" } ], "name": "Color" }, { "scalars": [ { "value": "cubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "none" } ], "name": "Cleavage" }, { "scalars": [ { "value": "conchoidal-uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "8.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "vitreous-subadamantine" } ], "name": "Luster" }, { "scalars": [ { "value": "vitreous-subadamantine" } ], "name": "Polish" }, { "scalars": [ { "value": "1.833" } ], "name": "Refractive index" }, { "scalars": [ { "value": "none" } ], "name": "Birefringence" }, { "scalars": [ { "value": "none" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "''colorless'' s-nes-inert-moderate orange in long wave, inert-weak orange in short wave, ''blue'' and ''pink'' s-nes-inert, ''yellow-green'' s-nes-very strong yellow in long and short wave also phosphoresces, ''green'' s-nes-strong red in long wave, weak red in short wave" } ], "name": "fluorescence" }, { "scalars": [ { "value": "4.5-4.6" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Stannite", "title": "Wikipedia: Stannite" } ], "names": [ "Stannite" ], "chemicalFormula": "Cu$_{2}$FeSnS$_{4}$", "properties": [ { "scalars": [ { "value": "Sulfide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.CB.15a" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.4432" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "10.7299" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Steel-gray-iron-black, may tarnish blue" } ], "name": "Color" }, { "scalars": [ { "value": "Rarely as pseudo-octahedral crystals also massive, granular, and disseminated" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Tetragonal-Scalenohedral H-M Symbol ($\\bar{4}$2m) Space Group: $\\bar{4}$2m" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Penetration twins on {102}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Indistinct on {110} and {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Black" } ], "name": "Streak" }, { "scalars": [ { "value": "4.3-4.5" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Tetragonal $\\bar{4}$ 2m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Teallite", "title": "Wikipedia: Teallite" } ], "names": [ "Teallite" ], "chemicalFormula": "PbSnS$_{2}$", "properties": [ { "scalars": [ { "value": "Sulfide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "02.CD.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "4.26" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "11.41" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "4.09" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "Silvery grey, lead-gray-iron-gray, tarnishes dull or iridescent" } ], "name": "Color" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{001} perfect , flexible" } ], "conditions": [ { "scalars": [ { "value": "lamellar cleavage" } ], "name": "Note" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Malleable" } ], "name": "Tenacity" }, { "scalars": [ { "value": "1.5-2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Black" } ], "name": "Streak" }, { "scalars": [ { "value": "6.36" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Weak" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "mmm (2/m 2/m 2/m)-Dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Stishovite", "title": "Wikipedia: Stishovite" } ], "names": [ "Stishovite" ], "chemicalFormula": "SiO$_{2}$", "properties": [ { "scalars": [ { "value": "Mineral" } ], "name": "Category" }, { "scalars": [ { "value": "04.DA.40" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "4.1772(7)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "2.6651(4)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless" } ], "conditions": [ { "scalars": [ { "value": "when pure" } ], "name": "Note" } ], "name": "Color" }, { "scalars": [ { "value": "Tetragonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "9-9.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.799-1.800" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.826-1.845" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.027" } ], "name": "Birefringence" }, { "scalars": [ { "value": "4.287" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "4$_{2}$/m 2$_{1}$/n 2$_{1}$/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 4$_{2}$/mnm No. 136" } ], "name": "Space group" }, { "scalars": [ { "value": "Tetragonal ditetragonal dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Bournonite", "title": "Wikipedia: Bournonite" } ], "names": [ "Bournonite" ], "chemicalFormula": "PbCuSbS$_{3}$", "properties": [ { "scalars": [ { "value": "Sulfosalt mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.GA.50" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "3.4.3.2" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Steel-gray-iron-black" } ], "name": "Color" }, { "scalars": [ { "value": "Crystals short prismatic-tabular, typically striated, commonly as subparallel aggregates. Also massive, granular-compact" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "On {110}, commonly forming cross or cogwheel aggregates" } ], "name": "Twinning" }, { "scalars": [ { "value": "[010] Imperfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Subconchoidal-uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "2.5-3.0" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Brilliant-dull" } ], "name": "Luster" }, { "scalars": [ { "value": "Steel-gray-iron-black" } ], "name": "Streak" }, { "scalars": [ { "value": "5.7-5.9" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Very weak" } ], "name": "Pleochroism" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Danburite", "title": "Wikipedia: Danburite" } ], "names": [ "Danburite" ], "chemicalFormula": "CaB$_{2}$(SiO$_{4}$)$_{2}$", "properties": [ { "scalars": [ { "value": "Tec-silicates" } ], "name": "Category" }, { "scalars": [ { "value": "9.FA.65" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "56.3.1.1" } ], "name": "Dana classification" }, { "scalars": [ { "value": "8.038(3)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8.752(5)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "7.73" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Euhedral prismatic crystals, disseminated masses" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{001} Poor" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Subconchoidal-uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "7-7.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-greasy" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.93-3.02" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.627-1.633" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.630-1.636" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.633-1.639" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.006" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Fluorescent and thermoluminescent (red), Short UV=violet blue, Long UV=blue-blue-green" } ], "name": "fluorescence" }, { "scalars": [ { "value": "2/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "Pnam" } ], "name": "Space group" }, { "scalars": [ { "value": "Orthorhombic dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Andesine", "title": "Wikipedia: Andesine" } ], "names": [ "Andesine" ], "chemicalFormula": "(Ca,Na)(Al,Si)$_{4}$O$_{8}$, where Ca/(Ca + Na) is between 30%-50%", "properties": [ { "scalars": [ { "value": "plagioclase, feldspar, tec-silicate" } ], "name": "Category" }, { "scalars": [ { "value": "8.155" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "12.9" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "9.16" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "93.917" } ], "units": "$^{\\circ}$", "name": "Unit cell (alpha)" }, { "scalars": [ { "value": "116.3333" } ], "units": "$^{\\circ}$", "name": "Unit cell (beta)" }, { "scalars": [ { "value": "89.166" } ], "units": "$^{\\circ}$", "name": "Unit cell (gamma)" }, { "scalars": [ { "value": "6" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "White, gray, green, yellow, flesh-red" } ], "name": "Color" }, { "scalars": [ { "value": "Crystals rare,-2 cm, commonly massive or granular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Triclinicpinacoidal H-M Symbol ($\\bar{1}$)" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Common following albite, pericline, and carlsbad twin laws" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {001}, good on {010}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven-conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "6-6.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Subvitreous-pearly" } ], "name": "Luster" }, { "scalars": [ { "value": "1.543-1.554" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.547-1.559" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.552-1.562" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.009" } ], "name": "Birefringence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.66-2.68" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Triclinic pinacoidal ($\\bar{1}$)" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Vesuvianite", "title": "Wikipedia: Vesuvianite" } ], "names": [ "Vesuvianite" ], "chemicalFormula": "Ca$_{10}$(Mg, Fe)$_{2}$Al$_{4}$(SiO$_{4}$)$_{5}$(Si$_{2}$O$_{7}$)$_{2}$(OH,F)$_{4}$", "properties": [ { "scalars": [ { "value": "Sorosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.BG.35" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "15.52" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "11.82" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Yellow, green, brown, colorless-white, blue, violet, bluish green, pink, red, black, commonly zoned" } ], "name": "Color" }, { "scalars": [ { "value": "Short pyramidal-long prismatic crystals common, massive-columnar" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Tetragonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Fine twin domains observed" } ], "name": "Twinning" }, { "scalars": [ { "value": "Poor on {110} and {100} very poor on {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Sub conchoidal-irregular" } ], "name": "Fracture" }, { "scalars": [ { "value": "6-7" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-resinous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.703-1.752" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.700-1.746" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.004-0.006" } ], "name": "Birefringence" }, { "scalars": [ { "value": "slight in colored varieties" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.32-3.43" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Vesuvianite is virtually insolouble in acids" } ], "name": "Solubility" }, { "scalars": [ { "value": "striated lengthwise" } ], "name": "Other" }, { "scalars": [ { "value": "Tetragonal 4/m 2/m 2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Ferrierite", "title": "Wikipedia: Ferrierite" } ], "names": [ "Ferrierite" ], "chemicalFormula": "(A\"position)$_{3-5}$Mg[Al$_{5-7}$Si$_{27.5-31}$O$_{72}$].18H$_{2}$O \"", "properties": [ { "scalars": [ { "value": "Zeolite" } ], "name": "Category" }, { "scalars": [ { "value": "09.GD.50" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Clinohumite", "title": "Wikipedia: Clinohumite" } ], "names": [ "Clinohumite" ], "chemicalFormula": "(Mg,Fe)$_{9}$(SiO$_{4}$)$_{4}$(F,OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Nesosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "13.71" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "4.75" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "10.29" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "100.83" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Brownish-orange, yellow, red" } ], "name": "Color" }, { "scalars": [ { "value": "Granular, prismatic, twinned" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Simple, lamellar common on {100}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Poor on {100}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Subconchoidal-uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-resinous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.623-1.702" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.636-1.709" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.651-1.728" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "+0.028" } ], "name": "Birefringence" }, { "scalars": [ { "value": "X=golden yellow, yellow-brown, deep reddish yellow, Y=pale yellow, yellow-orange, light yellow, Z=pale yellow, yellow-orange, colorless" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.17-3.35" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 2$_{1}$/c" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Alunogen", "title": "Wikipedia: Alunogen" } ], "names": [ "Alunogen" ], "chemicalFormula": "Al$_{2}$(SO$_{4}$)$_{3}$.17H$_{2}$O", "properties": [ { "scalars": [ { "value": "Sulfate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "07.CB.45" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "7.42" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "26.97" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.062" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "89.95" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\alpha$)" }, { "scalars": [ { "value": "97.566" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "91.888" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\gamma$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Platy-prismatic crystals rare, fibrous masses, crusts, and efflorescences" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Triclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "On {010}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {010}, probable on {100} and {$\\bar{31}$3}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Subconchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "1.5-2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-silky" } ], "name": "Luster" }, { "scalars": [ { "value": "1.72-1.77" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.473" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.474" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.480" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.007" } ], "name": "Birefringence" }, { "scalars": [ { "value": "$\\bar{1}$" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P$\\bar{1}$" } ], "name": "Space group" }, { "scalars": [ { "value": "Triclinic pinacoidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Diadochite", "title": "Wikipedia: Diadochite" } ], "names": [ "Diadochite" ], "chemicalFormula": "Fe$_{2}$(PO$_{4}$)(SO$_{4}$)OH.5H$_{2}$O", "properties": [ { "scalars": [ { "value": "Phosphate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.DB.05" } ], "name": "Strunz classification" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Knorringite", "title": "Wikipedia: Knorringite" } ], "names": [ "Knorringite" ], "chemicalFormula": "Mg$_{3}$Cr$_{2}$(SiO$_{4}$)$_{3}$", "properties": [ { "scalars": [ { "value": "Silicate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "09.AD.25" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "11.59" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Bluish green" } ], "name": "Color" }, { "scalars": [ { "value": "Massive and as minute grains" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Cubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "6-7" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "3.756" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.803" } ], "name": "Refractive index (n)" }, { "scalars": [ { "value": "Isometric-hexoctahedral (4/m $\\bar{3}$ 2/m)" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Spessartine", "title": "Wikipedia: Spessartine" } ], "names": [ "Spessartine" ], "chemicalFormula": "Mn$^{2+}$$_{3}$Al$_{2}$(SiO$_{4}$)$_{3}$", "properties": [ { "scalars": [ { "value": "Nesosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.AD.25" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "11.63" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Yellow through red" } ], "name": "Color" }, { "scalars": [ { "value": "Massive-crystalline" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Isometric" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Sub-conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "6.5-7.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.800" } ], "name": "Refractive index" }, { "scalars": [ { "value": "none" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Bands at 410, 420, 430 nm (or merging-form cu-ff below 430 nm, also bands at 460, 480, 520 nm. Possible weak bands at 504 or 573 nm" } ], "name": "absorption" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "4.19" }, { "value": "4.12-4.32" } ], "conditions": [ { "scalars": [ { "value": "calculated" }, { "value": "measured" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "4/m $\\bar{3}$ 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "I a3d" } ], "name": "Space group" }, { "scalars": [ { "value": "Isometric hexoctahedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Grossular", "title": "Wikipedia: Grossular" } ], "names": [ "Grossular" ], "chemicalFormula": "Ca$_{3}$Al$_{2}$(SiO$_{4}$)$_{3}$", "properties": [ { "scalars": [ { "value": "Nesosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.AD.25" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "light-dark green, light-dark yellow-reddish brown, occasionally translucent-opaque pink. It is also but rarely found in colorless form" } ], "name": "Color" }, { "scalars": [ { "value": "cubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "none" } ], "name": "Cleavage" }, { "scalars": [ { "value": "conchoidal-uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "7-7.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "greasy-vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "vitreous" } ], "name": "Polish" }, { "scalars": [ { "value": "1.740" } ], "name": "Refractive index" }, { "scalars": [ { "value": "none" } ], "name": "Birefringence" }, { "scalars": [ { "value": "none" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "near colorless-light green-inert-weak orange in longwave and weak yellow-orange in shortwave, yellow-inert-weak orange in longwave and shortwave" } ], "name": "fluorescence" }, { "scalars": [ { "value": "Hessonite sometimes shows bands at 407 and 430nm" } ], "name": "absorption" }, { "scalars": [ { "value": "3.61" } ], "conditions": [ { "scalars": [ { "value": "+.12-.04" } ], "name": "Note" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Andradite", "title": "Wikipedia: Andradite" } ], "names": [ "Andradite" ], "chemicalFormula": "Ca$_{3}$Fe$_{2}$(SiO$_{4}$)$_{3}$", "properties": [ { "scalars": [ { "value": "Garnet group" } ], "name": "Category" }, { "scalars": [ { "value": "09.AD.25" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "12.056" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Yellow, greenish yellow-emerald-green, dark green, brown, brownish red, brownish yellow, grayish black, black, may be sectored" } ], "name": "Color" }, { "scalars": [ { "value": "Commonly well-crystallized dodecahedra, trapezohedra, or combinations, also granular-massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Cubic-Hexoctahedral" } ], "name": "Crystal system" }, { "scalars": [ { "value": "none" } ], "name": "Cleavage" }, { "scalars": [ { "value": "conchoidal-uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "6.5-7" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine-resinous, dull" } ], "name": "Luster" }, { "scalars": [ { "value": "1.887" } ], "name": "Refractive index (n)" }, { "scalars": [ { "value": "deman-id-440nm band or complete absorption at 440nm and below, may also have lines at 618, 634, 685, 690nm" } ], "name": "absorption" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.859" }, { "value": "3.8-3.9" } ], "conditions": [ { "scalars": [ { "value": "calculated" }, { "value": "measured" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Isometric 4/m $\\bar{3}$ 2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Dumortierite", "title": "Wikipedia: Dumortierite" } ], "names": [ "Dumortierite" ], "chemicalFormula": "Al$_{7}$BO$_{3}$(SiO$_{4}$)$_{3}$O$_{3}$ or Al$_{6.5-7}$BO$_{3}$(SiO$_{4}$)$_{3}$(O,OH)$_{3}$", "properties": [ { "scalars": [ { "value": "Nesosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.AJ.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "11.77" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "20.21" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "4.71" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Blue, greenish-blue, violet-blue, pale blue, red" } ], "name": "Color" }, { "scalars": [ { "value": "As fibrous or columnar crystals, coarsely crystalline-intimate parallel aggregates of needles, massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic-Dipyramidal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Common on {110}, may produce trillings" } ], "name": "Twinning" }, { "scalars": [ { "value": "Distinct on {100}, poor on {110}, parting on {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Fibrous" } ], "name": "Fracture" }, { "scalars": [ { "value": "7-8.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-dull" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.3-3.4" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.659-1.678" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.684-1.691" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.686-1.692" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.027" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Strong, X=deep blue or violet, Y=yellow-red-violet or nearly colorless, Z=colorless or very pale blue" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Orthorhombic 2/m 2/m 2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Humite", "title": "Wikipedia: Humite" } ], "names": [ "Humite" ], "chemicalFormula": "(Mg,Fe)$_{7}$(SiO$_{4}$)$_{3}$(F,OH)$_{2}$.", "properties": [ { "scalars": [ { "value": "Nesosilicates" } ], "name": "Category" }, { "scalars": [ { "value": "09.AF.50" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "10.24" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "20.72" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "4.73" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "White, yellow, dark orange, brown" } ], "name": "Color" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Poor" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven-subconchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "6-6.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.607-1.643" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.619-1.653" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.639-1.675" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.0320" } ], "name": "Birefringence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.20-3.32" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2/m 2/m 2/m" } ], "name": "H-M symbol" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Datolite", "title": "Wikipedia: Datolite" } ], "names": [ "Datolite" ], "chemicalFormula": "CaBSiO$_{4}$(OH)", "properties": [ { "scalars": [ { "value": "Nesosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.AJ.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "9.62" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "7.6" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "4.84" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "90.15" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless or white, may be grayish, yellow, green, red, pink" } ], "name": "Color" }, { "scalars": [ { "value": "Crystal prismatic, short-tabular, Botryoidal or globular with columnar structure, granular-compact, cryp-crystalline" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal-uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5-5.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, rarely subresinous on fracture surface" } ], "name": "Luster" }, { "scalars": [ { "value": "2.96-3.00" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.626" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.653-1.654" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.670" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.044" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Fluoresces blue under SW UV" } ], "name": "fluorescence" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 2$_{1}$/c" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Ilvaite", "title": "Wikipedia: Ilvaite" } ], "names": [ "Ilvaite" ], "chemicalFormula": "Ca(Fe$^{2+}$)$_{2}$Fe$^{3+}$[OOHSi$_{2}$O$_{7}$]", "properties": [ { "scalars": [ { "value": "Sorosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.BE.07" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "5.5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "black" } ], "name": "Streak" }, { "scalars": [ { "value": "3.8-4.1" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Allanite", "title": "Wikipedia: Allanite" } ], "names": [ "Allanite" ], "chemicalFormula": "(Ce,Ca,Y,La)$_{2}$(Al,Fe$^{+3}$)$_{3}$(SiO$_{4}$)$_{3}$(OH)", "properties": [ { "scalars": [ { "value": "Sorosilicates" } ], "name": "Category" }, { "scalars": [ { "value": "09.BG.05b" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "8.927" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.761" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "10.15" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "114.77" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Brown-black" } ], "name": "Color" }, { "scalars": [ { "value": "Crystals tabular, prismatic-acicular, granular, massive, commonly metamict" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Polysynthetic, common on {100}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Imperfect-poor" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal-uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5.5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, resinous-submetallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Grey" } ], "name": "Streak" }, { "scalars": [ { "value": "3.5-4.2" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.715-1.791" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.718-1.815" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.733-1.822" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.018-0.031" } ], "name": "Birefringence" }, { "scalars": [ { "value": "X=pale olive-green, reddish brown,, Y=dark brown, brownish yellow,, Z=dark reddish brown, greenish brown" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "May be radioactive" } ], "name": "Other" }, { "scalars": [ { "value": "Monoclinic 2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Pectolite", "title": "Wikipedia: Pectolite" } ], "names": [ "Pectolite" ], "chemicalFormula": "NaCa$_{2}$Si$_{3}$O$_{8}$(OH)", "properties": [ { "scalars": [ { "value": "Silicate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "7.99" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "7.03" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "7.03" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "90.51" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\alpha$)" }, { "scalars": [ { "value": "95.21" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "102.53" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\gamma$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless, whitish, grayish, yellowish" } ], "name": "Color" }, { "scalars": [ { "value": "Tabular-acicular, radiating fibrous, spheroidal, or columnar, massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Triclinic Pinacoidal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Twin axis [010] with composition plane [100], common" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {100} and {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle,-ugh when compact" } ], "name": "Tenacity" }, { "scalars": [ { "value": "4.5-5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Silky, subvitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "2.84-2.90" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.594-1.610" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.603-1.614" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.631-1.642" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.037" } ], "name": "Birefringence" }, { "scalars": [ { "value": "$\\bar{1}$" } ], "name": "H-M symbol" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Hedenbergite", "title": "Wikipedia: Hedenbergite" } ], "names": [ "Hedenbergite" ], "chemicalFormula": "CaFeSi$_{2}$O$_{6}$", "properties": [ { "scalars": [ { "value": "Pyroxenes" } ], "name": "Category" }, { "scalars": [ { "value": "09.DA.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "248.09" } ], "units": "gm", "name": "Molecular weight" }, { "scalars": [ { "value": "brownish green, black" } ], "name": "Color" }, { "scalars": [ { "value": "massive, prismatic crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Good on {110}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Irregular" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5.5-6.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, dull" } ], "name": "Luster" }, { "scalars": [ { "value": "1.699-1.739" } ], "name": "Refractive index (n$\\alpha$)" }, { "scalars": [ { "value": "1.705-1.745" } ], "name": "Refractive index (n$\\beta$)" }, { "scalars": [ { "value": "1.728-1.757" } ], "name": "Refractive index (n$\\gamma$)" }, { "scalars": [ { "value": "0.029" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Weak" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "white, gray" } ], "name": "Streak" }, { "scalars": [ { "value": "3.56" } ], "conditions": [ { "scalars": [ { "value": "g/cm$^{3}$" } ], "name": "Note" } ], "name": "Density" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Heulandite", "title": "Wikipedia: Heulandite" } ], "names": [ "Heulandite" ], "chemicalFormula": "(Ca,Na)$_{2-3}$Al$_{3}$(Al,Si)$_{2}$Si$_{13}$O$_{36}$.12H$_{2}$O", "properties": [ { "scalars": [ { "value": "Zeolite" } ], "conditions": [ { "scalars": [ { "value": "tec-silicates" } ], "name": "Note" } ], "name": "Category" }, { "scalars": [ { "value": "09.GE.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "colorless, yellow, green, white, pale pink" } ], "name": "Color" }, { "scalars": [ { "value": "tabular, parallel aggregates" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "perfect basal" } ], "name": "Cleavage" }, { "scalars": [ { "value": "3.5-4" } ], "name": "Mohs scale 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"Unit cell ($\\beta$)" }, { "scalars": [ { "value": "297.42" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "Prismatic, drusy, massive-granular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Perfect in at least two directions" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-resinous" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.64-3.71" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.525" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.684" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.686" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.161" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Fluorescent dull yellow under LW and SW UV" } ], "name": "fluorescence" }, { "scalars": [ { "value": "Soluble in dilute HCl" } ], "name": "Solubility" }, { "scalars": [ { "value": "Monoclinic 2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Wavellite", "title": "Wikipedia: Wavellite" } ], "names": [ "Wavellite" ], "chemicalFormula": "Al$_{3}$(PO$_{4}$)$_{2}$(OH,F)$_{3}$.5H$_{2}$O", "properties": [ { "scalars": [ { "value": "Phosphate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.DC.50" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "9.621" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "17.363" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.994" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Green-yellowish-green and yellow, brown, white and colorless" } ], "name": "Color" }, { "scalars": [ { "value": "Spherical, radial aggregates, striated prisms, crusty-stalactitic" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "[110] perfect, [101] good, [010] distinct" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven-subconchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "3.5-4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-resinous, pearly" } ], "name": "Luster" }, { "scalars": [ { "value": "1.518-1.535" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.524-1.543" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.544-1.561" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.026" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Weak, X=greenish, Z=yellowish" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.36" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Infusable, swells and splits on heating" } ], "name": "Fusibility" }, { "scalars": [ { "value": "Insoluble" } ], "name": "Solubility" }, { "scalars": [ { "value": "2/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "Pcmn" } ], "name": "Space group" }, { "scalars": [ { "value": "Orthorhombic dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Mottramite", "title": "Wikipedia: Mottramite" } ], "names": [ "Mottramite" ], "chemicalFormula": "PbCu(VO$_{4}$)(OH)", "properties": [ { "scalars": [ { "value": "Vanadate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.BH.40" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "41.5.2.2" } ], "name": "Dana classification" }, { "scalars": [ { "value": "7.68" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "9.27" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.03" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "402.69" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "Encrustations, aggregates of plume-like forms and radial crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None observed" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Irregular/uneven, sub-conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3-3.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Greasy" } ], "name": "Luster" }, { "scalars": [ { "value": "Yellowish green" } ], "name": "Streak" }, { "scalars": [ { "value": "5.9" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.170(2)" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "2.260(2)" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "2.320(2)" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.150" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Visible X=Y=canary yellow-greenish yellow, Z=brownish yellow" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Readily soluble in acids" } ], "name": "Solubility" }, { "scalars": [ { "value": "Zinc" } ], "name": "impurities" }, { "scalars": [ { "value": "2/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "Pnam" } ], "name": "Space group" }, { "scalars": [ { "value": "Orthorhombic dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Fassaite", "title": "Wikipedia: Fassaite" } ], "names": [ "Fassaite" ], "chemicalFormula": "Ca(Mg,Fe,Al)(Si,Al)$_{2}$O$_{6}$", "properties": [ { "scalars": [ { "value": "light-dark green, black" } ], "name": "Color" }, { "scalars": [ { "value": "prismatic, short, plane" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "greenish-white" } ], "name": "Streak" }, { "scalars": [ { "value": "2.9-3.3" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Halotrichite", "title": "Wikipedia: Halotrichite" } ], "names": [ "Halotrichite" ], "chemicalFormula": "FeAl$_{2}$(SO$_{4}$)$_{4}$.22H$_{2}$O.", "properties": [ { "scalars": [ { "value": "Sulfate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "07.CB.85" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "20.51" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "24.29" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.18" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "100.99" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless-white, yellowish, greenish" } ], "name": "Color" }, { "scalars": [ { "value": "Acicular-asbestiform clusters, incrustations and efflorescences" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Poor on {010}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "1.5-2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.89" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.480" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.486" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.490" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.010" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Soluble in water" } ], "name": "Solubility" }, { "scalars": [ { "value": "Astringent taste" } ], "name": "Other" }, { "scalars": [ { "value": "2" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 2" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic sphenoidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Hydroxylapatite", "title": "Wikipedia: Hydroxylapatite" } ], "names": [ "Hydroxylapatite" ], "chemicalFormula": "Ca$_{5}$(PO$_{4}$)$_{3}$(OH)", "properties": [ { "scalars": [ { "value": "Phosphate mineral, Apatite group" } ], "name": "Category" }, { "scalars": [ { "value": "08.BN.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "9.41" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "6.88" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "502.31" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "Colorless, white, gray, yellow, yellowish green" } ], "name": "Color" }, { "scalars": [ { "value": "As tabular crystals and as stalagmites, nodules, in crystalline-massive crusts" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Hexagonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Poor on {0001} and {10$\\bar{1}$0}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-subresinous, earthy" } ], "name": "Luster" }, { "scalars": [ { "value": "1.651" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.644" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.007" } ], "name": "Birefringence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.14-3.21" }, { "value": "3.16" } ], "conditions": [ { "scalars": [ { "value": "measured" }, { "value": "calculated" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Hexagonal 6/m-dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Fichtelite", "title": "Wikipedia: Fichtelite" } ], "names": [ "Fichtelite" ], "chemicalFormula": "C$_{19}$H$_{34}$", "properties": [ { "scalars": [ { "value": "Organic mineral" } ], "name": "Category" }, { "scalars": [ { "value": "10.BA.05 Hydrocarbons" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "50.03.04.01" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Colorless, white, pale yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Elongated tabular crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic-Sphenoidal H-M Symbol (2) Space Group: P 2$_{1}$" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Good on {001} and {100}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "1" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Greasy" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "0.631 1.032" } ], "conditions": [ { "scalars": [ { "value": "calculated" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "44.2" } ], "units": "$^{\\circ}$C-45.0 $^{\\circ}$C", "name": "Melting point" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Braunite", "title": "Wikipedia: Braunite" } ], "names": [ "Braunite" ], "chemicalFormula": "Mn$^{2+}$Mn$^{3+}$$_{6}$[O$_{8}$SiO$_{4}$]", "properties": [ { "scalars": [ { "value": "Nesosilicates" } ], "name": "Category" }, { "scalars": [ { "value": "09.AG.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "7.5.1.3" } ], "name": "Dana classification" }, { "scalars": [ { "value": "brownish black, steel-grey" } ], "name": "Color" }, { "scalars": [ { "value": "tetragonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{112} perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "6-6.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "sub-metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "black" } ], "name": "Streak" }, { "scalars": [ { "value": "4.72-4.83" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Cohenite", "title": "Wikipedia: Cohenite" } ], "names": [ "Cohenite" ], "chemicalFormula": "(Fe,Ni,Co)$_{3}$C", "properties": [ { "scalars": [ { "value": "Native element mineral, carbide" } ], "name": "Category" }, { "scalars": [ { "value": "01.BA.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.09" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "6.74" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "4.52" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Tin-white, oxidizes-light bronze then golden yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Platy-needlelike crystals, also as rims on or in dendritic intergrowths with iron" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Good on {100}, {010}, and {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5.5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "7.2-7.65" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Strongly magnetic" } ], "name": "Other" }, { "scalars": [ { "value": "2/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "Pbnm" } ], "name": "Space group" }, { "scalars": [ { "value": "Orthorhombic dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Freibergite", "title": "Wikipedia: Freibergite" } ], "names": [ "Freibergite" ], "chemicalFormula": "Cu$_{12}$Sb$_{4}$S$_{13}$", "properties": [ { "scalars": [ { "value": "Sulfosalt minerals" } ], "name": "Category" }, { "scalars": [ { "value": "1929.46" } ], "units": "gm", "name": "Molecular weight" }, { "scalars": [ { "value": "02.GB.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Steel gray-Black" } ], "name": "Color" }, { "scalars": [ { "value": "massive-well formed crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Cubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "3.5-4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "reddish black" } ], "name": "Streak" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Altaite", "title": "Wikipedia: Altaite" } ], "names": [ "Altaite" ], "chemicalFormula": "PbTe", "properties": [ { "scalars": [ { "value": "Telluride mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.CD.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "334.8" } ], "units": "g/mol", "name": "Molecular weight" }, { "scalars": [ { "value": "tin white-yellowish white, tarnishing-bronze yellow" } ], "name": "Color" }, { "scalars": [ { "value": "include cubic and octahedral crystals, but much more commonly found in massive and granular forms" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Isometric" } ], "name": "Crystal system" }, { "scalars": [ { "value": "perfect in three directions forming cubes" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "2.5-3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Black" } ], "name": "Streak" }, { "scalars": [ { "value": "8.2-8.3" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Saponite", "title": "Wikipedia: Saponite" } ], "names": [ "Saponite" ], "chemicalFormula": "Ca$_{0.25}$(Mg,Fe)$_{3}$((Si,Al)$_{4}$O$_{10}$)(OH)$_{2}$.n(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Phyllosilicates, Smectite group" } ], "name": "Category" }, { "scalars": [ { "value": "9.EC.45" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.3" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "9.14" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "16.9" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "97" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "White, yellow, red, green, blue" } ], "name": "Color" }, { "scalars": [ { "value": "Granular-Massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{001} perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle dry, plastic when hydrated" } ], "name": "Tenacity" }, { "scalars": [ { "value": "1.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Greasy, dull" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.24-2.30" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.479-1.490" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.510-1.525" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.511-1.527" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.032-0.037" } ], "name": "Birefringence" }, { "scalars": [ { "value": "X=colorless, light yellow-green-brown, Y=Z=colorless, greenish brown-dark brown" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "C 2/m" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Aurostibite", "title": "Wikipedia: Aurostibite" } ], "names": [ "Aurostibite" ], "chemicalFormula": "AuSb$_{2}$", "properties": [ { "scalars": [ { "value": "Sulfide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "440.47" } ], "units": "g/mol", "name": "Molecular weight" }, { "scalars": [ { "value": "02.EB.05a" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "White-grey with bornite-like tarnish" } ], "name": "Color" }, { "scalars": [ { "value": "Isometric" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Indistinct" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "9.98" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Caledonite", "title": "Wikipedia: Caledonite" } ], "names": [ "Caledonite" ], "chemicalFormula": "Cu$_{2}$Pb$_{5}$(OH)$_{6}$CO$_{3}$(SO$_{4}$)$_{3}$", "properties": [ { "scalars": [ { "value": "Sulfate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "20.089(7)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "7.146(3)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.56" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "07.BC.50" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Blue, green" } ], "name": "Color" }, { "scalars": [ { "value": "Typically striated prismatic or tabular crystals, radial aggregates" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "[001] perfect, [100] distinct" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2.5-3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.818(3)" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.866(3)" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.909(3)" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.091" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Weak" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Green-white, blue-green" } ], "name": "Streak" }, { "scalars": [ { "value": "5.6-5.8" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Pmn2$_{1}$" } ], "name": "Space group" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Gahnite", "title": "Wikipedia: Gahnite" } ], "names": [ "Gahnite" ], "chemicalFormula": "ZnAl$_{2}$O$_{4}$", "properties": [ { "scalars": [ { "value": "Oxide minerals, Spinel group, Spinel structural group" } ], "name": "Category" }, { "scalars": [ { "value": "04.BB.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Dark green, bluish green, blue-indigo, yellow-brown" } ], "name": "Color" }, { "scalars": [ { "value": "Typically octahedra, rarely as dodecahedra also assive-granular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Isometric" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Common on [111] produces striations" } ], "name": "Twinning" }, { "scalars": [ { "value": "Indistinct parting on [111]" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal, uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "7.5-8.0" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.79-1.80" } ], "name": "Refractive index (n)" }, { "scalars": [ { "value": "Grey" } ], "name": "Streak" }, { "scalars": [ { "value": "4.38-4.60" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Painite", "title": "Wikipedia: Painite" } ], "names": [ "Painite" ], "chemicalFormula": "CaZrAl$_{9}$O$_{15}$(BO$_{3}$)", "properties": [ { "scalars": [ { "value": "Borates" } ], "name": "Category" }, { "scalars": [ { "value": "06.AB.85" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "7.5.2.1" } ], "name": "Dana classification" }, { "scalars": [ { "value": "8.72" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8.46" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Red, brownish, orange-red" } ], "name": "Color" }, { "scalars": [ { "value": "Elongated crystals, pseudo-orthorhombic" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Hexagonal 6/m, although earlier reported as hexagonal 6" } ], "name": "Crystal system" }, { "scalars": [ { "value": "8" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.8159" } ], "name": "Refractive index (n$_{o}$)" }, { "scalars": [ { "value": "1.7875" } ], "name": "Refractive index (n$_{e}$)" }, { "scalars": [ { "value": "Ruby-red parallel-[0001], pale brownish orange or pale" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "4.01" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Insoluble in acids" } ], "name": "Solubility" }, { "scalars": [ { "value": "Not radioactive" } ], "name": "Other" }, { "scalars": [ { "value": "Hexagonal 6/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Geocronite", "title": "Wikipedia: Geocronite" } ], "names": [ "Geocronite" ], "chemicalFormula": "Pb$_{14}$(Sb, As)$_{6}$S$_{23}$", "properties": [ { "scalars": [ { "value": "Sulfosalt minerals" } ], "name": "Category" }, { "scalars": [ { "value": "02.JB.30a" } ], "name": "Strunz classification" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Gmelinite", "title": "Wikipedia: Gmelinite" } ], "names": [ "Gmelinite" ], "chemicalFormula": "Na$_{4}$(Si$_{8}$Al$_{4}$)O$_{24}$.11H$_{2}$O", "properties": [ { "scalars": [ { "value": "Zeolites" } ], "name": "Category" }, { "scalars": [ { "value": "2000.77" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "09.GD.05, 8/J.26-50" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "77.1.2.6" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Colorless, white, yellow, orange, pale green, pink, red, brown and grey" } ], "name": "Color" }, { "scalars": [ { "value": "Hexagonal plates, or short prisms, showing hexagonal dipyramids, pyramids and basal pinacoid. {10$\\bar{1}$0}, {10$\\bar{1}$1} and {0001} dominant. May also be tabular or rhombohedral. Crystals are striated parallel-" } ], "conditions": [ { "scalars": [ { "value": "0001" } ], "name": "Note" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Hexagonal 6/m 2/m 2/m Dihexagonal Dipyramidal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Interpenetrant twins commonRoberts, Campbell and Rapp Encyclopedia of Minerals, 2nd edition" } ], "conditions": [ { "scalars": [ { "value": "1990" } ], "name": "Note" } ], "name": "Twinning" }, { "scalars": [ { "value": "Good on {10$\\bar{1}$0}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "4.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Dull-vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.476-1.494" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.474-1.480" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.002-0.014" } ], "name": "Birefringence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.04-2.17" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Soluble in cold 10% HCl." } ], "name": "Solubility" }, { "scalars": [ { "value": "Piezoelectric. Barely detectable radioactivity. As with all zeolites, water is released on heating, and almost all has been expelled by 400 $^{\\circ}$C." } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Krennerite", "title": "Wikipedia: Krennerite" } ], "names": [ "Krennerite" ], "chemicalFormula": "AuTe$_{2}$", "properties": [ { "scalars": [ { "value": "Telluride mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.EA.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "White-blackish yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Massive-crystalline" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic-Pyramidal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "weak" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "None" } ], "name": "fluorescence" }, { "scalars": [ { "value": "greenish grey" } ], "name": "Streak" }, { "scalars": [ { "value": "8.53" } ], "name": "Density" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Sanidine", "title": "Wikipedia: Sanidine" } ], "names": [ "Sanidine" ], "chemicalFormula": "K(AlSi$_{3}$O$_{8}$)", "properties": [ { "scalars": [ { "value": "Feldspar" } ], "name": "Category" }, { "scalars": [ { "value": "76.01.01.02" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Colorless-white" } ], "name": "Color" }, { "scalars": [ { "value": "Tabular crystals, may be acicular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic-Prismatic H-M Symbol (2/m) Space Group: C 2/m" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Carlsbad twinning common" } ], "name": "Twinning" }, { "scalars": [ { "value": "{001} perfect, {010} good" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, pearly on cleavage" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.52" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.518-1.525" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.523-1.530" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.525-1.531" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.007" } ], "name": "Birefringence" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Sunstone", "title": "Wikipedia: Sunstone" } ], "names": [ "Sunstone" ], "chemicalFormula": "(Ca,Na)((Al,Si)$_{2}$Si$_{2}$O$_{8}$)", "properties": [ { "scalars": [ { "value": "Mineral variety" } ], "name": "Category" }, { "scalars": [ { "value": "Colorless, yellow, red, green, blue, and copper shiller" } ], "name": "Color" }, { "scalars": [ { "value": "Euhedral crystals, granular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Triclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Lamellar" } ], "name": "Twinning" }, { "scalars": [ { "value": "001" } ], "name": "Cleavage" }, { "scalars": [ { "value": "1.525-1.58" } ], "name": "Refractive index" }, { "scalars": [ { "value": "2.64-2.66" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Illite", "title": "Wikipedia: Illite" } ], "names": [ "Illite" ], "chemicalFormula": "(K,H$_{3}$O)(Al,Mg,Fe)$_{2}$(Si,Al)$_{4}$O$_{10}$[(OH)$_{2}$,(H$_{2}$O)]", "properties": [ { "scalars": [ { "value": "Mica-Phyllosilicates" } ], "name": "Category" }, { "scalars": [ { "value": "09.EC.60" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "71.02.02d.02" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Grey-white-silvery-white, greenish-gray" } ], "name": "Color" }, { "scalars": [ { "value": "Micaceous aggregates" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic-Prismatic, 2/m" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{001} Perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "1-2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Pearly-dull" } ], "name": "Luster" }, { "scalars": [ { "value": "white" } ], "name": "Streak" }, { "scalars": [ { "value": "2.6-2.9" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.535-1.570" } ], "name": "Refractive index (n$\\alpha$)" }, { "scalars": [ { "value": "1.555-1.600" } ], "name": "Refractive index (n$\\beta$)" }, { "scalars": [ { "value": "1.565-1.605" } ], "name": "Refractive index (n$\\gamma$)" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Tusionite", "title": "Wikipedia: Tusionite" } ], "names": [ "Tusionite" ], "chemicalFormula": "MnSn(BO$_{3}$)$_{2}$", "properties": [ { "scalars": [ { "value": "Borate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "06.AA.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Colorless, light yellow-yellow brown" } ], "name": "Color" }, { "scalars": [ { "value": "Thin platy crystals in rosettes" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "[001] Perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.854" } ], "name": "Refractive index (n$\\omega$)" }, { "scalars": [ { "value": "1.752" } ], "name": "Refractive index (n$\\epsilon$)" }, { "scalars": [ { "value": "0.102" } ], "name": "Birefringence" }, { "scalars": [ { "value": "white" } ], "name": "Streak" }, { "scalars": [ { "value": "4.73" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Aegirine", "title": "Wikipedia: Aegirine" } ], "names": [ "Aegirine" ], "chemicalFormula": "NaFe$^{3+}$[ Si$_{2}$O$_{6}$]", "properties": [ { "scalars": [ { "value": "Silicate mineral, Pyroxene" } ], "name": "Category" }, { "scalars": [ { "value": "09.DA.25" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "9.658" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8.795" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.294" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "107.42" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Dark Green, Greenish Black" } ], "name": "Color" }, { "scalars": [ { "value": "Prismatic crystals may be in sprays of acicular crystals, fibrous, in radial concretions" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic Prismatic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Simple and lamellar twinning common on {100}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Good on {110}, (110) ^ (1$\\bar{1}$0) $\\in$87$^{\\circ}$, parting on {100}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-slightly resinous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.720-1.778" } ], "name": "Refractive index (n$\\alpha$)" }, { "scalars": [ { "value": "1.740-1.819" } ], "name": "Refractive index (n$\\beta$)" }, { "scalars": [ { "value": "1.757-1.839" } ], "name": "Refractive index (n$\\gamma$)" }, { "scalars": [ { "value": "0.037-0.061" } ], "name": "Birefringence" }, { "scalars": [ { "value": "X=emerald green, deep green, Y=grass-green, deep green, yellow, Z=brownish green, green, yellowish brown, yellow" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Yellowish-grey" } ], "name": "Streak" }, { "scalars": [ { "value": "3.50-3.60" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Monoclinic 2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Ludwigite", "title": "Wikipedia: Ludwigite" } ], "names": [ "Ludwigite" ], "chemicalFormula": "Mg$_{2}$Fe$^{3+}$BO$_{5}$", "properties": [ { "scalars": [ { "value": "Borate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "06.AB.30" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "9.26" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "12.26" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "3.05" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Pitch-black, olive-black" } ], "name": "Color" }, { "scalars": [ { "value": "Massive-fibrous commonly in fanlike-felted aggregates" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "[001] Perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle-Conchoidal-Very brittle fracture producing small, conchoidal fragments." } ], "name": "Fracture" }, { "scalars": [ { "value": "5.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Silky-submetallic" } ], "name": "Luster" }, { "scalars": [ { "value": "1.830-1.850" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.830-1.850" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.940-2.020" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.110-0.170" } ], "name": "Birefringence" }, { "scalars": [ { "value": "X=Y=dark green, Z=dark reddish brown" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "greenish black" } ], "name": "Streak" }, { "scalars": [ { "value": "3.6-3.8" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Slowly soluble in acid" } ], "name": "Solubility" }, { "scalars": [ { "value": "Pbam" } ], "name": "Orthorhombic 2/m 2/m 2/m Space Group" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Rickardite", "title": "Wikipedia: Rickardite" } ], "names": [ "Rickardite" ], "chemicalFormula": "Cu$_{7}$Te$_{5}$", "properties": [ { "scalars": [ { "value": "Telluride mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.BA.30" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Red-violet , darkens" } ], "conditions": [ { "scalars": [ { "value": "fresh" } ], "name": "Note" } ], "name": "Color" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "3.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Red" } ], "name": "Streak" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Harmotome", "title": "Wikipedia: Harmotome" } ], "names": [ "Harmotome" ], "chemicalFormula": "(Ba$_{0.5}$,Ca$_{0.5}$,Na,K)$_{5}$Al$_{5}$,Si$_{11}$O$_{32}$.12(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "zeolites" } ], "name": "Category" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Hauerite", "title": "Wikipedia: Hauerite" } ], "names": [ "Hauerite" ], "chemicalFormula": "MnS$_{2}$", "properties": [ { "scalars": [ { "value": "Sulfide mineral, pyrite group" } ], "name": "Category" }, { "scalars": [ { "value": "02.EB.05a" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "6.107" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Reddish brown or brownish black" } ], "name": "Color" }, { "scalars": [ { "value": "Octahedral crystals and globular aggregates" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Cubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{100} Perfect, {010} Perfect, Perfect on {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven-subconchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic-adamantine" } ], "name": "Luster" }, { "scalars": [ { "value": "Reddish brown" } ], "name": "Streak" }, { "scalars": [ { "value": "3.463" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.69" } ], "name": "Refractive index (n)" }, { "scalars": [ { "value": "2/m$\\bar{3}$ diploidal" } ], "name": "H-M symbol" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Meteoric_iron", "title": "Wikipedia: Meteoric iron" } ], "names": [ "Meteoric iron" ], "chemicalFormula": "Fe and Ni in different ratios", "properties": [ { "scalars": [ { "value": "Native element mineral" } ], "name": "Category" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Different structures" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Weddellite", "title": "Wikipedia: Weddellite" } ], "names": [ "Weddellite" ], "chemicalFormula": "CaC$_{2}$O$_{4}$.2H$_{2}$O", "properties": [ { "scalars": [ { "value": "Organic mineral" } ], "name": "Category" }, { "scalars": [ { "value": "12.371" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "7.357" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "10.AB.40" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Colorless-white, may be yellowish brown-brown from impurities" } ], "name": "Color" }, { "scalars": [ { "value": "Isolated crystals, may be corroded" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Tetragonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Single or multiple" } ], "name": "Twinning" }, { "scalars": [ { "value": "Good on {010}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.523" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.544" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.021" } ], "name": "Birefringence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "1.94" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Dehydrates on air exposure" } ], "name": "Other" }, { "scalars": [ { "value": "4/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "I 4/m" } ], "name": "Space group" }, { "scalars": [ { "value": "Tetragonal dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Maucherite", "title": "Wikipedia: Maucherite" } ], "names": [ "Maucherite" ], "chemicalFormula": "Ni$_{11}$As$_{8}$", "properties": [ { "scalars": [ { "value": "Arsenide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.AB.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "grey-reddish silver white" } ], "name": "Color" }, { "scalars": [ { "value": "tetragonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "4.5-5.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "grayish black" } ], "name": "Streak" }, { "scalars": [ { "value": "6.9-7.3" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Herderite", "title": "Wikipedia: Herderite" } ], "names": [ "Herderite" ], "chemicalFormula": "CaBe(PO$_{4}$)(F,OH)", "properties": [ { "scalars": [ { "value": "Phosphate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "08.BA.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "4.81" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "7.7" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "9.82" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "90.1" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Occurs as prismatic tabular crystals, pseudo-orthorhombic or pseudo-hexagonal, fibrous botryoidal-spheroidal aggregates" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "On {100} or {001} as fishtail contact" } ], "name": "Twinning" }, { "scalars": [ { "value": "Indistinct on {110}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Subconchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "5-5.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "3.02" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.556-1.592" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.578-1.610" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.589-1.620" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.033" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Fluoresces violet under UV, cathodoluminesces and phosphoresces pinkish orange under X-rays" } ], "name": "fluorescence" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 2$_{1}$/a" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Brochantite", "title": "Wikipedia: Brochantite" } ], "names": [ "Brochantite" ], "chemicalFormula": "Cu$_{4}$SO$_{4}$(OH)$_{6}$", "properties": [ { "scalars": [ { "value": "Sulfate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "07.BB.25" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Green, emerald green, or black" } ], "name": "Color" }, { "scalars": [ { "value": "Prismatic crystals, acicular needle-like crystals, druse" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect [100]" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal-brittle" } ], "name": "Fracture" }, { "scalars": [ { "value": "3.5-4.0" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-pearly" } ], "name": "Luster" }, { "scalars": [ { "value": "1.728" } ], "name": "Refractive index (n$\\alpha$)" }, { "scalars": [ { "value": "1.771" } ], "name": "Refractive index (n$\\beta$)" }, { "scalars": [ { "value": "1.800" } ], "name": "Refractive index (n$\\gamma$)" }, { "scalars": [ { "value": "0.072" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Weak" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Pale green" } ], "name": "Streak" }, { "scalars": [ { "value": "3.97" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Hydromagnesite", "title": "Wikipedia: Hydromagnesite" } ], "names": [ "Hydromagnesite" ], "chemicalFormula": "Mg$_{5}$(CO$_{3}$)$_{4}$(OH)$_{2}$.4H$_{2}$O", "properties": [ { "scalars": [ { "value": "Carbonate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "05.DA.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "16b.07.01.01" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Colorless, white" } ], "name": "Color" }, { "scalars": [ { "value": "Acicular and as encrustations" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic-Prismatic (pseudo-orthorhombic)" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Polysynthetic lamellar on {100}" } ], "name": "Twinning" }, { "scalars": [ { "value": "{010} Perfect, {100} Distinct" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, silky, pearly, earthy" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.16-2.2" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.523" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.527" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.545" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.022" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Fluorescent, short UV=green, long UV=bluish white." } ], "name": "fluorescence" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Native_copper", "title": "Wikipedia: Native copper" } ], "names": [ "Native copper" ], "chemicalFormula": "Cu", "properties": [ { "scalars": [ { "value": "Native metal" } ], "name": "Category" }, { "scalars": [ { "value": "01.AA.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "1.1.1.3" } ], "name": "Dana classification" }, { "scalars": [ { "value": "3.615 =4" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "Pale rose on fresh surface, quickly darkens-copper-red, in reflected light, pale rose" } ], "name": "Color" }, { "scalars": [ { "value": "As cubes, dodecahedra, and as tetrahexahedra, rarely as octahedra and complex combinations. Commonly flattened on {111}, elongated along [001]. Also as irregular dis-rtions, in twisted, wirelike shapes, filiform, arborescent, massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "cubic Hexoctahedral" } ], "name": "Crystal system" }, { "scalars": [ { "value": "On {111}-produce simple contact and penetration twins and cyclic groups" } ], "name": "Twinning" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Hackly-jagged" } ], "name": "Fracture" }, { "scalars": [ { "value": "Highly malleable and ductile" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2.5-3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Copper-red" } ], "name": "Streak" }, { "scalars": [ { "value": "8.95" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Soluble in nitric acid" } ], "name": "Solubility" }, { "scalars": [ { "value": "Tarnishes-black or green in air." } ], "name": "Other" }, { "scalars": [ { "value": "Isometric 4/m $\\bar{3}$ 2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Weissite", "title": "Wikipedia: Weissite" } ], "names": [ "Weissite" ], "chemicalFormula": "Cu$_{2-x}$Te", "properties": [ { "scalars": [ { "value": "Telluride mineral" } ], "name": "Category" }, { "scalars": [ { "value": "2.BA.30" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "12.54" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "21.71" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "15" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Bluish black-black with tarnish" } ], "name": "Color" }, { "scalars": [ { "value": "Lens shaped masses" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Hexagonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Black" } ], "name": "Streak" }, { "scalars": [ { "value": "6" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Distinct" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Distinct" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "6/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 6/mmm" } ], "name": "Space group" }, { "scalars": [ { "value": "Hexagonal dihexagonal dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Trevorite", "title": "Wikipedia: Trevorite" } ], "names": [ "Trevorite" ], "chemicalFormula": "NiFe$^{3+}$$_{2}$O$_{4}$", "properties": [ { "scalars": [ { "value": "Oxide minerals, Spinel group, Spinel structural group" } ], "name": "Category" }, { "scalars": [ { "value": "04.BB.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "7.2.2.5" } ], "name": "Dana classification" }, { "scalars": [ { "value": "8.41" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Black, greenish hue" } ], "name": "Color" }, { "scalars": [ { "value": "Granular-massive, rare as minute octahedra" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Cubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic-sub-metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Brown" } ], "name": "Streak" }, { "scalars": [ { "value": "5.164" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.41" } ], "name": "Refractive index (n)" }, { "scalars": [ { "value": "Highly magnetic" } ], "name": "Other" }, { "scalars": [ { "value": "4/m$\\bar{3}$2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "F d3m" } ], "name": "Space group" }, { "scalars": [ { "value": "Isometric hexoctahedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Elbaite", "title": "Wikipedia: Elbaite" } ], "names": [ "Elbaite" ], "chemicalFormula": "Na(Li$_{1.5}$Al$_{1.5}$)Al$_{6}$Si$_{6}$O$_{18}$(BO$_{3}$)$_{3}$(OH)$_{4}$", "properties": [ { "scalars": [ { "value": "Silicate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "09.CK.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Green, red-pink, blue, orange, yellow, colorless, multicolored" } ], "name": "Color" }, { "scalars": [ { "value": "Prismatic, striated" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Poor/indistinct on {1120} and {1011}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Sub-conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "7.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.635-1.650" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.615-1.632" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.020" } ], "name": "Birefringence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.9-3.2" } ], "name": "Density" }, { "scalars": [ { "value": "piezoelectric and pyroelectric" } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Triplite", "title": "Wikipedia: Triplite" } ], "names": [ "Triplite" ], "chemicalFormula": "(Mn,Fe)$_{2}$(PO$_{4}$)(F,OH)", "properties": [ { "scalars": [ { "value": "Phosphate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.BB.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "11.97" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "6.52" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "10.09" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "105.62" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Chestnut-reddish brown, flesh-red, salmon-pink" } ], "name": "Color" }, { "scalars": [ { "value": "Prismatic, massive-nodular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Good on {001}, fair on {010}, poor on {100}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven-subconchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "5-5.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-resinous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.643-1.684" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.647-1.693" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.668-1.703" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "Distinct, yellow-brown-reddish brown" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White-brown" } ], "name": "Streak" }, { "scalars": [ { "value": "3.5-3.9" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Monoclinic 2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Jamesonite", "title": "Wikipedia: Jamesonite" } ], "names": [ "Jamesonite" ], "chemicalFormula": "Pb$_{4}$FeSb$_{6}$S$_{14}$", "properties": [ { "scalars": [ { "value": "Sulfosalt" } ], "name": "Category" }, { "scalars": [ { "value": "02.HB.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "gray-black" } ], "name": "Color" }, { "scalars": [ { "value": "monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{001} good, also possibly {010} and {120}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "gray-black" } ], "name": "Streak" }, { "scalars": [ { "value": "5.63" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Lanarkite", "title": "Wikipedia: Lanarkite" } ], "names": [ "Lanarkite" ], "chemicalFormula": "Pb$_{2}$(SO$_{4}$)O", "properties": [ { "scalars": [ { "value": "Sulfate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "07.BD.40" } ], "name": "Strunz classification" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Siderotil", "title": "Wikipedia: Siderotil" } ], "names": [ "Siderotil" ], "chemicalFormula": "Fe$^{2+}$SO$_{4}$.5H$_{2}$O", "properties": [ { "scalars": [ { "value": "Sulfate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "07.CB.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "6.26" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "10.63" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.06" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "97.25" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\alpha$)" }, { "scalars": [ { "value": "109.67" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "75" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\gamma$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Pale green, yellowish, white" } ], "name": "Color" }, { "scalars": [ { "value": "Fibrous-powdery, rarely as acicular crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Triclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous or silky" } ], "name": "Luster" }, { "scalars": [ { "value": "2.1-2.2" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.513-1.515" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.525-1.526" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.534-1.536" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.021" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Soluble in water" } ], "name": "Solubility" }, { "scalars": [ { "value": "Triclinic $\\bar{1}$" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Oldhamite", "title": "Wikipedia: Oldhamite" } ], "names": [ "Oldhamite" ], "chemicalFormula": "(Ca, Mg)S", "properties": [ { "scalars": [ { "value": "Sulfide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "2.CD.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.69" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Pale chestnut-brown" } ], "name": "Color" }, { "scalars": [ { "value": "Crystal nodules, anhedral grains" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Cubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Good on {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Sub-metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "2.58" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.137" } ], "name": "Refractive index (n)" }, { "scalars": [ { "value": "2450 $^{\\circ}$C" } ], "name": "Fusibility" }, { "scalars": [ { "value": "4/m$\\bar{3}$2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "F m3m" } ], "name": "Space group" }, { "scalars": [ { "value": "Isometric hexoctahedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Molybdite", "title": "Wikipedia: Molybdite" } ], "names": [ "Molybdite" ], "chemicalFormula": "MoO$_{3}$", "properties": [ { "scalars": [ { "value": "4.EA.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "3.96" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "13.85" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "3.69" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Light greenish yellow-nearly colorless" } ], "name": "Color" }, { "scalars": [ { "value": "Flattened needles or thin plates may occur in aggregates" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {100}, district on {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Flexible" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3-4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "4.72" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "High" } ], "name": "Birefringence" }, { "scalars": [ { "value": "2/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "Pbnm" } ], "name": "Space group" }, { "scalars": [ { "value": "Orthorhombic dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Lanthanite", "title": "Wikipedia: Lanthanite" } ], "names": [ "Lanthanite" ], "chemicalFormula": "(''REE'')$_{2}$(CO$_{3}$)$_{3}$.8(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Carbonate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "05.CC.25" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "(La):15.04.02.01, (Nd): 15.04.02.02, (Ce): 15.04.02.03" } ], "name": "Dana classification" }, { "scalars": [ { "value": "9.476(4)-9.483(6)" } ], "units": "$\\AA$", "name": "Unit cell (''a'')" }, { "scalars": [ { "value": "16.940(8)-16.938(11)" } ], "units": "$\\AA$", "name": "Unit cell (''b'')" }, { "scalars": [ { "value": "8.942(4)-8.965(3)" } ], "units": "$\\AA$", "name": "Unit cell (''c'')" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Pale pink-purple" } ], "name": "Color" }, { "scalars": [ { "value": "Platy" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Common on {101}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Micaceous, perfect on {101}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Sectile" } ], "name": "Tenacity" }, { "scalars": [ { "value": "~2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-pearly" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.78-2.84" }, { "value": "2.79-2.816" } ], "conditions": [ { "scalars": [ { "value": "measured" }, { "value": "calculated" } ], "name": "Note" } ], "name": "Density" }, { "scalars": [ { "value": "2/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "''Pbnb''" } ], "name": "Space group" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Annabergite", "title": "Wikipedia: Annabergite" } ], "names": [ "Annabergite" ], "chemicalFormula": "Ni$_{3}$(AsO$_{4}$)$_{2}$.8H$_{2}$O", "properties": [ { "scalars": [ { "value": "Arsenate minerals, Vivianite group" } ], "name": "Category" }, { "scalars": [ { "value": "08.CE.40" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "10.179(2)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "13.309(3)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "4.725(1)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "105(1)" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Apple-green, pale green, pale rose or pale pink, white, gray, may be zoned" } ], "name": "Color" }, { "scalars": [ { "value": "Usually as fibrous veinlets, crystalline crusts, or earthy, rare as well formed crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {010}, indistinct on {100} and {102}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Sectile" } ], "name": "Tenacity" }, { "scalars": [ { "value": "1.5-2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Subadamantine, pearly on cleavages, may be dull or earthy" } ], "name": "Luster" }, { "scalars": [ { "value": "Pale green-white" } ], "name": "Streak" }, { "scalars": [ { "value": "3.07" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.622" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.658" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.687" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.065" } ], "name": "Birefringence" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Laumontite", "title": "Wikipedia: Laumontite" } ], "names": [ "Laumontite" ], "chemicalFormula": "Ni$_{3}$(AsO$_{4}$)$_{2}$.8H$_{2}$O", "properties": [ { "scalars": [ { "value": "Tec-silicate-Zeolite group" } ], "name": "Category" }, { "scalars": [ { "value": "White, colorless, yellowish, brownish," } ], "name": "Color" }, { "scalars": [ { "value": "Perfect, two directions" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "4" } ], "name": "Mohs scale hardness" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Laurite", "title": "Wikipedia: Laurite" } ], "names": [ "Laurite" ], "chemicalFormula": "RuS$_{2}$", "properties": [ { "scalars": [ { "value": "Sulfide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "2.EB.05a" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.61" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Iron-black, white-gray or bluish in polished section" } ], "name": "Color" }, { "scalars": [ { "value": "As octahedral, cubic, and pyri-hedral crystals or as rounded grains and inclusions" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Cubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {111}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Subconchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "7.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Dark gray" } ], "name": "Streak" }, { "scalars": [ { "value": "6.43" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2/m$\\bar{3}$" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "Pa3" } ], "name": "Space group" }, { "scalars": [ { "value": "Isometric diploidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Lazulite", "title": "Wikipedia: Lazulite" } ], "names": [ "Lazulite" ], "chemicalFormula": "(Mg,Fe$^{2+}$)Al$_{2}$(PO$_{4}$)$_{2}$(OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Phosphate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "08.BB.40" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "7.144(1)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "7.278(1)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "7.228(1)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "120.5(1)" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Azure-blue, sky-blue, bluish white, yellow-green, blue-green, rarely green" } ], "name": "Color" }, { "scalars": [ { "value": "Tabular, acute-stubby bipyramidal crystals, granular, massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Common by several twin laws" } ], "name": "Twinning" }, { "scalars": [ { "value": "Poor-good on {110}, indistinct on {101}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven, splintery" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5.5-6.0" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.122-3.240" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.604-1.626" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.626-1.654" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.637-1.663" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.033-0.037" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Strong: X=colorless, Y=blue, Z=darker blue" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Infusible" } ], "name": "Fusibility" }, { "scalars": [ { "value": "Insoluble" } ], "name": "Solubility" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 2$_{1}$/c" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Leadhillite", "title": "Wikipedia: Leadhillite" } ], "names": [ "Leadhillite" ], "chemicalFormula": "Carbonate mineralsformula = Pb$_{4}$SO$_{4}$(CO$_{3}$)$_{2}$(OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Carbonate mineralsformula=Pb$_{4}$SO$_{4}$$_{2}$(OH)$_{2}$" } ], "conditions": [ { "scalars": [ { "value": "CO$_{3}$" } ], "name": "Note" } ], "name": "Category" }, { "scalars": [ { "value": "05.BF.40" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "17.1.2.1" } ], "name": "Dana classification" }, { "scalars": [ { "value": "9.11" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "20.82" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "11.59" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "90.46" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "1078.90" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "Usually pseudo-hexagonal, thin-thick tabular {001} with hexagonal outline" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Commonly twinned, twin plane {140}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Irregular-conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "sectile" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2.5-3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine, resinous, pearly" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "6.55" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.87" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "2.00" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "2.01" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.140" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Yellowish fluorescence in LW or SW UV" } ], "name": "fluorescence" }, { "scalars": [ { "value": "Soluble in HNO$_{3}$" } ], "name": "Solubility" }, { "scalars": [ { "value": "Not radioactive" } ], "name": "Other" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P2$_{1}$/a" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Loellingite", "title": "Wikipedia: Loellingite" } ], "names": [ "Loellingite" ], "chemicalFormula": "FeAs$_{2}$", "properties": [ { "scalars": [ { "value": "Arsenide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.EB.15a" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.16" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.93" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "3.05" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Seel grey-silvery white" } ], "name": "Color" }, { "scalars": [ { "value": "Prismatic-pyramidal crystals, massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "On {001}, possibly trillings, polysynthetic on {101}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Rare, distinct on {010}, {101}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "5-5.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Grayish black" } ], "name": "Streak" }, { "scalars": [ { "value": "7.1-7.5" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Orthorhombic (2/m 2/m 2/m)-dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Liroconite", "title": "Wikipedia: Liroconite" } ], "names": [ "Liroconite" ], "chemicalFormula": "Cu$_{2}$Al[(OH)$_{4}$AsO$_{4}$].4(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Arsenate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.DF.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "12.66" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "7.57" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "9.89" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "91.25" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Bright blue-green" } ], "name": "Color" }, { "scalars": [ { "value": "Typically as striated flattened octahedral or lenticular crystals, also massive-granular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Indistinct on {110} and {011}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Irregular/uneven, conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "2-2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-resinous" } ], "name": "Luster" }, { "scalars": [ { "value": "Light blue" } ], "name": "Streak" }, { "scalars": [ { "value": "2.9-3" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.612" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.652" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.675" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.063" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Monoclinic prismatic (2/m)" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Lithiophilite", "title": "Wikipedia: Lithiophilite" } ], "names": [ "Lithiophilite" ], "chemicalFormula": "LiMnPO$_{4}$", "properties": [ { "scalars": [ { "value": "Phosphate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.AB.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Clove-brown, yellowish brown, honey-yellow, salmon-pink, blue-gray, gray" } ], "name": "Color" }, { "scalars": [ { "value": "Prismatic-crystals shaped like slender prisms" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic (2/m 2/m 2/m) Space Group: Pmnb" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Rare contact twins on {130}" } ], "name": "Twinning" }, { "scalars": [ { "value": "[100] perfect, [110] and [011] poor" } ], "name": "Cleavage" }, { "scalars": [ { "value": "uneven-conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "4-5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-subresinous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.669" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.673" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.682" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.0130" } ], "name": "Birefringence" }, { "scalars": [ { "value": "None-weak" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White-grayish white" } ], "name": "Streak" }, { "scalars": [ { "value": "3.445-3.50" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Melonite", "title": "Wikipedia: Melonite" } ], "names": [ "Melonite" ], "chemicalFormula": "NiTe$_{2}$", "properties": [ { "scalars": [ { "value": "Sulfide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "02.EA.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "02.12.14.01" } ], "name": "Dana classification" }, { "scalars": [ { "value": "3.84" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.26" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "313.89" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "White, reddish white" } ], "name": "Color" }, { "scalars": [ { "value": "Crystalline foliated, granular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{0001} Perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Fracture" }, { "scalars": [ { "value": "1-1.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Dark gray" } ], "name": "Streak" }, { "scalars": [ { "value": "7.72" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "7.3" } ], "name": "Density" }, { "scalars": [ { "value": "None" } ], "name": "fluorescence" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Haggertyite", "title": "Wikipedia: Haggertyite" } ], "names": [ "Haggertyite" ], "chemicalFormula": "Ba(Fe$^{2+}$$_{6}$Ti$_{5}$Mg)O$_{19}$", "properties": [ { "scalars": [ { "value": "Oxide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "4.CC.45" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.926" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "23.32" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Gray" } ], "name": "Color" }, { "scalars": [ { "value": "Microscopic hexagonal platelets" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Hexagonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "4.87" } ], "conditions": [ { "scalars": [ { "value": "calculated" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "6/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 6$_{3}$/mmc" } ], "name": "Space group" }, { "scalars": [ { "value": "Hexagonal dihexagonal dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Enargite", "title": "Wikipedia: Enargite" } ], "names": [ "Enargite" ], "chemicalFormula": "Cu$_{3}$AsS$_{4}$", "properties": [ { "scalars": [ { "value": "Sulfide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.KA.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "7.407(1)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "6.436(1)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.154(1)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "393.82" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "Grayish black-iron black, gray-pale pink-brown, deep red internal re\\xef\\xac\\x82ections in polished section" } ], "name": "Color" }, { "scalars": [ { "value": "Tabular-prismatic crystals, striated parallel-{001}, massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Twin plane {320} common, rarely as interpenetrating pseudohexagonal trillings" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {110}, distinct {100} and {010}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic-dull" } ], "name": "Luster" }, { "scalars": [ { "value": "Black" } ], "name": "Streak" }, { "scalars": [ { "value": "4.4-4.5" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "mm2" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "Pmn2$_{1}$" } ], "name": "Space group" }, { "scalars": [ { "value": "Orthorhombic pyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Bixbyite", "title": "Wikipedia: Bixbyite" } ], "names": [ "Bixbyite" ], "chemicalFormula": "(Mn,Fe)$_{2}$O$_{3}$", "properties": [ { "scalars": [ { "value": "Oxide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "04.CB.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "4.3.7.2" } ], "name": "Dana classification" }, { "scalars": [ { "value": "9.411" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "16" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "158.33" } ], "name": "Molecular weight" }, { "scalars": [ { "value": "Massive-crystalline" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Isometric" } ], "name": "Crystal system" }, { "scalars": [ { "value": "On {111}, as penetration twins" } ], "name": "Twinning" }, { "scalars": [ { "value": "Imperfect on {111}, in traces" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Irregular-uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "6-6.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Black" } ], "name": "Streak" }, { "scalars": [ { "value": "5.12" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "4.95" } ], "name": "Density" }, { "scalars": [ { "value": "Al, Mg, Si, Ti" } ], "name": "impurities" }, { "scalars": [ { "value": "Isometric diploidal (2/m $\\bar{3}$)" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Euchroite", "title": "Wikipedia: Euchroite" } ], "names": [ "Euchroite" ], "chemicalFormula": "Cu$_{2}$AsO$_{4}$OH.3H$_{2}$O", "properties": [ { "scalars": [ { "value": "Arsenate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.DC.07" } ], "name": "Strunz classification" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Mellite", "title": "Wikipedia: Mellite" } ], "names": [ "Mellite" ], "chemicalFormula": "Al$_{2}$[C$_{6}$(COO)$_{6}$].16H$_{2}$O", "properties": [ { "scalars": [ { "value": "Organic compounds" } ], "name": "Category" }, { "scalars": [ { "value": "10.AC.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "15.53" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "23.19" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Honey-yellow, deep red, pale shades of red, brown, gray, white," } ], "name": "Color" }, { "scalars": [ { "value": "Elongated bipyramidal prismatic, as nodules and coatings, fine-grained massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Tetragonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "poor/indistinct on {023}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Slightly sectile" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2-2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, resinous, greasy" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "1.64" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.539" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.511" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.028" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Weak, O=yellowish brown, E=yellow" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Pale yellow-blue" } ], "conditions": [ { "scalars": [ { "value": "LW & SW UV" } ], "name": "Note" } ], "name": "fluorescence" }, { "scalars": [ { "value": "Pyroelectric" } ], "name": "Other" }, { "scalars": [ { "value": "Tetragonal (4/m 2/m 2/m) ditetragonal dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Cavansite", "title": "Wikipedia: Cavansite" } ], "names": [ "Cavansite" ], "chemicalFormula": "Ca(VO)Si$_{4}$O$_{10}$.4(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Silicate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "9.792(2)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "13.644(3)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "9.629(2)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Brilliant sky-blue-greenish blue" } ], "name": "Color" }, { "scalars": [ { "value": "Radiating acicular prismatic crystals commonly as spherulitic rosettes" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Good on {010}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3-4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, pearly" } ], "name": "Luster" }, { "scalars": [ { "value": "1.542(2)" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.544(2)" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.551(2)" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.009" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Visible: X=Z=colorless Y=blue" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Bluish-white" } ], "name": "Streak" }, { "scalars": [ { "value": "2.25-2.33" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Pcnm" } ], "name": "Space group" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Sperrylite", "title": "Wikipedia: Sperrylite" } ], "names": [ "Sperrylite" ], "chemicalFormula": "PtAs$_{2}$", "properties": [ { "scalars": [ { "value": "Arsenide mineral, pyrite group" } ], "name": "Category" }, { "scalars": [ { "value": "02.EB.05a" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.967" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Tin white" } ], "name": "Color" }, { "scalars": [ { "value": "Well-formed finely crystalline, massive-reniform" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "cubic Diploidal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Indistinct on {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "6-7" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Black" } ], "name": "Streak" }, { "scalars": [ { "value": "10.58" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Isometric 2/m $\\bar{3}$" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Fukuchilite", "title": "Wikipedia: Fukuchilite" } ], "names": [ "Fukuchilite" ], "chemicalFormula": "Cu$_{3}$FeS$_{8}$", "properties": [ { "scalars": [ { "value": "Sulfide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.EB.05a" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.58 : Z=1" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "Dark brownish gray, pinkish brown in polished section" } ], "name": "Color" }, { "scalars": [ { "value": "As intergrowths with pyrite and covellite, grains less than 1 $\\mu$m" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Cubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Submetallic" } ], "name": "Luster" }, { "scalars": [ { "value": "4.86" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2/m$\\bar{3}$" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P a3" } ], "name": "Space group" }, { "scalars": [ { "value": "Isometric diploidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Claudetite", "title": "Wikipedia: Claudetite" } ], "names": [ "Claudetite" ], "chemicalFormula": "As$_{2}$ O$_{3}$", "properties": [ { "scalars": [ { "value": "Oxide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "04.CB.45" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.33" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "12.98" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "4.54" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "94.27" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless-white" } ], "name": "Color" }, { "scalars": [ { "value": "Thin tabular crystals, fibrous crusts" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Contact or penetration on {100}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {010} micaceous" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Splintery" } ], "name": "Fracture" }, { "scalars": [ { "value": "Flexible" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2.15" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, pearly on cleavage surfaces" } ], "name": "Luster" }, { "scalars": [ { "value": "1.870" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.920" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "2.010" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.140" } ], "name": "Birefringence" }, { "scalars": [ { "value": "4.14-4.15" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 2$_{1}$/n" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Crocoite", "title": "Wikipedia: Crocoite" } ], "names": [ "Crocoite" ], "chemicalFormula": "Lead Chromate PbCrO$_{4}$", "properties": [ { "scalars": [ { "value": "Chromate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "7.12" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "7.421" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.8" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "102.41" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "07.FA.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Orange, red, yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Coarsely crystalline-acicular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Distinct on {110} indistinct on {001} and {100}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal-uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Sectile" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2.5-3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine" } ], "name": "Luster" }, { "scalars": [ { "value": "2.290(2)" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "2.360(2)" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "2.660(2)" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.370" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Weak" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Yellowish orange" } ], "name": "Streak" }, { "scalars": [ { "value": "5.9-6.1" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Monoclinic prismatic (2/m)" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Thorianite", "title": "Wikipedia: Thorianite" } ], "names": [ "Thorianite" ], "chemicalFormula": "Thorium oxide, ThO$_{2}$", "properties": [ { "scalars": [ { "value": "Oxide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "04.DL.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.595" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Dark gray, brown-black" } ], "name": "Color" }, { "scalars": [ { "value": "Cubic crystals, usually rounded-some degree in detrital deposits" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Isometric" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Penetration twins on {111} common" } ], "name": "Twinning" }, { "scalars": [ { "value": "Poor/Indistinct" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Irregular-uneven, sub-conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "6.5-7" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Resinous, sub-metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "2.20-2.35" } ], "name": "Refractive index (n)" }, { "scalars": [ { "value": "Grey, grey green-black" } ], "name": "Streak" }, { "scalars": [ { "value": "9.7" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "hexoctahedral" } ], "name": "Symmetry" }, { "scalars": [ { "value": "4/m$\\bar{3}$2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "F m3m" } ], "name": "Space group" }, { "scalars": [ { "value": "Isometric" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Niedermayrite", "title": "Wikipedia: Niedermayrite" } ], "names": [ "Niedermayrite" ], "chemicalFormula": "Cu$_{4}$Cd(SO$_{4}$)$_{2}$(OH)$_{6}$.4H$_{2}$O", "properties": [ { "scalars": [ { "value": "Sulfate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "07.DD.30" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.543(1)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "21.995(4)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.079(1)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "92.04(3)" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Bluish green" } ], "name": "Color" }, { "scalars": [ { "value": "Platy euhedral crystals and as green crusts" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {010}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.292" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.599-1.619" } ], "name": "Refractive index (n$\\alpha$)" }, { "scalars": [ { "value": "1.642" } ], "name": "Refractive index (n$\\beta$)" }, { "scalars": [ { "value": "1.661" } ], "name": "Refractive index (n$\\gamma$)" }, { "scalars": [ { "value": "0.062" } ], "name": "Birefringence" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 2$_{1}$/m" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Otavite", "title": "Wikipedia: Otavite" } ], "names": [ "Otavite" ], "chemicalFormula": "CdCO$_{3}$", "properties": [ { "scalars": [ { "value": "Carbonate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "05.AB.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Phillipsite", "title": "Wikipedia: Phillipsite" } ], "names": [ "Phillipsite" ], "chemicalFormula": "(Ca,Na$_{2}$,K$_{2}$)$_{3}$Al$_{6}$Si$_{10}$O$_{32}$.12H$_{2}$O", "properties": [ { "scalars": [ { "value": "Zeolites" } ], "name": "Category" }, { "scalars": [ { "value": "White" } ], "name": "Color" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "4-4.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.2" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.483-1.505" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.484-1.511" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.486-1.514" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.003-0.009" } ], "name": "Birefringence" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Celsian", "title": "Wikipedia: Celsian" } ], "names": [ "Celsian" ], "chemicalFormula": "BaAl$_{2}$Si$_{2}$O$_{8}$", "properties": [ { "scalars": [ { "value": "Feldspar" } ], "name": "Category" }, { "scalars": [ { "value": "09.FA.30" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "8.622(4)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "13.078(6)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "14.411(8)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "115.2" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless, white, yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Short prismatic-acicular crystals, massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Manebach twins on (001), baveno twins (021), rare lamellar twinning" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {001}, good on {010}, poor on {110}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "6-6.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.580-1.584" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.585-1.587" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.594-1.596" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.014, biaxial-" } ], "name": "Birefringence" }, { "scalars": [ { "value": "3.10-3.39" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "I21/c" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Bismite", "title": "Wikipedia: Bismite" } ], "names": [ "Bismite" ], "chemicalFormula": "Bi$_{2}$O$_{3}$", "properties": [ { "scalars": [ { "value": "Oxide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "04.CB.60" } ], "name": "Strunz classification" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Troilite", "title": "Wikipedia: Troilite" } ], "names": [ "Troilite" ], "chemicalFormula": "FeS", "properties": [ { "scalars": [ { "value": "Sulfide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "2.CC.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.958" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "11.74" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "12" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Pale gray brown" } ], "name": "Color" }, { "scalars": [ { "value": "Massive, granular, nodular, platey-tabular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Hexagonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Irregular" } ], "name": "Fracture" }, { "scalars": [ { "value": "3.5-4.0" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Gray black" } ], "name": "Streak" }, { "scalars": [ { "value": "4.67-4.79" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "6/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 6$_{3}$/mmc" } ], "name": "Space group" }, { "scalars": [ { "value": "Hexagonal dihexagonal dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Argyrodite", "title": "Wikipedia: Argyrodite" } ], "names": [ "Argyrodite" ], "chemicalFormula": "Ag$_{8}$GeS$_{6}$", "properties": [ { "scalars": [ { "value": "Sulfide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.BA.35" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "15.149" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "7.476" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "10.589" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Black, purplish tinge" } ], "name": "Color" }, { "scalars": [ { "value": "Pseudo-octahedra, dodecahedra, cubes, radiating crystal aggregates, botryoidal crusts, or massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic-pseudo-cubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Pseudospinel law {111} penetration twins" } ], "name": "Twinning" }, { "scalars": [ { "value": "Absent" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven-conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Weak" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "6.2-6.5" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Orthorhombic mm2 pyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Halloysite", "title": "Wikipedia: Halloysite" } ], "names": [ "Halloysite" ], "chemicalFormula": "Al$_{2}$Si$_{2}$O$_{5}$(OH)$_{4}$", "properties": [ { "scalars": [ { "value": "Phyllosilicates, Kaolinite-serpentine group" } ], "name": "Category" }, { "scalars": [ { "value": "09.ED.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.14" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8.9" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "7.214" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "99.7" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "White, grey, green, blue, yellow, red from included impurities." } ], "name": "Color" }, { "scalars": [ { "value": "Spherical clusters, massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Probable on {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "2-2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Pearly, waxy, or dull" } ], "name": "Luster" }, { "scalars": [ { "value": "2-2.65" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.553-1.565" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.559-1.569" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.560-1.570" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.007" } ], "name": "Birefringence" }, { "scalars": [ { "value": "m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "Cc" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic domatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Nosean", "title": "Wikipedia: Nosean" } ], "names": [ "Nosean" ], "chemicalFormula": "Na$_{8}$Al$_{6}$Si$_{6}$O$_{24}$(SO$_{4}$)", "properties": [ { "scalars": [ { "value": "Sodalite-" } ], "conditions": [ { "scalars": [ { "value": "Feldspathoid" } ], "name": "Note" } ], "name": "Category" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Ottrelite", "title": "Wikipedia: Ottrelite" } ], "names": [ "Ottrelite" ], "chemicalFormula": "(Mn,Fe,Mg)$_{2}$Al$_{4}$Si$_{2}$O$_{10}$(OH)$_{4}$", "properties": [ { "scalars": [ { "value": "Nesosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.AF.85" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Granular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Polysynthetic, {001}" } ], "name": "Twinning" }, { "scalars": [ { "value": "{001} perfect, {110} likely" } ], "name": "Cleavage" }, { "scalars": [ { "value": "6-7" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-nearly adamantine on cleavages" } ], "name": "Luster" }, { "scalars": [ { "value": "Greenish, grayish" } ], "name": "Streak" }, { "scalars": [ { "value": "3.50" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "3.52" } ], "name": "Density" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Abelsonite", "title": "Wikipedia: Abelsonite" } ], "names": [ "Abelsonite" ], "chemicalFormula": "C$_{31}$H$_{32}$N$_{4}$Ni", "properties": [ { "scalars": [ { "value": "Organic minerals" } ], "name": "Category" }, { "scalars": [ { "value": "10.CA.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "50.4.9.1" } ], "name": "Dana classification" }, { "scalars": [ { "value": "8.508" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "11.185" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "7.299" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "90.85" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\alpha$)" }, { "scalars": [ { "value": "114.1" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "79.99" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\gamma$)" }, { "scalars": [ { "value": "1" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Pink-purple, dark greyish purple, pale purplish red, reddish brown" } ], "name": "Color" }, { "scalars": [ { "value": "Triclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Probable on {11$\\bar{1}$}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Fragile" } ], "name": "Fracture" }, { "scalars": [ { "value": "2-3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine, sub-metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Non-fluorescent" } ], "name": "fluorescence" }, { "scalars": [ { "value": "Strong reddish brown-reddish black" } ], "name": "absorption" }, { "scalars": [ { "value": "Pink" } ], "name": "Streak" }, { "scalars": [ { "value": "P$\\bar{1}$ or P1" } ], "name": "Space group" }, { "scalars": [ { "value": "$\\bar{1}$ or 1" } ], "name": "Point group" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Abernathyite", "title": "Wikipedia: Abernathyite" } ], "names": [ "Abernathyite" ], "chemicalFormula": "K(UO$_{2}$)(AsO$_{4}$).3H$_{2}$O", "properties": [ { "scalars": [ { "value": "Arsenate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.EB.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "40.2a.9.1" } ], "name": "Dana classification" }, { "scalars": [ { "value": "7.176" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "18.126" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Tetragonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2.5-3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Sub-Vitreous, resinous, waxy, greasy" } ], "name": "Luster" }, { "scalars": [ { "value": "1.597-1.608" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.570" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.027-0.038" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Weak" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Yellow-green in longwave and shortwave UV" } ], "name": "fluorescence" }, { "scalars": [ { "value": "Pale yellow" } ], "name": "Streak" }, { "scalars": [ { "value": "4/m 2/m 2/m" } ], "name": "H-M group" }, { "scalars": [ { "value": "P4/ncc" } ], "name": "Space group" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Abhurite", "title": "Wikipedia: Abhurite" } ], "names": [ "Abhurite" ], "chemicalFormula": "Sn$_{21}$O$_{6}$(OH)$_{14}$Cl$_{16}$", "properties": [ { "scalars": [ { "value": "Halide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "03.DA.30" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Acuminite", "title": "Wikipedia: Acuminite" } ], "names": [ "Acuminite" ], "chemicalFormula": "SrAlF$_{4}$OH.(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Halide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "03.CC.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "13.223" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.175" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "14.251" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "11.61" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "White" } ], "name": "Color" }, { "scalars": [ { "value": "Clusters of acute dipyramidal Spearhead shaped crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Contact on {100}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "3.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "3.295" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.451" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.453" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.462-1.463" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "Monoclinic 2/m or m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Admontite", "title": "Wikipedia: Admontite" } ], "names": [ "Admontite" ], "chemicalFormula": "MgB$_{6}$O$_{10}$.7H$_{2}$O or", "properties": [ { "scalars": [ { "value": "Nesoborates" } ], "name": "Category" }, { "scalars": [ { "value": "06.FA.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "26.6.3.1" } ], "name": "Dana classification" }, { "scalars": [ { "value": "colorless" } ], "name": "Color" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Absent" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal-Fractures developed in brittle materials characterized by smoothly curving surfaces," } ], "conditions": [ { "scalars": [ { "value": "e.g. quartz" } ], "name": "Note" } ], "name": "Fracture" }, { "scalars": [ { "value": "2-3-Gypsum-Calcite" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "1.442" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.504" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.062" } ], "name": "Birefringence" }, { "scalars": [ { "value": "white" } ], "name": "Streak" }, { "scalars": [ { "value": "1.82-1.87" }, { "value": "Avera" } ], "conditions": [ { "scalars": [ { "value": "e=1.84" } ], "name": "Note" } ], "name": "Density" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Paragonite", "title": "Wikipedia: Paragonite" } ], "names": [ "Paragonite" ], "chemicalFormula": "NaAl$_{2}$[(OH)$_{2}$AlSi$_{3}$O$_{10}$]", "properties": [ { "scalars": [ { "value": "Phyllosilicates, Micas" } ], "name": "Category" }, { "scalars": [ { "value": "09.EC.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Colorless, pale yellow, grayish, grayish white, greenish, light apple-green" } ], "name": "Color" }, { "scalars": [ { "value": "massive, fibrous or scaly" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic (2/m) Space Group: C 2/m" } ], "name": "Crystal system" }, { "scalars": [ { "value": "common on the [310] less common on the {001}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on the {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Micaeous" } ], "name": "Fracture" }, { "scalars": [ { "value": "Elastic" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2.5-3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Pearly" } ], "name": "Luster" }, { "scalars": [ { "value": "1.564-1.580" } ], "name": "Refractive index (n$\\alpha$)" }, { "scalars": [ { "value": "1.594-1.609" } ], "name": "Refractive index (n$\\beta$)" }, { "scalars": [ { "value": "1.600-1.609" } ], "name": "Refractive index (n$\\gamma$)" }, { "scalars": [ { "value": "0.036" } ], "name": "Birefringence" }, { "scalars": [ { "value": "None" } ], "name": "fluorescence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.78" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Aenigmatite", "title": "Wikipedia: Aenigmatite" } ], "names": [ "Aenigmatite" ], "chemicalFormula": "Na$_{2}$Fe$^{2+}$$_{5}$TiSi$_{6}$O$_{20}$", "properties": [ { "scalars": [ { "value": "Inosilicates" } ], "name": "Category" }, { "scalars": [ { "value": "09.DH.40" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "10.415(1)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "10.840(1)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "8.931(1)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "105.107(4)" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\alpha$)" }, { "scalars": [ { "value": "96.610(5)" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "125.398(4)" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\gamma$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Velvet-black" } ], "name": "Color" }, { "scalars": [ { "value": "Poorly developed prismatic crystals, occurring as irregular clusters" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Triclinic-pseudomonoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Complex by rotation perpendicular- or about [010] of the pseudomonoclinic cell, polysynthetic" } ], "conditions": [ { "scalars": [ { "value": "01$\\bar{1}$" } ], "name": "Note" } ], "name": "Twinning" }, { "scalars": [ { "value": "Good on {010} and {100}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-greasy" } ], "name": "Luster" }, { "scalars": [ { "value": "Reddish brown" } ], "name": "Streak" }, { "scalars": [ { "value": "3.81" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.780-1.800" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.800-1.820" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.870-1.900" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.090-0.100" } ], "name": "Birefringence" }, { "scalars": [ { "value": "X=yellow brown, Y=red-brown, Z=dark brown-black" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "$\\bar{1}$" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P$\\bar{1}$" } ], "name": "Space group" }, { "scalars": [ { "value": "Triclinic pinacoidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Aerinite", "title": "Wikipedia: Aerinite" } ], "names": [ "Aerinite" ], "chemicalFormula": "Ca$_{4}$(Al,Fe,Mg)$_{10}$Si$_{12}$O$_{35}$(OH)$_{12}$CO$_{3}$.12H$_{2}$O", "properties": [ { "scalars": [ { "value": "Inosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.DB.45" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "14.690(15)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "16.872(15)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.170(15)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Blue-blue-green" } ], "name": "Color" }, { "scalars": [ { "value": "fibrous" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "bluish white" } ], "name": "Streak" }, { "scalars": [ { "value": "2.48" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "n$_{\\alpha}$1.510(5)" } ], "name": "Refractive index" }, { "scalars": [ { "value": "1.560(5)" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.580" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "Intense, X=bright blue, Y=Z=pale beige" } ], "name": "Pleochroism" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Aerugite", "title": "Wikipedia: Aerugite" } ], "names": [ "Aerugite" ], "chemicalFormula": "Ni$_{9}$(AsO$_{4}$)$_{2}$AsO$_{6}$", "properties": [ { "scalars": [ { "value": "Arsenate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.BC.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Grass green, blue-green" } ], "name": "Color" }, { "scalars": [ { "value": "Massive-crystalline crusts" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal-hexagonal scalenohedral" } ], "name": "Crystal system" }, { "scalars": [ { "value": "4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine" } ], "name": "Luster" }, { "scalars": [ { "value": "light green, greenish white" } ], "name": "Streak" }, { "scalars": [ { "value": "5.85-5.95" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Aeschynite-(Ce)", "title": "Wikipedia: Aeschynite-(Ce)" } ], "names": [ "Aeschynite-(Ce)" ], "chemicalFormula": "(Ce,Ca,Fe,Th)(Ti,Nb)$_{2}$(O,OH)$_{6}$", "properties": [ { "scalars": [ { "value": "Oxide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "04.DF.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "08.03.06.01" } ], "name": "Dana classification" }, { "scalars": [ { "value": "11.08" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "7.56" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.37" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "305.70" } ], "units": "gm", "name": "Molecular weight" }, { "scalars": [ { "value": "Brown, light brown, brownish black, yellow, black" } ], "name": "Color" }, { "scalars": [ { "value": "Acicular, massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic-dipyramidal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle-conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine, resinous-waxy, sub-metallic, dull when altered" } ], "name": "Luster" }, { "scalars": [ { "value": "Nearly black-brown" } ], "name": "Streak" }, { "scalars": [ { "value": "4.52" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "5.19" } ], "name": "Density" }, { "scalars": [ { "value": "2.26" } ], "name": "Refractive index" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Aeschynite-(Y)", "title": "Wikipedia: Aeschynite-(Y)" } ], "names": [ "Aeschynite-(Y)" ], "chemicalFormula": "(Y,Ca,Fe,Th)(Ti,Nb)$_{2}$(O,OH)$_{6}$", "properties": [ { "scalars": [ { "value": "Oxide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "04.DF.05" } ], "name": "Strunz classification" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Descloizite", "title": "Wikipedia: Descloizite" } ], "names": [ "Descloizite" ], "chemicalFormula": "(Pb,Zn)$_{2}$VO$_{4}$OH", "properties": [ { "scalars": [ { "value": "Vanadate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "08.BH.40" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "7.593" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "6.057" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "9.416" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Brownish red, red-orange, reddish-blackish brown, nearly black" } ], "name": "Color" }, { "scalars": [ { "value": "Zoned tabular crystals common, encrustations and plumose aggregates" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Irregular, sub-conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3-3.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Greasy" } ], "name": "Luster" }, { "scalars": [ { "value": "Orange-brownish red" } ], "name": "Streak" }, { "scalars": [ { "value": "6.1-6.2" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.185" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "2.265" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "2.350" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.165" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Visible" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Orthorhombic (2/m 2/m 2/m)-dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Struvite", "title": "Wikipedia: Struvite" } ], "names": [ "Struvite" ], "chemicalFormula": "NH$_{4}$MgPO$_{4}$.6H$_{2}$O", "properties": [ { "scalars": [ { "value": "Phosphate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "08.CH.40" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Colourless, white , yellow or brownish, light gray" } ], "conditions": [ { "scalars": [ { "value": "dehydrated" } ], "name": "Note" } ], "name": "Color" }, { "scalars": [ { "value": "Euhedral-platey" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic-Pyramidal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "On {001}" } ], "name": "Twinning" }, { "scalars": [ { "value": "{100} perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "1.5-2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-dull" } ], "name": "Luster" }, { "scalars": [ { "value": "1.495" } ], "name": "Refractive index (n$\\alpha$)" }, { "scalars": [ { "value": "1.496" } ], "name": "Refractive index (n$\\beta$)" }, { "scalars": [ { "value": "1.504" } ], "name": "Refractive index (n$\\gamma$)" }, { "scalars": [ { "value": "0.009" } ], "name": "Birefringence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "1.7" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Slightly soluble, dehydrates in dry, warm air" } ], "name": "Solubility" }, { "scalars": [ { "value": "Pyroelectric and piezoelectric" } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Afwillite", "title": "Wikipedia: Afwillite" } ], "names": [ "Afwillite" ], "chemicalFormula": "Ca$_{3}$(SiO$_{3}$OH)$_{2}$.2H$_{2}$O", "properties": [ { "scalars": [ { "value": "Nesosilicates" } ], "name": "Category" }, { "scalars": [ { "value": "09.AG.75" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "16.278(1)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.6321(4)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "13.236(1)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "134.9" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless, white" } ], "name": "Color" }, { "scalars": [ { "value": "Prismatic , tabular, radial fibrous, massive" } ], "conditions": [ { "scalars": [ { "value": "striated" } ], "name": "Note" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect along [10$\\bar{1}$], good along [100]" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3-4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.617" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.620" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.634" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.0167" } ], "name": "Birefringence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.630" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Piezoelectric" } ], "name": "Other" }, { "scalars": [ { "value": "2" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 21" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic sphenoidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Agardite", "title": "Wikipedia: Agardite" } ], "names": [ "Agardite" ], "chemicalFormula": "(REE,Ca)Cu$_{6}$(AsO$_{4}$)$_{3}$(OH)$_{6}$.3H$_{2}$O", "properties": [ { "scalars": [ { "value": "Arsenate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.DL.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "(Y): 42.05.01.02, (Ce): 42.05.01.02e, (Nd): 42.05.01.02b, (La): 42.05.01.02a" } ], "name": "Dana classification" }, { "scalars": [ { "value": "13.59" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.89" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Yellow green" } ], "name": "Color" }, { "scalars": [ { "value": "Acicular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "3-4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "Greenish white" } ], "name": "Streak" }, { "scalars": [ { "value": "3.7" }, { "value": "3.775" } ], "conditions": [ { "scalars": [ { "value": "measured" }, { "value": "calculated" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.725" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.81" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.085" } ], "name": "Birefringence" }, { "scalars": [ { "value": "yellowish green" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "6/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P6$_{3}$/m" } ], "name": "Space group" }, { "scalars": [ { "value": "Hexagonal-dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Celadonite", "title": "Wikipedia: Celadonite" } ], "names": [ "Celadonite" ], "chemicalFormula": "K(Mg,Fe$^{2+}$)(Fe$^{3+}$,Al)[Si$_{4}$O$_{10}$](OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Mica-Phyllosilicate" } ], "name": "Category" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Polybasite", "title": "Wikipedia: Polybasite" } ], "names": [ "Polybasite" ], "chemicalFormula": "[(Ag,Cu)$_{6}$(Sb,As)$_{2}$S$_{7}$][Ag$_{9}$CuS$_{4}$]", "properties": [ { "scalars": [ { "value": "Sulfosalt minerals" } ], "name": "Category" }, { "scalars": [ { "value": "02.GB.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "poor on (001)" } ], "name": "Cleavage" }, { "scalars": [ { "value": "uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "1.5-2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "metallic, adamantine or glimmering" } ], "name": "Luster" }, { "scalars": [ { "value": "black with reddish tint" } ], "name": "Streak" }, { "scalars": [ { "value": "6-6.2" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Polyhalite", "title": "Wikipedia: Polyhalite" } ], "names": [ "Polyhalite" ], "chemicalFormula": "K$_{2}$Ca$_{2}$Mg(SO$_{4}$)$_{4}$.2H$_{2}$O", "properties": [ { "scalars": [ { "value": "Sulfate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "07.CC.65" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "6.95" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8.88" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.95" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "104.06" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\alpha$)" }, { "scalars": [ { "value": "113.94" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "101.15" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\gamma$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless, white, gray, often salmon-pink-brick-red from included iron oxide" } ], "name": "Color" }, { "scalars": [ { "value": "Typically fibrous, foliated, massive, rarely as tabular crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Triclinic (pseudo-orthorhombic)" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Characteristically polysynthetic on {010}, {100}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {10$\\bar{1}$}, parting on {010}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-resinous" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.78" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.546-1.548" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.558-1.562" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.567" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.021" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Soluble in water, with precipitation of gypsum and perhaps syngenite" } ], "name": "Solubility" }, { "scalars": [ { "value": "P$\\bar{1}$" } ], "name": "Space group" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Massicot", "title": "Wikipedia: Massicot" } ], "names": [ "Massicot" ], "chemicalFormula": "PbO", "properties": [ { "scalars": [ { "value": "Oxide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "04.AC.25" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.4903" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.892" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "4.752" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Yellow may have a red tint" } ], "name": "Color" }, { "scalars": [ { "value": "Scaly as incrustations, massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Distinct on {100} and {010}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Flexible" } ], "name": "Fracture" }, { "scalars": [ { "value": "2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Greasy-dull" } ], "name": "Luster" }, { "scalars": [ { "value": "Yellow" } ], "name": "Streak" }, { "scalars": [ { "value": "9.642" } ], "conditions": [ { "scalars": [ { "value": "calculated" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.510" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "2.610" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "2.710" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.200" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Y=light sulfur-yellow, Z=deep yellow" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "2/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "Pbma" } ], "name": "Space group" }, { "scalars": [ { "value": "Orthorhombic dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Thomsonite", "title": "Wikipedia: Thomsonite" } ], "names": [ "Thomsonite" ], "chemicalFormula": "NaCa$_{2}$Al$_{5}$Si$_{5}$O$_{20}$.6H$_{2}$O", "properties": [ { "scalars": [ { "value": "tec--silicate" } ], "name": "Category" }, { "scalars": [ { "value": "colorless, white, beige" } ], "name": "Color" }, { "scalars": [ { "value": "orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "perfect on {010}, good on {100}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "5-5.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "vitreous, pearly" } ], "name": "Luster" }, { "scalars": [ { "value": "white" } ], "name": "Streak" }, { "scalars": [ { "value": "2.23-2.29" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "(2/m 2/m 2/m)-Dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Safflorite", "title": "Wikipedia: Safflorite" } ], "names": [ "Safflorite" ], "chemicalFormula": "(Co,Fe)As$_{2}$", "properties": [ { "scalars": [ { "value": "02.EB.15a" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.173" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.954" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "2.999" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Tin white, tarnishes-gray" } ], "name": "Color" }, { "scalars": [ { "value": "Prismatic crystals, massive-fibrous" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Forms cruciform penetration twins" } ], "name": "Twinning" }, { "scalars": [ { "value": "Distinct on {100}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven-conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "4.5-5.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Grayish black" } ], "name": "Streak" }, { "scalars": [ { "value": "6.9-7.3" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "Pnnm" } ], "name": "Space group" }, { "scalars": [ { "value": "Orthorhombic dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Rammelsbergite", "title": "Wikipedia: Rammelsbergite" } ], "names": [ "Rammelsbergite" ], "chemicalFormula": "NiAs$_{2}$", "properties": [ { "scalars": [ { "value": "02.EB.15a" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "4.759" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.797" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "3.539" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Tin white with a faint pinkish hue" } ], "name": "Color" }, { "scalars": [ { "value": "Rarely as prismatic crystals, commonly massive, granular, radial, fibrous" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic (prismatic)" } ], "name": "Crystal system" }, { "scalars": [ { "value": "On {101}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Distinct on {101}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Irregular" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5.5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Grayish black" } ], "name": "Streak" }, { "scalars": [ { "value": "7.0-7.1" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Weak, yellow-pinkish hue and bluish white" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "2/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "Pnnm" } ], "name": "Space group" }, { "scalars": [ { "value": "Orthorhombic dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Sanbornite", "title": "Wikipedia: Sanbornite" } ], "names": [ "Sanbornite" ], "chemicalFormula": "Ba(Si$_{2}$O$_{5}$)", "properties": [ { "scalars": [ { "value": "Phyllosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.EF.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "4.62" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "7.68" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "13.52" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "273.50" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "Colorless, White" } ], "name": "Color" }, { "scalars": [ { "value": "Platy modulated layers" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic-Dipyramidal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.597" } ], "name": "Refractive index (''n$_{\\alpha}$'')" }, { "scalars": [ { "value": "1.616" } ], "name": "Refractive index (''n$_{\\beta}$'')" }, { "scalars": [ { "value": "1.624" } ], "name": "Refractive index (''n$_{\\gamma}$'')" }, { "scalars": [ { "value": "0.0270" } ], "name": "Birefringence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.74" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Orthorhombic 2/m 2/m 2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Scorodite", "title": "Wikipedia: Scorodite" } ], "names": [ "Scorodite" ], "chemicalFormula": "FeAsO$_{4}$.2H$_{2}$O", "properties": [ { "scalars": [ { "value": "Arsenate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.CD.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "8.937" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "10.278" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "9.996" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "Green, blue-green, grey, grayish-green, blue, yellow-brown, nearly colourless, violet" } ], "name": "Color" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Sub-Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "3.5-4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Sub-Adamantine, Vitreous, Resinous" } ], "name": "Luster" }, { "scalars": [ { "value": "Greenish-White" } ], "name": "Streak" }, { "scalars": [ { "value": "measured: 3.27" } ], "conditions": [ { "scalars": [ { "value": "g/cm$^3$ calculated: 3.276 g/cm$^3$" } ], "name": "Note" } ], "name": "Density" }, { "scalars": [ { "value": "Weak" } ], "name": "Pleochroism" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Aluminite", "title": "Wikipedia: Aluminite" } ], "names": [ "Aluminite" ], "chemicalFormula": "Al$_{2}$SO$_{4}$(OH)$_{4}$.7H$_{2}$O", "properties": [ { "scalars": [ { "value": "Sulfate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "07.DC.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "7.44" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "15.583" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "11.7" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "110.18" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "White-grayish white" } ], "name": "Color" }, { "scalars": [ { "value": "Needles and fibrous masses" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Irregular/uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Friable" } ], "name": "Tenacity" }, { "scalars": [ { "value": "1-2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Dull-earthy" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "1.66-1.82" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.459" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.464" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.470" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.011" } ], "name": "Birefringence" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 2$_{1}$/c" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Sepiolite", "title": "Wikipedia: Sepiolite" } ], "names": [ "Sepiolite" ], "chemicalFormula": "Mg$_{4}$Si$_{6}$O$_{15}$(OH)$_{2}$.6H$_{2}$O", "properties": [ { "scalars": [ { "value": "Phyllosilicates" } ], "name": "Category" }, { "scalars": [ { "value": "09.EE.25 Single tetrahedral nets of 6-membered rings" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "74.03.01b.01 Palygorskite-sepiolite group" } ], "name": "Dana classification" }, { "scalars": [ { "value": "5.21" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "26.73" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "13.5" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Grayish white, white, white with a yellowish or reddish tinge, bluish green" } ], "name": "Color" }, { "scalars": [ { "value": "Compact nodular, earthy, clayey, massive, rarely fine fibrous along [001]" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic-Dipyramidal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Dull, earthy" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2" }, { "value": "dry porous masses float on water" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.520" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.520" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.530" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.010" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Orthorhombic 2/m2/m2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Hauyne", "title": "Wikipedia: Hauyne" } ], "names": [ "Hauyne" ], "chemicalFormula": "Na$_{3}$Ca(Si$_{3}$Al$_{3}$)O$_{12}$(SO$_{4}$)", "properties": [ { "scalars": [ { "value": "Tec-silicate, sodalite group" } ], "name": "Category" }, { "scalars": [ { "value": "1032.43" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "09.FB.10, 8/J.11-30" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "76.2.3.3" } ], "name": "Dana classification" }, { "scalars": [ { "value": "1" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "9.08-9.13" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "Blue, white, grey, yellow, green, pink" } ], "name": "Color" }, { "scalars": [ { "value": "Dodecahedral or pseudo-octahedral" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Isometric" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Common on {111}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Distinct on {110}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven-conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-greasy" } ], "name": "Luster" }, { "scalars": [ { "value": "1.494-1.509" } ], "name": "Refractive index (n)" }, { "scalars": [ { "value": "None, isotropic" } ], "name": "Birefringence" }, { "scalars": [ { "value": "None, isotropic" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Very pale blue-white" } ], "name": "Streak" }, { "scalars": [ { "value": "2.4-2.5" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "4.5" } ], "name": "Fusibility" }, { "scalars": [ { "value": "Gelatinises in acids" } ], "name": "Solubility" }, { "scalars": [ { "value": "May fluoresce orange-pink under longwave ultraviolet light" } ], "name": "Other" }, { "scalars": [ { "value": "$\\bar{4}$3m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P $\\bar{4}$3n" } ], "name": "Space group" }, { "scalars": [ { "value": "Isometric hextetrahedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Allophane", "title": "Wikipedia: Allophane" } ], "names": [ "Allophane" ], "chemicalFormula": "Al$_{2}$O$_{3}$.(SiO$_{2}$)$_{1.3-2}$.(2.5-3)H$_{2}$O", "properties": [ { "scalars": [ { "value": "Phyllosilicates, Kaolinite-serpentine group" } ], "name": "Category" }, { "scalars": [ { "value": "09.ED.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "White, pale blue-sky-blue, green, brown" } ], "name": "Color" }, { "scalars": [ { "value": "Amorphous" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Waxy" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Thomsenolite", "title": "Wikipedia: Thomsenolite" } ], "names": [ "Thomsenolite" ], "chemicalFormula": "NaCaAlF$_{6}$.H$_{2}$O", "properties": [ { "scalars": [ { "value": "Halide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "03.CB.40" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Colourless, white, pale lilac, brownish or reddish tinted due-staining, colourless in transmitted light." } ], "name": "Color" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect, On {001}, {110} distinct." } ], "name": "Cleavage" }, { "scalars": [ { "value": "Irregular/ uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, pearly" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.981" } ], "conditions": [ { "scalars": [ { "value": "g/cm$^{3}$" } ], "name": "Note" } ], "name": "Density" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Tungstite", "title": "Wikipedia: Tungstite" } ], "names": [ "Tungstite" ], "chemicalFormula": "WO$_{3}$.H$_{2}$O", "properties": [ { "scalars": [ { "value": "249.86" } ], "units": "g/mol", "name": "Molecular weight" }, { "scalars": [ { "value": "04.FJ.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Yellow, yellowish green/orange" } ], "name": "Color" }, { "scalars": [ { "value": "Earthy, pulverulent" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic dipyramidal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect along [001], imperfect along [110]" } ], "name": "Cleavage" }, { "scalars": [ { "value": "2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Resinous, pearly" } ], "name": "Luster" }, { "scalars": [ { "value": "2.090" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "2.240" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "2.260" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.170" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Yellow" } ], "name": "Streak" }, { "scalars": [ { "value": "5.517" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Vauquelinite", "title": "Wikipedia: Vauquelinite" } ], "names": [ "Vauquelinite" ], "chemicalFormula": "CuPb$_{2}$(CrO$_{4}$)(PO$_{4}$)(OH)", "properties": [ { "scalars": [ { "value": "Phosphate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "07.FC.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "13.754(5)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.806(6)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "9.563(3)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "94.55" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Olive-green, apple-green, brown-nearly black" } ], "name": "Color" }, { "scalars": [ { "value": "Irregular wedge shaped crystals, mammillary, reniform masses" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Present on {102}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Indistinct" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Irregular" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2.5-3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine, resinous" } ], "name": "Luster" }, { "scalars": [ { "value": "Greenish or brownish" } ], "name": "Streak" }, { "scalars": [ { "value": "6.16" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.110" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "2.220" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "2.220" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.110" } ], "name": "Birefringence" }, { "scalars": [ { "value": "X=Light green, Y=Light brown, Z=Light brown" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 2$_{1}$/n" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Volborthite", "title": "Wikipedia: Volborthite" } ], "names": [ "Volborthite" ], "chemicalFormula": "Cu$_{3}$V$_{2}$O$_{7}$(OH)$_{2}$.2H$_{2}$O", "properties": [ { "scalars": [ { "value": "Polyvanadate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.FD.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "40.03.10.01" } ], "name": "Dana classification" }, { "scalars": [ { "value": "10.610(2)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.866(1)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "7.208(1)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "95.04(2)" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "Olive-green, yellow-green, green-yellow-green in transmitted light" } ], "name": "Color" }, { "scalars": [ { "value": "Aggregates of scaly crystals, rosettes" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "3.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, waxy, greasy, pearly" } ], "name": "Luster" }, { "scalars": [ { "value": "light green" } ], "name": "Streak" }, { "scalars": [ { "value": "3.5-3.8" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.793" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.801" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.816" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.023" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Weak" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Non-fluorescent" } ], "name": "fluorescence" }, { "scalars": [ { "value": "Soluble in acids" } ], "name": "Solubility" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "C 2/m" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Warwickite", "title": "Wikipedia: Warwickite" } ], "names": [ "Warwickite" ], "chemicalFormula": "(Mg,Fe$^{2+}$)$_{3}$Ti[OBO$_{3}$]$_{2}$", "properties": [ { "scalars": [ { "value": "06.AB.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "dark brown, grey-black\\xc2\\xa8" } ], "name": "Color" }, { "scalars": [ { "value": "orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "perfect on {100}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "irregular/uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "3-4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "sub-Vitreous, pearly, sub-metallic, dull" } ], "name": "Luster" }, { "scalars": [ { "value": "bluish black" } ], "name": "Streak" }, { "scalars": [ { "value": "3.34-3.36" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Bromellite", "title": "Wikipedia: Bromellite" } ], "names": [ "Bromellite" ], "chemicalFormula": "BeO", "properties": [ { "scalars": [ { "value": "Oxide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "04.AB.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "White, colorless" } ], "name": "Color" }, { "scalars": [ { "value": "prismatic" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Hexagonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "[1010] Distinct" } ], "name": "Cleavage" }, { "scalars": [ { "value": "9" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.719" } ], "name": "Refractive index" }, { "scalars": [ { "value": "1.733" } ], "name": "Refractive index" }, { "scalars": [ { "value": "None" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.02" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Whewellite", "title": "Wikipedia: Whewellite" } ], "names": [ "Whewellite" ], "chemicalFormula": "CaC$_{2}$O$_{4}$.H$_{2}$O", "properties": [ { "scalars": [ { "value": "Oxalates" } ], "name": "Category" }, { "scalars": [ { "value": "10.AB.45" } ], "name": "Strunz classification" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Carnallite", "title": "Wikipedia: Carnallite" } ], "names": [ "Carnallite" ], "chemicalFormula": "KMgCl$_{3}$.6(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Halide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "03.BA.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Blue, colorless, yellow, white, red" } ], "name": "Color" }, { "scalars": [ { "value": "Fibrous" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic, (2/m 2/m 2/m), space group: Pcna" } ], "name": "Crystal system" }, { "scalars": [ { "value": "By pressure, polysynthetic twin lamellae can be developed" } ], "name": "Twinning" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Greasy" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "1.6" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.598" } ], "conditions": [ { "scalars": [ { "value": "g/cm$^{3}$" } ], "name": "Note" } ], "name": "Density" }, { "scalars": [ { "value": "1.467" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.476" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.494" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.0270" } ], "name": "Birefringence" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Domeykite", "title": "Wikipedia: Domeykite" } ], "names": [ "Domeykite" ], "chemicalFormula": "Cu$_{3}$As", "properties": [ { "scalars": [ { "value": "Arsenide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "9.62" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "16" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "265.56" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "02.AA.10b" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Tin-white-steel-gray" } ], "name": "Color" }, { "scalars": [ { "value": "Reniform, botryoidal, massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Isometric" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle-sectile" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3-3.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Black gray" } ], "name": "Streak" }, { "scalars": [ { "value": "7.2-8.1" }, { "value": "" } ], "conditions": [ { "scalars": [ { "value": "average=7.65" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Tarnishes pale yellow, then pale brown, and \\xef\\xac\\x81nally-iridescence" } ], "name": "Other" }, { "scalars": [ { "value": "$\\bar{4}$3m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "I$\\bar{4}$3d" } ], "name": "Space group" }, { "scalars": [ { "value": "Isometric hextetrahedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Copiapite", "title": "Wikipedia: Copiapite" } ], "names": [ "Copiapite" ], "chemicalFormula": "Fe$^{2+}$Fe$^{3+}$$_{4}$(SO$_{4}$)$_{6}$(OH)$_{2}$.20(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Sulfate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "07.DB.35" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "7.337" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "18.76" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "7.379" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "91.47" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\alpha$)" }, { "scalars": [ { "value": "102.18" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "98.95" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\gamma$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Sulfur-yellow-orange when crystalline, greenish-yellow-olive-green when massive" } ], "name": "Color" }, { "scalars": [ { "value": "Tabular pseudo-orthorhombic platy crystals, typically in scaly incrustations or granular pulverulent aggregates" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Triclinic Pinacoidal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Contact twins" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {010}, imperfect on {$\\bar{1}$01}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Irregular/uneven, micaceous" } ], "name": "Fracture" }, { "scalars": [ { "value": "Fragile" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2.5-3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Pearly on {010}" } ], "name": "Luster" }, { "scalars": [ { "value": "2.04-2.17" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.506-1.540" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.528-1.549" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.575-1.600" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.069" } ], "name": "Birefringence" }, { "scalars": [ { "value": "X=Y=pale yellow-colorless, Z=sulfur-yellow" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Soluble in water" } ], "name": "Solubility" }, { "scalars": [ { "value": "Triclinic $\\bar{1}$" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Algodonite", "title": "Wikipedia: Algodonite" } ], "names": [ "Algodonite" ], "chemicalFormula": "Cu$_{6}$As", "properties": [ { "scalars": [ { "value": "Sulfide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.AA.10a" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "2.6" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "4.228" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "456.2" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "Gray, silver white, steel gray, tarnishes dull bronze" } ], "name": "Color" }, { "scalars": [ { "value": "Massive, granular. Common texture observed in granite and other igneous rock" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Sub-conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "8.38" }, { "value": "8.72" } ], "conditions": [ { "scalars": [ { "value": "measured" }, { "value": "calculated" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Non-magnetic, non-fluorescent" } ], "name": "Other" }, { "scalars": [ { "value": "6/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P6$_{3}$/mmc" } ], "name": "Space group" }, { "scalars": [ { "value": "Hexagonal-dihexagonal dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Yttrocerite", "title": "Wikipedia: Yttrocerite" } ], "names": [ "Yttrocerite" ], "chemicalFormula": "CaF$_{2}$ + (Y,Ce)F$_{3}$", "properties": [ { "scalars": [ { "value": "Mineral variety" } ], "name": "Category" }, { "scalars": [ { "value": "Cubic" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "4-5" } ], "name": "Mohs scale hardness" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Apophyllite", "title": "Wikipedia: Apophyllite" } ], "names": [ "Apophyllite" ], "chemicalFormula": "(K,Na)Ca$_{4}$Si$_{8}$O$_{20}$(F,OH).8H$_{2}$O", "properties": [ { "scalars": [ { "value": "Phyllosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "Usually white, colorless, also blue, green, brown, yellow, pink, violet" } ], "name": "Color" }, { "scalars": [ { "value": "Prismatic, tabular, massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Tetragonal, (Apophyllite-(NaF) is orthorhombic)" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on [001]" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "4.5-5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, pearly" } ], "name": "Luster" }, { "scalars": [ { "value": "1.536" } ], "name": "Refractive index" }, { "scalars": [ { "value": "Dichroic" } ], "conditions": [ { "scalars": [ { "value": "colorless" } ], "name": "Note" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.3-2.4" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Babingtonite", "title": "Wikipedia: Babingtonite" } ], "names": [ "Babingtonite" ], "chemicalFormula": "Ca$_{2}$(Fe,Mn)FeSi$_{5}$O$_{14}$(OH)", "properties": [ { "scalars": [ { "value": "Inosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.DK.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Dark green-black" } ], "name": "Color" }, { "scalars": [ { "value": "Prismatic crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Triclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {001}, Good on {010} and {100}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Irregular/uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5.5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.700" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.710" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.725" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.025" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Visible" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "3.3" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Aikinite", "title": "Wikipedia: Aikinite" } ], "names": [ "Aikinite" ], "chemicalFormula": "PbCuBiS$_{3}$", "properties": [ { "scalars": [ { "value": "Sulfide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.HB.05a" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "3.4.5.1" } ], "name": "Dana classification" }, { "scalars": [ { "value": "11.297" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "11.654" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "4.061" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "575.92" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "Lead gray, grayish black, reddish brown" } ], "name": "Color" }, { "scalars": [ { "value": "Acicular, massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "{010} indistinct" } ], "name": "Cleavage" }, { "scalars": [ { "value": "2-2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Grayish black" } ], "name": "Streak" }, { "scalars": [ { "value": "6.1-6.8" }, { "value": "" } ], "conditions": [ { "scalars": [ { "value": "Average=6.44" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Not radioactive" } ], "name": "Other" }, { "scalars": [ { "value": "2/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "Pbnm" } ], "name": "Space group" }, { "scalars": [ { "value": "Orthorhombic-dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Berthierite", "title": "Wikipedia: Berthierite" } ], "names": [ "Berthierite" ], "chemicalFormula": "FeSb$_{2}$S$_{4}$", "properties": [ { "scalars": [ { "value": "02.HA.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "steel grey" } ], "name": "Color" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "poor/indistinct" } ], "name": "Cleavage" }, { "scalars": [ { "value": "2-3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "4.64" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Boulangerite", "title": "Wikipedia: Boulangerite" } ], "names": [ "Boulangerite" ], "chemicalFormula": "Pb$_{5}$Sb$_{4}$S$_{11}$", "properties": [ { "scalars": [ { "value": "Sulfosalt minerals" } ], "name": "Category" }, { "scalars": [ { "value": "02.HC.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Black" } ], "name": "Streak" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Brushite", "title": "Wikipedia: Brushite" } ], "names": [ "Brushite" ], "chemicalFormula": "CaHPO4.2H2O", "properties": [ { "scalars": [ { "value": "Phosphate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "08.CJ.50" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "6.265" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "15.19" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.814" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "116.47" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless-pale or ivory-yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Prismatic-tabular acicular crystals, typically powdery or earthy" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {010} and {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, pearly on cleavages" } ], "name": "Luster" }, { "scalars": [ { "value": "2.328" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.539-1.540" } ], "name": "Refractive index (n$\\alpha$)" }, { "scalars": [ { "value": "1.544-1.546" } ], "name": "Refractive index (n$\\beta$)" }, { "scalars": [ { "value": "1.551-1.552" } ], "name": "Refractive index (n$\\gamma$)" }, { "scalars": [ { "value": "0.012" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Readily in HCl" } ], "name": "Solubility" }, { "scalars": [ { "value": "Piezoelectric" } ], "name": "Other" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "I2/a" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Chaoite", "title": "Wikipedia: Chaoite" } ], "names": [ "Chaoite" ], "chemicalFormula": "C", "properties": [ { "scalars": [ { "value": "Native element mineral" } ], "name": "Category" }, { "scalars": [ { "value": "1.CB.05b" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "8.948" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "14.078" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "168" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Thin 3-15 $\\mu$m intergrowth lamallae with graphite" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Hexagonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "1-2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Submetallic" } ], "name": "Luster" }, { "scalars": [ { "value": "3.43" } ], "conditions": [ { "scalars": [ { "value": "calculated" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "6/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 6/mmm" } ], "name": "Space group" }, { "scalars": [ { "value": "Hexagonal dihexagonal dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Cancrinite", "title": "Wikipedia: Cancrinite" } ], "names": [ "Cancrinite" ], "chemicalFormula": "Na$_{6}$Ca$_{2}$[(CO$_{3}$)$_{2}$Al$_{6}$Si$_{6}$O$_{24}$].2H$_{2}$O", "properties": [ { "scalars": [ { "value": "Feldspathoid" } ], "name": "Category" }, { "scalars": [ { "value": "09.FB.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "12.67(9)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.15(4)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "1" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Grey-green, white, yellow, blue, orange, reddish" } ], "name": "Color" }, { "scalars": [ { "value": "Rare as prismatic crystals, typicallt massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Hexagonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Rare-lamellar" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {10$\\bar{1}$0}, poor on {0001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Irregular/uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, greasy, pearly" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.42-2.51" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.507-1.528" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.495-1.503" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.012-0.025" } ], "name": "Birefringence" }, { "scalars": [ { "value": "6" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 6$_{3}$" } ], "name": "Space group" }, { "scalars": [ { "value": "Hexagonal pyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Hanksite", "title": "Wikipedia: Hanksite" } ], "names": [ "Hanksite" ], "chemicalFormula": "Na$_{22}$K(SO$_{4}$)$_{9}$(CO$_{3}$)$_{2}$Cl", "properties": [ { "scalars": [ { "value": "Sulfate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "07.BD.30" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "10.465(21)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "21.191(43)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless-pale yellow, may be grayish green due-clay inclusions" } ], "name": "Color" }, { "scalars": [ { "value": "Occurs as short prismatic-tabular hexagonal crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Hexagonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Good on {0001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3-3.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-dull" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.562" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.481" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.461" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.020" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Pale yellow under LW UV" } ], "name": "fluorescence" }, { "scalars": [ { "value": "Readily soluble in water" } ], "name": "Solubility" }, { "scalars": [ { "value": "Hexagonal 6/m dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Cerite", "title": "Wikipedia: Cerite" } ], "names": [ "Cerite" ], "chemicalFormula": "(Ce,La,Ca)$_{9}$(Mg,Fe$^{+3}$)(SiO$_{4}$)$_{6}$(SiO$_{3}$OH)(OH)$_{3}$", "properties": [ { "scalars": [ { "value": "Silicate mineral group" } ], "name": "Category" }, { "scalars": [ { "value": "Clove-brown with a reddish tinge, pale lavender-brown-colorless in thin fragments" } ], "name": "Color" }, { "scalars": [ { "value": "Massive granular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal-ditrigonal pyramidal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "5-5.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-resinous" } ], "name": "Luster" }, { "scalars": [ { "value": "White-greyish white" } ], "name": "Streak" }, { "scalars": [ { "value": "4.7-4.86" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.806-1.810" } ], "name": "Refractive index (n$\\omega$)" }, { "scalars": [ { "value": "1.810-1.820" } ], "name": "Refractive index (n$\\epsilon$)" }, { "scalars": [ { "value": "0.010" } ], "name": "Birefringence" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Ceylonite", "title": "Wikipedia: Ceylonite" } ], "names": [ "Ceylonite" ], "chemicalFormula": "(Mg,Fe)Al$_{2}$O$_{4}$", "properties": [ { "scalars": [ { "value": "Oxide minerals, Spinel group, Spinel structural group" } ], "name": "Category" }, { "scalars": [ { "value": "Various, red-blue-mauve, dark green, brown, black" } ], "name": "Color" }, { "scalars": [ { "value": "Cubic, octahedral" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Isometric" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Indistinct" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal, uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "7.5-8.0" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.770-1.780" } ], "name": "Refractive index" }, { "scalars": [ { "value": "Absent" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.6-3.9" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "none" } ], "name": "Solubility" }, { "scalars": [ { "value": "Nonmagnetic, non-radioactive, sometimes fluorescent (red)" } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Beryllonite", "title": "Wikipedia: Beryllonite" } ], "names": [ "Beryllonite" ], "chemicalFormula": "NaBePO$_{4}$", "properties": [ { "scalars": [ { "value": "Phosphate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.AA.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "38.01.05.01" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Colorless, white-pale yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Crystals tabular {010}-short prismatic also in spherical aggregates, fibrous, massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic-Prismatic H-M Symbol (2/m) Space Group: P 2$_{1}$/n (Marked orthorhombic pseudo-symmetry)" } ], "name": "Crystal system" }, { "scalars": [ { "value": "polysynthetic, contact and penetration twins, pseudo-hexagonal stellate forms" } ], "name": "Twinning" }, { "scalars": [ { "value": "{010} perfect, {100} good, interrupted, {101} indistinct, {001} in traces" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5.5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-adamantine, may be pearly on {010}" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.8" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.552" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.558" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.561" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.009" } ], "name": "Birefringence" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Phosgenite", "title": "Wikipedia: Phosgenite" } ], "names": [ "Phosgenite" ], "chemicalFormula": "(PbCl)$_{2}$CO$_{3}$", "properties": [ { "scalars": [ { "value": "Carbonate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "05.BE.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "8.16" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8.883(6)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Pale yellow-yellowish brown, pale brown, smoky brown, smoky violet, colorless, pale rose, gray, yellowish gray, pale green" } ], "name": "Color" }, { "scalars": [ { "value": "Short prismatic crystals, granular, massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Tetragonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Distinct on {001} and {110}, indistinct on {100}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Sectile, flexible perpendicular-{001}" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2-3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "6.12-6.15" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.118" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "2.145" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.027" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Weakly pleochroic with O-reddish and E-greenish in thick sections." } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Fluoresces yellow under LW and SW UV" } ], "name": "fluorescence" }, { "scalars": [ { "value": "Soluble in dilute nitric acid with effervescence, decomposes slowly in cold water" } ], "name": "Solubility" }, { "scalars": [ { "value": "Tetragonal (4/m 2/m 2/m) ditetragonal dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Clinozoisite", "title": "Wikipedia: Clinozoisite" } ], "names": [ "Clinozoisite" ], "chemicalFormula": "Ca$_{2}$Al$_{3}$(Si$_{2}$O$_{7}$)(SiO$_{4}$)O(OH)", "properties": [ { "scalars": [ { "value": "Sorosilicates , Epidote group" } ], "name": "Category" }, { "scalars": [ { "value": "09.BG.05a" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "58.2.1a.4" } ], "name": "Dana classification" }, { "scalars": [ { "value": "8.879" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.583" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "10.155" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "115.50" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless, green, gray, light green, yellow green" } ], "name": "Color" }, { "scalars": [ { "value": "Elongated primatic crystals, striated, granular-fibrous" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Lamellar on {100} uncommon" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Irregular/uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "6-7" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "Grayish white" } ], "name": "Streak" }, { "scalars": [ { "value": "3.3-3.4" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.706-1.724" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.708-1.729" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.712-1.735" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.006-0.011" } ], "name": "Birefringence" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 2$_{1}$/m" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Seeligerite", "title": "Wikipedia: Seeligerite" } ], "names": [ "Seeligerite" ], "chemicalFormula": "Pb$_{3}$Cl$_{3}$(IO$_{3}$)O", "properties": [ { "scalars": [ { "value": "Iodate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "04.KB.15" } ], "name": "Strunz classification" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Cronstedtite", "title": "Wikipedia: Cronstedtite" } ], "names": [ "Cronstedtite" ], "chemicalFormula": "Fe$^{2+}$$_{2}$Fe$^{3+}$(Si,Fe$^{3+}$O$_{5}$)(OH)$_{4}$", "properties": [ { "scalars": [ { "value": "Silicate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "09.ED.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.486" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "7.095" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "1" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Black, dark brown-black, green-black" } ], "name": "Color" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Elastic" } ], "name": "Tenacity" }, { "scalars": [ { "value": "Sub-Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Dark olive green" } ], "name": "Streak" }, { "scalars": [ { "value": "3.34-3.35" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.720" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.800" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.800" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.080" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Visible" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Trigonal 3m ditrigonal pyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Gaylussite", "title": "Wikipedia: Gaylussite" } ], "names": [ "Gaylussite" ], "chemicalFormula": "Na$_{2}$Ca(CO$_{3}$)$_{2}$.5H$_{2}$O", "properties": [ { "scalars": [ { "value": "Carbonate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "05.CB.35" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Colorless, white, yellow, and grey" } ], "name": "Color" }, { "scalars": [ { "value": "Tabular prismatic crystals also granular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic 2/m" } ], "name": "Crystal system" }, { "scalars": [ { "value": "perfect [110]" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal, brittle" } ], "name": "Fracture" }, { "scalars": [ { "value": "2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.444" } ], "name": "Refractive index (n$\\alpha$)" }, { "scalars": [ { "value": "1.516" } ], "name": "Refractive index (n$\\beta$)" }, { "scalars": [ { "value": "1.523" } ], "name": "Refractive index (n$\\gamma$)" }, { "scalars": [ { "value": "0.079" } ], "name": "Birefringence" }, { "scalars": [ { "value": "white" } ], "name": "Streak" }, { "scalars": [ { "value": "1.93-1.99" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "decomposes in water" } ], "name": "Solubility" }, { "scalars": [ { "value": "efflorescent" } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Glauberite", "title": "Wikipedia: Glauberite" } ], "names": [ "Glauberite" ], "chemicalFormula": "Na$_{2}$Ca(SO$_{4}$)$_{2}$", "properties": [ { "scalars": [ { "value": "Sulfate minerals, anhydrous sulfate subgroup" } ], "name": "Category" }, { "scalars": [ { "value": "07.AD.25" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "10.129" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8.306" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "8.533" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "112.19" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Gray or pale yellow, colorless" } ], "name": "Color" }, { "scalars": [ { "value": "Tabular prismatic crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {001}, imperfect on {110}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2.5-3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-waxy, pearly on cleavages" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.75-2.85" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.507-1.515" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.527-1.535" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.529-1.536" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.022" } ], "name": "Birefringence" }, { "scalars": [ { "value": "HCl and H$_{2}$O soluble" } ], "conditions": [ { "scalars": [ { "value": "water" } ], "name": "Note" } ], "name": "Solubility" }, { "scalars": [ { "value": "often a pseudomorph" } ], "name": "Other" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "C 2/c" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Freieslebenite", "title": "Wikipedia: Freieslebenite" } ], "names": [ "Freieslebenite" ], "chemicalFormula": "AgPbSbS$_{3}$", "properties": [ { "scalars": [ { "value": "Sulfosalt minerals" } ], "name": "Category" }, { "scalars": [ { "value": "02.JB.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "7.518(1)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "12.809(4)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.940(1)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "92.25(1)" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Pale steel-gray-silver-white or lead-gray" } ], "name": "Color" }, { "scalars": [ { "value": "Striated, prismatic crystals, inclusions and exsolutions in galena and other silver minerals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Twin plane {010}" } ], "name": "Twinning" }, { "scalars": [ { "value": "{110} Indistinct" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle-conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Whitish-gray" } ], "name": "Streak" }, { "scalars": [ { "value": "6.20-6.23" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Very weak" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 2$_{1}$/n" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Childrenite", "title": "Wikipedia: Childrenite" } ], "names": [ "Childrenite" ], "chemicalFormula": "(Fe$^{2+}$,Mn$^{2+}$)AlPO$_{4}$(OH)$_{2}$.H$_{2}$O", "properties": [ { "scalars": [ { "value": "Phosphate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.DD.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "10.41" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "13.42" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.92" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "Yellowish brown, brown, clove-brown, colorless in transmitted light." } ], "name": "Color" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Poor/indistinct on {100}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Irregular/uneven, sub-conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, resinous" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.11-3.19" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.644-1.649" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.662-16.830" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.671-1.691" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.027-0.042" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Visible" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Soluble in acids." } ], "name": "Solubility" }, { "scalars": [ { "value": "mmm 2/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "Orthorhombic dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Parisite-(Ce)", "title": "Wikipedia: Parisite-(Ce)" } ], "names": [ "Parisite-(Ce)" ], "chemicalFormula": "Ca(Ce,La)$_{2}$(CO$_{3}$)$_{3}$F$_{2}$", "properties": [ { "scalars": [ { "value": "Carbonate" } ], "name": "Category" }, { "scalars": [ { "value": "05.BD.20b" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "16a.01.05.01" } ], "name": "Dana classification" }, { "scalars": [ { "value": "12.305" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "7.1056" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "28.2478" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "Brown, brownish yellow, gray-yellow, grayish yellow, yellow, waxy yellow, colourless-yellow in transmitted light" } ], "name": "Color" }, { "scalars": [ { "value": "Acicular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "4.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-greasy" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "4.34" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "4.38" } ], "name": "Density" }, { "scalars": [ { "value": "Monoclinic-m-Domatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Connellite", "title": "Wikipedia: Connellite" } ], "names": [ "Connellite" ], "chemicalFormula": "Cu$_{19}$(OH)$_{32}$(SO$_{4}$)Cl$_{4}$.3H$_{2}$O", "properties": [ { "scalars": [ { "value": "Halide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "03.DA.25" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "15.78" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "9.10" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Azure blue, blue green" } ], "name": "Color" }, { "scalars": [ { "value": "Clusters of divergent acicular crystals, fibrous, crusts" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "hexagonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Splintery" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "Pale green-blue" } ], "name": "Streak" }, { "scalars": [ { "value": "3.36-3.41" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.724-1.746" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.738-1.758" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.014" } ], "name": "Birefringence" }, { "scalars": [ { "value": "$\\bar{6}$ m2" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P $\\bar{6}$2c" } ], "name": "Space group" }, { "scalars": [ { "value": "Hexagonal ditrigonal dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Bismutite", "title": "Wikipedia: Bismutite" } ], "names": [ "Bismutite" ], "chemicalFormula": "Bi$_{2}$(CO$_{3}$)O$_{2}$", "properties": [ { "scalars": [ { "value": "Carbonate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "05.BE.25" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "16a.03.05.01" } ], "name": "Dana classification" }, { "scalars": [ { "value": "3.865" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "3.862" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "13.675" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Yellow-brown, greenish, green-grey, grey or black" } ], "name": "Color" }, { "scalars": [ { "value": "Very rare as platy crystals, typically radially fibrous-spheroidal, in crusts and earthy-dense massive aggregates" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "pseudo-merohedral twinning simulates tetragonal symmetry" } ], "name": "Twinning" }, { "scalars": [ { "value": "Distinct/Good on {001}" } ], "conditions": [ { "scalars": [ { "value": "microscopically observable" } ], "name": "Note" } ], "name": "Cleavage" }, { "scalars": [ { "value": "2.5-3.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, waxy, may be dull-earthy" } ], "name": "Luster" }, { "scalars": [ { "value": "Grey" } ], "name": "Streak" }, { "scalars": [ { "value": "6.7-7.4" }, { "value": "8.15" } ], "conditions": [ { "scalars": [ { "value": "measured" }, { "value": "calculated" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.12-2.15" } ], "name": "Refractive index (a)" }, { "scalars": [ { "value": "2.12-2.15" } ], "name": "Refractive index (b)" }, { "scalars": [ { "value": "2.28" } ], "name": "Refractive index (g)" }, { "scalars": [ { "value": "0.1300-0.1600" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Orthorhombic mm2-pyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Hisingerite", "title": "Wikipedia: Hisingerite" } ], "names": [ "Hisingerite" ], "chemicalFormula": "Fe$^{3+}$2Si2O5(OH)4.2H2O", "properties": [ { "scalars": [ { "value": "Silicate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "09.ED.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.4" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "9.03" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "14.99" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "98.32" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Black, brownish-black" } ], "name": "Color" }, { "scalars": [ { "value": "Massive, compact, acicular, may be minutely spherical." } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2.5-3.0" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, resinous, greasy" } ], "name": "Luster" }, { "scalars": [ { "value": "Yellowish brown, green" } ], "name": "Streak" }, { "scalars": [ { "value": "2.43-2.67" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.715" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.730" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.015" } ], "name": "Birefringence" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Calderite", "title": "Wikipedia: Calderite" } ], "names": [ "Calderite" ], "chemicalFormula": "(Mn$^{2+}$Ca)$_{3}$(Fe$^{3+}$Al)$_{2}$(SiO$_{4}$)$_{3}$", "properties": [ { "scalars": [ { "value": "Silicate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "8/A.08-40" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "51.4.3a.6" } ], "name": "Dana classification" }, { "scalars": [ { "value": "11.819" } ], "name": "Unit cell (a)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "brownish red-brownish yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Cubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "6.5-7.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "white" } ], "name": "Streak" }, { "scalars": [ { "value": "3.756" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.872" } ], "name": "Refractive index (n)" }, { "scalars": [ { "value": "Isometric-hexoctahedral (4/m $\\bar{3}$ 2/m)" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Ka\u0148kite", "title": "Wikipedia: Ka\u0148kite" } ], "names": [ "Ka\u0148kite" ], "chemicalFormula": "Fe$^{3+}$AsO$_{4}$.3.5(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Arsenate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "8.CE.60" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "18.803(15) b=17.490(18) c=7.633(5) z=16" } ], "name": "Unit cell (a)" }, { "scalars": [ { "value": "257.82" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "Yellowish-green" } ], "name": "Color" }, { "scalars": [ { "value": "Tabular spearlike crystals in spherulites and botryoidal encrustations" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "2-3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Dull-vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "Grayish yellow" } ], "name": "Streak" }, { "scalars": [ { "value": "2.60-2.70" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.664" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.680" } ], "name": "Refractive index (n$_{\\gamma}$)" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Pyroxferroite", "title": "Wikipedia: Pyroxferroite" } ], "names": [ "Pyroxferroite" ], "chemicalFormula": "(Fe$^{2+}$,Ca)SiO$_{3}$", "properties": [ { "scalars": [ { "value": "Inosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.DO.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Triclinic, space groupP1 or P$\\bar{1}$, ''a''=0.66213 nm, ''b''=0.75506 nm, ''c''=1.73806 nm, $\\alpha$=114.267$^{\\circ}$, $\\beta$=82.684$^{\\circ}$, $\\gamma$=94.756$^{\\circ}$, Z=14" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Good on (010), poor on (001)" } ], "name": "Cleavage" }, { "scalars": [ { "value": "4.5-5.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.748-1.756" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.750-1.758" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.767-1.768" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "Faint, pale yellow-yellow-orange" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.68-3.76 g/cm$^{3}$" } ], "conditions": [ { "scalars": [ { "value": "measured" } ], "name": "Note" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Roman\u00e8chite", "title": "Wikipedia: Roman\u00e8chite" } ], "names": [ "Roman\u00e8chite" ], "chemicalFormula": "(Ba,H$_{2}$O)$_{2}$(Mn$^{+4}$,Mn$^{+3}$)$_{5}$O$_{10}$", "properties": [ { "scalars": [ { "value": "Oxide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "04.DK.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Tetragonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "6-6.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Submetallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Blue-black" } ], "name": "Streak" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Lepidocrocite", "title": "Wikipedia: Lepidocrocite" } ], "names": [ "Lepidocrocite" ], "chemicalFormula": "$\\gamma$-FeO(OH)", "properties": [ { "scalars": [ { "value": "Oxide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "04.FE.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "3.88" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "12.54" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "3.07" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Ruby-red-reddish brown, light reddish-red-orange in transmitted light, gray-white in reflected light" } ], "name": "Color" }, { "scalars": [ { "value": "Flattened scales aggregated in-plumose groups and rosettes, massive, bladed-fibrous or micaceous" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{010} Perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "sub metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Dull orange" } ], "name": "Streak" }, { "scalars": [ { "value": "4" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.940" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "2.200" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "2.510" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.570" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Strong, X=colorless-yellow, Y=orange, yellow, dark red-orange, Z=orange, yellow, darker red-orange" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Orthorhombic (2/m 2/m 2/m)-dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Birnessite", "title": "Wikipedia: Birnessite" } ], "names": [ "Birnessite" ], "chemicalFormula": "(Na$_{0.3}$Ca$_{0.1}$K$_{0.1}$)(Mn$^{4+}$,Mn$^{3+}$)$_{2}$O$_{4}$.1.5H$_{2}$O", "properties": [ { "scalars": [ { "value": "Oxide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "04.FL.45" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "07.05.03.01" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Dark brown-black" } ], "name": "Color" }, { "scalars": [ { "value": "Rarely in platelets,-50 $\\mu$m, commonly extremely finely crystalline, spherulitic, cellular." } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic prismatic (pseudohexagonal) 2/m" } ], "name": "Crystal system" }, { "scalars": [ { "value": "[001] perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "1.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Sub-metallic, dull" } ], "name": "Luster" }, { "scalars": [ { "value": "1.730" } ], "name": "Refractive index (n$\\omega$)" }, { "scalars": [ { "value": "1.690" } ], "name": "Refractive index (n$\\epsilon$)" }, { "scalars": [ { "value": "0.040" } ], "name": "Birefringence" }, { "scalars": [ { "value": "3.0" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Identification by optical properties is impossible." } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Libethenite", "title": "Wikipedia: Libethenite" } ], "names": [ "Libethenite" ], "chemicalFormula": "Cu$_{2}$PO$_{4}$OH", "properties": [ { "scalars": [ { "value": "Phosphate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.BB.30" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Light-dark green, blackish green, olive-green" } ], "name": "Color" }, { "scalars": [ { "value": "Globular, druzy, slender prismatic" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Indistinct on [100] and [010]" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Irregular, uneven-conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, greasy" } ], "name": "Luster" }, { "scalars": [ { "value": "1.701-1.704" } ], "name": "Refractive index (n$\\alpha$)" }, { "scalars": [ { "value": "1.743-1.747" } ], "name": "Refractive index (n$\\beta$)" }, { "scalars": [ { "value": "1.787-1.790" } ], "name": "Refractive index (n$\\gamma$)" }, { "scalars": [ { "value": "light green" } ], "name": "Streak" }, { "scalars": [ { "value": "3.6-4" }, { "value": "" } ], "conditions": [ { "scalars": [ { "value": "Average=3.8" } ], "name": "Note" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Meionite", "title": "Wikipedia: Meionite" } ], "names": [ "Meionite" ], "chemicalFormula": "Ca$_{4}$Al$_{6}$Si$_{6}$O$_{24}$CO$_{3}$", "properties": [ { "scalars": [ { "value": "Tec-silicate
Scapolite group" } ], "name": "Category" }, { "scalars": [ { "value": "09.FB.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "12.179(1)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "7.571(1)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "Colorless, white, grey, pink, violet, blue, yellow, orange-brown, brown" } ], "name": "Color" }, { "scalars": [ { "value": "Tetragonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Distinct/good on {100}{110}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Irregular/uneven, conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, resinous, pearly" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.74-2.78" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Tetragonal 4/m-Dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Phoenicochroite", "title": "Wikipedia: Phoenicochroite" } ], "names": [ "Phoenicochroite" ], "chemicalFormula": "Pb$_{2}$O(CrO$_{4}$)", "properties": [ { "scalars": [ { "value": "Chromate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "07.FB.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "a: 14" } ], "units": "$\\AA$", "name": "Unit cell (a: 14)" }, { "scalars": [ { "value": "b: 5.67" } ], "units": "$\\AA$", "name": "Unit cell (b: 5.67)" }, { "scalars": [ { "value": "c: 7.13" } ], "units": "$\\AA$", "name": "Unit cell (c: 7.13)" }, { "scalars": [ { "value": "Dark red, bright red" } ], "name": "Color" }, { "scalars": [ { "value": "Tabular crystals, thin coatings, and massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {201}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Sectile" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine, resinous" } ], "name": "Luster" }, { "scalars": [ { "value": "Brick-red" } ], "name": "Streak" }, { "scalars": [ { "value": "7.01" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.380" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "2.440" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "2.650" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.270" } ], "conditions": [ { "scalars": [ { "value": "$\\delta$" } ], "name": "Note" } ], "name": "Birefringence" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "C 2/m" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Akagan\u00e9ite", "title": "Wikipedia: Akagan\u00e9ite" } ], "names": [ "Akagan\u00e9ite" ], "chemicalFormula": "Fe$^{3+}$O(OH,Cl)", "properties": [ { "scalars": [ { "value": "Oxide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "04.DK.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "10.561" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "3.031" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "10.483" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "Yellowish brown, rusty brown" } ], "name": "Color" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Earthy" } ], "name": "Luster" }, { "scalars": [ { "value": "Brownish yellow" } ], "name": "Streak" }, { "scalars": [ { "value": "3.52" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2/m-Prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Melilite", "title": "Wikipedia: Melilite" } ], "names": [ "Melilite" ], "chemicalFormula": "(Ca,Na)$_{2}$(Al,Mg,Fe$^{2+}$)[(Al,Si)SiO$_{7}$]", "properties": [ { "scalars": [ { "value": "Sorosilicates" } ], "name": "Category" }, { "scalars": [ { "value": "09.BB.**" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Yellowish, greenish brown" } ], "name": "Color" }, { "scalars": [ { "value": "Massive-granular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Tetragonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Distinct on {001}, weak on {110}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "5-5.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-greasy" } ], "name": "Luster" }, { "scalars": [ { "value": "white" } ], "name": "Streak" }, { "scalars": [ { "value": "2.9-3.0" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.632-1.669" } ], "name": "Refractive index (n$\\omega$)" }, { "scalars": [ { "value": "1.626-1.658" } ], "name": "Refractive index (n$\\epsilon$)" }, { "scalars": [ { "value": "0.006-0.011" } ], "name": "Birefringence" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Mesolite", "title": "Wikipedia: Mesolite" } ], "names": [ "Mesolite" ], "chemicalFormula": "Na$_{2}$Ca$_{2}$(Al$_{2}$Si$_{3}$O$_{10}$)$_{3}$.8H$_{2}$O", "properties": [ { "scalars": [ { "value": "Tec-silicate, Zeolite" } ], "name": "Category" }, { "scalars": [ { "value": "09.GA.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "18.4049(8)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "56.655(6)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.5443(4)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless, white, gray, yellowish" } ], "name": "Color" }, { "scalars": [ { "value": "As elongated prismatic crystals, commonly in hairlike tufts and aggregates of fibers, radiating compact masses, stalactitic, porcelaneous" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic-pyramidal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Characteristically twinned on {010} or {100}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {110} and {1$\\bar{1}$0}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle, masses-ugh" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, silky when fibrous" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.26" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.505" } ], "name": "Refractive index (n$\\alpha$)" }, { "scalars": [ { "value": "1.505" } ], "name": "Refractive index (n$\\beta$)" }, { "scalars": [ { "value": "1.505" } ], "name": "Refractive index (n$\\gamma$)" }, { "scalars": [ { "value": "0.001" } ], "name": "Birefringence" }, { "scalars": [ { "value": "May exhibit a small pyroelectric effect, piezoelectric" } ], "name": "Other" }, { "scalars": [ { "value": "Orthorhombic mm2" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Buddingtonite", "title": "Wikipedia: Buddingtonite" } ], "names": [ "Buddingtonite" ], "chemicalFormula": "NH$_{4}$AlSi$_{3}$O$_{8}$", "properties": [ { "scalars": [ { "value": "Silicate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "09.FA.30" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "8.57" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "13.03" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "7.18" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "112.73" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless" } ], "name": "Color" }, { "scalars": [ { "value": "Compact masses replacing plagioclase as pseudomorphs" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Good on {001}, distinct on {010}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "2.32" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.530" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.531" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.534" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.004" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Monoclinic 2 or 2/m sphenoidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Taenite", "title": "Wikipedia: Taenite" } ], "names": [ "Taenite" ], "chemicalFormula": "$\\gamma$-(Ni,Fe)", "properties": [ { "scalars": [ { "value": "Metals and intermetallic alloys" } ], "name": "Category" }, { "scalars": [ { "value": "01.AE.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "metallic grayish-white" } ], "name": "Color" }, { "scalars": [ { "value": "isometric-hexoctahedral" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Hackly fracture" } ], "name": "Fracture" }, { "scalars": [ { "value": "Malleable, flexible" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5-5.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "light gray" } ], "name": "Streak" }, { "scalars": [ { "value": "7.8-8.22" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "magnetic, not radioactive" } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Antlerite", "title": "Wikipedia: Antlerite" } ], "names": [ "Antlerite" ], "chemicalFormula": "Cu$_{3}$(SO$_{4}$)(OH)$_{4}$", "properties": [ { "scalars": [ { "value": "Sulfate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "07.BB.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Bright green, through darker greens-black" } ], "name": "Color" }, { "scalars": [ { "value": "tabular and acicular or fibrous. Also found as reniform, massive or granular specimens" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic bipyramidal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on [010]" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "3-3.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.726" } ], "name": "Refractive index (n$\\alpha$)" }, { "scalars": [ { "value": "1.738" } ], "name": "Refractive index (n$\\beta$)" }, { "scalars": [ { "value": "1.789" } ], "name": "Refractive index (n$\\gamma$)" }, { "scalars": [ { "value": "x: yellowish green y: bluish green z: bluish green" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Pale green" } ], "name": "Streak" }, { "scalars": [ { "value": "3.9" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Omphacite", "title": "Wikipedia: Omphacite" } ], "names": [ "Omphacite" ], "chemicalFormula": "(Ca,Na)(Mg,Fe$^{2+}$,Al)Si$_{2}$O$_{6}$", "properties": [ { "scalars": [ { "value": "Pyroxene" } ], "name": "Category" }, { "scalars": [ { "value": "09.DA.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "65.01.03b.01 clinopyroxene" } ], "name": "Dana classification" }, { "scalars": [ { "value": "9.66" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8.81" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.22" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "106.56" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Green-dark green, colorless-pale green in thin section" } ], "name": "Color" }, { "scalars": [ { "value": "Rarely in rough crystals, anhedral, granular-massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic-Prismatic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Single and polysynthetic twinning common on {100}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Good on {110}, {110} ^ {1$\\bar{1}$0} $\\in$87$^{\\circ}$, parting on {100}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven-conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-silky" } ], "name": "Luster" }, { "scalars": [ { "value": "Greenish white" } ], "name": "Streak" }, { "scalars": [ { "value": "3.16-3.43" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.662-1.701" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.670-1.712" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.685-1.723" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.023" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Weak, X=colorless, Y=very pale green, Z=very pale green, blue-green" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Monoclinic 2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Canfieldite", "title": "Wikipedia: Canfieldite" } ], "names": [ "Canfieldite" ], "chemicalFormula": "Ag$_{8}$SnS$_{6}$", "properties": [ { "scalars": [ { "value": "Sulfide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "02.BA.70" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Steel gray with reddish tint" } ], "name": "Color" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Irregular/ uneven, conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Greyish black" } ], "name": "Streak" }, { "scalars": [ { "value": "6.2-6.3" } ], "conditions": [ { "scalars": [ { "value": "g/cm$^{3}$" } ], "name": "Note" } ], "name": "Density" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Yttrium_iron_garnet", "title": "Wikipedia: Yttrium iron garnet" } ], "names": [ "Yttrium iron garnet" ], "chemicalFormula": "Y$_{3}$Fe$_{2}$(FeO$_{4}$)$_{3}$ or Y$_{3}$Fe$_{5}$O$_{12}$", "properties": [ { "scalars": [ { "value": "Synthetic mineral" } ], "name": "Category" }, { "scalars": [ { "value": "Green" } ], "name": "Color" }, { "scalars": [ { "value": "5.11" } ], "conditions": [ { "scalars": [ { "value": "g/cm$^3$" } ], "name": "Note" } ], "name": "Density" }, { "scalars": [ { "value": "Ferrimagnetic material" } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Triploidite", "title": "Wikipedia: Triploidite" } ], "names": [ "Triploidite" ], "chemicalFormula": "(Mn,Fe)2PO4OH", "properties": [ { "scalars": [ { "value": "Phosphate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.BB.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "12.36" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "13.27" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "9.94" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "108.23" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "16" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Red-brown, light pink, yellow-brown, light pink-light brown in transmitted light." } ], "name": "Color" }, { "scalars": [ { "value": "Elongated and striated prismatic crystals, fibrous: columnar-spherulitic" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "On {010}, good, on {120}, fair, on {110}, very poor." } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven-subconchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "4.5-5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine, vitreous, greasy" } ], "name": "Luster" }, { "scalars": [ { "value": "White, off-white." } ], "name": "Streak" }, { "scalars": [ { "value": "3.70" } ], "conditions": [ { "scalars": [ { "value": "measured" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.725" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.726" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.730" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.005" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Weak" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Soluble in acids." } ], "name": "Solubility" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 2$_{1}$/a" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Polarite", "title": "Wikipedia: Polarite" } ], "names": [ "Polarite" ], "chemicalFormula": "Pd,(Bi,Pb)", "properties": [ { "scalars": [ { "value": "Alloys with PGE" } ], "name": "Category" }, { "scalars": [ { "value": "02.AC.40" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "7.19" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8.69" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "10.68" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "16" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "White with yellowish tint" } ], "name": "Color" }, { "scalars": [ { "value": "Disseminated grains" } ], "conditions": [ { "scalars": [ { "value": "microscopic" } ], "name": "Note" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "3.5-4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "12.51" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "mm2" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "Ccm21" } ], "name": "Space group" }, { "scalars": [ { "value": "Orthorhombic pyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Galaxite", "title": "Wikipedia: Galaxite" } ], "names": [ "Galaxite" ], "chemicalFormula": "MnAl$_{2}$O$_{4}$", "properties": [ { "scalars": [ { "value": "Oxide minerals, Spinel group, Normal Spinel structural group" } ], "name": "Category" }, { "scalars": [ { "value": "04.BB.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "8.271" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Black, red-brown, red-yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Octahedra and rounded grains and exolution blebs" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "isometric/Cubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Spinel law with {111} as both twin and composition plane" } ], "name": "Twinning" }, { "scalars": [ { "value": "Indistinct-none" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal-irregular" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "7.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "Red-brown" } ], "name": "Streak" }, { "scalars": [ { "value": "4.234" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.923" } ], "name": "Refractive index (n)" }, { "scalars": [ { "value": "weakly-moderately magnetic" } ], "name": "Other" }, { "scalars": [ { "value": "Isometric (4/m $\\bar{3}$ 2/m) hexoctahedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Combeite", "title": "Wikipedia: Combeite" } ], "names": [ "Combeite" ], "chemicalFormula": "Na$_{2}$Ca$_{2}$Si$_{3}$O$_{9}$", "properties": [ { "scalars": [ { "value": "Silicate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "09.CJ.15a" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "10.42" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "13.14" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "Colorless" } ], "name": "Color" }, { "scalars": [ { "value": "S-ut prisms" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.844" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.598" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.598" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.000" } ], "name": "Birefringence" }, { "scalars": [ { "value": "3 2" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 3$_{2}$21" } ], "name": "Space group" }, { "scalars": [ { "value": "Trigonal trapezohedral" } ], "name": "Symmetry" }, { "scalars": [ { "value": "P 3$_{1}$21" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Franckeite", "title": "Wikipedia: Franckeite" } ], "names": [ "Franckeite" ], "chemicalFormula": "(Pb,Sn$^{2+}$)$_{6}$Fe$^{2+}$Sn$_{2}$Sb$_{2}$S$_{14}$", "properties": [ { "scalars": [ { "value": "Sulfosalt mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.HF.25b" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "03.01.04.02" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Grayish black" } ], "name": "Color" }, { "scalars": [ { "value": "Typically in spherical, rosette aggregates of thin plates, commonly massive, radiated, or foliated" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Triclinic-Pinacoidal H-M Symbol ($\\bar{1}$) Space Group: P$\\bar{1}$" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Complex" } ], "name": "Twinning" }, { "scalars": [ { "value": "{010}, perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Flexible, inelastic, slightly malleable" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2.5-3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Grayish black" } ], "name": "Streak" }, { "scalars": [ { "value": "5.88-5.92" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Weak" } ], "name": "Pleochroism" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Nenadkevichite", "title": "Wikipedia: Nenadkevichite" } ], "names": [ "Nenadkevichite" ], "chemicalFormula": "(Na,Ca)(Nb,Ti)Si$_{2}$O$_{7}$.2H$_{2}$O", "properties": [ { "scalars": [ { "value": "Cyclosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.CE.30a" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Rose-pink, very light pink, light yellow, brown, dark brown due-inclusions" } ], "name": "Color" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Poor/ indistinct" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Irregular/ uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, dull" } ], "name": "Luster" }, { "scalars": [ { "value": "White, very light rose-pink" } ], "name": "Streak" }, { "scalars": [ { "value": "2.78-2.885 g/cm$^{3}$" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Xifengite", "title": "Wikipedia: Xifengite" } ], "names": [ "Xifengite" ], "chemicalFormula": "Fe$_{5}$Si$_{3}$", "properties": [ { "scalars": [ { "value": "Native element minerals" } ], "name": "Category" }, { "scalars": [ { "value": "01.BB.40" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "6.759(5)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "4.720(5)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Gray, steel-black" } ], "name": "Color" }, { "scalars": [ { "value": "As inclusions" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Hexagonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Black" } ], "name": "Streak" }, { "scalars": [ { "value": "6/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 6$_{3}$/mcm" } ], "name": "Space group" }, { "scalars": [ { "value": "Hexagonal dihexagonal dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Zaratite", "title": "Wikipedia: Zaratite" } ], "names": [ "Zaratite" ], "chemicalFormula": "Ni$_{3}$CO$_{3}$(OH)$_{4}$.4H$_{2}$O", "properties": [ { "scalars": [ { "value": "Carbonates" } ], "name": "Category" }, { "scalars": [ { "value": "05.DA.70" } ], "name": "Strunz classification" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Hellyerite", "title": "Wikipedia: Hellyerite" } ], "names": [ "Hellyerite" ], "chemicalFormula": "NiCO$_{3}$.6(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Carbonate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "05.CA.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "10.77" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "7.29" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "18.68" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "94: Z=8" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "Pale blue" } ], "name": "Color" }, { "scalars": [ { "value": "As crystal fragments and microcrystalline coatings," } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Fine lamellar parallel-cleavage" } ], "name": "Twinning" }, { "scalars": [ { "value": "One perfect, two good at 112$^{\\circ}$-each other and perpendicular-the perfect cleavage" } ], "name": "Cleavage" }, { "scalars": [ { "value": "2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.97" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.455" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.503" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.549" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.094" } ], "name": "Birefringence" }, { "scalars": [ { "value": "X=Y=very pale greenish blue, Z=pale greenish blue" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Monoclinic 2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Asisite", "title": "Wikipedia: Asisite" } ], "names": [ "Asisite" ], "chemicalFormula": "Pb$_{7}$SiO$_{4}$O$_{4}$Cl$_{2}$", "properties": [ { "scalars": [ { "value": "Halide" } ], "name": "Category" }, { "scalars": [ { "value": "03.DB.40" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "3.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "tetragonal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Xonotlite", "title": "Wikipedia: Xonotlite" } ], "names": [ "Xonotlite" ], "chemicalFormula": "Ca$_{6}$Si$_{6}$O$_{17}$(OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Amphibole-Inosilicates" } ], "name": "Category" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Mohite", "title": "Wikipedia: Mohite" } ], "names": [ "Mohite" ], "chemicalFormula": "Cu$_{2}$SnS$_{3}$", "properties": [ { "scalars": [ { "value": "Sulfide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "2.CB.15b" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "6.64" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "11.51" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "19.93" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "109.75" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "12" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Gray with a greenish tint" } ], "name": "Color" }, { "scalars": [ { "value": "Microscopic grains" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Triclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Gray" } ], "name": "Streak" }, { "scalars": [ { "value": "4.86" } ], "conditions": [ { "scalars": [ { "value": "calculated" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P1" } ], "name": "Space group" }, { "scalars": [ { "value": "Triclinic pedial" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Hilgardite", "title": "Wikipedia: Hilgardite" } ], "names": [ "Hilgardite" ], "chemicalFormula": "Ca$_{2}$B$_{5}$O$_{9}$Cl.H$_{2}$O", "properties": [ { "scalars": [ { "value": "Tek-borates" } ], "name": "Category" }, { "scalars": [ { "value": "06.ED.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "6.297" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "6.464" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.565" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "74.24" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\alpha$)" }, { "scalars": [ { "value": "61.68" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "61.26" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\gamma$)" }, { "scalars": [ { "value": "1" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless, light pink-reddish brown" } ], "name": "Color" }, { "scalars": [ { "value": "Tabular triangular crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Triclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{010}, perfect, {100}, good" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "5" } ], "name": "Mohs scale hardness" }, { 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"08.CE.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "39.01.07.01" } ], "name": "Dana classification" }, { "scalars": [ { "value": "7.472" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "10.891" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "16.585" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "White" } ], "name": "Color" }, { "scalars": [ { "value": "Cryp-crystalline crusts" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{001} Perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Irregular/uneven, splintery" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "Silky, dull, earthy" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": 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"name": "Specific gravity" }, { "scalars": [ { "value": "1.580-1.590" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.580-1.590" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.590-1.600" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.010" } ], "name": "Birefringence" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "C 2/m" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Chloritoid", "title": "Wikipedia: Chloritoid" } ], "names": [ "Chloritoid" ], "chemicalFormula": "(Fe,Mg,Mn)$_{2}$Al$_{4}$Si$_{2}$O$_{10}$(OH)$_{4}$", "properties": [ { "scalars": [ { "value": "Nesosilicates" } ], "name": "Category" }, { "scalars": [ { "value": "09.AF.85" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "52.03.03.01" } ], "name": "Dana classification" }, { "scalars": [ { "value": "9.50" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.50" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "18.22" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "101.9" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4 or" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "9.46" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.50" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "9.15" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "97.05 $\\beta$=101.56 $\\gamma$=90.10" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\alpha$)" }, { "scalars": [ { "value": "Dark gray, greenish gray, greenish black" } ], "name": "Color" }, { "scalars": [ { "value": "Tabular 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"1.723-1.740" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.010" } ], "name": "Birefringence" }, { "scalars": [ { "value": "X=olive-green-yellow, Y=grayish blue-blue, Z=colorless-pale greenish yellow" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Monoclinic prismatic 2/m or triclinic pinacoidal $\\bar{1}$" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Clinoptilolite", "title": "Wikipedia: Clinoptilolite" } ], "names": [ "Clinoptilolite" ], "chemicalFormula": "(Na,K,Ca)$_{2-3}$Al$_{3}$(Al,Si)$_{2}$Si$_{13}$O$_{36}$.12H$_{2}$O", "properties": [ { "scalars": [ { "value": "Tec-silicates , Zeolites" } ], "name": "Category" }, { "scalars": [ { "value": "09.GE.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "3.5-4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Cylindrite", "title": "Wikipedia: Cylindrite" } ], "names": [ "Cylindrite" ], "chemicalFormula": "Pb$_{3}$Sn$_{4}$FeSb$_{2}$S$_{14}$", "properties": [ { "scalars": [ { "value": "Sulfosalt minerals" } ], "name": "Category" }, { "scalars": [ { "value": "02.HF.25a" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "03.01.04.01" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Cylindrical" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Triclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {100}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Malleable" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2 .5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Black" } ], "name": "Streak" 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"Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-Pearly" } ], "name": "Luster" }, { "scalars": [ { "value": "very weak,colorless-rose-red" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "white" } ], "name": "Streak" }, { "scalars": [ { "value": "3.05" } ], "name": "Density" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Grunerite", "title": "Wikipedia: Grunerite" } ], "names": [ "Grunerite" ], "chemicalFormula": "Fe$_{7}$Si$_{8}$O$_{22}$(OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Inosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.DE.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Ashen, brown, brownish green, dark gray" } ], "name": "Color" }, { "scalars": [ { "value": "Columnar" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "5-6" } ], "name": "Mohs scale hardness" }, { 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"url": "https://en.wikipedia.org/wiki/Idrialite", "title": "Wikipedia: Idrialite" } ], "names": [ "Idrialite" ], "chemicalFormula": "C$_{22}$H$_{14}$", "properties": [ { "scalars": [ { "value": "Organic mineral" } ], "name": "Category" }, { "scalars": [ { "value": "10.BA.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "50.03.08.01" } ], "name": "Dana classification" }, { "scalars": [ { "value": "8.07" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "6.42" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "27.75" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Greenish yellow, light brown, colorless" } ], "name": "Color" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{001}, perfect, {100}, poor" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } 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"Category" }, { "scalars": [ { "value": "07.CC.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "29.5.4.1" } ], "name": "Dana classification" }, { "scalars": [ { "value": "440.26" } ], "units": "g/mol", "name": "Molecular weight" }, { "scalars": [ { "value": "colorless" } ], "name": "Color" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{100} good, {001} indistinct, {010} indistinct" } ], "name": "Cleavage" }, { "scalars": [ { "value": "3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "white" } ], "name": "Streak" }, { "scalars": [ { "value": "1.74" } ], "conditions": [ { "scalars": [ { "value": "g/cm$^{3}$" } ], "name": "Note" } ], "name": "Density" }, { "scalars": [ { "value": "1.449" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.461" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.463" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "''''=0.014" } ], "name": "Birefringence" }, { "scalars": [ { "value": "soluble" } ], "name": "Solubility" }, { "scalars": [ { "value": "2/m-Prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Seligmannite", "title": "Wikipedia: Seligmannite" } ], "names": [ "Seligmannite" ], "chemicalFormula": "PbCuAsS$_{3}$", "properties": [ { "scalars": [ { "value": "Sulfide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "02.GA.50" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "441.87" } ], "units": "gm", "name": "Molecular weight" }, { "scalars": [ { "value": "Lead gray-black" } ], "name": "Color" }, { "scalars": [ { "value": "Massive-Crystalline" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic-Dipyramidal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "on {110} very common" } ], "name": "Twinning" }, { "scalars": [ { "value": "Indistinct on the {001}, {100}, and {010}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Black-chocolate brown" } ], "name": "Streak" }, { "scalars": [ { "value": "5.38-5.44" } ], "conditions": [ { "scalars": [ { "value": "g/cm$_{3}$" } ], "name": "Note" } ], "name": "Density" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Stilleite", "title": "Wikipedia: Stilleite" } ], "names": [ "Stilleite" ], "chemicalFormula": "ZnSe", "properties": [ { "scalars": [ { "value": "Selenide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.CB.05a" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.667" } ], "name": "Unit cell (a)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Gray" } ], "name": "Color" }, { "scalars": [ { "value": "Cubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "5.42" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "About" } ], "name": "Refractive index" }, { "scalars": [ { "value": "2.5" } ], "name": "Refractive index" }, { "scalars": [ { "value": "$\\bar{4}$3m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "F$\\bar{4}$3m" } ], "name": "Space group" }, { "scalars": [ { "value": "Isometric hextetrahedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Shattuckite", "title": "Wikipedia: Shattuckite" } ], "names": [ "Shattuckite" ], "chemicalFormula": "Cu$_{5}$(SiO$_{3}$)$_{4}$(OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Inosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.DB.40" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Dark and light blue, turquoise" } ], "name": "Color" }, { "scalars": [ { "value": "Commonly spherulitic aggregates of acicular crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "perfect along [010] and [100]" } ], "name": "Cleavage" }, { "scalars": [ { "value": "uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "3.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Dull-silky" } ], "name": "Luster" }, { "scalars": [ { "value": "1.753" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.782" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.815" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "X=very pale blue, Y=pale blue, Z=deep blue" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Blue" } ], "name": "Streak" }, { "scalars": [ { "value": "4.1" } ], "conditions": [ { "scalars": [ { "value": "rather heavy for a non-metallic mineral" } ], "name": "Note" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Steacyite", "title": "Wikipedia: Steacyite" } ], "names": [ "Steacyite" ], "chemicalFormula": "K$_{variable}$(Ca,Na)$_{2}$(Th,U)Si$_{8}$O$_{20}$", "properties": [ { "scalars": [ { "value": "Cyclosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.CH.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Gray, dark brown, green, beige" } ], "name": "Color" }, { "scalars": [ { "value": "Tetragonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, greasy, dull" } ], "name": "Luster" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Stichtite", "title": "Wikipedia: Stichtite" } ], "names": [ "Stichtite" ], "chemicalFormula": "Mg$_{6}$Cr$_{2}$CO$_{3}$(OH)$_{16}$.4H$_{2}$O", "properties": [ { "scalars": [ { "value": "Carbonate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "05.DA.50" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "6.19" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "46.47" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "3" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Fibrous-platy aggregates" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {0001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "\\xef\\xac\\x82exible, not elastic" } ], "name": "Tenacity" }, { "scalars": [ { "value": "1.5-2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Waxy-resinous" } ], "name": "Luster" }, { "scalars": [ { "value": "Very pale lilac-white" } ], "name": "Streak" }, { "scalars": [ { "value": "2.16" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.516" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.542" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.026" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Weak, O=dark rose-pink-lilac E=light rose-pink-lilac" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "$\\bar{3}$2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "R $\\bar{3}$m" } ], "name": "Space group" }, { "scalars": [ { "value": "Trigonal-hexagonal scalenohedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Stolzite", "title": "Wikipedia: Stolzite" } ], "names": [ "Stolzite" ], "chemicalFormula": "PbWO$_{4}$", "properties": [ { "scalars": [ { "value": "Tungstate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "07.GA.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.461" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "12.049" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Reddish brown, brown, yellowish gray, smoky gray, straw-yellow, lemon-yellow, may be green, orange, red" } ], "name": "Color" }, { "scalars": [ { "value": "Crystals dipyramidal-tabular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Tetragonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Imperfect on {001}, indistinct on {011}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal-uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2.5-3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Resinous, subadamantine" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "8.34" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.270" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "2.180-2.190" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.090" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Tetragonal 4/m-dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Stromeyerite", "title": "Wikipedia: Stromeyerite" } ], "names": [ "Stromeyerite" ], "chemicalFormula": "AgCuS", "properties": [ { "scalars": [ { "value": "Sulfide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "02.BA.40" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Jacobsite", "title": "Wikipedia: Jacobsite" } ], "names": [ "Jacobsite" ], "chemicalFormula": "iron(II,III) manganese oxide, MnFe$_{2}$O$_{4}$", "properties": [ { "scalars": [ { "value": "Oxide minerals, Spinel group, Spinel structural group" } ], "name": "Category" }, { "scalars": [ { "value": "04.BB.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "8.457" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Black-brownish black" } ], "name": "Color" }, { "scalars": [ { "value": "Disseminated-massive, rarely as octahedral crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Isometric Hexoctahedral" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Spinel law, flattened on {111} or lamellar" } ], "name": "Twinning" }, { "scalars": [ { "value": "{111}, probably a parting" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "5.5-6.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "~\\xef\\xbf\\xbd2.3" } ], "name": "Refractive index" }, { "scalars": [ { "value": "reddish black-brown" } ], "name": "Streak" }, { "scalars": [ { "value": "4.76" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Isometric (4/m 3 2/m)" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Terlinguaite", "title": "Wikipedia: Terlinguaite" } ], "names": [ "Terlinguaite" ], "chemicalFormula": "Hg$_{2}$ClO", "properties": [ { "scalars": [ { "value": "3.DD.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "19.51" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.91" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "9.47" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "143.81" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Sulfur-yellow, greenish yellow, brown" } ], "name": "Color" }, { "scalars": [ { "value": "Aggregates of equant-elongated crystals, powdery, massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on [$\\bar{1}$01]" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Brilliant adamantine" } ], "name": "Luster" }, { "scalars": [ { "value": "Lemon-yellow, turning olive-green" } ], "name": "Streak" }, { "scalars": [ { "value": "9.22" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.350" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "2.640" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "2.660" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.310" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Weak, green and yellow" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "C 2/c" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Tiemannite", "title": "Wikipedia: Tiemannite" } ], "names": [ "Tiemannite" ], "chemicalFormula": "HgSe", "properties": [ { "scalars": [ { "value": "Selenide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.CB.05a" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "02.08.02.04" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Steel-gray-black" } ], "name": "Color" }, { "scalars": [ { "value": "Massive and as euhedral crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Isometric-hextetrahedral ($\\bar{4}$ 3m)" } ], "name": "Crystal system" }, { "scalars": [ { "value": "none" } ], "name": "Cleavage" }, { "scalars": [ { "value": "2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "grayish black" } ], "name": "Streak" }, { "scalars": [ { "value": "8.19-8.47" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Tellurobismuthite", "title": "Wikipedia: Tellurobismuthite" } ], "names": [ "Tellurobismuthite" ], "chemicalFormula": "Bi$_{2}$Te$_{3}$", "properties": [ { "scalars": [ { "value": "Sulfide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.DC.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "4.43" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "29.91" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "3" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Pale lead-gray, white in polished section" } ], "name": "Color" }, { "scalars": [ { "value": "Foliated masses and irregular plates" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {0001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Flexible, sectile" } ], "name": "Tenacity" }, { "scalars": [ { "value": "1.5-2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Lead gray" } ], "name": "Streak" }, { "scalars": [ { "value": "7.815" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "$\\bar{3}$2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "R$\\bar{3}$m" } ], "name": "Space group" }, { "scalars": [ { "value": "Trigonal-hexagonal scalenohedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Tschermigite", "title": "Wikipedia: Tschermigite" } ], "names": [ "Tschermigite" ], "chemicalFormula": "NH$_{4}$AlSO$_{4}$.12(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Sulfate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "07.CC.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "12.215" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless, white, colorless in transmitted light" } ], "name": "Color" }, { "scalars": [ { "value": "Octahedral crystals, fibrous columnar, powdery" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Isometric" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {100}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "1.5-2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, silky" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "1.645" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.458" } ], "name": "Refractive index" }, { "scalars": [ { "value": "Anomalously birefringent" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Deliquescent" } ], "name": "Solubility" }, { "scalars": [ { "value": "2/m$\\bar{3}$" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P a3m3" } ], "name": "Space group" }, { "scalars": [ { "value": "Isometric diploidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Whitlockite", "title": "Wikipedia: Whitlockite" } ], "names": [ "Whitlockite" ], "chemicalFormula": "Ca$_{9}$(Mg,Fe++)(PO$_{4}$)$_{6}$(PO$_{3}$OH)", "properties": [ { "scalars": [ { "value": "Phosphate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.AC.45" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Colorless, gray-white, light pink, light yellow" } ], "name": "Color" }, { "scalars": [ { "value": "rhombohedral crystals, often tabular, massive, microcrystalline crusts and as cave pearls\"\"" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal, 3m-ditrigonal pyramidal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-resinous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.629" } ], "name": "Refractive index (n$\\omega$)" }, { "scalars": [ { "value": "1.626" } ], "name": "Refractive index (n$\\epsilon$)" }, { "scalars": [ { "value": "0.003" } ], "name": "Birefringence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.13" } ], "name": "Density" }, { "scalars": [ { "value": "Piezoelectric and pyroelectric" } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Zabuyelite", "title": "Wikipedia: Zabuyelite" } ], "names": [ "Zabuyelite" ], "chemicalFormula": "Li$_{2}$CO$_{3}$", "properties": [ { "scalars": [ { "value": "Carbonate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "05.AA.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Colorless" } ], "name": "Color" }, { "scalars": [ { "value": "Monoclinic (2/m), Space group: C2/c" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{100} perfect, {011} good" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "1.4285" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.5672" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.5743" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.1458" } ], "name": "Birefringence" }, { "scalars": [ { "value": "none" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.09" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Zhanghengite", "title": "Wikipedia: Zhanghengite" } ], "names": [ "Zhanghengite" ], "chemicalFormula": "CuZn", "properties": [ { "scalars": [ { "value": "01.AB.10a" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Golden yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Isometric-Hexoctahedral" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "3.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "bronze" } ], "name": "Streak" }, { "scalars": [ { "value": "3.92" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Zanazziite", "title": "Wikipedia: Zanazziite" } ], "names": [ "Zanazziite" ], "chemicalFormula": "Ca$_{2}$(Mg,Fe)(Mg,Fe,Mn,Al)$_{4}$Be$_{4}$(OH)$_{4}$(PO$_{4}$)$_{6}$.6H$_{2}$O", "properties": [ { "scalars": [ { "value": "Phosphate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "1044.11" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "08.DA.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Pale-dark olive green" } ], "name": "Color" }, { "scalars": [ { "value": "Bladed, columnar, prismatic" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Good on [100], distinct on [010]" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Fracture" }, { "scalars": [ { "value": "5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-pearly" } ], "name": "Luster" }, { "scalars": [ { "value": "1.606(2)" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.610" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.620" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "None" } ], "name": "fluorescence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.76" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Ziesite", "title": "Wikipedia: Ziesite" } ], "names": [ "Ziesite" ], "chemicalFormula": "$\\beta$-Cu$_{2}$V$_{2}$O$_{7}$", "properties": [ { "scalars": [ { "value": "Vanadate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "8.FA.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "7.68" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "10.09" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "110.27" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Black, reddish brown-dark reddish brown in transmitted light, white in reflected light" } ], "name": "Color" }, { "scalars": [ { "value": "Anhedral crystals and incrustations" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Red brown" } ], "name": "Streak" }, { "scalars": [ { "value": "3.86" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.055" } ], "name": "Refractive index" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "A2/a" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Fraipontite", "title": "Wikipedia: Fraipontite" } ], "names": [ "Fraipontite" ], "chemicalFormula": "(Zn,Al)$_{3}$(Si,Al)$_{2}$O$_{5}$(OH)$_{4}$", "properties": [ { "scalars": [ { "value": "Phyllosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.ED.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.34" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "9.21" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "14.12" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "93.2" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Blueish, yellow white light green" } ], "name": "Color" }, { "scalars": [ { "value": "Fibrous-porcelaneous massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "3.5-4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Silky" } ], "name": "Luster" }, { "scalars": [ { "value": "White-pale green" } ], "name": "Streak" }, { "scalars": [ { "value": "3.08-3.10" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.620" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.624" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.624" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.004" } ], "name": "Birefringence" }, { "scalars": [ { "value": "m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "Cm" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic domatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Zincochromite", "title": "Wikipedia: Zincochromite" } ], "names": [ "Zincochromite" ], "chemicalFormula": "ZnCr$_{2}$O$_{4}$", "properties": [ { "scalars": [ { "value": "Spinel group" } ], "name": "Category" }, { "scalars": [ { "value": "04.BB.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "8.32" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Brownish black" } ], "name": "Color" }, { "scalars": [ { "value": "Zoned euhedral crystals with hexagonal outline" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Cubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "5.8" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Semimetallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Brown" } ], "name": "Streak" }, { "scalars": [ { "value": "Weakly paramagnetic" } ], "name": "Other" }, { "scalars": [ { "value": "Isometric hexoctahedral (4/m $\\bar{3}$ 2/m)" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Uranopilite", "title": "Wikipedia: Uranopilite" } ], "names": [ "Uranopilite" ], "chemicalFormula": "(UO$_{2}$)$_{6}$SO$_{4}$(OH)$_{6}$O$_{2}$.12H$_{2}$O", "properties": [ { "scalars": [ { "value": "Sulfate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "07.EA.05" } ], "name": "Strunz classification" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Studtite", "title": "Wikipedia: Studtite" } ], "names": [ "Studtite" ], "chemicalFormula": "UO$_{4}$.4(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Oxide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "04.GA.15 Uranyl hydroxides" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "05.03.01.01" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Yellow-pale yellow, nearly colorless in transmitted light" } ], "name": "Color" }, { "scalars": [ { "value": "Needlelike crystals in radial fibrous aggregates and crusts" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic-Prismatic H-M Symbol (2/m) Space Group: C 2/m" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Flexible" } ], "name": "Tenacity" }, { "scalars": [ { "value": "1-2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, waxy" } ], "name": "Luster" }, { "scalars": [ { "value": "Light yellow" } ], "name": "Streak" }, { "scalars": [ { "value": "3.58" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.545" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.555" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.680" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.135" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Non-fluorescent" } ], "name": "fluorescence" }, { "scalars": [ { "value": "Radioactive" } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Lawsonite", "title": "Wikipedia: Lawsonite" } ], "names": [ "Lawsonite" ], "chemicalFormula": "CaAl$_{2}$Si$_{2}$O$_{7}$(OH)$_{2}$.H$_{2}$O", "properties": [ { "scalars": [ { "value": "Sorosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.BE.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.847" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8.79" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "13.128" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless, white, pale blue-grayish blue" } ], "name": "Color" }, { "scalars": [ { "value": "Commonly prismatic, tabular, also granular, massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Common on {101} lamellar" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {100} and {010}, imperfect on {101}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "7.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, greasy" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "=3.05-3.12" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.665" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.672-1.676" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.684-1.686" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.019-0.021" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Weak, X=blue, pale brownish yellow, Y=deep bluish green, yellowish green, Z=colorless, yellowish" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "2/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "Ccmm" } ], "name": "Space group" }, { "scalars": [ { "value": "Orthorhombic dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Gagarinite-(Ce)", "title": "Wikipedia: Gagarinite-(Ce)" } ], "names": [ "Gagarinite-(Ce)" ], "chemicalFormula": "Na(REE$_{x}$Ca$_{1-x}$)(REE$_{y}$Ca$_{1-y}$)F$_{6}$", "properties": [ { "scalars": [ { "value": "Halide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "03.AB.35" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "6.099" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "11.064" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "3" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless, pale pink, orange" } ], "name": "Color" }, { "scalars": [ { "value": "Granular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "4.44-4.55" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.483" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.503" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.020" } ], "name": "Birefringence" }, { "scalars": [ { "value": "$\\bar{3}$" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P$\\bar{3}$" } ], "name": "Space group" }, { "scalars": [ { "value": "Trigonal-rhombohedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Chapmanite", "title": "Wikipedia: Chapmanite" } ], "names": [ "Chapmanite" ], "chemicalFormula": "Na(REE$_{x}$Ca$_{1-x}$)(REE$_{y}$Ca$_{1-y}$)F$_{6}$", "properties": [ { "scalars": [ { "value": "Phyllosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.ED.25" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Yellow, green, olive green" } ], "name": "Color" }, { "scalars": [ { "value": "Earthy massive, granular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic-domatic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Poor" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal-irregular" } ], "name": "Fracture" }, { "scalars": [ { "value": "2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Nonmetallic, dull-adamantine" } ], "name": "Luster" }, { "scalars": [ { "value": "1.850" } ], "name": "Refractive index (n$\\alpha$)" }, { "scalars": [ { "value": "1.950" } ], "name": "Refractive index (n$\\beta$)" }, { "scalars": [ { "value": "1.960" } ], "name": "Refractive index (n$\\gamma$)" }, { "scalars": [ { "value": "None" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Yellowish green" } ], "name": "Streak" }, { "scalars": [ { "value": "3.69-3.75" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Legrandite", "title": "Wikipedia: Legrandite" } ], "names": [ "Legrandite" ], "chemicalFormula": "Zn$_{2}$(AsO$_{4}$)(OH).(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Arsenate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "12.805(2)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "7.933(1)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "10.215(2)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "104.23" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "08.DC.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Bright yellow, wax-yellow, colorless" } ], "name": "Color" }, { "scalars": [ { "value": "Crystalline, prismatic, typically in sprays or sheaflike aggregates" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Imperfect, poor one {100}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "4.5-5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.675-1.702" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.690-1.709" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.735-1.740" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.060" } ], "name": "Birefringence" }, { "scalars": [ { "value": "X=Y=Colorless-yellow Z=Yellow" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.98-4.01" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 2$_{1}$/c" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Papagoite", "title": "Wikipedia: Papagoite" } ], "names": [ "Papagoite" ], "chemicalFormula": "CaCuAlSi$_{2}$O$_{6}$(OH)$_{3}$", "properties": [ { "scalars": [ { "value": "Cyclosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.CE.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "12.92" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "11.49" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "4.69" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "100.81" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Dark blue crystals, light blue when massive" } ], "name": "Color" }, { "scalars": [ { "value": "Massive, cryp-crystalline, forming flat elongated crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic-prismatic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Imperfect in one direction" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Fracture" }, { "scalars": [ { "value": "5-5.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-dull" } ], "name": "Luster" }, { "scalars": [ { "value": "1.607" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.641" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.672" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.065" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Trichroic" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Light blue" } ], "name": "Streak" }, { "scalars": [ { "value": "3.25" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Monoclinic 2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Rosasite", "title": "Wikipedia: Rosasite" } ], "names": [ "Rosasite" ], "chemicalFormula": "(Cu,Zn)$_{2}$(CO$_{3}$)(OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Carbonate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "12.873(3)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "9.354(3)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "3.156(2)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "110.36(3)" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "05.BA.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Blue, bluish green, green" } ], "name": "Color" }, { "scalars": [ { "value": "Acicular crystals as radiating fibrous clusters, botryoidal, mammillary, encrustations" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "On {100}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {100} and {010}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Splintery, fibrous" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Silky, vitreous-dull" } ], "name": "Luster" }, { "scalars": [ { "value": "1.672-1.688" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.796-1.830" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.811-1.831" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.139-0.143" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Strong: X=pale emerald green or colourless, Y=dark emerald green or pale blue, Z=dark emerald green or pale blue" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Light blue or green" } ], "name": "Streak" }, { "scalars": [ { "value": "4-4.2" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Effervesces in cold, dilute hydrochloric acid" } ], "name": "Solubility" }, { "scalars": [ { "value": "P21/a" } ], "name": "Space group" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Hawleyite", "title": "Wikipedia: Hawleyite" } ], "names": [ "Hawleyite" ], "chemicalFormula": "CdS", "properties": [ { "scalars": [ { "value": "Sulfide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "5.818" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "02.CB.05a" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Bright yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Powdery massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Cubic-hextetrahedral" } ], "name": "Crystal system" }, { "scalars": [ { "value": "2.5-3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Light yellow" } ], "name": "Streak" }, { "scalars": [ { "value": "4.87" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Isometric $\\bar{4}$ 3m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Sassolite", "title": "Wikipedia: Sassolite" } ], "names": [ "Sassolite" ], "chemicalFormula": "H$_{3}$BO$_{3}$", "properties": [ { "scalars": [ { "value": "Borate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "06.AA.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "7.02" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "7.06" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.59" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "103.65" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\alpha$)" }, { "scalars": [ { "value": "101.11" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "59.98" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\gamma$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "As scaly pseudohexagonal crystals, ncrustations, platy, tabular, may be stalactitic" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Triclinic-pinacoidal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Around [001] as twin axis, common" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {001}, micaceous" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Sectile" } ], "name": "Tenacity" }, { "scalars": [ { "value": "1" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "1.340" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.456" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.459" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.119" } ], "name": "Birefringence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "1.46-1.50" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Soluble in water" } ], "name": "Solubility" }, { "scalars": [ { "value": "Triclinic $\\bar{1}$" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Metatorbernite", "title": "Wikipedia: Metatorbernite" } ], "names": [ "Metatorbernite" ], "chemicalFormula": "H$_{3}$BO$_{3}$", "properties": [ { "scalars": [ { "value": "Phosphate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.EB.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Light-dark green" } ], "name": "Color" }, { "scalars": [ { "value": "Flat plates" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Tetragonal-dipyramidal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Fracture" }, { "scalars": [ { "value": "2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, adamantine" } ], "name": "Luster" }, { "scalars": [ { "value": "1.624-1.626" } ], "name": "Refractive index" }, { "scalars": [ { "value": "Light green" } ], "name": "Streak" }, { "scalars": [ { "value": "3.7-3.8" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "25px Radioactive" } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Natrophilite", "title": "Wikipedia: Natrophilite" } ], "names": [ "Natrophilite" ], "chemicalFormula": "NaMnPO$_{4}$", "properties": [ { "scalars": [ { "value": "Phosphate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "08.AB.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Deep yellow-light yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Distinct/ good" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Irregular/ uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "4.5-5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Sub-vitreous, greasy" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.41 g/cm$^{3}$" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Nacrite", "title": "Wikipedia: Nacrite" } ], "names": [ "Nacrite" ], "chemicalFormula": "Al$_{2}$Si$_{2}$O$_{5}$(OH)$_{4}$", "properties": [ { "scalars": [ { "value": "Phyllosilicates, Kaolinite-serpentine group" } ], "name": "Category" }, { "scalars": [ { "value": "09.ED.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Brownmillerite", "title": "Wikipedia: Brownmillerite" } ], "names": [ "Brownmillerite" ], "chemicalFormula": "Ca$_{2}$(Al,Fe)$_{2}$O$_{5}$", "properties": [ { "scalars": [ { "value": "Oxide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "04.AC.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "7.11.2.1" } ], "name": "Dana classification" }, { "scalars": [ { "value": "5.57" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "14.52" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.34" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Reddish brown" } ], "name": "Color" }, { "scalars": [ { "value": "As minute square platelets, massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "3.76" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.960" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "2.010" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "2.040" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.080" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Distinct, X=Y=yellow-brown, Z=dark brown" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "2/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "Ibmm" } ], "name": "Space group" }, { "scalars": [ { "value": "Orthorhombic dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Pigeonite", "title": "Wikipedia: Pigeonite" } ], "names": [ "Pigeonite" ], "chemicalFormula": "(Ca,Mg,Fe)(Mg,Fe)Si$_{2}$O$_{6}$", "properties": [ { "scalars": [ { "value": "Silicate mineral Pyroxene" } ], "name": "Category" }, { "scalars": [ { "value": "09.DA.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "65.01.01.04" } ], "name": "Dana classification" }, { "scalars": [ { "value": "9.7" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8.95" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.24" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "108.59" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Brown, greenish brown-black" } ], "name": "Color" }, { "scalars": [ { "value": "Prismatic crystals,-1 cm, granular, massive." } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Commonly twinned simply or multiply on {100} or {001}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Good on {110}, (110) ^ (1$\\bar{1}$0) ~87$^{\\circ}$" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-dull" } ], "name": "Luster" }, { "scalars": [ { "value": "Grey white" } ], "name": "Streak" }, { "scalars": [ { "value": "3.17-3.46" } ], "conditions": [ { "scalars": [ { "value": "measured" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.683-1.722" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.684-1.722" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.704-1.752" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.021-0.030" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Weak-moderate, X=colorless, pale green, brown, Y=pale brown, pale brownish green, brownish pink, Z=colorless, pale green, pale yellow" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 2$_{1}$/c" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Nyerereite", "title": "Wikipedia: Nyerereite" } ], "names": [ "Nyerereite" ], "chemicalFormula": "Na$_{2}$Ca(CO$_{3}$)$_{2}$", "properties": [ { "scalars": [ { "value": "Carbonate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "05.AC.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Colorless" } ], "name": "Color" }, { "scalars": [ { "value": "Platey, pseudo-hexagonal" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic-Pyramidal H-M Symbol (mm2) Space Group: C mc2$_{1}$" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Always polysynthetically twinned parallel-[001]" } ], "name": "Twinning" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.541" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.511" } ], "name": "Refractive index (n$\\alpha$)" }, { "scalars": [ { "value": "1.533" } ], "name": "Refractive index (n$\\beta$)" }, { "scalars": [ { "value": "1.535" } ], "name": "Refractive index (n$\\gamma$)" }, { "scalars": [ { "value": "0.023" } ], "name": "Birefringence" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Pumpellyite", "title": "Wikipedia: Pumpellyite" } ], "names": [ "Pumpellyite" ], "chemicalFormula": "Na$_{2}$Ca(CO$_{3}$)$_{2}$", "properties": [ { "scalars": [ { "value": "Sorosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.BG.20" } ], "name": "Strunz classification" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Mixite", "title": "Wikipedia: Mixite" } ], "names": [ "Mixite" ], "chemicalFormula": "BiCu$_{6}$(AsO$_{4}$)$_{3}$(OH)$_{6}$.3(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Arsenate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "08.DL.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "13.646(2)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.920(1)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Blue-emerald-green, pale green, white" } ], "name": "Color" }, { "scalars": [ { "value": "Acicular crystals often in radial clusters" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Hexagonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "3-4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "Pale green" } ], "name": "Streak" }, { "scalars": [ { "value": "3.79-3.83" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.743-1.749" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.810-1.830" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.067" } ], "name": "Birefringence" }, { "scalars": [ { "value": "O=colorless, E=bright green" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "6/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 6$_{3}$/m" } ], "name": "Space group" }, { "scalars": [ { "value": "Hexagonal dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Graftonite", "title": "Wikipedia: Graftonite" } ], "names": [ "Graftonite" ], "chemicalFormula": "(Fe$^{2+}$,Mn,Ca)$_{3}$(PO$_{4}$)$_{2}$", "properties": [ { "scalars": [ { "value": "Phosphate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.AB.20" } ], "name": "Strunz classification" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Teruggite", "title": "Wikipedia: Teruggite" } ], "names": [ "Teruggite" ], "chemicalFormula": "Ca$_{4}$MgAs$_{2}$B$_{12}$O$_{22}$(OH)$_{12}$.12H$_{2}$O", "properties": [ { "scalars": [ { "value": "Nesoborates" } ], "name": "Category" }, { "scalars": [ { "value": "06.FA.25" } ], "name": "Strunz classification" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Berborite", "title": "Wikipedia: Berborite" } ], "names": [ "Berborite" ], "chemicalFormula": "Be$_{2}$(BO$_{3}$)(OH,F).H$_{2}$O", "properties": [ { "scalars": [ { "value": "Borate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "06.AB.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "26.1.1.1" } ], "name": "Dana classification" }, { "scalars": [ { "value": "4.43" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.34" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "90.76" } ], "units": "$\\AA^3$", "name": "Unit cell volume" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless" } ], "name": "Color" }, { "scalars": [ { "value": "Hexagonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Complex" } ], "name": "Twinning" }, { "scalars": [ { "value": "{0001} Perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven-Flat surfaces fractured in an uneven pattern." } ], "conditions": [ { "scalars": [ { "value": "not cleavage" } ], "name": "Note" } ], "name": "Fracture" }, { "scalars": [ { "value": "3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "conditions": [ { "scalars": [ { "value": "Glassy" } ], "name": "Note" } ], "name": "Luster" }, { "scalars": [ { "value": "white" } ], "name": "Streak" }, { "scalars": [ { "value": "2.2" } ], "name": "Density" }, { "scalars": [ { "value": "1.580" } ], "name": "Refractive index (n$\\omega$)" }, { "scalars": [ { "value": "1.485" } ], "name": "Refractive index (n$\\epsilon$)" }, { "scalars": [ { "value": "0.095" } ], "name": "Birefringence" }, { "scalars": [ { "value": "none" } ], "name": "fluorescence" }, { "scalars": [ { "value": "3" } ], "name": "Hexagonal point group" }, { "scalars": [ { "value": "or 6" } ], "name": "Symmetry" }, { "scalars": [ { "value": "3m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Fabianite", "title": "Wikipedia: Fabianite" } ], "names": [ "Fabianite" ], "chemicalFormula": "CaB$_{3}$O$_{5}$(OH)", "properties": [ { "scalars": [ { "value": "Phylloborates" } ], "name": "Category" }, { "scalars": [ { "value": "06.FC.20" } ], "name": "Strunz classification" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Hessite", "title": "Wikipedia: Hessite" } ], "names": [ "Hessite" ], "chemicalFormula": "Ag$_{2}$Te", "properties": [ { "scalars": [ { "value": "Sulfide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "02.BA.30c" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "8.13" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "4.48" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "8.09" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "Lead-grey, steel-grey" } ], "name": "Color" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Indistinct on {100}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Sectile" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2-3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "black" } ], "name": "Streak" }, { "scalars": [ { "value": "8.24-8.45" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2/m-Prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Empressite", "title": "Wikipedia: Empressite" } ], "names": [ "Empressite" ], "chemicalFormula": "AgTe", "properties": [ { "scalars": [ { "value": "Telluride mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.CB.80" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Pale bronze" } ], "name": "Color" }, { "scalars": [ { "value": "Granular masses" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven-subconchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Gray-black-black" } ], "name": "Streak" }, { "scalars": [ { "value": "Very strong, in gray-creamy white" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "7.6" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Andersonite", "title": "Wikipedia: Andersonite" } ], "names": [ "Andersonite" ], "chemicalFormula": "Na$_{2}$Ca(UO$_{2}$)(CO$_{3}$)$_{3}$.6H$_{2}$O", "properties": [ { "scalars": [ { "value": "Carbonate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "05.ED.30" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "18" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "23.83" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "18" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Bright green-yellow-green" } ], "name": "Color" }, { "scalars": [ { "value": "Rhombohedra, often flattened, pseudocubic, crystalline crusts, granular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "2.8" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.520" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.540" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.020" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Visible O=colorless E=Light yellow" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "bright pale green-yellow-green" } ], "name": "fluorescence" }, { "scalars": [ { "value": "Soluble in water" } ], "name": "Solubility" }, { "scalars": [ { "value": "$\\bar{3}$" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "R$\\bar{3}$" } ], "name": "Space group" }, { "scalars": [ { "value": "Trigonal rhombohedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Rutherfordine", "title": "Wikipedia: Rutherfordine" } ], "names": [ "Rutherfordine" ], "chemicalFormula": "UO$_{2}$CO$_{3}$", "properties": [ { "scalars": [ { "value": "Carbonate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "05.EB.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "4.840" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "9.273" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "4.298" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Crystals are Lathlike, elongated crystals commonly radiating, fibrous, matted, earthy-very fine-grained masses." } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "perfect on {010}, good on {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Silky, dull" } ], "name": "Luster" }, { "scalars": [ { "value": "Yellow" } ], "name": "Streak" }, { "scalars": [ { "value": "5.7" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.700-1.723" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.716-1.730" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.755-1.795" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.055-0.072" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Visible X=colorless, Y=pale yellow, Z=pale greenish yellow" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Radioactive" } ], "name": "Other" }, { "scalars": [ { "value": "mm2" } ], "name": "H-M symbol" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Mckelveyite-(Y)", "title": "Wikipedia: Mckelveyite-(Y)" } ], "names": [ "Mckelveyite-(Y)" ], "chemicalFormula": "Ba$_{3}$Na(Ca,U)Y(CO$_{3}$)$_{6}$.3H$_{2}$O", "properties": [ { "scalars": [ { "value": "Carbonate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "05.CC.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "9.170(3)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "9.169(3)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "7.075(2)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "102.50(3)" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\alpha$)" }, { "scalars": [ { "value": "115.63(3)" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "59.99(3)" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\gamma$)" }, { "scalars": [ { "value": "1" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Lime-yellow, greenish gray, reddish brown, may be black from contained organic material" } ], "name": "Color" }, { "scalars": [ { "value": "Tabular, pyramidal" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Triclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Threefold" } ], "conditions": [ { "scalars": [ { "value": "pseudorhombohedral about {0001}" } ], "name": "Note" } ], "name": "Twinning" }, { "scalars": [ { "value": "Indistinct" } ], "name": "Cleavage" }, { "scalars": [ { "value": "3.5-4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, greasy, or dull" } ], "name": "Luster" }, { "scalars": [ { "value": "1.550-1.554" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.550-1.554" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.649-1.658" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.0990-0.1040" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Visible" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.25" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1-Pedial" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P1" } ], "name": "Space group" }, { "scalars": [ { "value": "Triclinic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Kermesite", "title": "Wikipedia: Kermesite" } ], "names": [ "Kermesite" ], "chemicalFormula": "(Sb$_{2}$S$_{2}$O)", "properties": [ { "scalars": [ { "value": "Oxysulfide" } ], "name": "Category" }, { "scalars": [ { "value": "02.FD.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "02.13.01.01" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Red-cherry red, purple" } ], "name": "Color" }, { "scalars": [ { "value": "Acicular, fibrous, radial" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "TriclinicPinacoidal $\\bar{1}$" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect {100}, parting on {010}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Sectile" } ], "name": "Tenacity" }, { "scalars": [ { "value": "Brittle" } ], "name": "Fracture" }, { "scalars": [ { "value": "1-2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine-semimetallic" } ], "name": "Luster" }, { "scalars": [ { "value": "2.720" } ], "name": "Refractive index (n$\\alpha$)" }, { "scalars": [ { "value": "2.740" } ], "name": "Refractive index (n$\\beta$)" }, { "scalars": [ { "value": "2.740" } ], "name": "Refractive index (n$\\gamma$)" }, { "scalars": [ { "value": "None" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Brownish red" } ], "name": "Streak" }, { "scalars": [ { "value": "4.5-4.8+" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Arsenolite", "title": "Wikipedia: Arsenolite" } ], "names": [ "Arsenolite" ], "chemicalFormula": "As$_{4}$O$_{6}$", "properties": [ { "scalars": [ { "value": "Oxide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "11.074" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "16" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "197.841" } ], "name": "Molecular weight" }, { "scalars": [ { "value": "04.CB.50" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "White, pale blue, pink-pale yellow if impure" } ], "name": "Color" }, { "scalars": [ { "value": "Common as tiny octahedra, aggregates or crusts, botryoidal, stalactitic" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Cubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "On {111}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "1.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-silky, may be earthy or dull" } ], "name": "Luster" }, { "scalars": [ { "value": "1.755" } ], "name": "Refractive index (n)" }, { "scalars": [ { "value": "white /pale white" } ], "name": "Streak" }, { "scalars": [ { "value": "3.87" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Astringent, sweetish taste,-xic" } ], "name": "Other" }, { "scalars": [ { "value": "4/m$\\bar{3}$2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "Fd3m" } ], "name": "Space group" }, { "scalars": [ { "value": "Isometric hexoctahedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Clausthalite", "title": "Wikipedia: Clausthalite" } ], "names": [ "Clausthalite" ], "chemicalFormula": "PbSe", "properties": [ { "scalars": [ { "value": "Selenide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.CD.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "02.08.01.02" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Bluish gray-lead-gray" } ], "name": "Color" }, { "scalars": [ { "value": "Massive-granular with euhedral crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Isometric-hexoctahedralh (4/m $\\bar{3}$ 2/m)" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{001} Perfect, {010} Perfect, {100} Perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "grayish black" } ], "name": "Streak" }, { "scalars": [ { "value": "7.6-8.8" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Tantite", "title": "Wikipedia: Tantite" } ], "names": [ "Tantite" ], "chemicalFormula": "Ta$_{2}$O$_{5}$", "properties": [ { "scalars": [ { "value": "04.EA.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "04.06.06.01" } ], "name": "Dana classification" }, { "scalars": [ { "value": "3.8" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "3.79" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "35.74" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "90.18" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "6" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "441.89" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "Colorless" } ], "name": "Color" }, { "scalars": [ { "value": "Triclinic-Pedial" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "7" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "8.55" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "8.45" } ], "conditions": [ { "scalars": [ { "value": "g/cm$^3$" } ], "name": "Note" } ], "name": "Density" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Wiluite", "title": "Wikipedia: Wiluite" } ], "names": [ "Wiluite" ], "chemicalFormula": "Ca$_{19}$(Al,Mg,Fe,Ti)$_{13}$(B,Al,[ ])$_{5}$Si$_{18}$O$_{68}$(O,OH)$_{10}$", "properties": [ { "scalars": [ { "value": "Sorosilicates" } ], "name": "Category" }, { "scalars": [ { "value": "09.BG.35" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "15.716" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "11.704" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "Dark green" } ], "name": "Color" }, { "scalars": [ { "value": "Typically as euhedral crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Tetragonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{100} poor" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Irregular" } ], "name": "Fracture" }, { "scalars": [ { "value": "6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "3.36" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.721" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.725" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.004" } ], "name": "Birefringence" }, { "scalars": [ { "value": "4/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 4/nnc" } ], "name": "Space group" }, { "scalars": [ { "value": "Tetragonal ditetragonal dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Ulv\u00f6spinel", "title": "Wikipedia: Ulv\u00f6spinel" } ], "names": [ "Ulv\u00f6spinel" ], "chemicalFormula": "TiFe$^{2+}$$_{2}$O$_{4}$", "properties": [ { "scalars": [ { "value": "Oxide minerals, Spinel group, Spinel structural group" } ], "name": "Category" }, { "scalars": [ { "value": "04.BB.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Iron-black, brown in reflected light" } ], "name": "Color" }, { "scalars": [ { "value": "Commonly as an exsolution in magnetite" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Isometric-hexoctahedral(4/m 3 2/m)" } ], "name": "Crystal system" }, { "scalars": [ { "value": "5.5-6.0" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "4.78" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Siegenite", "title": "Wikipedia: Siegenite" } ], "names": [ "Siegenite" ], "chemicalFormula": "(Ni,Co)$_{3}$S$_{4}$", "properties": [ { "scalars": [ { "value": "Sulfide mineral, Thiospinel group, Spinel structural group" } ], "name": "Category" }, { "scalars": [ { "value": "02.DA.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "9.41" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Light-steel-grey, violet-gray" } ], "conditions": [ { "scalars": [ { "value": "tarnished" } ], "name": "Note" } ], "name": "Color" }, { "scalars": [ { "value": "As octahedral crystals, granular, massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Cubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "On {111}, polysynthetic" } ], "name": "Twinning" }, { "scalars": [ { "value": "Imperfect on {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Irregular-uneven, sub-conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "4.5-5.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Grayish black" } ], "name": "Streak" }, { "scalars": [ { "value": "4.5-4.8" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "4/m$\\bar{3}$ 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "F d3m" } ], "name": "Space group" }, { "scalars": [ { "value": "Isometric hexoctahedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Rhodolite", "title": "Wikipedia: Rhodolite" } ], "names": [ "Rhodolite" ], "chemicalFormula": "(Mg,Fe)$_{3}$Al$_{2}$(SiO$_{4}$)$_{3}$", "properties": [ { "scalars": [ { "value": "Pyrope variety" } ], "name": "Category" }, { "scalars": [ { "value": "light-dark purplish red through reddish purple" } ], "name": "Color" }, { "scalars": [ { "value": "cubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "none, may show indistinct parting" } ], "name": "Cleavage" }, { "scalars": [ { "value": "conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "7-7.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "greasy-vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "vitreous" } ], "name": "Polish" }, { "scalars": [ { "value": "1.760" } ], "name": "Refractive index" }, { "scalars": [ { "value": "none" } ], "name": "Birefringence" }, { "scalars": [ { "value": "none" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "inert" } ], "name": "fluorescence" }, { "scalars": [ { "value": "usually at 504, 520, and 573 nm, may also have faint lines at 423, 460, 610, and 680-690 nm" } ], "name": "absorption" }, { "scalars": [ { "value": "3.84" } ], "conditions": [ { "scalars": [ { "value": "+/-.10" } ], "name": "Note" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Rheniite", "title": "Wikipedia: Rheniite" } ], "names": [ "Rheniite" ], "chemicalFormula": "ReS$_{2}$", "properties": [ { "scalars": [ { "value": "Sulfide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.EB.35" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "6.47" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "6.368" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.401" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "105" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\alpha$)" }, { "scalars": [ { "value": "91.59" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "118.9" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\gamma$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Black, red translucent" } ], "name": "Color" }, { "scalars": [ { "value": "Platey" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Triclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Black" } ], "name": "Streak" }, { "scalars": [ { "value": "$\\bar{1}$" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P$\\bar{1}$" } ], "name": "Space group" }, { "scalars": [ { "value": "Triclinic pinacoidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Schoepite", "title": "Wikipedia: Schoepite" } ], "names": [ "Schoepite" ], "chemicalFormula": "(UO$_{2}$)$_{8}$O$_{2}$(OH)$_{12}$ . 12(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Uranium minerals" } ], "name": "Category" }, { "scalars": [ { "value": "04.GA.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "14.33" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "16.79" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "14.73" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Amber, lemon-or sulfur yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Commonly as tabular equant,-short prismatic crystals, rarely in microcrystalline aggregates" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "[001] Perfect, [010] indistinct" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine" } ], "name": "Luster" }, { "scalars": [ { "value": "Yellow" } ], "name": "Streak" }, { "scalars": [ { "value": "4.8" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.690" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.714" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.735" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.045" } ], "name": "Birefringence" }, { "scalars": [ { "value": "X=almost colorless, Y=Z=lemon-yellow-golden yellow" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Short and long UV=pale green" } ], "name": "fluorescence" }, { "scalars": [ { "value": "mm2" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 2$_{1}$ca" } ], "name": "Space group" }, { "scalars": [ { "value": "Orthorhombic pyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Fornacite", "title": "Wikipedia: Fornacite" } ], "names": [ "Fornacite" ], "chemicalFormula": "Pb$_{2}$Cu(CrO$_{4}$)(AsO$_{4}$)(OH)", "properties": [ { "scalars": [ { "value": "Arsenate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "07.FC.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "43.4.3.2" } ], "name": "Dana classification" }, { "scalars": [ { "value": "8.101(2)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.893(11)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "17.547(9)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "110.00(4)" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Deep olive-green" } ], "name": "Color" }, { "scalars": [ { "value": "Aggregates of steep pyramidal-bladed, rounded crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Irregular/uneven, conchoidal, sub-conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2-3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Resinous, waxy, greasy" } ], "name": "Luster" }, { "scalars": [ { "value": "Olive green" } ], "name": "Streak" }, { "scalars": [ { "value": "6.27" } ], "conditions": [ { "scalars": [ { "value": "g/cm$^{3}$" } ], "name": "Note" } ], "name": "Density" }, { "scalars": [ { "value": "2.142" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "2.242" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.100" } ], "name": "Birefringence" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 2$_{1}$/c" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Evenkite", "title": "Wikipedia: Evenkite" } ], "names": [ "Evenkite" ], "chemicalFormula": "C$_{24}$H$_{50}$", "properties": [ { "scalars": [ { "value": "Organic mineral" } ], "name": "Category" }, { "scalars": [ { "value": "10.BA.50" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "7.47" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "4.98" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "65.85" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless or pale yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Tabular pseudohexagonal crystals, granular, disseminated" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Polysynthetic" } ], "name": "Twinning" }, { "scalars": [ { "value": "{001} Perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "1" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Waxy" } ], "name": "Luster" }, { "scalars": [ { "value": "0.87" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.504" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.504" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.553" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.049" } ], "name": "Birefringence" }, { "scalars": [ { "value": "2/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "Pbcm" } ], "name": "Space group" }, { "scalars": [ { "value": "Orthorhombic dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Fire_agate", "title": "Wikipedia: Fire agate" } ], "names": [ "Fire agate" ], "chemicalFormula": "Silica (silicon dioxide, SiO$_{2}$)", "properties": [ { "scalars": [ { "value": "Oxide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "60" } ], "units": "g / mol", "name": "Molecular weight" }, { "scalars": [ { "value": "Yellow-red" } ], "name": "Color" }, { "scalars": [ { "value": "Trigonal, monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Absent" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven, splintery, conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "6-7" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Waxy, vitreous, dull, greasy, silky" } ], "name": "Luster" }, { "scalars": [ { "value": "2.59-2.61" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Greigite", "title": "Wikipedia: Greigite" } ], "names": [ "Greigite" ], "chemicalFormula": "Fe$^{2+}$Fe$^{3+}$$_{2}$S$_{4}$", "properties": [ { "scalars": [ { "value": "Sulfide mineral, Thiospinel group, Spinel structural group" } ], "name": "Category" }, { "scalars": [ { "value": "02.DA.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "9.876" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Pale pink, tarnishes-metallic blue-black" } ], "name": "Color" }, { "scalars": [ { "value": "Spheres of intergrown octahedra and as disseminated microscopic grains" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Cubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "4-4.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic-earthy" } ], "name": "Luster" }, { "scalars": [ { "value": "4.049" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Strongly magnetic" } ], "name": "Other" }, { "scalars": [ { "value": "4/m$\\bar{3}$2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "F d3m" } ], "name": "Space group" }, { "scalars": [ { "value": "Isometric hexoctahedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Seamanite", "title": "Wikipedia: Seamanite" } ], "names": [ "Seamanite" ], "chemicalFormula": "Mn$_{3}$[B(OH)$_{4}$](PO$_{4}$)(OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Borate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "06.AC.65" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "43.4.5.1" } ], "name": "Dana classification" }, { "scalars": [ { "value": "7.811" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "15.114" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.691" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "372.64" } ], "units": "g/mol", "name": "Molecular weight" }, { "scalars": [ { "value": "yellow, yellow-brown, pink" } ], "name": "Color" }, { "scalars": [ { "value": "acicular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "distinct on {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "brittle" } ], "name": "Fracture" }, { "scalars": [ { "value": "brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.640" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.663" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.665" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.025" } ], "name": "Birefringence" }, { "scalars": [ { "value": "none" } ], "name": "fluorescence" }, { "scalars": [ { "value": "white" } ], "name": "Streak" }, { "scalars": [ { "value": "3.08-3.128" } ], "conditions": [ { "scalars": [ { "value": "g/cm$^{3}$" } ], "name": "Note" } ], "name": "Density" }, { "scalars": [ { "value": "in cold, dilute acids" } ], "name": "Solubility" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Heliotrope_(mineral)", "title": "Wikipedia: Heliotrope (mineral)" } ], "names": [ "Heliotrope (mineral)" ], "chemicalFormula": "SiO$_{2}$ (silicon dioxide)", "properties": [ { "scalars": [ { "value": "Green with red or yellow spots" } ], "name": "Color" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "6.5-7" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.53-1.54" } ], "name": "Refractive index" }, { "scalars": [ { "value": "0.004" } ], "name": "Birefringence" }, { "scalars": [ { "value": "2.61" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Botryogen", "title": "Wikipedia: Botryogen" } ], "names": [ "Botryogen" ], "chemicalFormula": "MgFe$^{3+}$(SO$_{4}$)$_{2}$(OH).7H$_{2}$O", "properties": [ { "scalars": [ { "value": "Sulfate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "07.DC.25" } ], "name": "Strunz classification" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Nontronite", "title": "Wikipedia: Nontronite" } ], "names": [ "Nontronite" ], "chemicalFormula": "(CaO$_{0.5}$,Na)$_{0.3}$Fe$^{3+}$$_{2}$(Si,Al)$_{4}$O$_{10}$(OH)$_{2}$.nH$_{2}$O", "properties": [ { "scalars": [ { "value": "Phyllosilicates, Smectite group" } ], "name": "Category" }, { "scalars": [ { "value": "Yellow, olive-green, green, orange, brown" } ], "name": "Color" }, { "scalars": [ { "value": "Earthy masses" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect basal" } ], "name": "Cleavage" }, { "scalars": [ { "value": "1.5-2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Earthy-dull" } ], "name": "Luster" }, { "scalars": [ { "value": "1.530-1.580" } ], "name": "Refractive index (n$\\alpha$)" }, { "scalars": [ { "value": "1.555-1.612" } ], "name": "Refractive index (n$\\beta$)" }, { "scalars": [ { "value": "1.560-1.615" } ], "name": "Refractive index (n$\\gamma$)" }, { "scalars": [ { "value": "0.030-0.035" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Colorless" } ], "name": "Streak" }, { "scalars": [ { "value": "2.3" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Digenite", "title": "Wikipedia: Digenite" } ], "names": [ "Digenite" ], "chemicalFormula": "Cu$_{9}$S$_{5}$", "properties": [ { "scalars": [ { "value": "Sulfide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "146.45" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "02.BA.05e" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "02.04.07.03" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Blue-black" } ], "name": "Color" }, { "scalars": [ { "value": "Pseudocubic crystals are rare, usually as intergrowths with other copper sulfides" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal Hexagonal scalenohedral H-M Symbol ($\\bar{3}$2/m) Space Group: R$\\bar{3}$m" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{111}" } ], "conditions": [ { "scalars": [ { "value": "observed in synthetic material" } ], "name": "Note" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2.5-3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Submetallic-metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Black" } ], "name": "Streak" }, { "scalars": [ { "value": "5.5-5.7 observed" }, { "value": "5.628" } ], "conditions": [ { "scalars": [ { "value": "calculated" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Distinctly blue in polished sections" } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Djurleite", "title": "Wikipedia: Djurleite" } ], "names": [ "Djurleite" ], "chemicalFormula": "Cu$_{31}$S$_{16}$", "properties": [ { "scalars": [ { "value": "Copper sulfide" } ], "name": "Category" }, { "scalars": [ { "value": "26.897" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "15.745" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "13.565 $\\beta$=90.13$^{\\circ}$ Z=8" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2483" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "02.BA.05b" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "2.4.7.2" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Grey, blue-black or black" } ], "name": "Color" }, { "scalars": [ { "value": "Crystals are short prismatic and thick tabular, also massive and compact" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Pseudohexagonal twins are common, twin axis [100]." } ], "name": "Twinning" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2.5-3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Submetallic-metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Black" } ], "name": "Streak" }, { "scalars": [ { "value": "5.63" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "P2$_{1}$/n" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic 2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Pararealgar", "title": "Wikipedia: Pararealgar" } ], "names": [ "Pararealgar" ], "chemicalFormula": "As$_{4}$S$_{4}$", "properties": [ { "scalars": [ { "value": "Sulfide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "2.FA.15b" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "9.909" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "9.655" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "8.502" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "97.20" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "16" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Bright yellow when powdery,-yellow-orange and orange-brown when granular" } ], "name": "Color" }, { "scalars": [ { "value": "Fine powder-granular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "1-1.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-resinous" } ], "name": "Luster" }, { "scalars": [ { "value": "Bright yellow" } ], "name": "Streak" }, { "scalars": [ { "value": "3.52" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.02" } ], "name": "Birefringence" }, { "scalars": [ { "value": "High: x=orange yellow, y=bright yellow, z=orange red" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "2/m-prismatic" } ], "name": "H-M symbol" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Kornerupine", "title": "Wikipedia: Kornerupine" } ], "names": [ "Kornerupine" ], "chemicalFormula": "(Mg,Fe$^{2+}$)$_{4}$(Al,Fe$^{3+}$)$_{6}$(SiO$_{4}$,BO$_{4}$)$_{5}$(O,OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Borosilicates" } ], "name": "Category" }, { "scalars": [ { "value": "09.BJ.50, VIII/B.31-10" } ], "conditions": [ { "scalars": [ { "value": "8 ed" } ], "name": "Note" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "58.01.01.01" } ], "name": "Dana classification" }, { "scalars": [ { "value": "15.99" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "13.7" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.7" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless, white, grey, greenish, bluish, brown, black" } ], "name": "Color" }, { "scalars": [ { "value": "Prismatic crystals, radiating, massive, fibrous" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Good on {110}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "6-7" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.29-3.35" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.660-1.671" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.673-1.683" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.674-1.684" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.014" } ], "name": "Birefringence" }, { "scalars": [ { "value": "X=colorless-green, Y=colorless, pale brownish yellow, pale yellowish green, Z=pale brownish green, green, light amber" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "2/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "C mcm" } ], "name": "Space group" }, { "scalars": [ { "value": "Orthorhombic dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Breithauptite", "title": "Wikipedia: Breithauptite" } ], "names": [ "Breithauptite" ], "chemicalFormula": "NiSb", "properties": [ { "scalars": [ { "value": "Antimonide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.CC.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "3.946" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.148" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Pale copper-red, may be with violet tint" } ], "name": "Color" }, { "scalars": [ { "value": "Crystals rare, thin tabular or needlelike,-1 mm, arborescent, disseminated, massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Hexagonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Twin plane {10$\\bar{1}$1}" } ], "name": "Twinning" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Subconchoidal-uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Reddish brown" } ], "name": "Streak" }, { "scalars": [ { "value": "7.591-8.23" }, { "value": "8.629" } ], "conditions": [ { "scalars": [ { "value": "measured" }, { "value": "calculated" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Very distinct" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "6/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 6$_{3}$/mmc" } ], "name": "Space group" }, { "scalars": [ { "value": "Hexagonal dihexagonal dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Gersdorffite", "title": "Wikipedia: Gersdorffite" } ], "names": [ "Gersdorffite" ], "chemicalFormula": "NiAsS", "properties": [ { "scalars": [ { "value": "02.EB.25" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "silver white-steel gray" } ], "name": "Color" }, { "scalars": [ { "value": "cubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "5-5.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "grayish black" } ], "name": "Streak" }, { "scalars": [ { "value": "5.6-6.2" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Chlorargyrite", "title": "Wikipedia: Chlorargyrite" } ], "names": [ "Chlorargyrite" ], "chemicalFormula": "AgCl", "properties": [ { "scalars": [ { "value": "Halide" } ], "name": "Category" }, { "scalars": [ { "value": "03.AA.15" } ], "name": "Strunz classification" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Samsonite_(mineral)", "title": "Wikipedia: Samsonite (mineral)" } ], "names": [ "Samsonite (mineral)" ], "chemicalFormula": "Ag$_{4}$MnSb$_{2}$S$_{6}$", "properties": [ { "scalars": [ { "value": "Sulfide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "02.GA.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "10.3861(6)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8.1108(7)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.663(7)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "Black" } ], "name": "Color" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "5.461" } ], "conditions": [ { "scalars": [ { "value": "calculated" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2/m-Prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Microlite", "title": "Wikipedia: Microlite" } ], "names": [ "Microlite" ], "chemicalFormula": "(Na,Ca)$_{2}$Ta$_{2}$O$_{6}$(O,OH,F)", "properties": [ { "scalars": [ { "value": "Oxide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "04.DH.15" } ], "name": "Strunz classification" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Lorenzenite", "title": "Wikipedia: Lorenzenite" } ], "names": [ "Lorenzenite" ], "chemicalFormula": "Na$_{2}$Ti$_{2}$[O$_{3}$Si$_{2}$O$_{6}$]", "properties": [ { "scalars": [ { "value": "Silicate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "9.DB.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "8.71" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.23" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "14.48" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Pale purple-brown, pale pink-mauve, brown-black" } ], "name": "Color" }, { "scalars": [ { "value": "Equant, bladed, prismatic,-needlelike crystals, fibrous, felted, lamellar aggregates" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Distinct/good on {010}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Irregular/uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine, vitreous, sub-metallic, dull" } ], "name": "Luster" }, { "scalars": [ { "value": "White-pale brown" } ], "name": "Streak" }, { "scalars": [ { "value": "3.42-3.45" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.910-1.950" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "2.010-2.040" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "2.030-2.060" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.120" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Weak" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Pale yellow-dull green under SW UV" } ], "name": "fluorescence" }, { "scalars": [ { "value": "2/m 2/m 2/m dipyramidal" } ], "name": "H-M symbol" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Robertsite", "title": "Wikipedia: Robertsite" } ], "names": [ "Robertsite" ], "chemicalFormula": "Ca$_{3}$(Mn$^{3+}$)$_{4}$[(OH)$_{3}$ (PO$_{4}$)$_{2}$]$_{2}$.3H$_{2}$O", "properties": [ { "scalars": [ { "value": "Phosphate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.DH.30" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "42.08.04.02 Mitridatite group" } ], "name": "Dana classification" }, { "scalars": [ { "value": "17.36" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "19.53" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "11.30" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "96.0" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "12" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Red, red-brown, deep red, bronzy brown, black" } ], "name": "Color" }, { "scalars": [ { "value": "laty-wedge-shaped, pseudorhombohedral crystals, fibrous, in botryoidal-feathery aggregates" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Common perpendicular-{100}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Very good {100}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Micaceous" } ], "name": "Fracture" }, { "scalars": [ { "value": "3.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-resinous or waxy" } ], "name": "Luster" }, { "scalars": [ { "value": "Chocolate-brown" } ], "name": "Streak" }, { "scalars": [ { "value": "3.13-3.17" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.775" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.820" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.820" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.045" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Strong, X pale red-pink Y,Z deep red brown" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Monoclinic 2/m prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Brewsterite", "title": "Wikipedia: Brewsterite" } ], "names": [ "Brewsterite" ], "chemicalFormula": "Ca$_{3}$(Mn$^{3+}$)$_{4}$[(OH)$_{3}$ (PO$_{4}$)$_{2}$]$_{2}$.3H$_{2}$O", "properties": [ { "scalars": [ { "value": "Zeolite" } ], "name": "Category" }, { "scalars": [ { "value": "09.GE.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Monticellite", "title": "Wikipedia: Monticellite" } ], "names": [ "Monticellite" ], "chemicalFormula": "Ca(Mg,Fe)SiO$_{4}$", "properties": [ { "scalars": [ { "value": "Nesosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.AC.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "colourless or grey" } ], "name": "Color" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{010}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "5.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "1.638-1.654" } ], "name": "Refractive index ($\\alpha$)" }, { "scalars": [ { "value": "1.646-1.664" } ], "name": "Refractive index ($\\beta$)" }, { "scalars": [ { "value": "1.650-1.674" } ], "name": "Refractive index ($\\gamma$)" }, { "scalars": [ { "value": "3.05-3.27" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1503" } ], "units": "$^{\\circ}$C", "name": "Melting point" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Mullite", "title": "Wikipedia: Mullite" } ], "names": [ "Mullite" ], "chemicalFormula": "Al$_{6}$Si$_{2}$O$_{13}$", "properties": [ { "scalars": [ { "value": "Nesosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.AF.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "7.5785(6)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "7.6817(7)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "2.8864(3)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "1" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless-pale pink or grey" } ], "name": "Color" }, { "scalars": [ { "value": "Prismatic-acicular crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Good on [010]" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "6-7" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.11-3.26" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.642-1.653" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.644-1.655" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.654-1.679" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.012-0.026" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Orthorhombic (2/m 2/m 2/m) dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Ettringite", "title": "Wikipedia: Ettringite" } ], "names": [ "Ettringite" ], "chemicalFormula": "Ca$_{6}$Al$_{2}$(SO$_{4}$)$_{3}$(OH)$_{12}$.26H$_{2}$O", "properties": [ { "scalars": [ { "value": "Sulfate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "07.DG.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "11.23" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "21.44" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless, pale yellow, milky white" } ], "name": "Color" }, { "scalars": [ { "value": "Acicular growth, striated prismatic crystals, fibrous-cot-nlike" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {10$\\bar{1}$0}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "2-2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "1.77" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.491" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.470" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.021" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Non-fluorescent" } ], "name": "fluorescence" }, { "scalars": [ { "value": "Partially soluble in water" } ], "name": "Solubility" }, { "scalars": [ { "value": "Trigonal 3m ditrigonal pyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Ye'elimite", "title": "Wikipedia: Ye'elimite" } ], "names": [ "Ye'elimite" ], "chemicalFormula": "Ca$_{4}$(AlO$_{2}$)$_{6}$SO$_{4}$", "properties": [ { "scalars": [ { "value": "Sulfate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "07.BC.15" } ], "name": "Strunz classification" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Gaspeite", "title": "Wikipedia: Gaspeite" } ], "names": [ "Gaspeite" ], "chemicalFormula": "(Ni,Fe,Mg)CO$_{3}$", "properties": [ { "scalars": [ { "value": "Carbonate mineral, anhydrous subgroup" } ], "name": "Category" }, { "scalars": [ { "value": "05.AB.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "14.01.01.08 Calcite group" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Pale green, light grass or apple green" } ], "name": "Color" }, { "scalars": [ { "value": "Rhombic crystal aggregates, nodular concretions , massive" } ], "conditions": [ { "scalars": [ { "value": "botryoidal" } ], "name": "Note" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal-Hexagonal Scalenohedral H-M Symbol ($\\bar{3}$2/m) Space Group: R $\\bar{3}$c" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{10$\\bar{1}$1} Good" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "4.5-5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-dull" } ], "name": "Luster" }, { "scalars": [ { "value": "Yellow green" } ], "name": "Streak" }, { "scalars": [ { "value": "3.71" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.830" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.610" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.220" } ], "name": "Birefringence" }, { "scalars": [ { "value": "HCl soluble" } ], "name": "Solubility" }, { "scalars": [ { "value": "Weakly magnetic" } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Heazlewoodite", "title": "Wikipedia: Heazlewoodite" } ], "names": [ "Heazlewoodite" ], "chemicalFormula": "Ni$_{3}$S$_{2}$", "properties": [ { "scalars": [ { "value": "Sulfide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.BB.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Pale bronze" } ], "name": "Color" }, { "scalars": [ { "value": "Disseminated granular-massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal-trapezohedral" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Possibly the cause of mosaic structure seen in polished section" } ], "name": "Twinning" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "5.82" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Kambaldaite", "title": "Wikipedia: Kambaldaite" } ], "names": [ "Kambaldaite" ], "chemicalFormula": "NaNi$_{4}$(CO$_{3}$)$_{3}$(OH)$_{3}$.3H$_{2}$O", "properties": [ { "scalars": [ { "value": "Carbonate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "05.DA.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Hexagonal" } ], "name": "Crystal system" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Otwayite", "title": "Wikipedia: Otwayite" } ], "names": [ "Otwayite" ], "chemicalFormula": "Ni$_{2}$CO$_{3}$(OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Carbonate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "05.DA.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "10.18" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "27.4" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "3.22" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Bright green" } ], "name": "Color" }, { "scalars": [ { "value": "Sprays of Fibrous bundles oriented perpendicular-veinlet walls, spherules and claylike coatings" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Silky-waxy" } ], "name": "Luster" }, { "scalars": [ { "value": "3.41" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.650" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.720" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.070" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Weak" } ], "name": "Pleochroism" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Violarite", "title": "Wikipedia: Violarite" } ], "names": [ "Violarite" ], "chemicalFormula": "(Fe$^{2+}$Ni$_{2}$$^{3+}$S$_{4}$)", "properties": [ { "scalars": [ { "value": "Sulfide mineral, Thiospinel group, Spinel structural group" } ], "name": "Category" }, { "scalars": [ { "value": "02.DA.05" } ], "name": "Strunz classification" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Polydymite", "title": "Wikipedia: Polydymite" } ], "names": [ "Polydymite" ], "chemicalFormula": "Ni$_{3}$S$_{4}$", "properties": [ { "scalars": [ { "value": "Sulfide mineral, Thiospinel group, Spinel structural group" } ], "name": "Category" }, { "scalars": [ { "value": "02.DA.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "9.48" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Pale-steel-gray" } ], "name": "Color" }, { "scalars": [ { "value": "As octahedral crystals, massive, granular-compact" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Cubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Twinning on {111}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Indistinct on {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal-uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "4.5-5.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Black gray" } ], "name": "Streak" }, { "scalars": [ { "value": "4.5-4.8" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "4/m$\\bar{3}$2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "F d3m" } ], "name": "Space group" }, { "scalars": [ { "value": "Isometric hexoctahedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Corderoite", "title": "Wikipedia: Corderoite" } ], "names": [ "Corderoite" ], "chemicalFormula": "Hg$_{3}$S$_{2}$Cl$_{2}$", "properties": [ { "scalars": [ { "value": "Halide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.FC.15a" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "8.940(5)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Pale orange-pink-salmon-pink, on exposure-light, rapidly darkening-pale gray, then black" } ], "name": "Color" }, { "scalars": [ { "value": "Rare as cubic crystals, as rims and replacements of cinnabar" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Cubic-Diploidal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "6.845" } ], "conditions": [ { "scalars": [ { "value": "calc." } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "n>2.5" } ], "name": "Refractive index" }, { "scalars": [ { "value": "Isometric 2/m$\\bar{3}$" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Eucryptite", "title": "Wikipedia: Eucryptite" } ], "names": [ "Eucryptite" ], "chemicalFormula": "LiAlSiO$_{4}$", "properties": [ { "scalars": [ { "value": "Silicate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "13.48" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "9.01" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "18" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Brown, colorless, white" } ], "name": "Color" }, { "scalars": [ { "value": "Rare as euhedral crystals, coarse crystalline aggregates and massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal rhombohedral" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Indistinct on {10$\\bar{1}$0} and {0001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Very brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "6.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.570-1.573" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.583-1.587" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.013" } ], "name": "Birefringence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.67" } ], "name": "Density" }, { "scalars": [ { "value": "Fluoresces pink-red or orange under SW UV" } ], "name": "Other" }, { "scalars": [ { "value": "Trigonal $\\bar{3}$" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Nagy\u00e1gite", "title": "Wikipedia: Nagy\u00e1gite" } ], "names": [ "Nagy\u00e1gite" ], "chemicalFormula": "Pb$_{5}$Au(Te,Sb)$_{4}$S$_{5-8}$ or AuPb(Sb,Bi)Te$_{2-3}$S$_{6}$ or (Te, Au)Pb(Pb, Sb)S$_{2}$", "properties": [ { "scalars": [ { "value": "Sulfosalt mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.HB.20a" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "02.11.10.01" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Tabular crystals , also massive granular" } ], "conditions": [ { "scalars": [ { "value": "often bent" } ], "name": "Note" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic, pseudotetragonal. Point Group: 2/m." } ], "name": "Crystal system" }, { "scalars": [ { "value": "Crossed twin lamellae observed on (001) sections" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {010}, excellent on {101}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Hackly" } ], "name": "Fracture" }, { "scalars": [ { "value": "Flexible, slightly malleable" } ], "name": "Tenacity" }, { "scalars": [ { "value": "1.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic, bright on fresh cleavage" } ], "name": "Luster" }, { "scalars": [ { "value": "Blackish lead-grey" } ], "name": "Streak" }, { "scalars": [ { "value": "7.35-7.49" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Weak" } ], "name": "Pleochroism" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Aguilarite", "title": "Wikipedia: Aguilarite" } ], "names": [ "Aguilarite" ], "chemicalFormula": "Ag$_{4}$SeS", "properties": [ { "scalars": [ { "value": "Sulfosalt minerals" } ], "name": "Category" }, { "scalars": [ { "value": "2.BA.55" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "2.4.1.3" } ], "name": "Dana classification" }, { "scalars": [ { "value": "4.2478(2)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "6.9432(3)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "8.0042(5)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "100.103(2)" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Bright lead-gray on fresh surfaces, dull iron-black on exposure-air." } ], "name": "Color" }, { "scalars": [ { "value": "Monoclinic{sfnBindiPingi-re2013p=21" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None observed" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Hackly" } ], "name": "Fracture" }, { "scalars": [ { "value": "Sectile" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2.5 1-1.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Non-fluorescent" } ], "name": "fluorescence" }, { "scalars": [ { "value": "Gray-black" } ], "name": "Streak" }, { "scalars": [ { "value": "P2$_{1}$/n" } ], "name": "Space group" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Aheylite", "title": "Wikipedia: Aheylite" } ], "names": [ "Aheylite" ], "chemicalFormula": "(Fe$^{2+}$,Zn)Al$_{6}$(OH)$_{8}$(PO$_{4}$)$_{4}$.4(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Phosphate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.DD.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "7.885" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "10.199" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "7.672" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "110.84" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\alpha$)" }, { "scalars": [ { "value": "115.12" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "67.51" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\gamma$)" }, { "scalars": [ { "value": "1" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Very pale blue, pale green,-blue-green" } ], "name": "Color" }, { "scalars": [ { "value": "Interlocked crystals in felted and matted aggregates forming botryoidal, spherulitic masses, radiating, prismatic groups" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Triclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect {001}, {010} good" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Hackly-splintery" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5-5.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Porcelaneous-subvitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "White-greenish white" } ], "name": "Streak" }, { "scalars": [ { "value": "2.84" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "~1.63" } ], "name": "Refractive index" }, { "scalars": [ { "value": "Triclinic pedial 1 or $\\bar{1}$" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Ahlfeldite", "title": "Wikipedia: Ahlfeldite" } ], "names": [ "Ahlfeldite" ], "chemicalFormula": "(Ni,Co)SeO$_{3}$.2H$_{2}$O", "properties": [ { "scalars": [ { "value": "Selenite mineral" } ], "name": "Category" }, { "scalars": [ { "value": "04.JH.10" } ], "name": "Strunz classification" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Nelenite", "title": "Wikipedia: Nelenite" } ], "names": [ "Nelenite" ], "chemicalFormula": "(Mn,Fe)$_{16}$As$_{3}$Si$_{12}$O$_{36}$(OH)$_{17}$ or", "properties": [ { "scalars": [ { "value": "Phyllosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.EE.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "23.24" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "13.41" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "7.38 $\\beta$=105.21$^{\\circ}$" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "Light-medium brown" } ], "name": "Color" }, { "scalars": [ { "value": "Coarsely granular-massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {0001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, resinous" } ], "name": "Luster" }, { "scalars": [ { "value": "Light brown" } ], "name": "Streak" }, { "scalars": [ { "value": "3.46" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.718" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.700" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.018" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Visible $\\epsilon$=colorless and $\\omega$=light brown" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "$\\bar{3}$2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "R$\\bar{3}$m" } ], "name": "Space group" }, { "scalars": [ { "value": "Trigonal hexagonal scalenohedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Agrellite", "title": "Wikipedia: Agrellite" } ], "names": [ "Agrellite" ], "chemicalFormula": "NaCa$_{2}$Si$_{4}$O$_{10}$F", "properties": [ { "scalars": [ { "value": "Inosilicates" } ], "name": "Category" }, { "scalars": [ { "value": "White, grayish-white, greenish-white" } ], "name": "Color" }, { "scalars": [ { "value": "Lath-shaped like a small, thin plaster lath, rectangular in shape" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Triclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "09.DH.75" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "perfect [110]" } ], "name": "Cleavage" }, { "scalars": [ { "value": "5.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "pearly" } ], "name": "Luster" }, { "scalars": [ { "value": "1.567" } ], "name": "Refractive index (n$\\alpha$)" }, { "scalars": [ { "value": "1.579" } ], "name": "Refractive index (n$\\beta$)" }, { "scalars": [ { "value": "1.581" } ], "name": "Refractive index (n$\\gamma$)" }, { "scalars": [ { "value": "0.014" } ], "name": "Birefringence" }, { "scalars": [ { "value": "white" } ], "name": "Streak" }, { "scalars": [ { "value": "2.88" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Santite", "title": "Wikipedia: Santite" } ], "names": [ "Santite" ], "chemicalFormula": "KB$_{5}$O$_{8}$.4H$_{2}$O", "properties": [ { "scalars": [ { "value": "Nesoborates" } ], "name": "Category" }, { "scalars": [ { "value": "06.EA.10" } ], "name": "Strunz classification" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Cabriite", "title": "Wikipedia: Cabriite" } ], "names": [ "Cabriite" ], "chemicalFormula": "Pd$_{2}$SnCu", "properties": [ { "scalars": [ { "value": "Platinum Group mineral" } ], "name": "Category" }, { "scalars": [ { "value": "01.AG.30" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "1.2.11" } ], "name": "Dana classification" }, { "scalars": [ { "value": "395.10" } ], "units": "gm", "name": "Molecular weight" }, { "scalars": [ { "value": "grey white" } ], "name": "Color" }, { "scalars": [ { "value": "Orthorhombic-Dipyramidal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "4-4.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "detectable" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "none" } ], "name": "fluorescence" }, { "scalars": [ { "value": "11.1 10.7" } ], "conditions": [ { "scalars": [ { "value": "measured" }, { "value": "calculated" } ], "name": "Note" } ], "name": "Density" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Cafetite", "title": "Wikipedia: Cafetite" } ], "names": [ "Cafetite" ], "chemicalFormula": "(Ca,Mg)(Ti,Al)$_{2}$O$_{4}$(OH)$_{2}$", "properties": [ { "scalars": [ { "value": "oxide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "4.FL.75" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "31.34" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "12.14" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "4.97" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "90" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "12" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Pale yellow-colorless" } ], "name": "Color" }, { "scalars": [ { "value": "Elongated columnar-acicular crystals, fibrous aggregates" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic, pseudo-orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Prismatic" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "4-5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine" } ], "name": "Luster" }, { "scalars": [ { "value": "1.95" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { 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4.69" } ], "conditions": [ { "scalars": [ { "value": "g/mL" }, { "value": "g/mL" } ], "name": "Note" } ], "name": "Density" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Margarite", "title": "Wikipedia: Margarite" } ], "names": [ "Margarite" ], "chemicalFormula": "CaAl$_{2}$(Al$_{2}$Si$_{2}$)O$_{10}$(OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Micas" } ], "conditions": [ { "scalars": [ { "value": "phyllosilicates" } ], "name": "Note" } ], "name": "Category" }, { "scalars": [ { "value": "09.EC.30" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "flesh pink" } ], "name": "Color" }, { "scalars": [ { "value": "platy" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "basal" } ], "name": "Cleavage" }, { "scalars": [ { "value": "4" } ], "name": "Mohs scale hardness" } ] }, { "category": "system.chemical", "ids": [], 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"26.6.4.1" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Colorless, white-pale grey" } ], "name": "Color" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Distinct/Good, Probable on {100} and {010}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "~2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "0.055" } ], "name": "Birefringence" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Gunningite", "title": "Wikipedia: Gunningite" } ], "names": [ "Gunningite" ], "chemicalFormula": "(Zn,Mn$^{2+}$)SO$_{4}$.H$_{2}$O", "properties": [ { "scalars": [ { "value": "Sulfate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "07.CB.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "29.6.2.5" } ], "name": "Dana classification" }, { "scalars": [ { "value": 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"Luster" }, { "scalars": [ { "value": "1.631-1.650" } ], "name": "Refractive index (n$\\omega$)" }, { "scalars": [ { "value": "1.633-1.646" } ], "name": "Refractive index (n$\\epsilon$)" }, { "scalars": [ { "value": "0.002" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Fluorescent and phosphorescent." } ], "name": "fluorescence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.1-3.2" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Phosphophyllite", "title": "Wikipedia: Phosphophyllite" } ], "names": [ "Phosphophyllite" ], "chemicalFormula": "hydrated zinc phosphate Zn$_{2}$Fe(PO$_{4}$)$_{2}$.4H$_{2}$O", "properties": [ { "scalars": [ { "value": "Phosphate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "448.40" } ], "units": "g mol$^{-1}$", "name": "Molecular weight" }, { "scalars": [ { "value": "08.CA.40" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "blue-green-colourless" } ], "name": "Color" }, { "scalars": [ { "value": "prismatic" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "common" } ], "name": "Twinning" }, { "scalars": [ { "value": "[100] Perfect, [010] Distinct, [102] Distinct" } ], "name": "Cleavage" }, { "scalars": [ { "value": "conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "3.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.59-1.62" } ], "name": "Refractive index" }, { "scalars": [ { "value": "0.021" } ], "name": "Birefringence" }, { "scalars": [ { "value": "white" } ], "name": "Streak" }, { "scalars": [ { "value": "3.1" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Mn" } ], "name": "impurities" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Thomasclarkite-(Y)", "title": "Wikipedia: Thomasclarkite-(Y)" } ], "names": [ "Thomasclarkite-(Y)" ], "chemicalFormula": "(Na, Ce)(Y, REE)(HCO$_{3}$)(OH)$_{3}$.4(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Rare earth mineral" } ], "name": "Category" }, { "scalars": [ { "value": "375.77" } ], "units": "gm", "name": "Molecular weight" }, { "scalars": [ { "value": "White, yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Blocky crystals pseudo-tetragonal" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic-Sphenoidal H-M Symbol (2) Space Group: P 2" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Common on (101)" } ], "name": "Twinning" }, { "scalars": [ { "value": "[010] Perfect, [101] Parting" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Very brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2-3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "conditions": [ { "scalars": [ { "value": "Glassy" } ], "name": "Note" } ], "name": "Luster" }, { "scalars": [ { "value": "1.40" } ], "name": "Refractive index ($\\alpha$)" }, { "scalars": [ { "value": "1.540" } ], "name": "Refractive index ($\\beta$)" }, { "scalars": [ { "value": "1.540" } ], "name": "Refractive index ($\\gamma$)" }, { "scalars": [ { "value": "0.140" } ], "name": "Birefringence" }, { "scalars": [ { "value": "white" } ], "name": "Streak" }, { "scalars": [ { "value": "2.30" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Radioactivity770 Bq/g" } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Zektzerite", "title": "Wikipedia: Zektzerite" } ], "names": [ "Zektzerite" ], "chemicalFormula": "LiNa(Zr,Ti,Hf)Si$_{6}$O$_{15}$", "properties": [ { "scalars": [ { "value": "Mineral" } ], "conditions": [ { "scalars": [ { "value": "Inosilicate" } ], "name": "Note" } ], "name": "Category" }, { "scalars": [ { "value": "09.DN.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "529.66" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "Colorless-pink, cream, or white, commonly zoned" } ], "name": "Color" }, { "scalars": [ { "value": "S-ut pseudohexagonal prisms" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic-Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: C mca" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{100} and {010} perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-pearly" } ], "name": "Luster" }, { "scalars": [ { "value": "1.582" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.584" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.584" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "Light yellow" } ], "name": "fluorescence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.79" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Ferrihydrite", "title": "Wikipedia: Ferrihydrite" } ], "names": [ "Ferrihydrite" ], "chemicalFormula": "(Fe$^{3+}$)$_{2}$O$_{3}$.0.5H$_{2}$O", "properties": [ { "scalars": [ { "value": "Oxide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "04.FE.35" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "04.03.02.02" } ], "name": "Dana classification" }, { "scalars": [ { "value": "2.96" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "9.4" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "1" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "168.70" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "Dark brown, yellow-brown" } ], "name": "Color" }, { "scalars": [ { "value": "Aggregates, microscopic crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Yellow-brown" } ], "name": "Streak" }, { "scalars": [ { "value": "3.8" } ], "conditions": [ { "scalars": [ { "value": "g/cm$^3$" } ], "name": "Note" } ], "name": "Density" }, { "scalars": [ { "value": "$\\bar{3}$2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P$\\bar{3}$1c" } ], "name": "Space group" }, { "scalars": [ { "value": "Trigonal hexagonal scalenohedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Ikaite", "title": "Wikipedia: Ikaite" } ], "names": [ "Ikaite" ], "chemicalFormula": "CaCO$_{3}$.6H$_{2}$O", "properties": [ { "scalars": [ { "value": "Carbonate mineral, hydrous carbonates subgroup" } ], "name": "Category" }, { "scalars": [ { "value": "05.CB.25" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "White when pure" } ], "name": "Color" }, { "scalars": [ { "value": "Nearly square prism, pyramidal, sigmoidal: square prism capped with oppositely canted pyramids, massive, tubular" } ], "conditions": [ { "scalars": [ { "value": "tinolite vr." } ], "name": "Note" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic class 2/m" } ], "name": "Crystal system" }, { "scalars": [ { "value": "3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Dull" } ], "name": "Luster" }, { "scalars": [ { "value": "1.455" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.538" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.545" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "d=0.090" } ], "name": "Birefringence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "1.83" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Decomposes in-water and calcite above 8 $^{\\circ}$C" } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Monohydrocalcite", "title": "Wikipedia: Monohydrocalcite" } ], "names": [ "Monohydrocalcite" ], "chemicalFormula": "CaCO$_{3}$.H$_{2}$O", "properties": [ { "scalars": [ { "value": "Carbonate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "05.CB.20" } ], "name": "Strunz classification" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Wadsleyite", "title": "Wikipedia: Wadsleyite" } ], "names": [ "Wadsleyite" ], "chemicalFormula": "Mg$_{2}$SiO$_{4}$", "properties": [ { "scalars": [ { "value": "Sorosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.BE.02" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.7" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "11.71" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "8.24" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Dark green" } ], "name": "Color" }, { "scalars": [ { "value": "Microcrystalline aggregates" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic (Horiuchi and Sawamo-, 1981), or monoclinic (Smyth et al., 1997)" } ], "name": "Crystal system" }, { "scalars": [ { "value": "3.84" } ], "conditions": [ { "scalars": [ { "value": "calculated" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.76" } ], "name": "Refractive index (n)" }, { "scalars": [ { "value": "2/m2/m2/m" } ], "name": "Point group" }, { "scalars": [ { "value": "''Imma''" } ], "name": "Space group" }, { "scalars": [ { "value": "2/m" } ], "name": "Point group" }, { "scalars": [ { "value": "''I''2/''m''" } ], "name": "Space group" }, { "scalars": [ { "value": "or monoclinic" } ], "name": "Symmetry" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Ringwoodite", "title": "Wikipedia: Ringwoodite" } ], "names": [ "Ringwoodite" ], "chemicalFormula": "Mg$_{2}$SiO$_{4}$", "properties": [ { "scalars": [ { "value": "Nesosilicates, Spinel group" } ], "name": "Category" }, { "scalars": [ { "value": "09.AC.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "8.113" } ], "units": "$\\AA$", "name": "Unit cell (''a'')" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Microcrystalline aggregates" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Cubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "3.564" }, { "value": "3.691 , 4.845" } ], "conditions": [ { "scalars": [ { "value": "Fo100" }, { "value": "Fo90" }, { "value": "Fa100" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.8" } ], "name": "Refractive index (n)" }, { "scalars": [ { "value": "none" } ], "name": "Birefringence" }, { "scalars": [ { "value": "none" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "4/''m''$\\bar{3}$2/''m''" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "''Fd''$\\bar{3}$''m''" } ], "name": "Space group" }, { "scalars": [ { "value": "Isometric hexoctahedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Routhierite", "title": "Wikipedia: Routhierite" } ], "names": [ "Routhierite" ], "chemicalFormula": "Tl(Cu,Ag)(Hg,Zn)$_{2}$(As,Sb)$_{2}$S$_{6}$", "properties": [ { "scalars": [ { "value": "Sulfosalt mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.GA.40" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "9.9821(11)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "11.3122(12)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Violet-red" } ], "name": "Color" }, { "scalars": [ { "value": "Anhedral grains, xenomorphic grains and veinlets" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Tetragonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Microscopic polysynthetic twin lamellae" } ], "name": "Twinning" }, { "scalars": [ { "value": "2, two perpendicular" } ], "name": "Cleavage" }, { "scalars": [ { "value": "3.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Weak" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "5.83" } ], "name": "Density" }, { "scalars": [ { "value": "4mm" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "I 4mm" } ], "name": "Space group" }, { "scalars": [ { "value": "Tetragonal ditetragonal pyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Hydrogrossular", "title": "Wikipedia: Hydrogrossular" } ], "names": [ "Hydrogrossular" ], "chemicalFormula": "Ca$_{3}$Al$_{2}$(SiO$_{4}$)$_{3-x}$(OH)$_{4x}$", "properties": [ { "scalars": [ { "value": "Silicate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "green-bluish green, pink, white, gray" } ], "name": "Color" }, { "scalars": [ { "value": "Massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "cubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "none" } ], "name": "Cleavage" }, { "scalars": [ { "value": "conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "7-7.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "vitreous-subadamantine" } ], "name": "Polish" }, { "scalars": [ { "value": "1.810" } ], "name": "Refractive index" }, { "scalars": [ { "value": "none" } ], "name": "Birefringence" }, { "scalars": [ { "value": "none" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "inert" } ], "name": "fluorescence" }, { "scalars": [ { "value": "dark green hydrogrossular often shows cu-ff below 460nm. Other color s-nes may show line around 463nm, indicating some idocrase content" } ], "name": "absorption" }, { "scalars": [ { "value": "4.15" } ], "conditions": [ { "scalars": [ { "value": "+.05,-.03" } ], "name": "Note" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Malaia_garnet", "title": "Wikipedia: Malaia garnet" } ], "names": [ "Malaia garnet" ], "chemicalFormula": "(Mg,Mn)$_{3}$Al$_{2}$(SiO$_{4}$)$_{3}$", "properties": [ { "scalars": [ { "value": "Varietal name" } ], "name": "Category" }, { "scalars": [ { "value": "light-dark slightly pinkish orange, reddish orange, yellowish orange" } ], "name": "Color" }, { "scalars": [ { "value": "cubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "none, may show indistinct parting" } ], "name": "Cleavage" }, { "scalars": [ { "value": "conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "7-7.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "vitreous-subadamantine" } ], "name": "Polish" }, { "scalars": [ { "value": "1.760" } ], "name": "Refractive index" }, { "scalars": [ { "value": "none" } ], "name": "Birefringence" }, { "scalars": [ { "value": "none" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "inert" } ], "name": "fluorescence" }, { "scalars": [ { "value": "strong lines at 410, 420, 430nm, that may merge-form cu-ff below 435nm. Also some combination of lines at 460, 480, 504, 520, or 573nm." } ], "name": "absorption" }, { "scalars": [ { "value": "3.78-3.85" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Langbeinite", "title": "Wikipedia: Langbeinite" } ], "names": [ "Langbeinite" ], "chemicalFormula": "K$_{2}$Mg$_{2}$(SO$_{4}$)$_{3}$", "properties": [ { "scalars": [ { "value": "Sulfate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "07.AC.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "9.92" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless with pale shades of yellow, pink, red, green, gray" } ], "name": "Color" }, { "scalars": [ { "value": "As nodules, disseminated grains, bedded massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Cubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3.5-4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "2.83" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.5329-1.5347" } ], "name": "Refractive index (n)" }, { "scalars": [ { "value": "Slowly dissolves in water" } ], "name": "Solubility" }, { "scalars": [ { "value": "Piezoelectric" } ], "name": "Other" }, { "scalars": [ { "value": "2 3" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 2$_{1}$3" } ], "name": "Space group" }, { "scalars": [ { "value": "Isometric tetartoidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Portlandite", "title": "Wikipedia: Portlandite" } ], "names": [ "Portlandite" ], "chemicalFormula": "Ca(OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Oxide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "04.FE.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "06.02.01.04 Brucite group" } ], "name": "Dana classification" }, { "scalars": [ { "value": "3.589" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "4.911" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "1" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless, white-greenish white" } ], "name": "Color" }, { "scalars": [ { "value": "Hexagonal plates, commonly fibrous, powdery, massive." } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {0001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Sectile with flexible cleavage plates" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Pearly on cleavages" } ], "name": "Luster" }, { "scalars": [ { "value": "2.23" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.574" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.547" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.027" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Soluble in water producing an alkaline solution" } ], "name": "Solubility" }, { "scalars": [ { "value": "Trigonal ($\\bar{3}$ 2/m)-hexagonal scalenohedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Neptunite", "title": "Wikipedia: Neptunite" } ], "names": [ "Neptunite" ], "chemicalFormula": "KNa$_{2}$Li(Fe$^{2+}$,Mn$^{2+}$)$_{2}$Ti$_{2}$Si$_{8}$O$_{24}$", "properties": [ { "scalars": [ { "value": "Phyllosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "70.04.01.01" } ], "name": "Dana classification" }, { "scalars": [ { "value": "09.EH.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "16.427(2)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "12.478(2)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "9.975(1)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "115.56(1)" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Black, deep red-brown in thin fragments" } ], "name": "Color" }, { "scalars": [ { "value": "Prismatic or tabular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Interpenetrant on {301}" } ], "name": "Twinning" }, { "scalars": [ { "value": "{110} good" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.69-1.6908" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.6927-1.7" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.7194-1.736" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.0294-0.0452" } ], "name": "Birefringence" }, { "scalars": [ { "value": "x=yellow-orange, y=orange, z=deep red" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Brown-red brown" } ], "name": "Streak" }, { "scalars": [ { "value": "3.19-3.23" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Piezoelectric" } ], "name": "Other" }, { "scalars": [ { "value": "Cc" } ], "name": "Monoclinic domatic H-M Symbol (m) Space Group" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Thaumasite", "title": "Wikipedia: Thaumasite" } ], "names": [ "Thaumasite" ], "chemicalFormula": "Ca$_{3}$Si(OH)$_{6}$(CO$_{3}$)(SO$_{4}$).12H$_{2}$O", "properties": [ { "scalars": [ { "value": "Sulfate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "07.DG.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "11.030(7)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "10.396(6)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "622.62" } ], "units": "g/mol", "name": "Molecular weight" }, { "scalars": [ { "value": "Colorless, white, pale yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Prismatic, fibrous, massive, radial" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Hexagonal dipyramidal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Indistinct" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Subconchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-silky" } ], "name": "Luster" }, { "scalars": [ { "value": "1.498-1.507" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.458-1.470" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.039" } ], "name": "Birefringence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "1.877" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Hexagonal 6" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Magnesioferrite", "title": "Wikipedia: Magnesioferrite" } ], "names": [ "Magnesioferrite" ], "chemicalFormula": "Mg(Fe$^{3+}$)$_{2}$O$_{4}$", "properties": [ { "scalars": [ { "value": "Oxide minerals, Spinel group, Spinel structural group" } ], "name": "Category" }, { "scalars": [ { "value": "04.BB.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "8.3866" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Black-brownish black" } ], "name": "Color" }, { "scalars": [ { "value": "As octahedral crystals, massive granular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Cubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Twin plane {111}, contact twins" } ], "name": "Twinning" }, { "scalars": [ { "value": "On {111}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "6-6.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic, semimetallic, dull" } ], "name": "Luster" }, { "scalars": [ { "value": "Dark red" } ], "name": "Streak" }, { "scalars": [ { "value": "4.55-4.65" } ], "conditions": [ { "scalars": [ { "value": "measured" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.38" } ], "name": "Refractive index (n)" }, { "scalars": [ { "value": "Magnetic" } ], "name": "Other" }, { "scalars": [ { "value": "4/m$\\bar{3}$2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "F d3m" } ], "name": "Space group" }, { "scalars": [ { "value": "Isometric hexoctahedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Nissonite", "title": "Wikipedia: Nissonite" } ], "names": [ "Nissonite" ], "chemicalFormula": "Cu$_{2}$Mg$_{2}$(PO$_{4}$)$_{2}$(OH)$_{2}$.5H$_{2}$O", "properties": [ { "scalars": [ { "value": "Phosphate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "08.DC.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Fluor-buergerite", "title": "Wikipedia: Fluor-buergerite" } ], "names": [ "Fluor-buergerite" ], "chemicalFormula": "NaFe$^{3+}$$_{3}$Al$_{6}$(BO$_{3}$)$_{3}$Si$_{6}$O$_{18}$(O,F,OH)$_{4}$", "properties": [ { "scalars": [ { "value": "Cyclosilicate , tourmaline" } ], "name": "Category" }, { "scalars": [ { "value": "09.CK.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Bronze, dark brown, black" } ], "name": "Color" }, { "scalars": [ { "value": "Trigonal-ditrigonal pyramidal (3m)" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Distinct prismatic" } ], "name": "Cleavage" }, { "scalars": [ { "value": "7" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "1.735" } ], "name": "Refractive index (n$\\omega$)" }, { "scalars": [ { "value": "1.655" } ], "name": "Refractive index (n$\\epsilon$)" }, { "scalars": [ { "value": "0.080" } ], "name": "Birefringence" }, { "scalars": [ { "value": "yellowish brown" } ], "name": "Streak" }, { "scalars": [ { "value": "3.31" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Pyroelectric and piezoelectric" } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Niningerite", "title": "Wikipedia: Niningerite" } ], "names": [ "Niningerite" ], "chemicalFormula": "MnS", "properties": [ { "scalars": [ { "value": "Sulfide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "02.CD.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.2" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "grey" } ], "name": "Color" }, { "scalars": [ { "value": "3.5-4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "isometric" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Herbertsmithite", "title": "Wikipedia: Herbertsmithite" } ], "names": [ "Herbertsmithite" ], "chemicalFormula": "ZnCu$_{3}$(OH)$_{6}$Cl$_{2}$", "properties": [ { "scalars": [ { "value": "Halide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "03.DA.10c" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "6.834" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "14.075" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "3" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Light green, blue-green" } ], "name": "Color" }, { "scalars": [ { "value": "Aggregates of rhombohedral crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Good on {10$\\bar{1}$1}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3-3.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-adamantine" } ], "name": "Luster" }, { "scalars": [ { "value": "n$_{\\epsilon}$" } ], "name": "Refractive index" }, { "scalars": [ { "value": "1.817" } ], "name": "Refractive index" }, { "scalars": [ { "value": "n$_{\\omega}$" } ], "name": "Refractive index" }, { "scalars": [ { "value": "1.825" } ], "name": "Refractive index" }, { "scalars": [ { "value": "0.0080" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Light green" } ], "name": "Streak" }, { "scalars": [ { "value": "3.75-3.95" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "$\\bar{3}$2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "R$\\bar{3}$m" } ], "name": "Space group" }, { "scalars": [ { "value": "Trigonal hexagonal scalenohedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Hectorite", "title": "Wikipedia: Hectorite" } ], "names": [ "Hectorite" ], "chemicalFormula": "Na$_{0.3}$(Mg,Li)$_{3}$Si$_{4}$O$_{10}$(OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Phyllosilicates, Smectite" } ], "name": "Category" }, { "scalars": [ { "value": "09.EC.45" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.25" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "9.18" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "16" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "99" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "White, cream, pale brown, mottled" } ], "name": "Color" }, { "scalars": [ { "value": "Thin laths and aggregates" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "[001] Perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "1-2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Earthy-waxy" } ], "name": "Luster" }, { "scalars": [ { "value": "1.490" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.500" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.520" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.030" } ], "name": "Birefringence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2-3" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "C 2/m" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Brianite", "title": "Wikipedia: Brianite" } ], "names": [ "Brianite" ], "chemicalFormula": "Na$_{2}$CaMg(PO$_{4}$)$_{2}$", "properties": [ { "scalars": [ { "value": "Phosphate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.AC.30" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "13.36" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.23" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "9.13" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "91.2" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "Colorless" } ], "name": "Color" }, { "scalars": [ { "value": "Anhedral grains with lamellar structur visible under polarized light" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Polysynthetic on {100}" } ], "name": "Twinning" }, { "scalars": [ { "value": "4-5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "3.0-3.1" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.598" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.605" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.608" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.010" } ], "name": "Birefringence" }, { "scalars": [ { "value": "2-3$^{\\circ}$ from lamellae" } ], "name": "extinction" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 2$_{1}$/a" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Hydrokenoelsmoreite", "title": "Wikipedia: Hydrokenoelsmoreite" } ], "names": [ "Hydrokenoelsmoreite" ], "chemicalFormula": "\\xe2\\x96\\xa1$_{2}$W$_{2}$O$_{6}$H$_{2}$O", "properties": [ { "scalars": [ { "value": "Oxide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "04.DH.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "White" } ], "name": "Color" }, { "scalars": [ { "value": "Isometric" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Splintery" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Ekanite", "title": "Wikipedia: Ekanite" } ], "names": [ "Ekanite" ], "chemicalFormula": "Ca$_{2}$ThSi$_{8}$O$_{20}$ or (Ca,Fe,Pb)$_{2}$(Th,U)Si$_{8}$O$_{20}$", "properties": [ { "scalars": [ { "value": "Silicate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "Green, yellow, dark red" } ], "name": "Color" }, { "scalars": [ { "value": "Pyramidal crystals, granular-massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Tetragonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Distinct on {101}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle, uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "4.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.580" } ], "name": "Refractive index (n$\\omega$)" }, { "scalars": [ { "value": "1.568" } ], "name": "Refractive index (n$\\epsilon$)" }, { "scalars": [ { "value": "0.012" } ], "name": "Birefringence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.95-3.28" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Radioactive, metamict" } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Jurbanite", "title": "Wikipedia: Jurbanite" } ], "names": [ "Jurbanite" ], "chemicalFormula": "AlSO$_{4}$(OH).5H$_{2}$O", "properties": [ { "scalars": [ { "value": "Sulfate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "07.DB.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "31.9.10.1" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Colourless" } ], "name": "Color" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.786" } ], "conditions": [ { "scalars": [ { "value": "g/cm$^{3}$" } ], "name": "Note" } ], "name": "Density" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Moonstone_(gemstone)", "title": "Wikipedia: Moonstone (gemstone)" } ], "names": [ "Moonstone (gemstone)" ], "chemicalFormula": "AlSO$_{4}$(OH).5H$_{2}$O", "properties": [ { "scalars": [ { "value": "Feldspar variety" } ], "name": "Category" }, { "scalars": [ { "value": "Can be numerous colors, including blue, grey, white, pink, peach, green and brown" } ], "name": "Color" }, { "scalars": [ { "value": "uneven-conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "6.0" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Opalescent" } ], "name": "Luster" }, { "scalars": [ { "value": "white" } ], "name": "Streak" }, { "scalars": [ { "value": "2.61" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Mackinawite", "title": "Wikipedia: Mackinawite" } ], "names": [ "Mackinawite" ], "chemicalFormula": "(Fe,Ni)$_{1 + x}$S (where x = 0 to 0.11)", "properties": [ { "scalars": [ { "value": "Sulfide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.CC.25" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "3.67" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.03" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "85.42" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "Bronze-white grey" } ], "name": "Color" }, { "scalars": [ { "value": "As well-formed thin tabular crystals, massive, fine-feathery" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Tetragonal-ditetragonal dipyramidal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Black" } ], "name": "Streak" }, { "scalars": [ { "value": "4.17" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Tetragonal 4/m 2/m 2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Jadarite", "title": "Wikipedia: Jadarite" } ], "names": [ "Jadarite" ], "chemicalFormula": "LiNaSiB$_{3}$O$_{7}$OH", "properties": [ { "scalars": [ { "value": "Nesosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.AJ.40" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "6.816(2)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "13.789(2)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.758(2)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "111.08(2)" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "White" } ], "name": "Color" }, { "scalars": [ { "value": "As microscopic anhedral grains" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Irregular-conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "4-5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Dull" } ], "name": "Luster" }, { "scalars": [ { "value": "Weak pink-orange under UV" } ], "name": "fluorescence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.45" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Monoclinic 2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Jarosewichite", "title": "Wikipedia: Jarosewichite" } ], "names": [ "Jarosewichite" ], "chemicalFormula": "Mn$^{2+}$$_{3}$Mn$^{3+}$(AsO$_{4}$)(OH)$_{6}$", "properties": [ { "scalars": [ { "value": "Arsenate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "08.BE.70" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "6.56" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "25.2" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "10" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Very dark red" } ], "name": "Color" }, { "scalars": [ { "value": "Prismatic crystals occurring typically as divergent sprays" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None observed" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Irregular-uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Subvitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "Reddish orange" } ], "name": "Streak" }, { "scalars": [ { "value": "3.66" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.780" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.795" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.805" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.025" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Weak" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "2 2 2" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "Cmmm or C222" } ], "name": "Space group" }, { "scalars": [ { "value": "Orthorhombic disphenoidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Renierite", "title": "Wikipedia: Renierite" } ], "names": [ "Renierite" ], "chemicalFormula": "(Cu,Zn)$_{11}$(Ge,As)$_{2}$Fe$_{4}$S$_{16}$", "properties": [ { "scalars": [ { "value": "Sulfide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.CB.35a" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Bronze yellow, pinkish brown" } ], "name": "Color" }, { "scalars": [ { "value": "granular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Tetragonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "absent" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "4.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "opaque" } ], "name": "Refractive index" }, { "scalars": [ { "value": "dark gray" } ], "name": "Streak" }, { "scalars": [ { "value": "4.4" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Brammallite", "title": "Wikipedia: Brammallite" } ], "names": [ "Brammallite" ], "chemicalFormula": "(Na,H$_{3}$O)(Al,Mg,Fe)$_{2}$(Si,Al)$_{4}$O$_{10}$[(OH)$_{2}$.(H$_{2}$O)]", "properties": [ { "scalars": [ { "value": "Phyllosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "White" } ], "name": "Color" }, { "scalars": [ { "value": "Earthy clay like" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic prismatic 2/m" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "2.5-3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Dull, earthy" } ], "name": "Luster" }, { "scalars": [ { "value": "1.535-1.570" } ], "name": "Refractive index (n$\\alpha$)" }, { "scalars": [ { "value": "1.555-1.600" } ], "name": "Refractive index (n$\\beta$)" }, { "scalars": [ { "value": "1.565-1.605" } ], "name": "Refractive 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"scalars": [ { "value": "1.60" } ], "name": "Refractive index (n$\\alpha$)" }, { "scalars": [ { "value": "1.66" } ], "name": "Refractive index (n$\\beta$)" }, { "scalars": [ { "value": "1.67" } ], "name": "Refractive index (n$\\gamma$)" }, { "scalars": [ { "value": "olive green-green-brown" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "2.92-2.96" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "loses water" } ], "name": "Fusibility" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Hyalophane", "title": "Wikipedia: Hyalophane" } ], "names": [ "Hyalophane" ], "chemicalFormula": "(K,Ba)[Al(Si,Al)Si$_{2}$O$_{8}$]", "properties": [ { "scalars": [ { "value": "Tec-silicate" } ], "name": "Category" }, { "scalars": [ { "value": "8.52" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "12.95" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "7.14" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "116 Z=4" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "302.06" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "Colorless, yellow, white, red" } ], "name": "Color" }, { "scalars": [ { "value": "Crystalline-fine-occurs as well-formed fine sized crystals, massive-uniformly indistinguishable crystals forming large masses" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic-Prismatic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Commonly simple twins according-the Carlsbad, Manebach, or Baveno laws" } ], "name": "Twinning" }, { "scalars": [ { "value": "{001} perfect, {010} imperfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "6-6.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.542" } ], "name": "Refractive index (''n$_{\\alpha}$'')" }, { "scalars": [ { "value": "1.545" } ], "name": "Refractive index (''n$_{\\beta}$'')" }, { "scalars": [ { "value": "1.547" } ], "name": "Refractive index (''n$_{\\gamma}$'')" }, { "scalars": [ { "value": "0.005" } ], "name": "Birefringence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.81" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Monoclinic 2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Haxonite", "title": "Wikipedia: Haxonite" } ], "names": [ "Haxonite" ], "chemicalFormula": "(Fe,Ni)$_{23}$C$_{6}$", "properties": [ { "scalars": [ { "value": "Native element minerals" } ], "name": "Category" }, { "scalars": [ { "value": "01.BA.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Isometric" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Scorzalite", "title": "Wikipedia: Scorzalite" } ], "names": [ "Scorzalite" ], "chemicalFormula": "(Fe$^{2+}$,Mg)Al$_{2}$(OH,PO$_{4}$)$_{2}$", "properties": [ { "scalars": [ { "value": "Phosphate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.BB.40" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "7.15" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "7.31" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "7.25" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "120.58" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Dark blue" } ], "name": "Color" }, { "scalars": [ { "value": "Granular, massive, dipyramidal crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Multiple, lamellar" } ], "name": "Twinning" }, { "scalars": [ { "value": "Good on {110}, indistinct on {101}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.33" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.626-1.645" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.654-1.674" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.663-1.680" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.037" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Visible X=colorless, Y=Z=blue" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 2/c" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Ord\u00f3\u00f1ezite", "title": "Wikipedia: Ord\u00f3\u00f1ezite" } ], "names": [ "Ord\u00f3\u00f1ezite" ], "chemicalFormula": "ZnSb$_{2}$O$_{6}$", "properties": [ { "scalars": [ { "value": "Antimonate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "04.DB.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "4.66" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "9.26" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Very light-very dark brown, colorless-pearl-gray, light yellowish olive-dark olive" } ], "name": "Color" }, { "scalars": [ { "value": "Pyramidal crystals in drusy or stalactitic masses" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Tetragonal ditetragonal dipyramidal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Common on {013}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "6.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine" } ], "name": "Luster" }, { "scalars": [ { "value": "6.635" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.02-2.04" } ], "name": "Refractive index (N)" }, { "scalars": [ { "value": "Tetragonal 4/m 2/m 2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Moganite", "title": "Wikipedia: Moganite" } ], "names": [ "Moganite" ], "chemicalFormula": "SiO$_{2}$", "properties": [ { "scalars": [ { "value": "Silicate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "04.DA.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "75.01.04.02" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic-prismatic (2/m)" } ], "name": "Crystal system" }, { "scalars": [ { "value": "6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Earthy, dull" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "1.524" } ], "name": "Refractive index (n$\\alpha$)" }, { "scalars": [ { "value": "1.531" } ], "name": "Refractive index (n$\\gamma$)" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Carrollite", "title": "Wikipedia: Carrollite" } ], "names": [ "Carrollite" ], "chemicalFormula": "CuCo$_{2}$S$_{4}$", "properties": [ { "scalars": [ { "value": "Sulfide mineral, Thiospinel group, Spinel structural group" } ], "name": "Category" }, { "scalars": [ { "value": "02.DA.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "2.10.1.2" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Light-dark grey, rarely tarnishes-copper red or violet gray" } ], "name": "Color" }, { "scalars": [ { "value": "Octahedral and cubic crystals, also massive, granular or compact" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Isometric, 4/m $\\bar{3}$ 2/m hexoctahedral" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{111} Polysynthetic or spinel twins" } ], "name": "Twinning" }, { "scalars": [ { "value": "Imperfect on {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal, subconchoidal or uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Very brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "4.5-5.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "n" } ], "name": "Refractive index" }, { "scalars": [ { "value": "is" } ], "name": "Refractive index" }, { "scalars": [ { "value": "not" } ], "name": "Refractive index" }, { "scalars": [ { "value": "determined" } ], "name": "Refractive index" }, { "scalars": [ { "value": "for" } ], "name": "Refractive index" }, { "scalars": [ { "value": "an" } ], "name": "Refractive index" }, { "scalars": [ { "value": "opaque" } ], "name": "Refractive index" }, { "scalars": [ { "value": "mineral" } ], "name": "Refractive index" }, { "scalars": [ { "value": "Grey black" } ], "name": "Streak" }, { "scalars": [ { "value": "4.5-4.8" }, { "value": "4.83" } ], "conditions": [ { "scalars": [ { "value": "measured" }, { "value": "calculated" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Minerals of the linneite group are partly etched by nitric acid, with slight effervescence." } ], "name": "Solubility" }, { "scalars": [ { "value": "Not radioactive, not fluorescent" } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Loparite-(Ce)", "title": "Wikipedia: Loparite-(Ce)" } ], "names": [ "Loparite-(Ce)" ], "chemicalFormula": "(Ce,Na,Ca)(Ti,Nb)O$_{3}$", "properties": [ { "scalars": [ { "value": "Oxide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "04.CC.35" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Black-grey-brown in thin section" } ], "name": "Color" }, { "scalars": [ { "value": "Cubic and octahedral crystals and massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Cubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Penetration twins common on [111]" } ], "name": "Twinning" }, { "scalars": [ { "value": "[100] Imperfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5.5-6.0" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic-sub-metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "2.26-2.38" } ], "name": "Refractive index (n)" }, { "scalars": [ { "value": "reddish brown" } ], "name": "Streak" }, { "scalars": [ { "value": "4.60-4.89" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Temagamite", "title": "Wikipedia: Temagamite" } ], "names": [ "Temagamite" ], "chemicalFormula": "Pd$_{3}$HgTe$_{3}$", "properties": [ { "scalars": [ { "value": "Telluride mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.BC.50" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Bright white-grey" } ], "name": "Color" }, { "scalars": [ { "value": "microscopic included grains" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Weak" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "9.5" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/L\u00e9vyne", "title": "Wikipedia: L\u00e9vyne" } ], "names": [ "L\u00e9vyne" ], "chemicalFormula": "Pd$_{3}$HgTe$_{3}$", "properties": [ { "scalars": [ { "value": "Zeolite" } ], "name": "Category" }, { "scalars": [ { "value": "09.GD.15" } ], "name": "Strunz classification" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Crossite", "title": "Wikipedia: Crossite" } ], "names": [ "Crossite" ], "chemicalFormula": "Na$_{2}$(Mg,Fe)$_{3}$(Al,Fe)$_{2}$Si$_{8}$O$_{22}$(OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Amphibole-Inosilicates" } ], "name": "Category" }, { "scalars": [ { "value": "blue, blue-green" } ], "name": "Color" }, { "scalars": [ { "value": "6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "light blue" } ], "name": "Streak" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Augelite", "title": "Wikipedia: Augelite" } ], "names": [ "Augelite" ], "chemicalFormula": "Al$_{2}$(PO$_{4}$)(OH)$_{3}$", "properties": [ { "scalars": [ { "value": "Phosphate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "08.BE.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "13.124(6)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "7.988(5)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.0633(3)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "112.25(2)" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless-white, may be yellowish-pale rose, greenish" } ], "name": "Color" }, { "scalars": [ { "value": "Tabular-prismatic or acicular crystals, massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {110}, good on {201}, imperfect on {001} and {101}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "4-4.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, pearly on {110} cleavage" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.696" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.574" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.576" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.588" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.014" } ], "name": "Birefringence" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "B2/m" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Maskelynite", "title": "Wikipedia: Maskelynite" } ], "names": [ "Maskelynite" ], "chemicalFormula": "Al$_{2}$(PO$_{4}$)(OH)$_{3}$", "properties": [ { "scalars": [ { "value": "Glass" } ], "name": "Category" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Howlite", "title": "Wikipedia: Howlite" } ], "names": [ "Howlite" ], "chemicalFormula": "Ca$_{2}$B$_{5}$SiO$_{9}$(OH)$_{5}$", "properties": [ { "scalars": [ { "value": "Inoborates" } ], "name": "Category" }, { "scalars": [ { "value": "06.CB.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "12.82" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "9.351(1)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "8.608(2)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "104.84(2)" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "White, colorless" } ], "name": "Color" }, { "scalars": [ { "value": "Massive-nodular, occurs as tabular prisms flattened parallel-[100]" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal, uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "3.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Subvitreous, glimmering" } ], "name": "Luster" }, { "scalars": [ { "value": "1.583-1.586" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.596-1.598" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.600" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.017" } ], "name": "Birefringence" }, { "scalars": [ { "value": "white" } ], "name": "Streak" }, { "scalars": [ { "value": "2.53-2.59" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 2$_{1}$/c" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Majorite", "title": "Wikipedia: Majorite" } ], "names": [ "Majorite" ], "chemicalFormula": "Mg$_{3}$(MgSi)(SiO$_{4}$)$_{3}$", "properties": [ { "scalars": [ { "value": "Nesosilicates" } ], "name": "Category" }, { "scalars": [ { "value": "09.AD.25" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "11.52" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Purple, pale yellowish brown, colorless" } ], "name": "Color" }, { "scalars": [ { "value": "Microcrystalline aggregates, acicular-equant grains in narrow veinlets" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Cubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "7-7.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "Measured at about 4" }, { "value": "3.51" } ], "conditions": [ { "scalars": [ { "value": "calculated for pure MgSiO$_{3}$" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.87-1.92" } ], "name": "Refractive index (n)" }, { "scalars": [ { "value": "slight" } ], "name": "Birefringence" }, { "scalars": [ { "value": "''Ia''$\\bar{3}$''d'' or tetragonal ''I''4$_{1}$/''a'' for pure MgSiO$_{3}$" } ], "name": "H-M symbol (4/m$\\bar{3}$2/m) Space Group" }, { "scalars": [ { "value": "Isometric hexoctahedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/L\u00f3pezite", "title": "Wikipedia: L\u00f3pezite" } ], "names": [ "L\u00f3pezite" ], "chemicalFormula": "K$_{2}$Cr$_{2}$O$_{7}$", "properties": [ { "scalars": [ { "value": "Sulfate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "07.FD.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Orange-red, red" } ], "name": "Color" }, { "scalars": [ { "value": "Triclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect, [010] perfect, [100] distinct, [001] distinct" } ], "name": "Cleavage" }, { "scalars": [ { "value": "2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "Light yellow" } ], "name": "Streak" }, { "scalars": [ { "value": "2.69" } ], "conditions": [ { "scalars": [ { "value": "g/cm$^{3}$" } ], "name": "Note" } ], "name": "Density" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Edingtonite", "title": "Wikipedia: Edingtonite" } ], "names": [ "Edingtonite" ], "chemicalFormula": "BaAl$_{2}$Si$_{3}$O$_{10}$.4H$_{2}$O", "properties": [ { "scalars": [ { "value": "Tec-silicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.GA.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Orthorhombic, some are tetragonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "4-5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "1.538" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.549" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.554" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.016" } ], "name": "Birefringence" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Bazzite", "title": "Wikipedia: Bazzite" } ], "names": [ "Bazzite" ], "chemicalFormula": "Be$_{3}$Sc$_{2}$Si$_{6}$O$_{18}$", "properties": [ { "scalars": [ { "value": "Silicate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "09.CJ.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "9.521" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "9.165" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Light-dark sky-blue, blue green" } ], "name": "Color" }, { "scalars": [ { "value": "Aggregates of subparallel prisms" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Hexagonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Indistinct on {0001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Irregular" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "6.5-7" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "Pale bluish white" } ], "name": "Streak" }, { "scalars": [ { "value": "2.77-2.85" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.622-1.637" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.602-1.622" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.0210" } ], "name": "Birefringence" }, { "scalars": [ { "value": "O=pale greenish yellow, E=intense sky-blue" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "6/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 6/mcc" } ], "name": "Space group" }, { "scalars": [ { "value": "Hexagonal dihexagonal dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Nahcolite", "title": "Wikipedia: Nahcolite" } ], "names": [ "Nahcolite" ], "chemicalFormula": "NaHCO$_{3}$", "properties": [ { "scalars": [ { "value": "Carbonate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "05.AA.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "13.01.01.01" } ], "name": "Dana classification" }, { "scalars": [ { "value": "7.47" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "9.68" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "3.48" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "93.38" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Elongated crystals, fibrous masses, friable porous aggregates" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Common on [101]" } ], "name": "Twinning" }, { "scalars": [ { "value": "{101} perfect, {111} good, {100} distinct" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-resinous" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.21" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.377" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.503" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.583" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.206" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Short UV=blue-white cream-yellow, Long UV=cream-yellow" } ], "name": "fluorescence" }, { "scalars": [ { "value": "Soluble in water" } ], "name": "Solubility" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 2$_{1}$/n" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/\u00c5kermanite", "title": "Wikipedia: \u00c5kermanite" } ], "names": [ "\u00c5kermanite" ], "chemicalFormula": "Ca$_{2}$Mg(Si$_{2}$O$_{7}$)", "properties": [ { "scalars": [ { "value": "Sorosilicates" } ], "name": "Category" }, { "scalars": [ { "value": "09.BB.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "55.4.1.1" } ], "conditions": [ { "scalars": [ { "value": "8 ed" } ], "name": "Note" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Colorless, yellowish gray, green, brown" } ], "name": "Color" }, { "scalars": [ { "value": "Tetragonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Distinct on {001}, poor on {110}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Irregular/ uneven, conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, resinous" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Osarizawaite", "title": "Wikipedia: Osarizawaite" } ], "names": [ "Osarizawaite" ], "chemicalFormula": "PbCuAl$_{2}$(SO$_{4}$)$_{2}$(OH)$_{6}$", "properties": [ { "scalars": [ { "value": "Sulfate minerals, alunite group" } ], "name": "Category" }, { "scalars": [ { "value": "07.BC.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "7.05" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "17.24(1)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "Greenish yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3-4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "3.89-4.037" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.712()" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.732(2)" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.020" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Visible" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "$\\bar{3}$m ($\\bar{3}$ 2/m)-Hexagonal Scalenohedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Meneghinite", "title": "Wikipedia: Meneghinite" } ], "names": [ "Meneghinite" ], "chemicalFormula": "CuPb$_{13}$ Sb$_{7}$S$_{24}$", "properties": [ { "scalars": [ { "value": "Sulfosalt mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.HB.05b" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Blackish lead-grey" } ], "name": "Color" }, { "scalars": [ { "value": "Prismatic-acicular, massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{010} perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Weak" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Black shining" } ], "name": "Streak" }, { "scalars": [ { "value": "6.36" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Eosphorite", "title": "Wikipedia: Eosphorite" } ], "names": [ "Eosphorite" ], "chemicalFormula": "MnAl(PO$_{4}$)(OH)$_{2}$.H$_{2}$O", "properties": [ { "scalars": [ { "value": "Phosphate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "08.DD.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "10.455(1)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "13.501(2)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.928(1)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "90" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Pink, rose red" } ], "name": "Color" }, { "scalars": [ { "value": "Prismatic in radiating sprays or spheres, massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "May be observed on {100} and {001}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Poor on {100}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Subconchoidal-uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, resinous" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.06-3.08" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.628-1.639" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.648-1.664" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.657-1.671" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.029-0.032" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Visible: X=yellow, Y=pink, Z=pale pink-colorless" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Monoclinic 2/m prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Lyonsite", "title": "Wikipedia: Lyonsite" } ], "names": [ "Lyonsite" ], "chemicalFormula": "Cu$_{3}$Fe$^{+3}$$_{4}$(VO$_{4}$)$_{6}$", "properties": [ { "scalars": [ { "value": "Vanadate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "8.AB.40" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "10.29" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "17.2" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "4.91" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Black, creamy white in re\\xef\\xac\\x82ected light in polished section" } ], "name": "Color" }, { "scalars": [ { "value": "As euhedral flattened lath shaped crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Good on {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Dark gray" } ], "name": "Streak" }, { "scalars": [ { "value": "4.215" } ], "conditions": [ { "scalars": [ { "value": "calculated" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "Pmcn" } ], "name": "Space group" }, { "scalars": [ { "value": "Orthorhombic dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Barstowite", "title": "Wikipedia: Barstowite" } ], "names": [ "Barstowite" ], "chemicalFormula": "Pb$_{4}$[Cl$_{6}$CO$_{3}$].H$_{2}$O", "properties": [ { "scalars": [ { "value": "Halide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "03.DC.95" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "White-transparent" } ], "name": "Color" }, { "scalars": [ { "value": "monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Spherocobaltite", "title": "Wikipedia: Spherocobaltite" } ], "names": [ "Spherocobaltite" ], "chemicalFormula": "CoCO$_{3}$", "properties": [ { "scalars": [ { "value": "118.94" } ], "units": "g/mol", "name": "Molecular weight" }, { "scalars": [ { "value": "05.AB.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "4.65" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "14.95" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "6" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Pink-red, brown, grey, velvet-black" } ], "conditions": [ { "scalars": [ { "value": "surface alteration" } ], "name": "Note" } ], "name": "Color" }, { "scalars": [ { "value": "Encrustations-forms crust-like aggregates on matrix, crystals uncommon: rhombohedral-discoidal" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect rhomboidal cleavage" } ], "name": "Cleavage" }, { "scalars": [ { "value": "4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.600" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "1.885" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": ".285" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Dichroic: O=violet-red, E=rose-red" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Pink" } ], "name": "Streak" }, { "scalars": [ { "value": "4.13" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "$\\bar{3}$ 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "R $\\bar{3}$c" } ], "name": "Space group" }, { "scalars": [ { "value": "" } ], "name": "Symmetry" }, { "scalars": [ { "value": "Trigonal-hexagonal scalenohedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Holmquistite", "title": "Wikipedia: Holmquistite" } ], "names": [ "Holmquistite" ], "chemicalFormula": "$\\Box$${Li$_{2}$}${Mg$_{3}$Al$_{2}$}$(Si$_{8}$O$_{22}$)(OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Inosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.DD.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "66.1.2.9" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Gehlenite", "title": "Wikipedia: Gehlenite" } ], "names": [ "Gehlenite" ], "chemicalFormula": "Ca$_{2}$Al[AlSiO$_{7}$]", "properties": [ { "scalars": [ { "value": "Sorosilicates" } ], "name": "Category" }, { "scalars": [ { "value": "09.BB.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "yellow-brown, green-grey, colourless" } ], "name": "Color" }, { "scalars": [ { "value": "Tetragonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Distinct/good" } ], "name": "Cleavage" }, { "scalars": [ { "value": "5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "vitreous, greasy" } ], "name": "Luster" }, { "scalars": [ { "value": "0.010" } ], "name": "Birefringence" }, { "scalars": [ { "value": "white, grey-white" } ], "name": "Streak" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Alabandite", "title": "Wikipedia: Alabandite" } ], "names": [ "Alabandite" ], "chemicalFormula": "MnS", "properties": [ { "scalars": [ { "value": "Sulfide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.CD.10, II/C.15-30" } ], "conditions": [ { "scalars": [ { "value": "8 ed" } ], "name": "Note" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "2.8.1.4" } ], "name": "Dana classification" }, { "scalars": [ { "value": "5.2236" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "black, steelgray, brownish-black" } ], "name": "Color" }, { "scalars": [ { "value": "mostly massive or granular, cubic or octahedral crystals-1 cm" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Cubic hexoctahedral" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Lamellar {111}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {100}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Irregular, uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3.5-4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Sub-metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Green" } ], "name": "Streak" }, { "scalars": [ { "value": "4.053" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.70" } ], "name": "Refractive index (n)" }, { "scalars": [ { "value": "Cubic 4/m $\\bar{3}$ 2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Jerrygibbsite", "title": "Wikipedia: Jerrygibbsite" } ], "names": [ "Jerrygibbsite" ], "chemicalFormula": "(Mn,Zn)$_{9}$(SiO$_{4}$)$_{4}$(OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Nesosilicates" } ], "name": "Category" }, { "scalars": [ { "value": "09.AF.70" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "4.85" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "10.7" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "28.17" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Violet-pink, with a brownish tinge" } ], "name": "Color" }, { "scalars": [ { "value": "Interlocking anhedral crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Imperfect on {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "5.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.772" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.783" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.789" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.017" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Light pink" } ], "name": "Streak" }, { "scalars": [ { "value": "4.00" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Orthorhombic mm2 or 2/m 2/m 2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Pabstite", "title": "Wikipedia: Pabstite" } ], "names": [ "Pabstite" ], "chemicalFormula": "Ba(Sn,Ti)Si$_{3}$O$_{9}$", "properties": [ { "scalars": [ { "value": "Cyclosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.CA.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "59.01.01.03" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Colorless-white with a pink tinge" } ], "name": "Color" }, { "scalars": [ { "value": "Granular anhedral, rare as crystals showing a trigonal outline" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Hexagonal-Ditrigonal Dipyramidal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "4.03" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.685" } ], "name": "Refractive index (n$\\omega$)" }, { "scalars": [ { "value": "1.674" } ], "name": "Refractive index (n$\\epsilon$)" }, { "scalars": [ { "value": "0.011" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Bluish white under short-wave UV" } ], "name": "fluorescence" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Atheneite", "title": "Wikipedia: Atheneite" } ], "names": [ "Atheneite" ], "chemicalFormula": "(Pd,Hg)$_{3}$As", "properties": [ { "scalars": [ { "value": "Arsenide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.AC.05a" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "6.813" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "3.4892" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "3" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Gray-gray white, white with bluish tint in reflected light" } ], "name": "Color" }, { "scalars": [ { "value": "Irregular blebs, inclusions" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Hexagonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "10.2" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Very weak, in pale yellow-pale bluish gray" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "6/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 6/mmm" } ], "name": "Space group" }, { "scalars": [ { "value": "Hexagonal-dihexagonal dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Julgoldite", "title": "Wikipedia: Julgoldite" } ], "names": [ "Julgoldite" ], "chemicalFormula": "(Ca,Mn)$_{2}$(Fe$^{2+}$,Fe$^{3+}$,Mg)(Fe$^{3+}$,Al)$_{2}$(SiO$_{4}$)(Si$_{2}$O$_{7}$)(OH)$_{2}$(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Sorosilicates" } ], "name": "Category" }, { "scalars": [ { "value": "Black-greenish olive" } ], "name": "Color" }, { "scalars": [ { "value": "blades or prisms." } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic 2/m" } ], "name": "Crystal system" }, { "scalars": [ { "value": "09.BG.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "[100] Good" } ], "name": "Cleavage" }, { "scalars": [ { "value": "4.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "sub-metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "1.776" } ], "name": "Refractive index (n$\\alpha$)" }, { "scalars": [ { "value": "1.814" } ], "name": "Refractive index (n$\\beta$)" }, { "scalars": [ { "value": "1.836" } ], "name": "Refractive index (n$\\gamma$)" }, { "scalars": [ { "value": "0.0600" } ], "name": "Birefringence" }, { "scalars": [ { "value": "greenish olive" } ], "name": "Streak" }, { "scalars": [ { "value": "3.6" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "loses water" } ], "name": "Fusibility" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Santabarbaraite", "title": "Wikipedia: Santabarbaraite" } ], "names": [ "Santabarbaraite" ], "chemicalFormula": "Fe$_{3}$$^{+3}$(PO$_{4}$)$_{2}$(OH)$_{3}$.5H$_{2}$O", "properties": [ { "scalars": [ { "value": "Phosphate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.CE.80" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Brown/light brown" } ], "name": "Color" }, { "scalars": [ { "value": "Elongated or flattened prisms" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Amorphous" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None" } ], "name": "Twinning" }, { "scalars": [ { "value": "None, parting along {010} of replaced phase" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Not determined" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous/ greasy" } ], "name": "Luster" }, { "scalars": [ { "value": "1.659" } ], "name": "Refractive index (n)" }, { "scalars": [ { "value": "yellow-umber" } ], "name": "Streak" }, { "scalars": [ { "value": "2.24" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Pseudomorphism" } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Schreyerite", "title": "Wikipedia: Schreyerite" } ], "names": [ "Schreyerite" ], "chemicalFormula": "V$_{2}$Ti$_{3}$O$_{9}$", "properties": [ { "scalars": [ { "value": "Oxide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "04.CB.35" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "7.06" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.01" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "18.74" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "119.4" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Reddish brown, gray in re\\xef\\xac\\x82ected light" } ], "name": "Color" }, { "scalars": [ { "value": "As lamellae and microscopic grains, exsolved within rutile crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Polysynthetic, universal" } ], "name": "Twinning" }, { "scalars": [ { "value": "7" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "2.700" } ], "name": "Refractive index (n)" }, { "scalars": [ { "value": "Weak, yellow-brown-reddish brown" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "C 2/c" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Iddingsite", "title": "Wikipedia: Iddingsite" } ], "names": [ "Iddingsite" ], "chemicalFormula": "MgFe$_{2}$Si$_{3}$O$_{10}$.4(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Silicate mineral" } ], "conditions": [ { "scalars": [ { "value": "not a proper mineral" } ], "name": "Note" } ], "name": "Category" }, { "scalars": [ { "value": "Brown" } ], "name": "Color" }, { "scalars": [ { "value": "Foliated" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "None" } ], "name": "Streak" }, { "scalars": [ { "value": "2.5-2.8" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Tschermakite", "title": "Wikipedia: Tschermakite" } ], "names": [ "Tschermakite" ], "chemicalFormula": "$\\Box$$Ca$_{2}$(Mg$_{3}$Al$_{2}$)(Si$_{6}$Al$_{2}$)O$_{22}$(OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Silicate mineral amphibole" } ], "name": "Category" }, { "scalars": [ { "value": "09.DE." } ], "name": "Strunz classification" }, { "scalars": [ { "value": "9.762(6)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "17.994(12)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.325(6)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "105.10(8)" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Medium-dark green-green-black-black, brown" } ], "conditions": [ { "scalars": [ { "value": "rare" } ], "name": "Note" } ], "name": "Color" }, { "scalars": [ { "value": "As prismatic crystals or as reaction rims on other minerals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Simple or multiple twinning parallel-{100}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {110} Parting on {100}{001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "Pale grey-green" } ], "name": "Streak" }, { "scalars": [ { "value": "3.15" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.623-1.660" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.630-1.680" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.638-1.688" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.015-0.028" } ], "name": "Birefringence" }, { 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"Subconchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2.5-3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Black" } ], "name": "Streak" }, { "scalars": [ { "value": "6.58-6.74" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Mosesite", "title": "Wikipedia: Mosesite" } ], "names": [ "Mosesite" ], "chemicalFormula": "(Hg$_{2}$N)(Cl, SO$_{4}$, MoO$_{4}$).H$_{2}$O", "properties": [ { "scalars": [ { "value": "Halide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "03.DD.30" } ], "name": "Strunz classification" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Spurrite", "title": "Wikipedia: Spurrite" } ], "names": [ "Spurrite" ], "chemicalFormula": "Ca$_{5}$(SiO$_{4}$)$_{2}$CO$_{3}$", "properties": [ { "scalars": [ { "value": "Nesosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.AH.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Gray, gray white-lilac gray" } ], "name": "Color" }, { "scalars": [ { "value": "Massive-granular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "monoclinic 2/m" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Polysynthetic twins on [001] and [101]" } ], "name": "Twinning" }, { "scalars": [ { "value": "Distinct on [100]" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven-splintery" } ], "name": "Fracture" }, { "scalars": [ { "value": "5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "vitreous-resinous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.640-1.641" } ], "name": "Refractive index (n$\\alpha$)" }, { "scalars": [ { "value": "1.674-1.676" } ], "name": "Refractive index (n$\\beta$)" }, { "scalars": [ { "value": "1.679-1.681" } ], "name": "Refractive index (n$\\gamma$)" }, { "scalars": [ { "value": "0.039-0.040" } ], "name": "Birefringence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Green cathodoluminescence" } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Zussmanite", "title": "Wikipedia: Zussmanite" } ], "names": [ "Zussmanite" ], "chemicalFormula": "K(Fe$^{2+}$,Mg,Mn)$_{13}$[AlSi$_{17}$O$_{42}$](OH)$_{14}$", "properties": [ { "scalars": [ { "value": "Phyllosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.EG.35" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "11.66" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "28.69" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "3" } ], "name": "Unit cell (Z)" 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"name": "H-M symbol" }, { "scalars": [ { "value": "R 3" } ], "name": "Space group" }, { "scalars": [ { "value": "Trigonal pyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Talnakhite", "title": "Wikipedia: Talnakhite" } ], "names": [ "Talnakhite" ], "chemicalFormula": "Cu$_{9}$(Fe, Ni)$_{8}$S$_{16}$", "properties": [ { "scalars": [ { "value": "Sulfide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.CB.10b" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Brass-yellow, tarnishes-pink or brown tints, then iridescent" } ], "name": "Color" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Russellite", "title": "Wikipedia: Russellite" } ], "names": [ "Russellite" ], "chemicalFormula": "Bi$_{2}$WO$_{6}$", "properties": [ { "scalars": [ { "value": "Tungstate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "04.DE.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.43" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "16.43" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.45" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Yellow-green, yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Fine-grained, compact, massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "3.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "2.17-2.51" } ], "name": "Refractive index" }, { "scalars": [ { "value": "7.33-7.37" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Orthorhombic mm2" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Arthurite", "title": "Wikipedia: Arthurite" } ], "names": [ "Arthurite" ], "chemicalFormula": "CuFe$_{2}$$^{3+}$[(OH,O)(AsO$_{4}$,PO$_{4}$,SO$_{4}$)]$_{2}$.4H$_{2}$O", "properties": [ { "scalars": [ { "value": "Arsenate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.DC.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Apple-green-bluish-green" } ], "name": "Color" }, { "scalars": [ { "value": "Acicular, Prismatic, Spherical" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "3-4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "X=colorless-pale green, Y=gray-green, Z=olive-green" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Z>Y>X. $\\alpha$=1.736 $\\beta$=1.767 $\\gamma$=1.796" } ], "name": "absorption" }, { "scalars": [ { "value": "not reported" } ], "name": "Streak" }, { "scalars": [ { "value": "D=~3.2 D=3.29" } ], "conditions": [ { "scalars": [ { "value": "meas." }, { "value": "calc." } ], "name": "Note" } ], "name": "Density" }, { "scalars": [ { "value": "Space Group=P21/c. a=10.189(2) b=9.649(2) c=5.598(1) $\\beta$=92.16(2)$^{\\circ}$ Z=2" } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Jordanite", "title": "Wikipedia: Jordanite" } ], "names": [ "Jordanite" ], "chemicalFormula": "Pb$_{14}$(As,Sb)$_{6}$S$_{23}$", "properties": [ { "scalars": [ { "value": "Sulfosalt minerals" } ], "name": "Category" }, { "scalars": [ { "value": "02.JB.30a" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Lead-grey" } ], "name": "Color" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect" } ], "name": "Cleavage" }, { "scalars": [ { 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"Monoclinic 2/m" } ], "name": "Crystal system" }, { "scalars": [ { "value": "On [100] uncommon" } ], "name": "Twinning" }, { "scalars": [ { "value": "[001] good, [100] distinct" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven-splintery" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "6-6.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.725-1.756" } ], "name": "Refractive index (n$\\alpha$)" }, { "scalars": [ { "value": "1.730-1.789" } ], "name": "Refractive index (n$\\beta$)" }, { "scalars": [ { "value": "1.750-1.832" } ], "name": "Refractive index (n$\\gamma$)" }, { "scalars": [ { "value": "0.025-0.076" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Visible" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Red" } ], "name": "Streak" }, { "scalars": [ { "value": "3.46-3.54" } ], "name": "Density" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Botallackite", "title": "Wikipedia: Botallackite" } ], "names": [ "Botallackite" ], "chemicalFormula": "Cu$_{2}$(OH)$_{3}$Cl", "properties": [ { "scalars": [ { "value": "Halide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "03.DA.10b" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.717" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "6.126" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.636" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "93.07" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Shades of green" } ], "name": "Color" }, { "scalars": [ { "value": "Platy interlaced crystal crusts" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{100} Perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Soft" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "1.775" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.800" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.846" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.071" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Weak-blue green shades" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "3.6" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 2$_{1}$/m" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Vishnevite", "title": "Wikipedia: Vishnevite" } ], "names": [ "Vishnevite" ], "chemicalFormula": "(Na,Ca,K)$_{6}$(Si,Al)$_{12}$O$_{24}$[(SO$_{4}$),(CO$_{3}$),Cl$_{2}$]$_{2-4}$.nH$_{2}$O", "properties": [ { "scalars": [ { "value": "Tec-silicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.FB.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "12.7228(3)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.198(3)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "Colourless, light blue, orange-yellow, white" } ], "name": "Color" }, { "scalars": [ { "value": "Hexagonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, pearly" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "1.490-1.507" } ], "name": "Refractive index 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}, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Indite", "title": "Wikipedia: Indite" } ], "names": [ "Indite" ], "chemicalFormula": "FeIn$_{2}$S$_{4}$", "properties": [ { "scalars": [ { "value": "Sulfide mineral, Thiospinel group, Spinel structural group" } ], "name": "Category" }, { "scalars": [ { "value": "02.DA.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "02.10.01.12" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Black" } ], "name": "Color" }, { "scalars": [ { "value": "Massive, granular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Cubic hexoctahedral (4/m $\\bar{3}$ 2/m)" } ], "name": "Crystal system" }, { "scalars": [ { "value": "5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "4.67" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Hoelite", "title": "Wikipedia: Hoelite" } ], "names": [ "Hoelite" ], "chemicalFormula": "C$_{14}$H$_{8}$O$_{2}$", "properties": [ { "scalars": [ { "value": "Organic minerals" } ], "name": "Category" }, { "scalars": [ { "value": "10.CA.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "50.4.2.1" } ], "name": "Dana classification" }, { "scalars": [ { "value": "15.81" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "3.967" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "7.876" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "102.67" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Yellow, yellowish green" } ], "name": "Color" }, { "scalars": [ { "value": "Acicular clusters" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic-pseudo-orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Good" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Light yellow" } ], "name": "Streak" }, { "scalars": [ { "value": "1.42" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "n$_{\\alpha}$$\\in$1.75" } ], "name": "Refractive index" }, { "scalars": [ { "value": "n$_{\\beta}$$\\in$1.75" } ], "name": "Refractive index" }, { "scalars": [ { "value": "n$_{\\gamma}$$\\in$2.0" } ], "name": "Refractive index" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 2$_{1}$/a" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Sborgite", "title": "Wikipedia: Sborgite" } ], "names": [ "Sborgite" ], "chemicalFormula": "Na[B$_{5}$O$_{6}$(OH)$_{4}$].3H$_{2}$O", "properties": [ { "scalars": [ { "value": "Nesoborates" } ], "name": "Category" }, { "scalars": [ { "value": "06.EA.05" } ], "name": "Strunz classification" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Svanbergite", "title": "Wikipedia: Svanbergite" } ], "names": [ "Svanbergite" ], "chemicalFormula": "SrAl$_{3}$(PO$_{4}$)(SO$_{4}$)(OH)$_{6}$", "properties": [ { "scalars": [ { "value": "Phosphate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.BL.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "6.970-6.992" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "16.567-16.75" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "3" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless, cream-yellow, rose, reddish brown" } ], "name": "Color" }, { "scalars": [ { "value": "Rhombohedral crystals , granular, massive" } ], "conditions": [ { "scalars": [ { "value": "-pseudocubic" } ], "name": "Note" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Distinct on {0001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-adamantine" } ], "name": "Luster" }, { "scalars": [ { "value": "3.22" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.631-1.635" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.646-1.649" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.0140-0.0150" } ], "name": "Birefringence" }, { "scalars": [ { "value": "$\\bar{3}$2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "R $\\bar{3}$m" } ], "name": "Space group" }, { "scalars": [ { "value": "Trigonal hexagonal scalenohedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Okenite", "title": "Wikipedia: Okenite" } ], "names": [ "Okenite" ], "chemicalFormula": "CaSi$_{2}$O$_{5}$.2H$_{2}$O", "properties": [ { "scalars": [ { "value": "Phyllosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.EA.40" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "9.69" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "7.28" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "22.02" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "92.7" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\alpha$)" }, { "scalars": [ { "value": "100.1" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "110.9" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\gamma$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "White, may show slightly yellow or blue tint" } ], "name": "Color" }, { "scalars": [ { "value": "Bladed crystals, typically fibrous, clusters of curved crystals and radial balls" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Triclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Lamellar" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Elastic" } ], "name": "Tenacity" }, { "scalars": [ { "value": "4.5-5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, pearly" } ], "name": "Luster" }, { "scalars": [ { "value": "2.28-2.33" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.512-1.532" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.514-1.535" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.515-1.542" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.003-0.010" } ], "name": "Birefringence" }, { "scalars": [ { "value": "P$\\bar{1}$ or P1" } ], "name": "Space group" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Osumilite", "title": "Wikipedia: Osumilite" } ], "names": [ "Osumilite" ], "chemicalFormula": "(K,Na)(Fe,Mg)$_{2}$(Al,Fe)$_{3}$(Si,Al)$_{12}$O$_{30}$.H$_{2}$O", "properties": [ { "scalars": [ { "value": "Cyclosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "63.02.01a.06" } ], "name": "Dana classification" }, { "scalars": [ { "value": "09.CM.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "10.15" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "14.25" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Black, dark blue, dark brown, pink, gray" } ], "name": "Color" }, { "scalars": [ { "value": "Crystals tabular-prismatic also anhedral and massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Hexagonal, 6/m 2/m 2/m." } ], "name": "Crystal system" }, { "scalars": [ { "value": "Rarely" } ], "name": "Twinning" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Subconchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.545-1.547" } ], "name": "Refractive index (w)" }, { "scalars": [ { "value": "1.549-1.551" } ], "name": "Refractive index (e)" }, { "scalars": [ { "value": "0.004" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Strong" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Blue-gray" } ], "name": "Streak" }, { "scalars": [ { "value": "2.62-2.64" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Hexagonal 6/m 2/m 2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Nadorite", "title": "Wikipedia: Nadorite" } ], "names": [ "Nadorite" ], "chemicalFormula": "PbSbO$_{2}$Cl", "properties": [ { "scalars": [ { "value": "Halide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "03.DC.30" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Brown, brownish-yellow, yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "On {101}, nearly perpendicular , common" } ], "conditions": [ { "scalars": [ { "value": "91$^{\\circ}$45'" } ], "name": "Note" } ], "name": "Twinning" }, { "scalars": [ { "value": "On {010}, perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "3.5-4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine, Resinous" } ], "name": "Luster" }, { "scalars": [ { "value": "2.300" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "2.340-2.350" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "2.360-2.400" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.060-0.100" } ], "name": "Birefringence" }, { "scalars": [ { "value": "White, yellow-yellowish white" } ], "name": "Streak" }, { "scalars": [ { "value": "7" } ], "name": "Density" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Ammolite", "title": "Wikipedia: Ammolite" } ], "names": [ "Ammolite" ], "chemicalFormula": "CaCO$_{3}$ aragonitepolymorph, with minor amounts of calcite, pyrite, silica, and other impurities", "properties": [ { "scalars": [ { "value": "fossilized, mineralized Ammonite shell" } ], "name": "Category" }, { "scalars": [ { "value": "Gray-brown, with primarily red-green iridescence." } ], "name": "Color" }, { "scalars": [ { "value": "no true cleavage" } ], "name": "Cleavage" }, { "scalars": [ { "value": "uneven-granular" } ], "name": "Fracture" }, { "scalars": [ { "value": "4.5-5.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "greasy-dull" } ], "name": "Luster" }, { "scalars": [ { "value": "vitreous" } ], "name": "Polish" }, { "scalars": [ { "value": "usually" } ], "name": "Refractive index" }, { "scalars": [ { "value": "1.52-1.68" } ], "name": "Refractive index" }, { "scalars": [ { "value": "0.135-0.145" } ], "name": "Birefringence" }, { "scalars": [ { "value": "none" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "variable" } ], "name": "fluorescence" }, { "scalars": [ { "value": "usually about 2.70" } ], "conditions": [ { "scalars": [ { "value": "varies with mineral content" } ], "name": "Note" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Carletonite", "title": "Wikipedia: Carletonite" } ], "names": [ "Carletonite" ], "chemicalFormula": "KNa$_{4}$Ca$_{4}$(CO$_{3}$)$_{4}$Si$_{8}$O$_{18}$(F,OH).(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Phyllosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.EB.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "13.17" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "16.69" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colourless, light blue, dark blue, or pink" } ], "name": "Color" }, { "scalars": [ { "value": "Prismatic crystals, massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Tetragonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {001}, good on {110}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "4-4.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.45" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.521" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.517" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.004" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Weak, O=pale blue, E=pale pinkish brown" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "4/m 2/m 2/m" } ], "name": "H-M symbol" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Cervantite", "title": "Wikipedia: Cervantite" } ], "names": [ "Cervantite" ], "chemicalFormula": "Sb$^{3+}$Sb$^{5+}$O$_{4}$", "properties": [ { "scalars": [ { "value": "Oxide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "04.DE.30" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.43" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "4.81" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "11.76" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Yellow-nearly white" } ], "name": "Color" }, { "scalars": [ { "value": "Microscopic acicular crystals, massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Excellent on {001}, distinct on {100}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "4-5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Greasy, pearly, earthy" } ], "name": "Luster" }, { "scalars": [ { "value": "Pale yellow-white" } ], "name": "Streak" }, { "scalars": [ { "value": "6.5" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.000" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "2.100" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.100" } ], "name": "Birefringence" }, { "scalars": [ { "value": "mm2" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "Pbn21" } ], "name": "Space group" }, { "scalars": [ { "value": "Orthorhombic pyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Akhtenskite", "title": "Wikipedia: Akhtenskite" } ], "names": [ "Akhtenskite" ], "chemicalFormula": "MnO$_{4}$", "properties": [ { "scalars": [ { "value": "Oxide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "4.DB.15b" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "2.84" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "4.6" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "1" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Light gray-black" } ], "name": "Color" }, { "scalars": [ { "value": "Flaky polycrystalline aggregates" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Hexagonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Distinct on {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Black" } ], "name": "Streak" }, { "scalars": [ { "value": "4.78" } ], "conditions": [ { "scalars": [ { "value": "calculated" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "6/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P63/mmc" } ], "name": "Space group" }, { "scalars": [ { "value": "Hexagonal dihexagonal dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Anandite", "title": "Wikipedia: Anandite" } ], "names": [ "Anandite" ], "chemicalFormula": "(Ba,K)(Fe$^{2+}$,Mg)$_{3}$(Si,Al,Fe)$_{4}$O$_{10}$(S,OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Phyllosilicates" } ], "name": "Category" }, { "scalars": [ { "value": "09.EC.35" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.412(5)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "9.434(5)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "19.953(10)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "95" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Black" } ], "name": "Color" }, { "scalars": [ { "value": "Massive, prismatic crystals poorly formed produce hexagonal outline cleavage fragments" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Flexible fragments" } ], "name": "Fracture" }, { "scalars": [ { "value": "3-4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "Grey white" } ], "name": "Streak" }, { "scalars": [ { "value": "3.94" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.855" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.880" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "Y=green, Z=brown" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "C 2/m" } ], "name": "Monoclinic prismatic H-M Symbol (2/m) Space Group" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Akimotoite", "title": "Wikipedia: Akimotoite" } ], "names": [ "Akimotoite" ], "chemicalFormula": "(Mg,Fe)SiO$_{3}$", "properties": [ { "scalars": [ { "value": "Oxide minerals, Ilmenite group" } ], "name": "Category" }, { "scalars": [ { "value": "04.CB.05 , 09.DA.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "4.7284" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "13.5591" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "6" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless" } ], "name": "Color" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "perfect" } ], "conditions": [ { "scalars": [ { "value": "0001" } ], "name": "Note" } ], "name": "Cleavage" }, { "scalars": [ { "value": "vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "white or colorless" } ], "name": "Streak" }, { "scalars": [ { "value": "3.81" } ], "conditions": [ { "scalars": [ { "value": "calculated" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "$\\bar{3}$" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "R$\\bar{3}$" } ], "name": "Space group" }, { "scalars": [ { "value": "Trigonal rhombohedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Betafite", "title": "Wikipedia: Betafite" } ], "names": [ "Betafite" ], "chemicalFormula": "(Ca,U)$_{2}$(Ti,Nb,Ta)$_{2}$O$_{6}$(OH)", "properties": [ { "scalars": [ { "value": "Oxide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "04.DH.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "Radioactive" } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Gratonite", "title": "Wikipedia: Gratonite" } ], "names": [ "Gratonite" ], "chemicalFormula": "Pb$_{9}$As$_{4}$S$_{15}$", "properties": [ { "scalars": [ { "value": "Sulfosalt minerals" } ], "name": "Category" }, { "scalars": [ { "value": "02.JB.55" } ], "name": "Strunz classification" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Kurnakovite", "title": "Wikipedia: Kurnakovite" } ], "names": [ "Kurnakovite" ], "chemicalFormula": "MgB$_{3}$O$_{3}$(OH)$_{5}$.5H$_{2}$O", "properties": [ { "scalars": [ { "value": "Nesoborates" } ], "name": "Category" }, { "scalars": [ { "value": "06.CA.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "8.3479(1)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "10.6068(1)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.4447(1)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "98.846" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\alpha$)" }, { "scalars": [ { "value": "108.981" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "105.581" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\gamma$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "White, colorless in transmitted light" } ], "name": "Color" }, { "scalars": [ { "value": "Aggregates of prismatic crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Triclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Twinning uncommon" } ], "name": "Twinning" }, { "scalars": [ { "value": "Poor-indistinct on {010}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "2.5-3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "1.847-1.852" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.488-1.491" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.508-1.510" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.515-1.525" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.027-0.034" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Triclinic $\\bar{1}$ pinacoidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Linnaeite", "title": "Wikipedia: Linnaeite" } ], "names": [ "Linnaeite" ], "chemicalFormula": "Co$^{+2}$Co$^{+3}$$_{2}$S$_{4}$", "properties": [ { "scalars": [ { "value": "Sulfide mineral, Thiospinel group, Spinel structural group" } ], "name": "Category" }, { "scalars": [ { "value": "02.DA.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "9.43" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Steel gray-gray violet" } ], "name": "Color" }, { "scalars": [ { "value": "As octahedral crystals, massive, granular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Cubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "On {111}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Imperfect on {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Subconchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "4.5-5.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Grayish-black" } ], "name": "Streak" }, { "scalars": [ { "value": "4.8-5.8" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "4/m$\\bar{3}$2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "F d3m" } ], "name": "Space group" }, { "scalars": [ { "value": "Isometric hexoctahedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Meyerhofferite", "title": "Wikipedia: Meyerhofferite" } ], "names": [ "Meyerhofferite" ], "chemicalFormula": "Ca$_{2}$B$_{6}$O$_{6}$(OH)$_{10}$.2(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Nesoborates" } ], "name": "Category" }, { "scalars": [ { "value": "06.CA.30" } ], "name": "Strunz classification" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Northupite", "title": "Wikipedia: Northupite" } ], "names": [ "Northupite" ], "chemicalFormula": "Na$_{3}$Mg(CO$_{3}$)$_{2}$Cl", "properties": [ { "scalars": [ { "value": "Carbonate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "05.BF.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "13.98" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "16" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Octahedral crystals, globular, massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Isometric" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3.5-4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "2.380-2.407" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.5144" } ], "name": "Refractive index (n)" }, { "scalars": [ { "value": "Readily soluble in dilute acids with effervescence. Decomposed by hot water with the separation of magnesium carbonate." } ], "name": "Solubility" }, { "scalars": [ { "value": "2/m$\\bar{3}$" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "F d3" } ], "name": "Space group" }, { "scalars": [ { "value": "Isometric diploidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Saleeite", "title": "Wikipedia: Saleeite" } ], "names": [ "Saleeite" ], "chemicalFormula": "Mg(UO$_{2}$)$_{2}$(PO$_{4}$)$_{2}$.10(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Phosphate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.EB.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "6.951(3)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "19.947(8)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "9.896(4)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "135.17(2)" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Lemon-yellow, straw-yellow, greenish yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Crystals are square plates, composite, flattened on {001}, with {001}, {100}, {120}, {012} ,-2.5 cm, commonly in subparallel lamellar aggregates." } ], "conditions": [ { "scalars": [ { "value": "pseudotetragonal indices" } ], "name": "Note" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "On {001}, perfect, on {010}, {110}, indistinct" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Adamantine-waxy" } ], "name": "Luster" }, { "scalars": [ { "value": "3.27" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.554-1.559" } ], "name": "Refractive index (n$\\alpha$)" }, { "scalars": [ { "value": "1.570-1.582" } ], "name": "Refractive index (n$\\beta$)" }, { "scalars": [ { "value": "1.571-1.585" } ], "name": "Refractive index (n$\\gamma$)" }, { "scalars": [ { "value": "0.027" } ], "name": "Birefringence" }, { "scalars": [ { "value": "X=colorless, Z=pale greenish yellow" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "fluoresces bright lemon-yellow under LW UV, pale yellow under SW UV" } ], "name": "fluorescence" }, { "scalars": [ { "value": "Radioactive" } ], "name": "Other" }, { "scalars": [ { "value": "Monoclinic 2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Searlesite", "title": "Wikipedia: Searlesite" } ], "names": [ "Searlesite" ], "chemicalFormula": "NaBSi$_{2}$O$_{5}$(OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Phyllosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.EF.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "7.98" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "7.06" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "4.9" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "White, light brown" } ], "name": "Color" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "1-2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.516" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.531" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.535" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.019" } ], "name": "Birefringence" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Shortite", "title": "Wikipedia: Shortite" } ], "names": [ "Shortite" ], "chemicalFormula": "Na$_{2}$Ca$_{2}$(CO$_{3}$)$_{3}$", "properties": [ { "scalars": [ { "value": "Carbonate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "05.AC.25" } ], "name": "Strunz classification" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Ferroselite", "title": "Wikipedia: Ferroselite" } ], "names": [ "Ferroselite" ], "chemicalFormula": "FeSe$_{2}$", "properties": [ { "scalars": [ { "value": "Selenide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.EB.10a" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Steel-gray-tin-white with a rose tint, brass yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Acicular prismatic" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic/Cubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Stellate and cruciform twins common" } ], "name": "Twinning" }, { "scalars": [ { "value": "6-6.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Opaque" } ], "name": "Refractive index" }, { "scalars": [ { "value": "Distinct" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Black" } ], "name": "Streak" }, { "scalars": [ { "value": "7.20" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "insoluble in water" } ], "name": "Solubility" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Cahnite", "title": "Wikipedia: Cahnite" } ], "names": [ "Cahnite" ], "chemicalFormula": "Ca$_{2}$B[AsO$_{4}$](OH)$_{4}$", "properties": [ { "scalars": [ { "value": "Borate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "06.AC.70" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Colourless-white" } ], "name": "Color" }, { "scalars": [ { "value": "Perfect, On {110}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "3.156" } ], "conditions": [ { "scalars": [ { "value": "g/cm$^{3}$" } ], "name": "Note" } ], "name": "Density" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Xanthoxenite", "title": "Wikipedia: Xanthoxenite" } ], "names": [ "Xanthoxenite" ], "chemicalFormula": "Ca$_{4}$Fe$^{3+}$$_{2}$(PO$_{4}$)$_{4}$(OH)$_{2}$.3H$_{2}$O", "properties": [ { "scalars": [ { "value": "Phosphate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.DH.40" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "6.7" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8.85" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.54" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "92.1" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\alpha$)" }, { "scalars": [ { "value": "110.1" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "93.2" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\gamma$)" }, { "scalars": [ { "value": "1" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "739.95" } ], "units": "g/mol", "name": "Molecular weight" }, { "scalars": [ { "value": "Pale-brownish yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Occurs as platy crystals and as lamellar aggregates and crusts" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Triclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect {010}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Earthy" } ], "conditions": [ { "scalars": [ { "value": "dull" } ], "name": "Note" } ], "name": "Luster" }, { "scalars": [ { "value": "1.704" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.715" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.724" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.97" }, { "value": "3.38" } ], "conditions": [ { "scalars": [ { "value": "measured" }, { "value": "calculated" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Triclinic $\\bar{1}$" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Xanthiosite", "title": "Wikipedia: Xanthiosite" } ], "names": [ "Xanthiosite" ], "chemicalFormula": "Ni$_{3}$(AsO$_{4}$)$_{2}$", "properties": [ { "scalars": [ { "value": "Arsenate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "453.91" } ], "units": "g/mol", "name": "Molecular weight" }, { "scalars": [ { "value": "08.AB.25" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Golden yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "5.37-5.47" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Xocomecatlite", "title": "Wikipedia: Xocomecatlite" } ], "names": [ "Xocomecatlite" ], "chemicalFormula": "Cu$_{3}$(TeO$_{4}$)(OH)$_{4}$", "properties": [ { "scalars": [ { "value": "Tellurate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "450.26" } ], "units": "g/mol", "name": "Molecular weight" }, { "scalars": [ { "value": "07.BB.50" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "12.14" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "14.31" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "11.66" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "12" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Green, emerald green" } ], "name": "Color" }, { "scalars": [ { "value": "Aggregates of radial-spherulitic or botryoidal acicular crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "1.775" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.900" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.920" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.145" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Rich bluish greens" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "light green" } ], "name": "Streak" }, { "scalars": [ { "value": "4.65" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Brownleeite", "title": "Wikipedia: Brownleeite" } ], "names": [ "Brownleeite" ], "chemicalFormula": "MnSi", "properties": [ { "scalars": [ { "value": "Native element class, Fersilicite group" } ], "name": "Category" }, { "scalars": [ { "value": "01.XX.00" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "01.01.23.07" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Cubic grain in microscopic dust particle" } ], "conditions": [ { "scalars": [ { "value": "<2.5 $\\mu$m" } ], "name": "Note" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Isometric-tetartoidal H-M Symbol (2 3) Space Group: P 2$_{1}$3" } ], "name": "Crystal system" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Moschellandsbergite", "title": "Wikipedia: Moschellandsbergite" } ], "names": [ "Moschellandsbergite" ], "chemicalFormula": "silver amalgam, Ag$_{2}$Hg$_{3}$", "properties": [ { "scalars": [ { "value": "Metals and intermetallic alloys" } ], "name": "Category" }, { "scalars": [ { "value": "01.AD.15d" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "10.04" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "10" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "white, tarnishes grey" } ], "name": "Color" }, { "scalars": [ { "value": "brittle" } ], "name": "Cleavage" }, { "scalars": [ { "value": "3.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "13.48" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Isometric" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Stilpnomelane", "title": "Wikipedia: Stilpnomelane" } ], "names": [ "Stilpnomelane" ], "chemicalFormula": "K(Fe$^{2+}$,Mg,Fe$^{3+}$)$_{8}$", "properties": [ { "scalars": [ { "value": "Phyllosilicates, Smectite group" } ], "name": "Category" }, { "scalars": [ { "value": "09.EG.40" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "21.72" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "21.72" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "17.4" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "Black, greenish black, yellowish bronze, greenish bronze" } ], "name": "Color" }, { "scalars": [ { "value": "Platey, scaly and fibrous with comb structures, radiating groups" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Triclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {001}, imperfect on {010}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3-4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-dull" } ], "name": "Luster" }, { "scalars": [ { "value": "Gray white" } ], "name": "Streak" }, { "scalars": [ { "value": "2.77-2.96" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.543-1.634" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.576-1.745" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.576-1.745" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.033-0.111" } ], "name": "Birefringence" }, { "scalars": [ { "value": "X: bright golden yellow-pale yellow" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "$\\bar{1}$" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P$\\bar{1}$" } ], "name": "Space group" }, { "scalars": [ { "value": "Triclinic pinacoidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Cabalzarite", "title": "Wikipedia: Cabalzarite" } ], "names": [ "Cabalzarite" ], "chemicalFormula": "Ca(Mg,Al,Fe$^{3+}$)$_{2}$[AsO$_{4}$]$_{2}$.2(H$_{2}$O,OH)", "properties": [ { "scalars": [ { "value": "Arsenate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.CG.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "8.925" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "6.143" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "7.352" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "115.25" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Light brown, brownish pink, orange brown" } ], "name": "Color" }, { "scalars": [ { "value": "Aggregates and clusters, granular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Irregular" } ], "name": "Fracture" }, { "scalars": [ { "value": "5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.700" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.760" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.060" } ], "name": "Birefringence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.89" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "C 2/m" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Cacoxenite", "title": "Wikipedia: Cacoxenite" } ], "names": [ "Cacoxenite" ], "chemicalFormula": "Fe$^{3+}$$_{24}$Al(PO$_{4}$)$_{17}$O$_{6}$(OH)$_{12}$.17(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Phosphate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "27.559(1)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "10.55" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "08.DC.40" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Yellow-brownish yellow, reddish orange, golden yellow, deep orange, green, yellow in transmitted light" } ], "name": "Color" }, { "scalars": [ { "value": "Acicular, radial, stellate" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Hexagonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "3-4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Silky" } ], "name": "Luster" }, { "scalars": [ { "value": "1.575-1.585" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.635-1.656" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.060" } ], "name": "Birefringence" }, { "scalars": [ { "value": "visible: O=Pale yellow E=Canary yellow-yellow orange" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.2-2.6" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "6/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P63/m" } ], "name": "Space group" }, { "scalars": [ { "value": "Hexagonal dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Cadmoindite", "title": "Wikipedia: Cadmoindite" } ], "names": [ "Cadmoindite" ], "chemicalFormula": "CdIn$_{2}$S$_{4}$", "properties": [ { "scalars": [ { "value": "Sulfide mineral, Thiospinel group, Spinel structural group" } ], "name": "Category" }, { "scalars": [ { "value": "02.DA.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "10.81" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "470.32" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "Black-dark brown" } ], "name": "Color" }, { "scalars": [ { "value": "Microscopic octahedral crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Cubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Adamantine" } ], "name": "Luster" }, { "scalars": [ { "value": "d3m" } ], "name": "Space group" }, { "scalars": [ { "value": "Isometric hexoctahedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Cadwaladerite", "title": "Wikipedia: Cadwaladerite" } ], "names": [ "Cadwaladerite" ], "chemicalFormula": "Al(OH)Cl$_{2}$.4(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Halide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "03.BD.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "168.51" } ], "units": "gm", "name": "Molecular weight" }, { "scalars": [ { "value": "Lemon yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.513" } ], "name": "Refractive index (n)" }, { "scalars": [ { "value": "variable" } ], "name": "Refractive index" }, { "scalars": [ { "value": "1.66" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "deliquescent" } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Cafarsite", "title": "Wikipedia: Cafarsite" } ], "names": [ "Cafarsite" ], "chemicalFormula": "Ca$_{8}$(Ti,Fe$^{2+}$,Fe$^{3+}$,Mn)$_{6-7}$(AsO$_{3}$)$_{12}$.4H$_{2}$O", "properties": [ { "scalars": [ { "value": "Arsenites" } ], "name": "Category" }, { "scalars": [ { "value": "2230.31" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "04.JC.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "15.984" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Dark brown" } ], "name": "Color" }, { "scalars": [ { "value": "Cubic/octahedral crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Isometric" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "5.5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "sub-metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "2.2" } ], "name": "Refractive index (n)" }, { "scalars": [ { "value": "Yellow brown" } ], "name": "Streak" }, { "scalars": [ { "value": "3.9" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2/m 3" } ], "name": "H-M symbol" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Calciborite", "title": "Wikipedia: Calciborite" } ], "names": [ "Calciborite" ], "chemicalFormula": "CaB$_{2}$O$_{4}$", "properties": [ { "scalars": [ { "value": "Inoborates" } ], "name": "Category" }, { "scalars": [ { "value": "06.BC.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "8.38" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "13.82" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.00" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "125.70" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "White" } ], "name": "Color" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "none" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "3.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.595" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.654" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.670" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.075" } ], "name": "Birefringence" }, { "scalars": [ { "value": "white" } ], "name": "Streak" }, { "scalars": [ { "value": "2.878" } ], "conditions": [ { "scalars": [ { "value": "g/cm$^3$" } ], "name": "Note" } ], "name": "Density" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Faujasite", "title": "Wikipedia: Faujasite" } ], "names": [ "Faujasite" ], "chemicalFormula": "(Na$_{2}$,Ca,Mg)$_{3.5}$[Al$_{7}$Si$_{17}$O$_{48}$].32(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Zeolite" } ], "name": "Category" }, { "scalars": [ { "value": "09.GD.30" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "24.638-24.65" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "32" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless, white" } ], "name": "Color" }, { "scalars": [ { "value": "Octahedral or rarely trisoctahedral crystals up-4 mm in size" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Cubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "on {111}, contact and penetration twins" } ], "name": "Twinning" }, { "scalars": [ { "value": "{111}, perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven-conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "4.5-5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-adamantine" } ], "name": "Luster" }, { "scalars": [ { "value": "1.466-1.480" } ], "name": "Refractive index (n)" }, { "scalars": [ { "value": "None" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "1.92-1.93" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "4/m$\\bar{3}$2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "Fd3m" } ], "name": "Space group" }, { "scalars": [ { "value": "Cubic hexoctahedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Magadiite", "title": "Wikipedia: Magadiite" } ], "names": [ "Magadiite" ], "chemicalFormula": "NaSi$_{7}$O$_{13}$(OH)$_{3}$.4(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Phyllosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.EA.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "7.25" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "7.25" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "15.69" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "96.8" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "White" } ], "name": "Color" }, { "scalars": [ { "value": "Minute platy crystals, spherulitic aggregates, powdery" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Puttylike" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-dull" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.25" } ], "conditions": [ { "scalars": [ { "value": "calculated" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.470" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "Yellow-white under both long and short wave" } ], "name": "fluorescence" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Hodgkinsonite", "title": "Wikipedia: Hodgkinsonite" } ], "names": [ "Hodgkinsonite" ], "chemicalFormula": "NaSi$_{7}$O$_{13}$(OH)$_{3}$.4(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Nesosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.AE.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "11.76" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.31" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "8.18" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "4.5-5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "1.720" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.741" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.746" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.026" } ], "name": "Birefringence" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Gedrite", "title": "Wikipedia: Gedrite" } ], "names": [ "Gedrite" ], "chemicalFormula": "Mg$_{2}$(Mg$_{3}$Al$_{2}$)(Si$_{6}$Al$_{2}$)O$_{22}$(OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Inosilicate, ferromagnesian amphibole group" } ], "name": "Category" }, { "scalars": [ { "value": "09.DD.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "18.59" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "17.89" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.3" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "White, gray, brown, green, black" } ], "name": "Color" }, { "scalars": [ { "value": "Bladed and prismatic crystals, fibrous and sheath like aggregates." } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "contact twinning" } ], "name": "Twinning" }, { "scalars": [ { "value": "56 and 126$^{\\circ}$-good, {210} perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Splintery" } ], "name": "Fracture" }, { "scalars": [ { "value": "5.5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-silky" } ], "name": "Luster" }, { "scalars": [ { "value": "1.671" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.681" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.690" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.019" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Weak-moderate" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "3.18-3.33" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Orthorhombic 2/m 2/m 2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Perovskite", "title": "Wikipedia: Perovskite" } ], "names": [ "Perovskite" ], "chemicalFormula": "CaTiO$_{3}$", "properties": [ { "scalars": [ { "value": "Oxide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "04.CC.30" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Black, reddish brown, pale yellow, yellowish orange" } ], "name": "Color" }, { "scalars": [ { "value": "Pseudo cubic-crystals show a cubic outline" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic (2/m 2/m 2/m) space group: ''Pnma''" } ], "name": "Crystal system" }, { "scalars": [ { "value": "[100] good, [010] good, [001] good" } ], "name": "Cleavage" }, { "scalars": [ { "value": "complex penetration twins" } ], "name": "Twinning" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "5-5.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine-metallic, may be dull" } ], "name": "Luster" }, { "scalars": [ { "value": "2.3" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "2.34" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "2.38" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "grayish white" } ], "name": "Streak" }, { "scalars": [ { "value": "3.98-4.26" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "non-radioactive, non-magnetic" } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Inyoite", "title": "Wikipedia: Inyoite" } ], "names": [ "Inyoite" ], "chemicalFormula": "Ca(H$_{4}$B$_{3}$O$_{7}$)(OH).4(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Nesoborates" } ], "name": "Category" }, { "scalars": [ { "value": "06.CA.35" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "10.63" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "12.06" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "8.4" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "114.03" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Commonly as prismatic-tabular crystals, also in cockscomb aggregates of pseudorhombohedral crystals, coarsely spherulitic or granular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Good on {001}, distinct on {010}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Irregular/uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.495" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.505-1.512" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.520" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "Maximum 0.025" } ], "name": "Birefringence" }, { "scalars": [ { "value": "1.875" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Monoclinic 2/m-prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Millosevichite", "title": "Wikipedia: Millosevichite" } ], "names": [ "Millosevichite" ], "chemicalFormula": "Al$_{2}$(SO$_{4}$)$_{3}$", "properties": [ { "scalars": [ { "value": "Sulfate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "07.AB.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "8.05" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "21.19" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "6" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Indigo, bright red, brick-red" } ], "name": "Color" }, { "scalars": [ { "value": "Granular aggregates of minute crystals, stalactitic porous masses" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "1.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.72" } ], "conditions": [ { "scalars": [ { "value": "measured" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.500" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.515" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.015" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Hygroscopic" } ], "name": "Other" }, { "scalars": [ { "value": "R$\\bar{3}$" } ], "name": "H-M symbol ($\\bar{3}$) Space Group" }, { "scalars": [ { "value": "Trigonal rhombohedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Schr\u00f6ckingerite", "title": "Wikipedia: Schr\u00f6ckingerite" } ], "names": [ "Schr\u00f6ckingerite" ], "chemicalFormula": "NaCa$_{3}$(UO$_{2}$)[F(CO$_{3}$)$_{3}$(SO$_{4}$)].10(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Carbonate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "05.EG.05" } ], "name": "Strunz classification" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Pargasite", "title": "Wikipedia: Pargasite" } ], "names": [ "Pargasite" ], "chemicalFormula": "NaCa$_{2}$(Mg$_{4}$Al)(Si$_{6}$Al$_{2}$)O$_{22}$(OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Silicate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "Bluish green, grayish black, light brown" } ], "name": "Color" }, { "scalars": [ { "value": "S-ut prismatic-tabular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic, 2/m" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Simple and lamellar-common" } ], "name": "Twinning" }, { "scalars": [ { "value": "{110} perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Splintery" } ], "name": "Fracture" }, { "scalars": [ { "value": "5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.630" } ], "name": "Refractive index (n$\\alpha$)" }, { "scalars": [ { "value": "1.640" } ], "name": "Refractive index (n$\\beta$)" }, { "scalars": [ { "value": "1.650" } ], "name": "Refractive index (n$\\gamma$)" }, { "scalars": [ { "value": "0.020 max." } ], "name": "Birefringence" }, { "scalars": [ { "value": "3.04-3.17" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Rozenite", "title": "Wikipedia: Rozenite" } ], "names": [ "Rozenite" ], "chemicalFormula": "Fe$^{2+}$SO$_{4}$.4(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Sulfate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "07.CB.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "29.06.06.01" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Colorless, white, pale green" } ], "name": "Color" }, { "scalars": [ { "value": "As concretions and nodules, most commonly as powdery efflorescences or coatings on melanterite" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic-prismatic H-M Symbol (2/m) Space Group: P 21/n" } ], "name": "Crystal system" }, { "scalars": [ { "value": "2-3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-dull" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.29" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.526-1.528" } ], "name": "Refractive index (n$\\alpha$)" }, { "scalars": [ { "value": "1.536-1.537" } ], "name": "Refractive index (n$\\beta$)" }, { "scalars": [ { "value": "1.541-1.545" } ], "name": "Refractive index (n$\\gamma$)" }, { "scalars": [ { "value": "Water soluble" } ], "name": "Solubility" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Masuyite", "title": "Wikipedia: Masuyite" } ], "names": [ "Masuyite" ], "chemicalFormula": "Pb[(UO$_{2}$)$_{3}$O$_{3}$(OH)$_{2}$].3H$_{2}$O", "properties": [ { "scalars": [ { "value": "Oxide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "04.GB.35" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "13.98" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "12.11" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "14.2" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "1.785" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.895" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.915" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.130" } ], "name": "Birefringence" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Cattierite", "title": "Wikipedia: Cattierite" } ], "names": [ "Cattierite" ], "chemicalFormula": "CoS$_{2}$", "properties": [ { "scalars": [ { "value": "Sulfide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "2.EB.05a" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.52" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Pink-grayish white" } ], "name": "Color" }, { "scalars": [ { "value": "Cubic crystals and granular intergrowths" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Cubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "4.82" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2/m$\\bar{3}$" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P a3" } ], "name": "Space group" }, { "scalars": [ { "value": "Isometric diploidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Berlinite", "title": "Wikipedia: Berlinite" } ], "names": [ "Berlinite" ], "chemicalFormula": "AlPO$_{4}$", "properties": [ { "scalars": [ { "value": "Phosphate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "08.AA.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "4.941" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "10.94" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "3" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless, pale gray, may be pale rose" } ], "name": "Color" }, { "scalars": [ { "value": "Typically granular-massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Subparallel lamellae" } ], "name": "Twinning" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "6.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "2.64-2.66" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.524" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.532" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.008" } ], "name": "Birefringence" }, { "scalars": [ { "value": "32" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P3$_{1}$21" } ], "name": "Space group" }, { "scalars": [ { "value": "Trigonal trapezohedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Cubanite", "title": "Wikipedia: Cubanite" } ], "names": [ "Cubanite" ], "chemicalFormula": "CuFe$_{2}$S$_{3}$", "properties": [ { "scalars": [ { "value": "Sulfide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.CB.55a" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "6.467(1)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "11.117(1)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.231(2)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Bronze-brass-yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Crystals elongated-thick tabular, striated also massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Common with twin plane {110} in pairs, also as fourlings and pseudohexagonal sixlings" } ], "name": "Twinning" }, { "scalars": [ { "value": "Parting on {110} and {1$\\bar{3}$0}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "3.5-4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Black" } ], "name": "Streak" }, { "scalars": [ { "value": "4.0-4.2" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Strongly magnetic" } ], "name": "Other" }, { "scalars": [ { "value": "Orthorhombic (2/m 2/m 2/m)-dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Template:Infobox_mineral/doc", "title": "Wikipedia: Template:Infobox mineral/doc" } ], "names": [ "Template:Infobox mineral/doc" ], "chemicalFormula": "aluminium oxide with chromium, Al$_{2}$O$_{3}$:Cr", "properties": [ { "scalars": [ { "value": "Mineral variety" } ], "name": "Category" }, { "scalars": [ { "value": "Red, may be brownish, purplish or pinkish" } ], "name": "Color" }, { "scalars": [ { "value": "Varies with locality. Terminated tabular hexagonal prisms." } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal (Hexagonal Scalenohedral) Symbol (-3 2/m) Space Group: R-3c" } ], "name": "Crystal system" }, { "scalars": [ { "value": "No true cleavage" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven or conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "9.0" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "white" } ], "name": "Streak" }, { "scalars": [ { "value": "4.0" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.768-1.772" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.760-1.763" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "Birefringence" } ], "name": "Refractive index" }, { "scalars": [ { "value": "0.008" } ], "name": "Refractive index" }, { "scalars": [ { "value": "Orangey red, purplish red" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "red under longwave" } ], "name": "fluorescence" }, { "scalars": [ { "value": "2044" } ], "units": "$^{\\circ}$C", "name": "Melting point" }, { "scalars": [ { "value": "none" } ], "name": "Solubility" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Greenalite", "title": "Wikipedia: Greenalite" } ], "names": [ "Greenalite" ], "chemicalFormula": "(Fe$^{2+}$,Fe$^{3+}$)$_{2-3}$Si$_{2}$O$_{5}$OH$_{4}$", "properties": [ { "scalars": [ { "value": "Phyllosilicates, Kaolinite-serpentine group" } ], "name": "Category" }, { "scalars": [ { "value": "09.ED.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.54" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "9.55" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "7.44" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "104.2" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Green, light yellow-green" } ], "name": "Color" }, { "scalars": [ { "value": "Rare minute crystals, rounded grains common, as porphyroblasts, oolites" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Dull, earthy" } ], "name": "Luster" }, { "scalars": [ { "value": "Greenish-gray" } ], "name": "Streak" }, { "scalars": [ { "value": "2.85-3.15" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.650-1.675" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.674" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.674" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.024" } ], "name": "Birefringence" }, { "scalars": [ { "value": "X=pale yellow, Y and Z=green" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Magnetic" } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Hazenite", "title": "Wikipedia: Hazenite" } ], "names": [ "Hazenite" ], "chemicalFormula": "KNaMg2(PO4)2.14H2O", "properties": [ { "scalars": [ { "value": "Phosphate mineral, Struvite group" } ], "name": "Category" }, { "scalars": [ { "value": "08.CH.40" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "40.01.01.03" } ], "name": "Dana classification" }, { "scalars": [ { "value": "6.9349" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "25.1737" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "11.2189" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "276.331" } ], "units": "g/mol", "name": "Molecular weight" }, { "scalars": [ { "value": "Colorless" } ], "name": "Color" }, { "scalars": [ { "value": "Radiating elongated tabular or prismatic clusters or single bladed tabular crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{001} Good" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2-2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.494(1)" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.498(1)" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.503(1)" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "1.91" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "In water" } ], "name": "Solubility" }, { "scalars": [ { "value": "Pmnb" } ], "name": "Orthorhombic dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Jeremejevite", "title": "Wikipedia: Jeremejevite" } ], "names": [ "Jeremejevite" ], "chemicalFormula": "Al$_{6}$B$_{5}$O$_{15}$(F,OH)$_{3}$", "properties": [ { "scalars": [ { "value": "Borate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "06.AB.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "8.5591(3)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8.1814(6)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless, white, yellowish, blue" } ], "name": "Color" }, { "scalars": [ { "value": "Prismatic" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Hexagonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None observed" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "6.5-7.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.653" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.640" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.0130" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Colorless-light blue-violet" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.28-3.31" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Piezoelectric" } ], "name": "Other" }, { "scalars": [ { "value": "6/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 6$_{3}$/m" } ], "name": "Space group" }, { "scalars": [ { "value": "Hexagonal dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Huttonite", "title": "Wikipedia: Huttonite" } ], "names": [ "Huttonite" ], "chemicalFormula": "ThSiO$_{4}$", "properties": [ { "scalars": [ { "value": "Silicate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "09.AD.35" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "6.77" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "6.96" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.49" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "104.99" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "324.12" } ], "units": "g/mol", "name": "Molecular weight" }, { "scalars": [ { "value": "Colorless, cream, pale yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Prismatic, flattened, typically as anhedral grains" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Distinct along [001], indistinct along [100]" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "4.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine" } ], "name": "Luster" }, { "scalars": [ { "value": "1.898" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.900" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.922" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.0240" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Dull white" } ], "conditions": [ { "scalars": [ { "value": "under shortwave" } ], "name": "Note" } ], "name": "fluorescence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "7.1" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 21/n" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Patr\u00f3nite", "title": "Wikipedia: Patr\u00f3nite" } ], "names": [ "Patr\u00f3nite" ], "chemicalFormula": "VS$_{4}$", "properties": [ { "scalars": [ { "value": "Sulfide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "12.11" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "10.42" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.78" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "100.8" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "02.EC.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Lead-gray on fresh surfaces-gray-black after exposure-air" } ], "name": "Color" }, { "scalars": [ { "value": "Occurs as columnar crystal aggregates and in massive form" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Distinct columnar" } ], "name": "Cleavage" }, { "scalars": [ { "value": "2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Strong" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Black" } ], "name": "Streak" }, { "scalars": [ { "value": "2.82" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Monoclinic 2/m prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Chrome_chalcedony", "title": "Wikipedia: Chrome chalcedony" } ], "names": [ "Chrome chalcedony" ], "chemicalFormula": "Silica (SiO$_{2}$)", "properties": [ { "scalars": [ { "value": "Oxide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "60" } ], "units": "g / mol", "name": "Molecular weight" }, { "scalars": [ { "value": "Emerald green" } ], "name": "Color" }, { "scalars": [ { "value": "Trigonal and Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Absent" } ], "name": "Cleavage" }, { "scalars": [ { "value": "6-7" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Uneven, splintery, conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Vitreous, dull, greasy, silky" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "Usually 2.60. Sometimes greater than 2.62" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Taranakite", "title": "Wikipedia: Taranakite" } ], "names": [ "Taranakite" ], "chemicalFormula": "(K,Na)$_{3}$(Al,Fe$^{3+}$)$_{5}$(PO$_{4}$)$_{2}$(HPO$_{4}$)$_{6}$.18H$_{2}$O", "properties": [ { "scalars": [ { "value": "Phosphate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "8.7025" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "95.05" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "6" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "1342.30" } ], "units": "g/mol", "name": "Molecular weight" }, { "scalars": [ { "value": "08.CH.25" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "White, pale yellow, or gray" } ], "name": "Color" }, { "scalars": [ { "value": "Platy, massive, nodular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Malleable, unctuous" } ], "name": "Tenacity" }, { "scalars": [ { "value": "1-2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "1.506-1.510" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.500-1.503" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "white" } ], "name": "Streak" }, { "scalars": [ { "value": "2.12-2.15" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Insoluble in water, Slightly soluble in acids" } ], "name": "Solubility" }, { "scalars": [ { "value": "$\\bar{3}$2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "R$\\bar{3}$2/c" } ], "name": "Space group" }, { "scalars": [ { "value": "Trigonal hexagonal scalenohedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Jennite", "title": "Wikipedia: Jennite" } ], "names": [ "Jennite" ], "chemicalFormula": "Ca$_{9}$Si$_{6}$O$_{18}$(OH)$_{6}$.8H$_{2}$O", "properties": [ { "scalars": [ { "value": "Silicate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "09.DG.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "10.56" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "7.25" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "10.81" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "99.7" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\alpha$)" }, { "scalars": [ { "value": "97.67" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "110.07" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\gamma$)" }, { "scalars": [ { "value": "1" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "1063" } ], "units": "g/mol", "name": "Molecular weight" }, { "scalars": [ { "value": "White" } ], "name": "Color" }, { "scalars": [ { "value": "Blade shaped crystals, fibrous aggregates, platy-sheet forms" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Triclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Distinct on [001]" } ], "name": "Cleavage" }, { "scalars": [ { "value": "3.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "conditions": [ { "scalars": [ { "value": "glassy" } ], "name": "Note" } ], "name": "Luster" }, { "scalars": [ { "value": "1.548-1.552" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.562-1.564" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.570-1.571" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.022" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Weak white" } ], "name": "fluorescence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.32-2.33" } ], "name": "Density" }, { "scalars": [ { "value": "pinacoidal" } ], "name": "Symmetry" }, { "scalars": [ { "value": "$\\bar{1}$" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P$\\bar{1}$" } ], "name": "Space group" }, { "scalars": [ { "value": "Triclinic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Baumhauerite", "title": "Wikipedia: Baumhauerite" } ], "names": [ "Baumhauerite" ], "chemicalFormula": "Pb$_{3}$As$_{4}$S$_{9}$", "properties": [ { "scalars": [ { "value": "Sulfosalt mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.HC.05b" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Gray-black-blue-gray" } ], "name": "Color" }, { "scalars": [ { "value": "Triclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Polysynthetic, on [100]" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on [100]" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic-dull" } ], "name": "Luster" }, { "scalars": [ { "value": "chocolate brown" } ], "name": "Streak" }, { "scalars": [ { "value": "5.33" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Asbestos", "title": "Wikipedia: Asbestos" } ], "names": [ "Asbestos" ], "chemicalFormula": "Mg$_{3}$Si$_{2}$O$_{5}$(OH)$_{4}$ Chrysotile is one of the six minerals that are regulated as asbestos\". The five others are tremolite", "properties": [ { "scalars": [ { "value": "amosite" } ], "conditions": [ { "scalars": [ { "value": "grunerite" } ], "name": "Note" } ], "name": "anthophyllte" }, { "scalars": [ { "value": "amosite" } ], "conditions": [ { "scalars": [ { "value": "grunerite" } ], "name": "Note" } ], "name": "anthophyllte" }, { "scalars": [ { "value": "amosite" } ], "conditions": [ { "scalars": [ { "value": "grunerite" } ], "name": "Note" } ], "name": "anthophyllte" }, { "scalars": [ { "value": "amosite" } ], "conditions": [ { "scalars": [ { "value": "grunerite" } ], "name": "Note" } ], "name": "anthophyllte" }, { "scalars": [ { "value": "amosite" } ], "conditions": [ { "scalars": [ { "value": "grunerite" } ], "name": "Note" } ], "name": "anthophyllte" }, { "scalars": [ { "value": "amosite" } ], "conditions": [ { "scalars": [ { "value": "grunerite" } ], "name": "Note" } ], "name": "anthophyllte" }, { "scalars": [ { "value": "amosite" } ], "conditions": [ { "scalars": [ { "value": "grunerite" } ], "name": "Note" } ], "name": "anthophyllte" }, { "scalars": [ { "value": "amosite" } ], "conditions": [ { "scalars": [ { "value": "grunerite" } ], "name": "Note" } ], "name": "anthophyllte" }, { "scalars": [ { "value": "amosite" } ], "conditions": [ { "scalars": [ { "value": "grunerite" } ], "name": "Note" } ], "name": "anthophyllte" }, { "scalars": [ { "value": "amosite" } ], "conditions": [ { "scalars": [ { "value": "grunerite" } ], "name": "Note" } ], "name": "anthophyllte" }, { "scalars": [ { "value": "amosite" } ], "conditions": [ { "scalars": [ { "value": "grunerite" } ], "name": "Note" } ], "name": "anthophyllte" }, { "scalars": [ { "value": "amosite" } ], "conditions": [ { "scalars": [ { "value": "grunerite" } ], "name": "Note" } ], "name": "anthophyllte" }, { "scalars": [ { "value": "amosite" } ], "conditions": [ { "scalars": [ { "value": "grunerite" } ], "name": "Note" } ], "name": "anthophyllte" }, { "scalars": [ { "value": "amosite" } ], "conditions": [ { "scalars": [ { "value": "grunerite" } ], "name": "Note" } ], "name": "anthophyllte" }, { "scalars": [ { "value": "amosite" } ], "conditions": [ { "scalars": [ { "value": "grunerite" } ], "name": "Note" } ], "name": "anthophyllte" }, { "scalars": [ { "value": "amosite" } ], "conditions": [ { "scalars": [ { "value": "grunerite" } ], "name": "Note" } ], "name": "anthophyllte" }, { "scalars": [ { "value": "amosite" } ], "conditions": [ { "scalars": [ { "value": "grunerite" } ], "name": "Note" } ], "name": "anthophyllte" }, { "scalars": [ { "value": "amosite" } ], "conditions": [ { "scalars": [ { "value": "grunerite" } ], "name": "Note" } ], "name": "anthophyllte" }, { "scalars": [ { "value": "amosite" } ], "conditions": [ { "scalars": [ { "value": "grunerite" } ], "name": "Note" } ], "name": "anthophyllte" }, { "scalars": [ { "value": "amosite" } ], "conditions": [ { "scalars": [ { "value": "grunerite" } ], "name": "Note" } ], "name": "anthophyllte" }, { "scalars": [ { "value": "amosite" } ], "conditions": [ { "scalars": [ { "value": "grunerite" } ], "name": "Note" } ], "name": "anthophyllte" }, { "scalars": [ { "value": "amosite" } ], "conditions": [ { "scalars": [ { "value": "grunerite" } ], "name": "Note" } ], "name": "anthophyllte" }, { "scalars": [ { "value": "amosite" } ], "conditions": [ { "scalars": [ { "value": "grunerite" } ], "name": "Note" } ], "name": "anthophyllte" }, { "scalars": [ { "value": "amosite" } ], "conditions": [ { "scalars": [ { "value": "grunerite" } ], "name": "Note" } ], "name": "anthophyllte" }, { "scalars": [ { "value": "amosite" } ], "conditions": [ { "scalars": [ { "value": "grunerite" } ], "name": "Note" } ], "name": "anthophyllte" }, { "scalars": [ { "value": "amosite" } ], "conditions": [ { "scalars": [ { "value": "grunerite" } ], "name": "Note" } ], "name": "anthophyllte" }, { "scalars": [ { "value": "amosite" } ], "conditions": [ { "scalars": [ { "value": "grunerite" } ], "name": "Note" } ], "name": "anthophyllte" }, { "scalars": [ { "value": "amosite" } ], "conditions": [ { "scalars": [ { "value": "grunerite" } ], "name": "Note" } ], "name": "anthophyllte" }, { "scalars": [ { "value": "amosite" } ], "conditions": [ { "scalars": [ { "value": "grunerite" } ], "name": "Note" } ], "name": "anthophyllte" }, { "scalars": [ { "value": "amosite" } ], "conditions": [ { "scalars": [ { "value": "grunerite" } ], "name": "Note" } ], "name": "anthophyllte" }, { "scalars": [ { "value": "amosite" } ], "conditions": [ { "scalars": [ { "value": "grunerite" } ], "name": "Note" } ], "name": "anthophyllte" }, { "scalars": [ { "value": "amosite" } ], "conditions": [ { "scalars": [ { "value": "grunerite" } ], "name": "Note" } ], "name": "anthophyllte" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Ancylite", "title": "Wikipedia: Ancylite" } ], "names": [ "Ancylite" ], "chemicalFormula": "Sr(Ce,La)(CO$_{3}$)$_{2}$(OH).H$_{2}$O", "properties": [ { "scalars": [ { "value": "Carbonate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "05.DC.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "16b.1.1.1" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Light yellow, orange-yellow, yellow-brown, grey" } ], "name": "Color" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Splintery" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "4-4.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Dull" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.95" } ], "conditions": [ { "scalars": [ { "value": "g/cm$^{3}$" } ], "name": "Note" } ], "name": "Density" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Sursassite", "title": "Wikipedia: Sursassite" } ], "names": [ "Sursassite" ], "chemicalFormula": "Mn$^{2+}$$_{2}$Al$_{3}$(SiO$_{4}$)(Si$_{2}$O$_{7}$)(OH)$_{3}$", "properties": [ { "scalars": [ { "value": "Sorosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.BG.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Red-brown-copper-red" } ], "name": "Color" }, { "scalars": [ { "value": "Botryoidal" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "[101] Distinct" } ], "name": "Cleavage" }, { "scalars": [ { "value": "3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Silky, Dull" } ], "name": "Luster" }, { "scalars": [ { "value": "1.73-1.76" } ], "name": "Refractive index" }, { "scalars": [ { "value": "0.030" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Strong, X=Z=colorless-pale yellow, Y=deep" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "yellow-brown" } ], "name": "Streak" }, { "scalars": [ { "value": "3.256" } ], "name": "Density" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Dimorphite", "title": "Wikipedia: Dimorphite" } ], "names": [ "Dimorphite" ], "chemicalFormula": "As$_{4}$S$_{3}$", "properties": [ { "scalars": [ { "value": "Sulfide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "11.24" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "9.90" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.56" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "395.88" } ], "units": "g/mol", "name": "Molecular weight" }, { "scalars": [ { "value": "02.FA.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "orange-yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Groups of pyramidal crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "none" } ], "name": "Cleavage" }, { "scalars": [ { "value": "brittle" } ], "name": "Fracture" }, { "scalars": [ { "value": "1.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "adamantine" } ], "name": "Luster" }, { "scalars": [ { "value": "none" } ], "name": "fluorescence" }, { "scalars": [ { "value": "yellow" } ], "name": "Streak" }, { "scalars": [ { "value": "3.59" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "burns without residue" } ], "name": "Other" }, { "scalars": [ { "value": "Orthorhombic (2/m 2/m 2/m)-dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Eskolaite", "title": "Wikipedia: Eskolaite" } ], "names": [ "Eskolaite" ], "chemicalFormula": "Cr$_{2}$O$_{3}$", "properties": [ { "scalars": [ { "value": "Oxide mineral, Hematite group, Corundum structural group" } ], "name": "Category" }, { "scalars": [ { "value": "04.CB.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "4.95" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "13.58" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "6" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Black-dark green" } ], "name": "Color" }, { "scalars": [ { "value": "Hexagonal prisms and plates" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "8" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous or metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Pale green" } ], "name": "Streak" }, { "scalars": [ { "value": "5.18" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Noted, emerald-green-olive-green" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "$\\bar{3}$2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "R$\\bar{3}$c" } ], "name": "Space group" }, { "scalars": [ { "value": "Trigonal hexagonal scalenohedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Bakerite", "title": "Wikipedia: Bakerite" } ], "names": [ "Bakerite" ], "chemicalFormula": "Ca$_{4}$B$_{4}$(BO$_{4}$)(SiO$_{4}$)$_{3}$(OH)$_{3}$.H$_{2}$O", "properties": [ { "scalars": [ { "value": "Nesosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.AJ.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "4.85" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "7.627" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "9.659" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "Colorless, white" } ], "name": "Color" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "4.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, dull" } ], "name": "Luster" }, { "scalars": [ { "value": "2.88" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.624" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.635" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.654" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.030" } ], "name": "Birefringence" }, { "scalars": [ { "value": "2/m-Prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Fletcherite", "title": "Wikipedia: Fletcherite" } ], "names": [ "Fletcherite" ], "chemicalFormula": "Cu(Ni,Co)$_{2}$S$_{4}$", "properties": [ { "scalars": [ { "value": "Sulfide mineral, Thiospinel group, Spinel structural group" } ], "name": "Category" }, { "scalars": [ { "value": "02.DA.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "9.520" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Steel gray, creamy white in polished section" } ], "name": "Color" }, { "scalars": [ { "value": "Minute subhedral-euhedral crystals typically enclosed within other sulfide minerals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Cubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "4.76" } ], "conditions": [ { "scalars": [ { "value": "calculated" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Good polish with moderate reflectivity" } ], "name": "Polish" }, { "scalars": [ { "value": "4/m$\\bar{3}$2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "Isometric hexoctahedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Hydrotalcite", "title": "Wikipedia: Hydrotalcite" } ], "names": [ "Hydrotalcite" ], "chemicalFormula": "Mg$_{6}$Al$_{2}$CO$_{3}$(OH)$_{16}$.4(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Carbonate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "3.065" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "23.07" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "3/8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "05.DA.50" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "White with possible brownish tint" } ], "name": "Color" }, { "scalars": [ { "value": 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"Fracture" }, { "scalars": [ { "value": "3.5-4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-silky" } ], "name": "Luster" }, { "scalars": [ { "value": "1.4711" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.474" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.0191" } ], "name": "Birefringence" }, { "scalars": [ { "value": "white" } ], "name": "Streak" }, { "scalars": [ { "value": "2.09-2.13 avg=2.11" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "non-magnetic, non-radioactive" } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Vanadiocarpholite", "title": "Wikipedia: Vanadiocarpholite" } ], "names": [ "Vanadiocarpholite" ], "chemicalFormula": "Mn$^{+2}$V$^{+3}$AlSi$_{2}$O$_{6}$(OH)$_{4}$", "properties": [ { "scalars": [ { "value": "Silicate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "9.DB.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "13.83" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "20.681" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.188" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Pale-straw yellow, honey-yellow-brown" } ], "name": "Color" }, { "scalars": [ { "value": "Prismatic-acicular crystal clusters, vein fillings" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {010}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Flexible" } ], "name": "Tenacity" }, { "scalars": [ { "value": "Vitreous, silky" } ], "name": "Luster" }, { "scalars": [ { "value": "1.684" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.691" } ], "name": "Refractive index 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"name": "Space group" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Antarcticite", "title": "Wikipedia: Antarcticite" } ], "names": [ "Antarcticite" ], "chemicalFormula": "CaCl$_{2}$.6H$_{2}$O", "properties": [ { "scalars": [ { "value": "Halide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "03.BB.30" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "7.9" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "3.95" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "1" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless" } ], "name": "Color" }, { "scalars": [ { "value": "Occurs as groups of acicular crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {0001}, very good on {1010}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2-3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.715" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.550" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.490-1.500" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.060" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Deliquescent" } ], "name": "Other" }, { "scalars": [ { "value": "3 2" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 321" } ], "name": "Space group" }, { "scalars": [ { "value": "Trigonal trapezohedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Slocum_stone", "title": "Wikipedia: Slocum stone" } ], "names": [ "Slocum 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"$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Gray-yellow" } ], "conditions": [ { "scalars": [ { "value": "reflection" } ], "name": "Note" } ], "name": "Color" }, { "scalars": [ { "value": "Prismatic crystals and intergrowths with cupalite" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Tetragonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{100}, distinct" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Malleable" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Dark gray" } ], "name": "Streak" }, { "scalars": [ { "value": "4.42" } ], "conditions": [ { "scalars": [ { "value": "calculated" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "4/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "I 4/mcm" } ], "name": "Space group" }, { "scalars": [ { "value": "Tetragonal ditetragonal dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Cupalite", "title": "Wikipedia: Cupalite" } ], "names": [ "Cupalite" ], "chemicalFormula": "(Cu,Zn,Fe)Al", "properties": [ { "scalars": [ { "value": "Native element class, alloy" } ], "name": "Category" }, { "scalars": [ { "value": "01.AA.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Steel-gray yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "4-4.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "5.12 g/cm$^{3}$" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "non-magnetic, non-radioactive" } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Kegelite", "title": "Wikipedia: Kegelite" } ], "names": [ "Kegelite" ], "chemicalFormula": "Pb$_{8}$Al$_{4}$Si$_{8}$O$_{20}$(SO$_{4}$)$_{2}$(CO$_{3}$)$_{4}$(OH)$_{8}$", "properties": [ { "scalars": [ { "value": "Silicate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "09.EC.80 Phyllosilicates" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "71.05.01.01" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Colorless-white" } ], "name": "Color" }, { "scalars": [ { "value": "Pseudohexagonal plates in spherical aggregates" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic Space group: A2/m,A2,Am" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {100}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Extremely $^{\\circ}$exible" } ], "name": "Tenacity" }, { "scalars": [ { "value": "no data" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "4.5" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.81" } ], "name": "Refractive index (n)" }, { "scalars": [ { "value": "parallel-{100}" } ], "name": "Refractive index" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Efremovite", "title": "Wikipedia: Efremovite" } ], "names": [ "Efremovite" ], "chemicalFormula": "(NH$_{4}$)$_{2}$Mg$_{2}$(SO$_{4}$)$_{3}$", "properties": [ { "scalars": [ { "value": "Sulfate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "07.AC.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "9.99" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "White-gray" } ], "name": "Color" }, { "scalars": [ { "value": "Equant grains and crusts" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Cubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "2.52" } ], "conditions": [ { "scalars": [ { "value": "calculated" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.550" } ], "name": "Refractive index (n)" }, { "scalars": [ { "value": "23" } ], "name": "H-M symbol" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Boussingaultite", "title": "Wikipedia: Boussingaultite" } ], "names": [ "Boussingaultite" ], "chemicalFormula": "(NH$_{4}$)$_{2}$Mg(SO$_{4}$)$_{2}$.6(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Sulfate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "07.CC.60" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "29.03.07.02" } ], "name": "Dana classification" }, { "scalars": [ { "value": "9.324(7)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "12.597(9)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.211(5)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "1.472" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "360.60" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "Colorless, yellow pink, light yellow, pink, colourless in transmitted light" } ], "name": "Color" }, { "scalars": [ { "value": "Monoclinic-prismatic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{201} perfect" } ], "conditions": [ { "scalars": [ { "value": "synthetic" } ], "name": "Note" } ], "name": "Cleavage" }, { "scalars": [ { "value": "2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous , silky" } ], "conditions": [ { "scalars": [ { "value": "glassy" } ], "name": "Note" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "1.73" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.7" } ], "conditions": [ { "scalars": [ { "value": "g/cm$^3$" } ], "name": "Note" } ], "name": "Density" }, { "scalars": [ { "value": "Soluble in H$_{2}$O" } ], "name": "Solubility" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Chlormayenite", "title": "Wikipedia: Chlormayenite" } ], "names": [ "Chlormayenite" ], "chemicalFormula": "Ca$_{12}$Al$_{14}$O$_{32}$[$\\Box$_{4}$Cl$_{2}$]", "properties": [ { "scalars": [ { "value": "Oxide mineral , Mayenite supergroup" } ], "name": "Category" }, { "scalars": [ { "value": "04.CC.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "11.98" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless" } ], "name": "Color" }, { "scalars": [ { "value": "Microscopic anhedral grains" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Cubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.85" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.614-1.643" } ], "name": "Refractive index" }, { "scalars": [ { "value": "$\\bar{4}$3m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "I$\\bar{4}$3d" } ], "name": "Space group" }, { "scalars": [ { "value": "Isometric hextetrahedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Kampfite", "title": "Wikipedia: Kampfite" } ], "names": [ "Kampfite" ], "chemicalFormula": "Ba$_{12}$(Si$_{11}$Al$_{5}$)O$_{31}$(CO$_{3}$)$_{8}$Cl$_{5}$", "properties": [ { "scalars": [ { "value": "Phyllosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "9.EG.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "31.2329" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.2398" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "9.0966" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "106.933" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "1" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Light blue gray" } ], "name": "Color" }, { "scalars": [ { "value": "Irregular grains or anhedral crystal inclusions" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Good on {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.45" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.642" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.594" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.048" } ], "name": "Birefringence" }, { "scalars": [ { "value": "m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "Cc" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic domatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Reinerite", "title": "Wikipedia: Reinerite" } ], "names": [ "Reinerite" ], "chemicalFormula": "Zn$_{3}$(AsO$_{3}$)$_{2}$", "properties": [ { "scalars": [ { "value": "arsenite" } ], "name": "Category" }, { "scalars": [ { "value": "04.JA.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "6.092" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "14.407" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "7.811" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "685.55" } ], "name": "Unit cell (V)" }, { "scalars": [ { "value": "Sky blue, yellow green" } ], "name": "Color" }, { "scalars": [ { "value": "Rough striated pseudohexagonal crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Good on {110}, {011} and {111}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "5-5.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-adamantine" } ], "name": "Luster" }, { "scalars": [ { "value": "1.740" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.790" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.820" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "Maxium 0.080" } ], "name": "Birefringence" }, { "scalars": [ { "value": "4.27" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Orthorhombic dipyramidal 2/m 2/m 2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Andyrobertsite", "title": "Wikipedia: Andyrobertsite" } ], "names": [ "Andyrobertsite" ], "chemicalFormula": "KCdCu$_{5}$(AsO$_{4}$)$_{4}$(H$_{2}$AsO$_{4}$).2H$_{2}$O", "properties": [ { "scalars": [ { "value": "Arsenate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "9.81" } ], "name": "Unit cell (a)" }, { "scalars": [ { "value": "10.034" } ], "name": "Unit cell (b)" }, { "scalars": [ { "value": "9.975" } ], "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "08.DH.50 08" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "42.09.02.03" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Blue" } ], "name": "Color" }, { "scalars": [ { "value": "Platy" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic-Prismatic, H-M symbol (2/m), space group P2$_{1}$/m" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{100} good" } ], "name": "Cleavage" }, { "scalars": [ { "value": "3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.72" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.749" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.757" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.037" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Pale blue" } ], "name": "Streak" }, { "scalars": [ { "value": "4" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Duftite", "title": "Wikipedia: Duftite" } ], "names": [ "Duftite" ], "chemicalFormula": "PbCuAsO$_{4}$(OH)", "properties": [ { "scalars": [ { "value": "Arsenate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "426.67" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "08.BH.35" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "41.5.1.4" } ], "name": "Dana classification" }, { "scalars": [ { "value": "7.768(1)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "9.211(1)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.999(1)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Green, olive green or grey green. Generally zoned due-compositional variations" } ], "name": "Color" }, { "scalars": [ { "value": "Tiny crystals elongated along [001] with curved and rough faces, aggregated in-crusts. Crystals may be pseudo-octahedral." } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic 222 disphenoidal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Indistinct" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven-conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "4.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous on fracture surfaces and dull on crystal faces" } ], "name": "Luster" }, { "scalars": [ { "value": "2.03-2.04" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "2.06-2.08" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "2.08-2.10" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.06" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Pale green or white" } ], "name": "Streak" }, { "scalars": [ { "value": "6.4" }, { "value": "6.60" } ], "conditions": [ { "scalars": [ { "value": "measured" }, { "value": "calculated" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Readily soluble in acids" } ], "name": "Solubility" }, { "scalars": [ { "value": "Decrepitates on heating. Not radioactive." } ], "name": "Other" }, { "scalars": [ { "value": "Orthorhombic 222" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Conichalcite", "title": "Wikipedia: Conichalcite" } ], "names": [ "Conichalcite" ], "chemicalFormula": "CaCu(AsO$_{4}$)(OH)", "properties": [ { "scalars": [ { "value": "Arsenate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.BH.35" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "41.5.1.2" } ], "name": "Dana classification" }, { "scalars": [ { "value": "7.39(1)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "9.23(1)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.83(1)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "397.66" } ], "units": "$\\AA^3$", "name": "Unit cell volume" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Grass-green-yellowish green, pistachio-green, emerald-green, may be zoned" } ], "name": "Color" }, { "scalars": [ { "value": "Crusts of acicular-almost fibrous crystals. Also as botryoidal masses and compact crusts." } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Rare on {001}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Absent" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "4.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, greasy" } ], "name": "Luster" }, { "scalars": [ { "value": "1.778-1.800" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.795-1.831" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.801-1.846" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.023-0.046" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Visible" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Green" } ], "name": "Streak" }, { "scalars": [ { "value": "4.3" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Orthorhombic (2 2 2)-disphenoidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Template:Infobox_mineral/testcases", "title": "Wikipedia: Template:Infobox mineral/testcases" } ], "names": [ "Template:Infobox mineral/testcases" ], "chemicalFormula": "SiO2", "properties": [ { "scalars": [ { "value": "Mineral variety" } ], "name": "Category" }, { "scalars": [ { "value": "Violet" } ], "name": "Color" }, { "scalars": [ { "value": "6-sided prism ending in 6-sided pyramid" } ], "conditions": [ { "scalars": [ { "value": "typical" } ], "name": "Note" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "rhombohedral class 32" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Dauphine law, Brazil law, and Japan law" } ], "name": "Twinning" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "7-lower in impure varieties" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous/glossy" } ], "name": "Luster" }, { "scalars": [ { "value": "1.543-1.553" } ], "name": "Refractive index (n$\\omega$)" }, { "scalars": [ { "value": "1.552-1.554" } ], "name": "Refractive index (n$\\epsilon$)" }, { "scalars": [ { "value": "+0.009" } ], "conditions": [ { "scalars": [ { "value": "B-G interval" } ], "name": "Note" } ], "name": "Birefringence" }, { "scalars": [ { "value": "None" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.65 constant" }, { "value": "variable in impure varieties" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1650$\\pm$75" } ], "units": "$^{\\circ}$C", "name": "Melting point" }, { "scalars": [ { "value": "H$_{2}$O insoluble" } ], "name": "Solubility" }, { "scalars": [ { "value": "Piezoelectric" } ], "name": "Other" }, { "scalars": [ { "value": "Mineral variety" } ], "name": "Category" }, { "scalars": [ { "value": "Violet" } ], "name": "Color" }, { "scalars": [ { "value": "6-sided prism ending in 6-sided pyramid" } ], "conditions": [ { "scalars": [ { "value": "typical" } ], "name": "Note" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "rhombohedral class 32" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Dauphine law, Brazil law, and Japan law" } ], "name": "Twinning" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "7-lower in impure varieties" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous/glossy" } ], "name": "Luster" }, { "scalars": [ { "value": "1.543-1.553" } ], "name": "Refractive index (n$\\omega$)" }, { "scalars": [ { "value": "1.552-1.554" } ], "name": "Refractive index (n$\\epsilon$)" }, { "scalars": [ { "value": "+0.009" } ], "conditions": [ { "scalars": [ { "value": "B-G interval" } ], "name": "Note" } ], "name": "Birefringence" }, { "scalars": [ { "value": "None" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.65 constant" }, { "value": "variable in impure varieties" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1650$\\pm$75" } ], "units": "$^{\\circ}$C", "name": "Melting point" }, { "scalars": [ { "value": "H$_{2}$O insoluble" } ], "name": "Solubility" }, { "scalars": [ { "value": "Piezoelectric" } ], "name": "Other" }, { "scalars": [ { "value": "Mineral variety" } ], "name": "Category" }, { "scalars": [ { "value": "Violet" } ], "name": "Color" }, { "scalars": [ { "value": "6-sided prism ending in 6-sided pyramid" } ], "conditions": [ { "scalars": [ { "value": "typical" } ], "name": "Note" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "rhombohedral class 32" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Dauphine law, Brazil law, and Japan law" } ], "name": "Twinning" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "7-lower in impure varieties" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous/glossy" } ], "name": "Luster" }, { "scalars": [ { "value": "1.543-1.553" } ], "name": "Refractive index (n$\\omega$)" }, { "scalars": [ { "value": "1.552-1.554" } ], "name": "Refractive index (n$\\epsilon$)" }, { "scalars": [ { "value": "+0.009" } ], "conditions": [ { "scalars": [ { "value": "B-G interval" } ], "name": "Note" } ], "name": "Birefringence" }, { "scalars": [ { "value": "None" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.65 constant" }, { "value": "variable in impure varieties" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1650$\\pm$75" } ], "units": "$^{\\circ}$C", "name": "Melting point" }, { "scalars": [ { "value": "H$_{2}$O insoluble" } ], "name": "Solubility" }, { "scalars": [ { "value": "Piezoelectric" } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Aktashite", "title": "Wikipedia: Aktashite" } ], "names": [ "Aktashite" ], "chemicalFormula": "Cu$_{6}$Hg$_{3}$As$_{4}$S$_{12}$", "properties": [ { "scalars": [ { "value": "Sulfosalt" } ], "name": "Category" }, { "scalars": [ { "value": "02.GA.30" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "1667.51" } ], "units": "g/mol", "name": "Molecular weight" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Galkhaite", "title": "Wikipedia: Galkhaite" } ], "names": [ "Galkhaite" ], "chemicalFormula": "(Cs,Tl)(Hg,Cu,Zn)$_{6}$(As,Sb)$_{4}$S$_{12}$", "properties": [ { "scalars": [ { "value": "Sulfosalt minerals" } ], "name": "Category" }, { "scalars": [ { "value": "02.GB.20" } ], "name": "Strunz classification" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Alacr\u00e1nite", "title": "Wikipedia: Alacr\u00e1nite" } ], "names": [ "Alacr\u00e1nite" ], "chemicalFormula": "As$_{8}$S$_{9}$", "properties": [ { "scalars": [ { "value": "Sulfide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "9.942" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "9.601" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "9.178" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "101.94" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "02.FA.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Orange-pale gray, rose-yellow internal reflections" } ], "name": "Color" }, { "scalars": [ { "value": "Equant grains" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Imperfect on {100}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "1.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, resinous, greasy" } ], "name": "Luster" }, { "scalars": [ { "value": "2.390(1)" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "2.520(2)" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.1300" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Yellow-orange" } ], "name": "Streak" }, { "scalars": [ { "value": "3.4-3.46" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Monoclinic prismatic (2/m)" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Allabogdanite", "title": "Wikipedia: Allabogdanite" } ], "names": [ "Allabogdanite" ], "chemicalFormula": "(Fe,Ni)$_{2}$P", "properties": [ { "scalars": [ { "value": "Phosphide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "01.BD.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.748" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "3.548" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.661" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Light straw-yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Minute exolution laminae in plessite" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "7.11" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P nma" } ], "name": "Space group" }, { "scalars": [ { "value": "Orthorhombic dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Allactite", "title": "Wikipedia: Allactite" } ], "names": [ "Allactite" ], "chemicalFormula": "Mn$_{7}$(AsO$_{4}$)$_{2}$(OH)$_{8}$", "properties": [ { "scalars": [ { "value": "Arsenate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "11.03" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "12.12" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.51" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "114" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "08.BE.30" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Brown, dark-light purplish red, brownish red, colorless-white" } ], "name": "Color" }, { "scalars": [ { "value": "Distinct, {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "4.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, slightly greasy on fracture surfaces" } ], "name": "Luster" }, { "scalars": [ { "value": "1.755-1.761" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.772-1.786" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.774-1.787" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "X=blood-red, Y=pale yellow, Z=sea-green" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Gray-faint brown" } ], "name": "Streak" }, { "scalars": [ { "value": "3.83" }, { "value": "3.94" } ], "conditions": [ { "scalars": [ { "value": "meas." }, { "value": "calc." } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2/m" } ], "name": "point group" }, { "scalars": [ { "value": "P2$_{1}$/a" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Allargentum", "title": "Wikipedia: Allargentum" } ], "names": [ "Allargentum" ], "chemicalFormula": "Ag$_{1-x}$Sb$_{x}$", "properties": [ { "scalars": [ { "value": "Sulfide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "2.945" } ], "units": "$\\AA$", "name": "Unit cell ( a)" }, { "scalars": [ { "value": "4.77" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "02.AA.30" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "02.02.01.02" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Silver gray" } ], "name": "Color" }, { "scalars": [ { "value": "4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "10.0" }, { "value": "10.12" } ], "conditions": [ { "scalars": [ { "value": "meas." }, { "value": "calc." } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "6/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P6$_{3}$/mmc" } ], "name": "Space group" }, { "scalars": [ { "value": "Hexagonal-dihexagonal dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Alleghanyite", "title": "Wikipedia: Alleghanyite" } ], "names": [ "Alleghanyite" ], "chemicalFormula": "Mn$_{5}$(SiO$_{4}$)$_{2}$(OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Nesosilicates, Humite group" } ], "name": "Category" }, { "scalars": [ { "value": "10.46" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "4.86" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "8.3" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "109.133" } ], "units": "$^{\\circ}$", "name": "Unit cell (beta)" }, { "scalars": [ { "value": "492.87" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "09.AF.45" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "52.3.2b.1" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Brown, bright pink, grayish pink, white" } ], "name": "Color" }, { "scalars": [ { "value": "Granular, anhedral-subhedral crystals in matrix" } ], "name": "Crystal 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} ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic-prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Alluaudite", "title": "Wikipedia: Alluaudite" } ], "names": [ "Alluaudite" ], "chemicalFormula": "(Na,Ca)Mn$^{2+}$(Fe$^{3+}$,Mn$^{2+}$,Fe$^{2+}$,Mg)$_{2}$(PO$_{4}$)$_{3}$", "properties": [ { "scalars": [ { "value": "Phosphate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.AC.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "38.2.3.6" } ], "name": "Dana classification" }, { "scalars": [ { "value": "11.03" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "12.53" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.4" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "97.57" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "Dirty yellow-brownish yellow, grayish green, superficially dull greenish black, brownish black, black, when altered" } ], "name": "Color" }, { "scalars": [ { "value": "Platy-radiating fibrous, nodular, granular, massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Polysynthetic" } ], "name": "Twinning" }, { "scalars": [ { "value": "Distinct/ good on {100} and {010}, good on {110}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "5-5.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Brownish yellow" } ], "name": "Streak" }, { "scalars": [ { "value": "3.4-3.5" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.782" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.802" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.835" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.053" } ], "name": "Birefringence" }, { "scalars": [ { "value": "X=pale olive-green, straw-yellow-greenish yellow, Z=pale olive-greenish-brownish yellow" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "C 2/c" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Iranite", "title": "Wikipedia: Iranite" } ], "names": [ "Iranite" ], "chemicalFormula": "Pb$_{10}$Cu(CrO$_{4}$)$_{6}$(SiO$_{4}$)$_{2}$(F,OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Silicate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "7.FC.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "10.02" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "9.54" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "9.89" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "104.5" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\alpha$)" }, { "scalars": [ { "value": "66" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "108.5" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\gamma$)" }, { "scalars": [ { "value": "1" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Brown-orange" } ], "name": "Color" }, { "scalars": [ { "value": "Equant-flattened euhedral crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Triclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "Yellow" } ], "name": "Streak" }, { "scalars": [ { "value": "5.8" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.250-2.300" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "2.400-2.500" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.150-0.200" } ], "name": "Birefringence" }, { "scalars": [ { "value": "1" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P1" } ], "name": "Space group" }, { "scalars": [ { "value": "Triclinic pedial" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Anapaite", "title": "Wikipedia: Anapaite" } ], "names": [ "Anapaite" ], "chemicalFormula": "Ca$_{2}$Fe$^{2+}$[PO$_{4}$]$_{2}$.4H$_{2}$O", "properties": [ { "scalars": [ { "value": "Phosphate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.CH.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Green, greenish white" } ], "name": "Color" }, { "scalars": [ { "value": "Tabular crystals, radiating clusters, incrustations, fibrous, and in nodules" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "TriclinicPinacoidal H-M Symbol ($\\bar{1}$)" } ], "name": "Crystal system" }, { "scalars": [ { "value": "perfect on {001}, distinct on {010}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "3.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.602" } ], "name": "Refractive index (n$\\alpha$)" }, { "scalars": [ { "value": "1.613" } ], "name": "Refractive index (n$\\beta$)" }, { "scalars": [ { "value": "1.649" } ], "name": "Refractive index (n$\\gamma$)" }, { "scalars": [ { "value": "white" } ], "name": "Streak" }, { "scalars": [ { "value": "2.8" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Zeunerite", "title": "Wikipedia: Zeunerite" } ], "names": [ "Zeunerite" ], "chemicalFormula": "Cu(UO$_{2}$)$_{2}$(AsO$_{4}$)$_{2}$.(10-16)H$_{2}$O", "properties": [ { "scalars": [ { "value": "Arsenate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "08.EB.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "40.02a.14.01" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Yellow-green, emerald-green" } ], "name": "Color" }, { "scalars": [ { "value": "Crystals flat tabular on {001}, commonly subparallel-micaceous" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Tetragonal-Ditetragonal Dipyramidal (4/m 2/m 2/m)" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{001} perfect, {100}, distinct" } ], "name": "Cleavage" }, { "scalars": [ { "value": "2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "pale green" } ], "name": "Streak" }, { "scalars": [ { "value": "3.2-3.4" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.610-1.613" } ], "name": "Refractive index (n$\\omega$)" }, { "scalars": [ { "value": "1.582-1.585" } ], "name": "Refractive index (n$\\epsilon$)" }, { "scalars": [ { "value": "0.028" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Visible" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Radioactive" } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Dundasite", "title": "Wikipedia: Dundasite" } ], "names": [ "Dundasite" ], "chemicalFormula": "PbAl$_{2}$[(OH)$_{2}$CO$_{3}$]$_{2}$ . H$_{2}$O", "properties": [ { "scalars": [ { "value": "Carbonate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "9.08" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "16.37" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.62" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "05.DB.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "White-very pale blue, colorless in transmitted light" } ], "name": "Color" }, { "scalars": [ { "value": "Acicular crystals typically in spherical aggregates and matted crusts" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect On {010}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-silky" } ], "name": "Luster" }, { "scalars": [ { "value": "1.603" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.716" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.750" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.147" } ], "name": "Birefringence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.10-3.55" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Pbmm" } ], "name": "Orthorhombic dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Kaersutite", "title": "Wikipedia: Kaersutite" } ], "names": [ "Kaersutite" ], "chemicalFormula": "NaCa$_{2}$(Mg$_{3}$Ti$^{4+}$Al)(Si$_{6}$Al$_{2}$)O$_{22}$(OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Inosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.DE.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "66.01.03a.18" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Dark brown-black-yellow-brown, green-brown, or red-brown in thin section" } ], "name": "Color" }, { "scalars": [ { "value": "Prismatic phenocrysts, granular aggregates" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic-prismatic (2/m)" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Simple or multiple twinning parallel-{100}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {110}, intersecting at 56$^{\\circ}$ and 124$^{\\circ}$" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "Pale brownish-grey" } ], "name": "Streak" }, { "scalars": [ { "value": "3.20-3.28" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.670-1.689" } ], "name": "Refractive index (n$\\alpha$)" }, { "scalars": [ { "value": "1.690-1.741" } ], "name": "Refractive index (n$\\beta$)" }, { "scalars": [ { "value": "1.700-1.772" } ], "name": "Refractive index (n$\\gamma$)" }, { "scalars": [ { "value": "0.030-0.083" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Strong, X=yellow, yellow-brown, Y=red, red-brown, Z=deep brown, dark red-brown." } ], "name": "Pleochroism" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Tobermorite", "title": "Wikipedia: Tobermorite" } ], "names": [ "Tobermorite" ], "chemicalFormula": "Ca$_{5}$Si$_{6}$O$_{16}$(OH)$_{2}$.4H$_{2}$O, or, Ca$_{5}$Si$_{6}$(O,OH)$_{18}$.5H$_{2}$O", "properties": [ { "scalars": [ { "value": "Silicate mineral,, Calcium silicate hydrate" } ], "name": "Category" }, { "scalars": [ { "value": "11.17" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "7.38" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "22.94" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "90" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Pale pinkish white, white, brown" } ], "name": "Color" }, { "scalars": [ { "value": "As minute laths, fibrous bundles, rosettes or sheaves, radiating or plumose, fine granular, massive." } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic-Disphenoidal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{001} Perfect, {100} Imperfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, silky in fibrous aggregates" } ], "name": "Luster" }, { "scalars": [ { "value": "1.570" } ], "name": "Refractive index (n$\\alpha$)" }, { "scalars": [ { "value": "1.571" } ], "name": "Refractive index (n$\\beta$)" }, { "scalars": [ { "value": "1.575" } ], "name": "Refractive index (n$\\gamma$)" }, { "scalars": [ { "value": "0.005" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Fluorescent, Short UV:weak white-yellow, Long UV:weak white-yellow" } ], "name": "fluorescence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.423-2.458" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Orthorhombic 2 2 2" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Danalite", "title": "Wikipedia: Danalite" } ], "names": [ "Danalite" ], "chemicalFormula": "Fe$^{2+}$$_{4}$Be$_{3}$(SiO$_{4}$)$_{3}$S", "properties": [ { "scalars": [ { "value": "Sodalite-Feldspathoid" } ], "name": "Category" }, { "scalars": [ { "value": "09.FB.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "76.02.04.02" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Yellow, pink, reddish brown, red: colorless-pink in thin section" } ], "name": "Color" }, { "scalars": [ { "value": "Octahedral and dodecahedral crystals, typically massive or as segregations" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Isometric-hextetrahedral ($\\bar{4}$ 3m)" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{111} and {1$\\bar{1}$1}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Subconchoidal-uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5.5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous or greasy" } ], "name": "Luster" }, { "scalars": [ { "value": "Grey white" } ], "name": "Streak" }, { "scalars": [ { "value": "3.28-3.46" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.747-1.771" } ], "name": "Refractive index (n)" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Bararite", "title": "Wikipedia: Bararite" } ], "names": [ "Bararite" ], "chemicalFormula": "(NH$_{4}$)$_{2}$SiF$_{6}$", "properties": [ { "scalars": [ { "value": "Halide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "03.CH.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.77" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "4.78" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "1" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "White-colorless" } ], "name": "Color" }, { "scalars": [ { "value": "Tabular, sometimes elongated on {0001}, also appears in irregularly shaped or mammillary surfaces that comprise mainly cryp-halite" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Interpenetration twins , axis parallel-{0001}" } ], "conditions": [ { "scalars": [ { "value": "paddlewheels/darts" } ], "name": "Note" } ], "name": "Twinning" }, { "scalars": [ { "value": "[0001] perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.406$\\pm$0.001" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.391$\\pm$0.003" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.015$\\pm$0.003" } ], "name": "Birefringence" }, { "scalars": [ { "value": "2.152" } ], "conditions": [ { "scalars": [ { "value": "synthetic" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Dissolves in water" } ], "name": "Solubility" }, { "scalars": [ { "value": "salty taste" } ], "name": "Other" }, { "scalars": [ { "value": "hexagonal scalenohedral" } ], "name": "Symmetry" }, { "scalars": [ { "value": "$\\bar{3}$ 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "R $\\bar{3}$m" } ], "name": "Space group" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Hydrohalite", "title": "Wikipedia: Hydrohalite" } ], "names": [ "Hydrohalite" ], "chemicalFormula": "NaCl.2H$_{2}$O", "properties": [ { "scalars": [ { "value": "Halide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "03.BA.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Bityite", "title": "Wikipedia: Bityite" } ], "names": [ "Bityite" ], "chemicalFormula": "CaLiAl$_{2}$(AlBeSi$_{2}$)O$_{10}$(OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Phyllosilicate, Mica group" } ], "name": "Category" }, { "scalars": [ { "value": "09.EC.35" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "71.02.02c.03" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Pearly white, grayish blue, greenish blue, light brown" } ], "name": "Color" }, { "scalars": [ { "value": "Dense, micaceous aggregates or rosettes and encrustations" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic-prismatic (2/m)" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect micaceous on {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, pearly on cleavages" } ], "name": "Luster" }, { "scalars": [ { "value": "5.5" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.651" } ], "name": "Refractive index (n$\\alpha$)" }, { "scalars": [ { "value": "1.659" } ], "name": "Refractive index (n$\\beta$)" }, { "scalars": [ { "value": "1.661" } ], "name": "Refractive index (n$\\gamma$)" }, { "scalars": [ { "value": "0.010" } ], "name": "Birefringence" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Coyoteite", "title": "Wikipedia: Coyoteite" } ], "names": [ "Coyoteite" ], "chemicalFormula": "(NaFe$_{3}$S$_{5}$.2H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Sulfide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.FD.25" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "02.14.06.01" } ], "name": "Dana classification" }, { "scalars": [ { "value": "black" } ], "name": "Color" }, { "scalars": [ { "value": "Irregular grains-occurs as splotchy, anhedral crystals forming inclusions in other minerals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "triclinic1 or $\\bar{1}$" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{111} Perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "1-1.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Faint, from gray-pink" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "black" } ], "name": "Streak" }, { "scalars": [ { "value": "2.5-2.62" }, { "value": "2.879" } ], "conditions": [ { "scalars": [ { "value": "measured" }, { "value": "calculated" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Moderately magnetic" } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Changbaiite", "title": "Wikipedia: Changbaiite" } ], "names": [ "Changbaiite" ], "chemicalFormula": "PbNb$_{2}$O$_{6}$", "properties": [ { "scalars": [ { "value": "Oxide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "489.01" } ], "units": "gram/mole", "name": "Molecular weight" }, { "scalars": [ { "value": "04.DF.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Colorless, Cream white, Pale brown, Yellow brown, Pale yellow green" } ], "name": "Color" }, { "scalars": [ { "value": "Tabular-Form dimensions are thin in one direction." } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal-Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{0001} Perfect, {1011} Distinct" } ], "name": "Cleavage" }, { "scalars": [ { "value": "5.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine-Pearly" } ], "name": "Luster" }, { "scalars": [ { "value": "white" } ], "name": "Streak" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Colimaite", "title": "Wikipedia: Colimaite" } ], "names": [ "Colimaite" ], "chemicalFormula": "K$_{3}$VS$_{4}$", "properties": [ { "scalars": [ { "value": "Sulfide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.FB.25" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "dark golden" } ], "name": "Color" }, { "scalars": [ { "value": "acicular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "orthorhombic, 2/m2/m2/m" } ], "name": "Crystal system" }, { "scalars": [ { "value": "none observed" } ], "name": "Cleavage" }, { "scalars": [ { "value": "splintery" } ], "name": "Fracture" }, { "scalars": [ { "value": "resinous-greasy" } ], "name": "Luster" }, { "scalars": [ { "value": "yellow green" } ], "name": "Streak" }, { "scalars": [ { "value": "2.235" } ], "conditions": [ { "scalars": [ { "value": "g/cm$^3$" } ], "name": "Note" } ], "name": "Density" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Boleite", "title": "Wikipedia: Boleite" } ], "names": [ "Boleite" ], "chemicalFormula": "KPb$_{26}$Ag$_{9}$Cu$_{24}$(OH)$_{48}$Cl$_{62}$", "properties": [ { "scalars": [ { "value": "Halide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "03.DB.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "15.29" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "1" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Deep prussian blue-indigo" } ], "name": "Color" }, { "scalars": [ { "value": "Cubic crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Isometric" } ], "name": "Crystal system" }, { "scalars": [ { "value": "[001] perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "3.0-3.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-translucent" } ], "name": "Luster" }, { "scalars": [ { "value": "Vitreous-pearly" } ], "name": "Luster" }, { "scalars": [ { "value": "2.05" } ], "name": "Refractive index (n)" }, { "scalars": [ { "value": "Greenish blue" } ], "name": "Streak" }, { "scalars": [ { "value": "5.054" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Cubic (4/m 3 2/m) hexoctahedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Balangeroite", "title": "Wikipedia: Balangeroite" } ], "names": [ "Balangeroite" ], "chemicalFormula": "(Mg,Fe,Fe,Mn)$_{42}$Si$_{16}$O$_{54}$(OH)$_{40}$", "properties": [ { "scalars": [ { "value": "Inosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.DH.35" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "19.4" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "9.65" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "19.4" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "Brown" } ], "name": "Color" }, { "scalars": [ { "value": "Fibrous" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Very good in two directions" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "Vitreous-greasy" } ], "name": "Luster" }, { "scalars": [ { "value": "Brownish white" } ], "name": "Streak" }, { "scalars": [ { "value": "2.96-3.10" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.680" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.680" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.000" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Dark brown and yellow brown parallel and perpendicular-[001]" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "2m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P2n" } ], "name": "space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Coconinoite", "title": "Wikipedia: Coconinoite" } ], "names": [ "Coconinoite" ], "chemicalFormula": "Fe$^{3+}$$_{2}$Al$_{2}$(UO$_{2}$)$_{2}$(PO$_{4}$)$_{4}$(SO$_{4}$)(OH)$_{2}$.20(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Phosphate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.EB.35" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "12.45(6)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "12.96(3)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "17.22(5)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "105.7" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "489.01" } ], "units": "gram/mole", "name": "Molecular weight" }, { "scalars": [ { "value": "Pale creamy yellow" } ], "name": "Color" }, { "scalars": [ { "value": "As lathlike-platy grains, in microcrystalline aggregates seams and crusts." } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "1-2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine-pearly" } ], "name": "Luster" }, { "scalars": [ { "value": "1.550" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.588" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.590" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.040" } ], "name": "Birefringence" }, { "scalars": [ { "value": "X=colorless, Y=Z=pale yellow. Orientation: Y=elongation of laths with positive elongation, Y at 8$^{\\circ}$-25$^{\\circ}$-elongation of laths with negative elongation." } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.70" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Radioactive" } ], "name": "Other" }, { "scalars": [ { "value": "Monoclinic 2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Chambersite", "title": "Wikipedia: Chambersite" } ], "names": [ "Chambersite" ], "chemicalFormula": "Mn$_{3}$B$_{7}$O$_{13}$Cl", "properties": [ { "scalars": [ { "value": "Tek-borates" } ], "name": "Category" }, { "scalars": [ { "value": "06.GA.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "8.68(1)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8.68(1)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "12.26(1)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless-deep purple" } ], "name": "Color" }, { "scalars": [ { "value": "Pseudocubic crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Rare as interpenetration twins on [111]" } ], "name": "Twinning" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Subconchoidal-uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "7" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "3.49" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.732" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.737" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.744" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.012" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Orthorhombic mm2 pyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Calumetite", "title": "Wikipedia: Calumetite" } ], "names": [ "Calumetite" ], "chemicalFormula": "Cu(OH,Cl)2.2(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Halide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "03.DA.40" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "2" } ], "name": "Mohs scale hardness" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Cervandonite", "title": "Wikipedia: Cervandonite" } ], "names": [ "Cervandonite" ], "chemicalFormula": "(Ce,Nd,La)(Fe$^{3+}$,Fe$^{2+}$,Ti,Al)$_{3}$O$_{2}$(Si$_{2}$O$_{7}$)(As$^{3+}$O$_{3}$)(OH)", "properties": [ { "scalars": [ { "value": "Silicate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "09.BE.09.2" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Black" } ], "name": "Color" }, { "scalars": [ { "value": "Aggregates and rosettes of tabular crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic-Domatic, H-M Symbol (m)" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{001} Indistinct" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "Adamantine" } ], "name": "Luster" }, { "scalars": [ { "value": "Brownish black" } ], "name": "Streak" }, { "scalars": [ { "value": "4.9" } ], "conditions": [ { "scalars": [ { "value": "calculated" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.990" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "2.000" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "Yellowish, reddish brown-black" } ], "name": "Pleochroism" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Ashburtonite", "title": "Wikipedia: Ashburtonite" } ], "names": [ "Ashburtonite" ], "chemicalFormula": "HPb$_{4}$Cu$_{4}$Si$_{4}$O$_{12}$(HCO$_{3}$)$_{4}$(OH)$_{4}$Cl", "properties": [ { "scalars": [ { "value": "Cyclosilicates" } ], "name": "Category" }, { "scalars": [ { "value": "14.23" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "6.1" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "09.CF.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Blue" } ], "name": "Color" }, { "scalars": [ { "value": "Prismatic, needle like in clusters" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Tetragonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Vitreous-adamantine" } ], "name": "Luster" }, { "scalars": [ { "value": "1.786" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.800" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.0140" } ], "name": "Birefringence" }, { "scalars": [ { "value": "light blue" } ], "name": "Streak" }, { "scalars": [ { "value": "Greater than 4.07" }, { "value": "4.69" } ], "conditions": [ { "scalars": [ { "value": "calculated" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "I 4/m" } ], "name": "Tetragonal dipyramidal H-M Symbol (4/m) Space Group" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Cleusonite", "title": "Wikipedia: Cleusonite" } ], "names": [ "Cleusonite" ], "chemicalFormula": "(Pb,Sr)(U$^{4+}$,U$^{6+}$)(Fe$^{2+}$,Zn)(Ti,Fe$^{2+}$,Fe$^{3+}$)$_{18}$(O,OH)$_{38}$", "properties": [ { "scalars": [ { "value": "Oxide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "04.CC.40" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "10.385(2)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "20.900(7)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "Black" } ], "name": "Color" }, { "scalars": [ { "value": "Multiple rhombohedra and hexagonal prisms, metamict" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "fine twinning" } ], "name": "Twinning" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "6-7" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Sub metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Black" } ], "name": "Streak" }, { "scalars": [ { "value": "4.74" }, { "value": "~5.15" } ], "conditions": [ { "scalars": [ { "value": "synthetic" }, { "value": "calculated" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Trigonal ($\\bar{3}$) pyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Beraunite", "title": "Wikipedia: Beraunite" } ], "names": [ "Beraunite" ], "chemicalFormula": "Fe$^{2+}$ Fe$^{3+}$$_{5}$(OH)$_{5}$(PO$_{4}$)$_{4}$.4H$_{2}$O", "properties": [ { "scalars": [ { "value": "Phosphate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.DC.27" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "20.953(8)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.171(1)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "19.266(4)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "93.34" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Dull greenish-greenish brown when fresh, may be color banded, reddish brown-hyacinth-red, blood-red on exposure" } ], "name": "Color" }, { "scalars": [ { "value": "Tabular crystals common, may be in coarse radially fibrous aggregates," } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic-Prismatic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "On {100}, may be interpenetrant" } ], "name": "Twinning" }, { "scalars": [ { "value": "On {100}, good" } ], "name": "Cleavage" }, { "scalars": [ { "value": "3-4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, pearly on cleavages, resinous on fractures" } ], "name": "Luster" }, { "scalars": [ { "value": "Olive-drab when fresh, yellow, brownish yellow on exposure" } ], "name": "Streak" }, { "scalars": [ { "value": "2.8-3.08" }, { "value": "2.894" } ], "conditions": [ { "scalars": [ { "value": "measured" }, { "value": "calculated" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.775" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.786" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.815" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.040" } ], "name": "Birefringence" }, { "scalars": [ { "value": "X=pale flesh-pink, yellow, blue-green, Y=pale flesh-pink, yellow, pale olive-green, Z=carnelian-red, reddish brown, olive-green." } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Monoclinic 2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Bystrite", "title": "Wikipedia: Bystrite" } ], "names": [ "Bystrite" ], "chemicalFormula": "(Na,K)$_{7}$Ca(Si$_{6}$Al$_{6}$)O$_{24}$S$_{4.5}$.(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Tec-silicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.FB.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "76.02.05.02" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Tabular-irregular grains and inclusions" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Hexagonal-Ditrigonal Pyramidal H-M Symbol (3m)" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{10$\\bar{1}$0} Good" } ], "name": "Cleavage" }, { "scalars": [ { "value": "5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "light yellow" } ], "name": "Streak" }, { "scalars": [ { "value": "2.43" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.584" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.660" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.076" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Deep yellow-colorless" } ], "name": "Pleochroism" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Bonaccordite", "title": "Wikipedia: Bonaccordite" } ], "names": [ "Bonaccordite" ], "chemicalFormula": "Ni$_{2}$FeBO$_{5}$", "properties": [ { "scalars": [ { "value": "Borates" } ], "name": "Category" }, { "scalars": [ { "value": "06.AB.30" } ], "name": "Strunz classification" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Campigliaite", "title": "Wikipedia: Campigliaite" } ], "names": [ "Campigliaite" ], "chemicalFormula": "Cu$_{4}$Mn(SO$_{4}$)$_{2}$(OH)$_{6}$.4H$_{2}$O", "properties": [ { "scalars": [ { "value": "Copper oxysalt mineral" } ], "name": "Category" }, { "scalars": [ { "value": "07.DD.30" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "21.7" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "6.09" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "11.24" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "100.3" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Pale blue-pale greenish blue" } ], "name": "Color" }, { "scalars": [ { "value": "Typically as clusters or tufts of elongated or bladed crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Polysynthetic, with {100} as twin plane, ubiqui-us" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {100}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.589" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.645" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.659" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.070" } ], "name": "Birefringence" }, { "scalars": [ { "value": "3.0" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "C 2" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic sphenoidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Barbertonite", "title": "Wikipedia: Barbertonite" } ], "names": [ "Barbertonite" ], "chemicalFormula": "Mg$_{6}$(Cr,Al)$_{2}$[(OH)$_{16}$CO$_{3}$].4H$_{2}$O", "properties": [ { "scalars": [ { "value": "Carbonate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "05.DA.45" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "6.17" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "15.52" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "1" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Intense violet-rose-pink" } ], "name": "Color" }, { "scalars": [ { "value": "flattened plates, in fibrous matted masses, and as cross-fiber veinlets" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Hexagonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {0001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Flexible but not elastic" } ], "name": "Tenacity" }, { "scalars": [ { "value": "1.5-2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Waxy, pearly" } ], "name": "Luster" }, { "scalars": [ { "value": "Very pale violet-white" } ], "name": "Streak" }, { "scalars": [ { "value": "2.05-2.15" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.557" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.529" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.028" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Weak, O=dark rose-pink-violet, E=pale rose-pink-violet" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Hexagonal dihexagonal dipyramidal (6/m 2/m 2/m)" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Athabascaite", "title": "Wikipedia: Athabascaite" } ], "names": [ "Athabascaite" ], "chemicalFormula": "Cu$_{5}$Se$_{4}$", "properties": [ { "scalars": [ { "value": "Selenide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.BA.15d" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "8.227" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "11.982" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.441" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Light grey, bluish-gray-white" } ], "name": "Color" }, { "scalars": [ { "value": "As anhedral inclusions and lath shaped crystals, also massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Distinct, pale gray-blue-gray" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "6.59" } ], "conditions": [ { "scalars": [ { "value": "calculated" } ], "name": "Note" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Bukovite", "title": "Wikipedia: Bukovite" } ], "names": [ "Bukovite" ], "chemicalFormula": "Tl$_{2}$(CuFe)$_{4}$Se$_{4}$", "properties": [ { "scalars": [ { "value": "Selenide-Bukovite group" } ], "name": "Category" }, { "scalars": [ { "value": "02.BD.30" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "2.5.5.2" } ], "name": "Dana classification" }, { "scalars": [ { "value": "216.58" } ], "units": "$\\AA^3$", "name": "Unit cell volume" }, { "scalars": [ { "value": "Grayish-brown" } ], "name": "Color" }, { "scalars": [ { "value": "Tetragonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Distinct/Good: Good on {001} imperfect on {100}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "7.40" } ], "conditions": [ { "scalars": [ { "value": "calculated" } ], "name": "Note" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Cesanite", "title": "Wikipedia: Cesanite" } ], "names": [ "Cesanite" ], "chemicalFormula": "Ca$_{2}$Na$_{3}$[(OH)(SO$_{4}$)$_{3}$]", "properties": [ { "scalars": [ { "value": "Sulfate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "07.BD.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "9.44" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "6.9" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless-white" } ], "name": "Color" }, { "scalars": [ { "value": "Massive granular, rarely as striated subhedral prismatic crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Hexagonal $\\bar{6}$" } ], "name": "Crystal system" }, { "scalars": [ { "value": "On {10$\\bar{1}$0}" } ], "name": "Twinning" }, { "scalars": [ { "value": "On {0001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "2-3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Greasy-silky in aggregates" } ], "name": "Luster" }, { "scalars": [ { "value": "1.570" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.564" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "2.96-3.02" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Slight in water" } ], "name": "Solubility" }, { "scalars": [ { "value": "Hexagonal $\\bar{6}$ trigonal dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Bergenite", "title": "Wikipedia: Bergenite" } ], "names": [ "Bergenite" ], "chemicalFormula": "Ca$_{2}$Ba$_{4}$[(UO$_{2}$)$_{3}$O$_{2}$(PO$_{4}$)$_{2}$]$_{3}$.16(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Uranyl phosphate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "08.EC.40" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Yellow-greenish yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Acicular, tabular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic-Prismatic H-M Symbol (2/m) Space Group: P 2$_{1}$/c" } ], "name": "Crystal system" }, { "scalars": [ { "value": "2-3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "1.660" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.700-1.710" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.722" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.062" } ], "name": "Birefringence" }, { "scalars": [ { "value": "yellow white" } ], "name": "Streak" }, { "scalars": [ { "value": "4.1" } ], "name": "Density" }, { "scalars": [ { "value": "radioactive" } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Canavesite", "title": "Wikipedia: Canavesite" } ], "names": [ "Canavesite" ], "chemicalFormula": "Mg$_{2}$(HBO$_{3}$)(CO$_{3}$).5H$_{2}$O", "properties": [ { "scalars": [ { "value": "Carboborate Mineral" } ], "name": "Category" }, { "scalars": [ { "value": "06.HA.50" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "258.51" } ], "units": "gm", "name": "Molecular weight" }, { "scalars": [ { "value": "milky white-colorless" } ], "name": "Color" }, { "scalars": [ { "value": "Acicular-Occurs as needle-like crystal and Rosette-Bundled tabular aggregates resembling rose flower petals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "on {h01}, on one or more sets" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Monoclinic 2/m" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Slightly flexible" } ], "name": "Tenacity" }, { "scalars": [ { "value": "vitreous, silky in aggregates" } ], "name": "Luster" }, { "scalars": [ { "value": "white" } ], "name": "Streak" }, { "scalars": [ { "value": "1.8" } ], "conditions": [ { "scalars": [ { "value": "g/cm$^{-3}$" } ], "name": "Note" } ], "name": "Density" }, { "scalars": [ { "value": "Effervesces at room temp. with HCL" } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Chaidamuite", "title": "Wikipedia: Chaidamuite" } ], "names": [ "Chaidamuite" ], "chemicalFormula": "ZnFe$^{3+}$(SO$_{4}$)$_{2}$(OH).4(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Sulfate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "07.DC.30" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "7.309(2)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "7.202(2)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "9.691(3)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "89.64(3)" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\alpha$)" }, { "scalars": [ { "value": "105.89(1)" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "91.11(1)" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\gamma$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Brown-yellow-brown" } ], "name": "Color" }, { "scalars": [ { "value": "Tabular pseudocubic crystals and granular masses" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Triclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "On {001} and {100}, perfect." } ], "name": "Cleavage" }, { "scalars": [ { "value": "conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "2.5-3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.632" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.640" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.688" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.056" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Strong: X=pale yellow, colorless, Y=pale yellow, z=Brownish yellow" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Pale yellow" } ], "name": "Streak" }, { "scalars": [ { "value": "1 Space group: P1" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "Triclinic pedial" } ], "name": "Symmetry" }, { "scalars": [ { "value": "pseudomonoclinic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Cyrilovite", "title": "Wikipedia: Cyrilovite" } ], "names": [ "Cyrilovite" ], "chemicalFormula": "NaFe$^{3+}$$_{3}$(PO$_{4}$)$_{2}$(OH)$_{4}$.2(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Phosphate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "08.DL.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "42.07.08.01" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Bright yellow, honey-yellow, orange-brownish yellow, brown" } ], "name": "Color" }, { "scalars": [ { "value": "Massive, granular, pseudo cubic, radiating-botryoidal aggregates and crusts" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Tetragonal-Trapezohedral H-M Symbol (422) Space Group: P 4$_{1}$2$_{1}$21,P 4$_{3}$2$_{1}$21" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "Yellow" } ], "name": "Streak" }, { "scalars": [ { "value": "3.081-3.096" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.802-1.805" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.769-1.775" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.033" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Weak" } ], "name": "Pleochroism" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Fluellite", "title": "Wikipedia: Fluellite" } ], "names": [ "Fluellite" ], "chemicalFormula": "Al$_{2}$(PO$_{4}$)F$_{2}$(OH).7H$_{2}$O", "properties": [ { "scalars": [ { "value": "Phosphate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.DE.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Colorless, white, pale yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Dipyramidal crystals commonly in aggregates, powdery, massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: F ddd" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Indistinct on {001} and {111}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "2.18" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.473-1.490" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.490-1.496" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.506-1.511" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.033" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Fluorescent, Long UV=creamy white" } ], "name": "fluorescence" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Clearcreekite", "title": "Wikipedia: Clearcreekite" } ], "names": [ "Clearcreekite" ], "chemicalFormula": "Hg$^{1+}$$_{3}$CO$_{3}$(OH).2H$_{2}$O", "properties": [ { "scalars": [ { "value": "Carbonate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "05.DC.30" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "pale greenish yellow" } ], "name": "Color" }, { "scalars": [ { "value": "tabular, subhedral" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "monoclinic, 2/m" } ], "name": "Crystal system" }, { "scalars": [ { "value": "good on {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "probably 2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "[2.06-2.12]" } ], "name": "Refractive index (n)" }, { "scalars": [ { "value": "pale greenish yellow" } ], "name": "Streak" }, { "scalars": [ { "value": "6.96" } ], "conditions": [ { "scalars": [ { "value": "g/cm$^{3}$" } ], "name": "Note" } ], "name": "Density" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/B\u00edlinite", "title": "Wikipedia: B\u00edlinite" } ], "names": [ "B\u00edlinite" ], "chemicalFormula": "Fe$^{2+}$Fe$^{3+}$$_{2}$(SO$_{4}$).22H$_{2}$O", "properties": [ { "scalars": [ { "value": "Sulfate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "07.CB.85" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "29.07.03.05" } ], "name": "Dana classification" }, { "scalars": [ { "value": "White-yellowish" } ], "name": "Color" }, { "scalars": [ { "value": "Fibrous in radial aggregates" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic-prismatic (2/m)" } ], "name": "Crystal system" }, { "scalars": [ { "value": "2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-silky" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "1.87" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.480-1.482" } ], "name": "Refractive index (n$\\alpha$)" }, { "scalars": [ { "value": "1.500" } ], "name": "Refractive index (n$\\beta$)" }, { "scalars": [ { "value": "1.489-1.493" } ], "name": "Refractive index (n$\\gamma$)" }, { "scalars": [ { "value": "0.009-0.011" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Soluble in water" } ], "name": "Solubility" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Macaulayite", "title": "Wikipedia: Macaulayite" } ], "names": [ "Macaulayite" ], "chemicalFormula": "(Fe$^{3+}$, Al)$_{24}$Si$_{4}$O$_{43}$(OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Phyllosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.EC.65" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "2116.93" } ], "units": "gm", "name": "Molecular weight" }, { "scalars": [ { "value": "red" } ], "name": "Color" }, { "scalars": [ { "value": "Earthy-Dull, clay-like texture with no visible crystalline affinities" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "earthy" } ], "name": "Luster" }, { "scalars": [ { "value": "light red" } ], "name": "Streak" }, { "scalars": [ { "value": "4.41" } ], "name": "Density" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Chamosite", "title": "Wikipedia: Chamosite" } ], "names": [ "Chamosite" ], "chemicalFormula": "(Fe$^{2+}$,Mg)$_{5}$Al(AlSi$_{3}$O$_{10}$)(OH)$_{8}$", "properties": [ { "scalars": [ { "value": "Phyllosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.EC.55" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.37" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "9.3" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "14.22" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "Green, grey-green, black" } ], "name": "Color" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "3" } ], "name": "Mohs scale hardness" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Coloradoite", "title": "Wikipedia: Coloradoite" } ], "names": [ "Coloradoite" ], "chemicalFormula": "HgTe", "properties": [ { "scalars": [ { "value": "Telluride mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.CB.05a" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "6.453" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Iron-black inclining-gray" } ], "name": "Color" }, { "scalars": [ { "value": "Massive, granular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Cubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Uneven-subconchordial" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Bright metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Black" } ], "name": "Streak" }, { "scalars": [ { "value": "8.10" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "$\\bar{4}$3m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "F$\\bar{4}$3m" } ], "name": "Space group" }, { "scalars": [ { "value": "Isometric hextetrahedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Johannite", "title": "Wikipedia: Johannite" } ], "names": [ "Johannite" ], "chemicalFormula": "Cu[UO$_{2}$(OH)SO$_{4}$]$_{2}$.8H$_{2}$O", "properties": [ { "scalars": [ { "value": "Sulfate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "7.EB.05" } ], "conditions": [ { "scalars": [ { "value": "8th ed: VI/D.21-10" } ], "name": "Note" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "31.8.2.1" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Emerald-green, apple-green" } ], "name": "Color" }, { "scalars": [ { "value": "Triclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Simple and repeated lamellar twinning" } ], "name": "Twinning" }, { "scalars": [ { "value": "good on {100}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "2-2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "Pale green" } ], "name": "Streak" }, { "scalars": [ { "value": "3.32" } ], "name": "Density" }, { "scalars": [ { "value": "1.572-1.577" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.592-1.597" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.612-1.616" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.040" } ], "name": "Birefringence" }, { "scalars": [ { "value": "strong: x=colorless, y=pale yellow, z=greenish yellow or canary-yellow" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "P$\\bar{1}$" } ], "name": "Triclinic-pinacoidal H-M Symbol ($\\bar{1}$) Space Group" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/N\u00e9pouite", "title": "Wikipedia: N\u00e9pouite" } ], "names": [ "N\u00e9pouite" ], "chemicalFormula": "Ni$_{3}$(Si$_{2}$O$_{5}$)(OH)$_{4}$", "properties": [ { "scalars": [ { "value": "Phyllosilicates, Kaolinite-serpentine group" } ], "name": "Category" }, { "scalars": [ { "value": "09.ED.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "71.1.2b.3" } ], "name": "Dana classification" }, { "scalars": [ { "value": "generally massive, also fibrous and microscopic pseudohexagonal platy crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic Pyramidal H-M Symbol mm2" } ], "name": "Crystal system" }, { "scalars": [ { "value": "perfect on {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "2-2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "earthy-waxy, also pearly" } ], "name": "Luster" }, { "scalars": [ { "value": "greenish white" } ], "name": "Streak" }, { "scalars": [ { "value": "3.18-3.24" } ], "conditions": [ { "scalars": [ { "value": "''measured''" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.600-1.630" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.635-1.650" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.035" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Weak. X=green-yellow green Z=yellow-green" } ], "name": "Pleochroism" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Wodginite", "title": "Wikipedia: Wodginite" } ], "names": [ "Wodginite" ], "chemicalFormula": "Mn$^{2+}$(Sn,Ta)Ta$_{2}$O$_{8}$", "properties": [ { "scalars": [ { "value": "Oxide-Tantalate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "04.DB.40" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "08.01.08.01" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Reddish brown, dark brown-black" } ], "name": "Color" }, { "scalars": [ { "value": "Flattened dipyramidal-prismatic crystals in radiating groups, granular, massive." } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic-Prismatic H-M Symbol (2/m)" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Very common as penetration twins" } ], "name": "Twinning" }, { "scalars": [ { "value": "none" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Irregular" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Sub-metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Brown" } ], "name": "Streak" }, { "scalars": [ { "value": "7.19-7.36" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Getchellite", "title": "Wikipedia: Getchellite" } ], "names": [ "Getchellite" ], "chemicalFormula": "AsSbS$_{3}$", "properties": [ { "scalars": [ { "value": "Sulfide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "293.81" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "02.FA.35" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "2.11.1.2" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Dark red, sometimes with a purple-green iridescent tarnish" } ], "name": "Color" }, { "scalars": [ { "value": "Subhedral crystals and massive with a platy texture" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic 2/m prismatic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Simple and polysynthetic twins with the twin plane and composition plane parallel-{001}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Splintery" } ], "name": "Fracture" }, { "scalars": [ { "value": "Sectile, cleavage flakes are flexible and inelastic" } ], "name": "Tenacity" }, { "scalars": [ { "value": "1.5-2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-pearly on cleavage surfaces, otherwise resinous" } ], "name": "Luster" }, { "scalars": [ { "value": "2.720." } ], "name": "Refractive index (n)" }, { "scalars": [ { "value": "Dispersion" } ], "name": "Refractive index" }, { "scalars": [ { "value": "r>v" } ], "name": "Refractive index" }, { "scalars": [ { "value": "strong" } ], "name": "Refractive index" }, { "scalars": [ { "value": "Orange red" } ], "name": "Streak" }, { "scalars": [ { "value": "3.92 4.0" } ], "conditions": [ { "scalars": [ { "value": "observed" }, { "value": "calculated" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "340" } ], "units": "$^{\\circ}$C-355 $^{\\circ}$C", "name": "Melting point" }, { "scalars": [ { "value": "Not radioactive" } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Bustamite", "title": "Wikipedia: Bustamite" } ], "names": [ "Bustamite" ], "chemicalFormula": "CaMn$^{2+}$Si$_{2}$O$_{6}$", "properties": [ { "scalars": [ { "value": "Inosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.DG.05, 8/F.18.40" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "65.2.1.2" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Light pink-brownish red Pink color fades on exposure-sunlight" } ], "name": "Color" }, { "scalars": [ { "value": "Usually tabular or equant-prismatic, commonly massive, often compact and fibrous" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Triclinic $\\bar{1}$ pinacoidal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Rare. Simple twins with (110) as the composition plane" } ], "name": "Twinning" }, { "scalars": [ { "value": "{100} perfect, {110} and {1$\\bar{1}$0} good, {010} poor" } ], "name": "Cleavage" }, { "scalars": [ { "value": "5.5-6.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.640-1.695" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.651-1.708" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.653-1.710" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.013-0.015, Dispersion r2" } ], "name": "Refractive index" }, { "scalars": [ { "value": "Dark brown" } ], "name": "Streak" }, { "scalars": [ { "value": "9.867" } ], "conditions": [ { "scalars": [ { "value": "calculated" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Non-fluorescent, nonmagnetic" } ], "name": "Other" }, { "scalars": [ { "value": "2/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "Pbcn" } ], "name": "Space group" }, { "scalars": [ { "value": "Orthorhombic dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Plattnerite", "title": "Wikipedia: Plattnerite" } ], "names": [ "Plattnerite" ], "chemicalFormula": "PbO$_{2}$", "properties": [ { "scalars": [ { "value": "Oxide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "4.95" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "3.38" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "04.DB.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Dark brown, iron-black" } ], "name": "Color" }, { "scalars": [ { "value": "Prismatic crystals, may be nodular or botryoidal, fibrous and concentrically zoned, massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Tetragonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Contact and penetration twinning on {011}, rarely polysynthetic" } ], "name": "Twinning" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Sub-conchoidal, fibrous" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Bright metallic-adamantine" } ], "name": "Luster" }, { "scalars": [ { "value": "2.35" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "2.25" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.1" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Chestnut brown" } ], "name": "Streak" }, { "scalars": [ { "value": "8.5-9.63" }, { "value": "" } ], "conditions": [ { "scalars": [ { "value": "average=9.06" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Non-fluorescent, nonmagnetic" } ], "name": "Other" }, { "scalars": [ { "value": "4/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P4$_{2}$/mnm" } ], "name": "Space group" }, { "scalars": [ { "value": "Tetragonal ditetragonal dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Beudantite", "title": "Wikipedia: Beudantite" } ], "names": [ "Beudantite" ], "chemicalFormula": "PbFe$_{3}$(OH)$_{6}$SO$_{4}$AsO$_{4}$", "properties": [ { "scalars": [ { "value": "Arsenate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.BL.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "43.4.1.1" } ], "name": "Dana classification" }, { "scalars": [ { "value": "7.32" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "17.02" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "3" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "black, dark green, brown, yellowish, red, greenish yellow, brown" } ], "name": "Color" }, { "scalars": [ { "value": "tabular, acute rhombohedral, pseudo-cubic, pseudo-cuboctahedral" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal Hexagonal Scalenohedral" } ], "name": "Crystal system" }, { "scalars": [ { "value": "distinct, good on {0001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "3.5-4.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "vitreous, resinous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.957" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.943" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.014" } ], "name": "Birefringence" }, { "scalars": [ { "value": "visible" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "grayish yellow-green" } ], "name": "Streak" }, { "scalars": [ { "value": "4.48" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Soluble in HCl" } ], "name": "Other" }, { "scalars": [ { "value": "Trigonal $\\bar{3}$ 2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Corkite", "title": "Wikipedia: Corkite" } ], "names": [ "Corkite" ], "chemicalFormula": "PbFe$_{3}$[(OH)$_{6}$:SO$_{4}$:PO$_{4}$]", "properties": [ { "scalars": [ { "value": "Phosphate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "667.82" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "08.BL.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "43.4.1.2" } ], "name": "Dana classification" }, { "scalars": [ { "value": "7.3065(5)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "16.897(2)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "781.2" } ], "units": "$\\AA^3$", "name": "Unit cell volume" }, { "scalars": [ { "value": "3" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Brown-light yellowish brown, pale yellow, yellowish green-dark green" } ], "name": "Color" }, { "scalars": [ { "value": "Crystals pseudocubic rhombohedral with prominent {10$\\bar{1}$1}. Commonly in crusts and massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {0001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "3.5-4.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, resinous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.930" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.930" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "1.93-1.96" } ], "name": "Refractive index (n)" }, { "scalars": [ { "value": "0.000" } ], "name": "Birefringence" }, { "scalars": [ { "value": "4.295" }, { "value": "4.31" } ], "conditions": [ { "scalars": [ { "value": "measured" }, { "value": "calculated" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Readily soluble in warm HCl" } ], "name": "Other" }, { "scalars": [ { "value": "Trigonal hemimorphic ($\\bar{3}$ 2/m)" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Dzhalindite", "title": "Wikipedia: Dzhalindite" } ], "names": [ "Dzhalindite" ], "chemicalFormula": "In(OH)$_{3}$", "properties": [ { "scalars": [ { "value": "Oxide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "7.9743(6)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "04.FC.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Yellow-brown, light yellow in transmitted light, dark gray in reflected light" } ], "name": "Color" }, { "scalars": [ { "value": "Massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Cubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "4-4.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "1.725" } ], "name": "Refractive index (n)" }, { "scalars": [ { "value": "4.38" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2/m$\\bar{3}$" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "I m3" } ], "name": "Space group" }, { "scalars": [ { "value": "Isometric diploidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Coccinite", "title": "Wikipedia: Coccinite" } ], "names": [ "Coccinite" ], "chemicalFormula": "HgI$_{2}$", "properties": [ { "scalars": [ { "value": "Halide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "3.AB.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "4.376" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "12.41" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "1" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Tetragonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Good on {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Orange" } ], "name": "Streak" }, { "scalars": [ { "value": "3.17" } ], "conditions": [ { "scalars": [ { "value": "calculated" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.684" } ], "name": "Refractive index" }, { "scalars": [ { "value": "(avg)" } ], "name": "Refractive index" }, { "scalars": [ { "value": "0.193" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Volatile at room temperature" } ], "name": "Other" }, { "scalars": [ { "value": "4/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 41/nmc" } ], "name": "Space group" }, { "scalars": [ { "value": "Tetragonal ditetragonal dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Lulzacite", "title": "Wikipedia: Lulzacite" } ], "names": [ "Lulzacite" ], "chemicalFormula": "Sr$_{2}$Fe$^{2+}$(Fe$^{2+}$,Mg)$_{2}$Al$_{4}$(PO$_{4}$)$_{4}$(OH)$_{10}$", "properties": [ { "scalars": [ { "value": "Phosphate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.BK.25" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Grayish-green-yellowish-green" } ], "name": "Color" }, { "scalars": [ { "value": "Anhedral aggregates, rarely small euhedral crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Triclinic (pinacoidal)" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "5.5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.654" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.674" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.684" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.030" } ], "name": "Birefringence" }, { "scalars": [ { "value": "3.55" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Stillwaterite", "title": "Wikipedia: Stillwaterite" } ], "names": [ "Stillwaterite" ], "chemicalFormula": "Pd$_{8}$As$_{3}$", "properties": [ { "scalars": [ { "value": "Arsenide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "7.399(4) c=10.311(15) V 491.58 $^{3}$" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "1076.12" } ], "units": "g/mol", "name": "Molecular weight" }, { "scalars": [ { "value": "02.AC.10a" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "light creamy gray" } ], "name": "Color" }, { "scalars": [ { "value": "microscopic crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "hexagonal (or trigonal-rhombohedral)" } ], "name": "Crystal system" }, { "scalars": [ { "value": "4.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "no" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "10.96" } ], "conditions": [ { "scalars": [ { "value": "g/cm$^{3}$" } ], "name": "Note" } ], "name": "Density" }, { "scalars": [ { "value": "non-radioactive" } ], "name": "Other" }, { "scalars": [ { "value": "P3 or P$\\bar{3}$" } ], "name": "Space group" }, { "scalars": [ { "value": "hexagonal" } ], "name": "Symmetry" }, { "scalars": [ { "value": "3-fold or 6-fold rotation axis" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Edenite", "title": "Wikipedia: Edenite" } ], "names": [ "Edenite" ], "chemicalFormula": "NaCa$_{2}$Mg$_{5}$(Si$_{7}$Al)O$_{22}$(OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Inosilicate, amphibole" } ], "name": "Category" }, { "scalars": [ { "value": "9.83" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "17.95" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.3" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "105.18" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "834.25" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "White-gray, pale-dark green, also brown and pale pinkish-brown" } ], "name": "Color" }, { "scalars": [ { "value": "Prismatic crystals, fibrous, as reaction rims on pyroxenes" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Simple or multiple parallel-{010}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Good on (110)" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.606-1.649" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.617-1.660" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.631-1.672" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.025" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Distinct, greens, blue-greens, and yellow-browns" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.05-3.37" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "C 2/m" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Apachite", "title": "Wikipedia: Apachite" } ], "names": [ "Apachite" ], "chemicalFormula": "Cu$_{9}$Si$_{10}$O$_{29}$.11(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Silicate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "09.HE.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "12.89" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "6.055" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "19.11" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "90.42" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "1" } ], "name": "Unit cell (V)" }, { "scalars": [ { "value": "490.24" } ], "units": "$\\AA^3$", "name": "Unit cell volume" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "1514.92" } ], "units": "gm", "name": "Molecular weight" }, { "scalars": [ { "value": "light blue" } ], "name": "Color" }, { "scalars": [ { "value": "spherical, rounded aggregates" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "nonmetallic, silky" } ], "name": "Luster" }, { "scalars": [ { "value": "1.610" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.650" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.650" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.040" } ], "name": "Birefringence" }, { "scalars": [ { "value": "light blue" } ], "name": "Streak" }, { "scalars": [ { "value": "3.37" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "monoclinic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Marrite", "title": "Wikipedia: Marrite" } ], "names": [ "Marrite" ], "chemicalFormula": "PbAgAsS$_{3}$", "properties": [ { "scalars": [ { "value": "Sulfosalt mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.JB.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "7.29" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "12.68" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.99" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "91.22" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "553.57" } ], "units": "$\\AA^3$", "name": "Unit cell volume" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "486.19" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "Lead gray, steel gray" } ], "name": "Color" }, { "scalars": [ { "value": "Tabular or striated crystals" } ], "name": "Crystal 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} ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Metazeunerite", "title": "Wikipedia: Metazeunerite" } ], "names": [ "Metazeunerite" ], "chemicalFormula": "Cu(UO$_{2}$)$_{2}$(AsO$_{4}$)$_{2}$.8H$_{2}$O", "properties": [ { "scalars": [ { "value": "Phosphate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.EB.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "7.1094" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "17.416" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Varies from pale-green" } ], "name": "Color" }, { "scalars": [ { "value": "Tabular rectangular crystals with two pinacoid faces, foliated or micaceous aggregates" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Tetragonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Merohedrally twinned" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {001}, distinct on {010}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2-2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-dull" } ], "name": "Luster" }, { "scalars": [ { "value": "1.643-1.651" } ], "name": "Refractive index (n$_{w}$)" }, { "scalars": [ { "value": "1.623-1.635" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": ".020" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Weak" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Pale green" } ], "name": "Streak" }, { "scalars": [ { "value": "3.87" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Radioactive" } ], "name": "Other" }, { "scalars": [ { "value": "4/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P42/n" } ], "name": "Space group" }, { "scalars": [ { "value": "Tetragonal dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Walfordite", "title": "Wikipedia: Walfordite" } ], "names": [ "Walfordite" ], "chemicalFormula": "Fe$^{3+}$,Te$^{6+}$Te$^{4+}$$_{3}$O$_{8}$", "properties": [ { "scalars": [ { "value": "Tellurite minerals" } ], "name": "Category" }, { "scalars": [ { "value": "04.JK.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "11.011" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Microscopic cubic crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Isometric" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "Adamantine" } ], "name": "Luster" }, { "scalars": [ { "value": "Orange-yellow" } ], "name": "Streak" }, { "scalars": [ { "value": "5.841" } ], "conditions": [ { "scalars": [ { "value": "calculated" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.23" } ], "name": "Refractive index (n)" }, { "scalars": [ { "value": "I2" } ], "name": "Space group" }, { "scalars": [ { "value": "Isometric" } ], "name": "Symmetry" }, { "scalars": [ { "value": "I a3" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Apophyllite-(KF)", "title": "Wikipedia: Apophyllite-(KF)" } ], "names": [ "Apophyllite-(KF)" ], "chemicalFormula": "KCa$_{4}$Si$_{8}$O$_{20}$(F,OH).8(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Phyllosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.EA.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "8.963(2)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "15.804(2)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless, white, pink, pale, yellow, green, in thin section, colorless" } ], "name": "Color" }, { "scalars": [ { "value": "Tabular-prismatic crystals, may be pseudocubic" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Rare on {111}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Tetragonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {001}, imperfect on {110}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "4.5-5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, pearly on {001}" } ], "name": "Luster" }, { "scalars": [ { "value": "1.530-1.536" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.532-1.538" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.002" } ], "name": "Birefringence" }, { "scalars": [ { "value": "2.33-2.37" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "4/mmm 4/m 2/m 2/m-ditetragonal dipyramidal" } ], "name": "H-M symbol" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Phosphuranylite", "title": "Wikipedia: Phosphuranylite" } ], "names": [ "Phosphuranylite" ], "chemicalFormula": "KCa(H$_{3}$O)$_{3}$(UO$_{2}$)$_{7}$(PO$_{4}$)$_{4}$O$_{4}$.8(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Phosphate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.EC.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Jonesite", "title": "Wikipedia: Jonesite" } ], "names": [ "Jonesite" ], "chemicalFormula": "Ba$_{4}$(K,Na)$_{2}$[Ti$_{4}$Al$_{2}$Si$_{10}$O$_{36}$].6H$_{2}$O", "properties": [ { "scalars": [ { "value": "Inosilicates" } ], "name": "Category" }, { "scalars": [ { "value": "Formula units per unit cell: 4" } ], "name": "Unit cell (Formula units per unit cell: )" }, { "scalars": [ { "value": "914.93" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "Colorless" } ], "name": "Color" }, { "scalars": [ { "value": "Bladed-Aggregation is thin blade-like crystals and Tabular-Dimensions thin in one direction" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{010} Distinct" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Irregular" } ], "name": "Fracture" }, { "scalars": [ { "value": "3-4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "Index:" } ], "name": "Refractive index" }, { "scalars": [ { "value": "1.64-1.68" } ], "name": "Refractive index" }, { "scalars": [ { "value": "0.041" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Colorless" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.21 g/cm$^{3}$" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "3.25" } ], "conditions": [ { "scalars": [ { "value": "g/cm$^{3}$" } ], "name": "Note" } ], "name": "Density" }, { "scalars": [ { "value": "Has medium relief and weak dispersion. Has fluorescent luminescence & white streak" } ], "name": "Other" }, { "scalars": [ { "value": "2 2 2 Hemihedral Orthorhombic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Roaldite", "title": "Wikipedia: Roaldite" } ], "names": [ "Roaldite" ], "chemicalFormula": "(Fe,Ni)$_{4}$N", "properties": [ { "scalars": [ { "value": "01.BC.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "1.1.18.2" } ], "name": "Dana classification" }, { "scalars": [ { "value": "3.79" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "1" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Platelets in kamacite" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Cubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "5.5-6.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "7.21" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "$\\bar{4}$ 3m" } ], "name": "H-M symbol" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Raspite", "title": "Wikipedia: Raspite" } ], "names": [ "Raspite" ], "chemicalFormula": "PbWO$_{4}$", "properties": [ { "scalars": [ { "value": "Oxide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "04.DG.20" } ], "name": "Strunz classification" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Goldmanite", "title": "Wikipedia: Goldmanite" } ], "names": [ "Goldmanite" ], "chemicalFormula": "Ca$_{3}$(V$^{3+}$,Al,Fe$^{3+}$)$_{2}$(SiO$_{4}$)$_{3}$", "properties": [ { "scalars": [ { "value": "Nesosilicates" } ], "name": "Category" }, { "scalars": [ { "value": "09.AD.25" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "51.4.3b.4" } ], "name": "Dana classification" }, { "scalars": [ { "value": "12.01" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "1" } ], "name": "Unit cell (V)" }, { "scalars": [ { "value": "732.32" } ], "units": "$\\AA^3$", "name": "Unit cell volume" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Green, brownish-green" } ], "name": "Color" }, { "scalars": [ { "value": "Dodecahedral crystals and anhedral grains" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Isometric" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "6-7" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.74-3.77" } ], "conditions": [ { "scalars": [ { "value": "measured" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.821" } ], "name": "Refractive index (n)" }, { "scalars": [ { "value": "Cr, Mn, Mg" } ], "name": "impurities" }, { "scalars": [ { "value": "4/m $\\bar{3}$ 2/m" } ], "name": "H-M symbol" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Hagendorfite", "title": "Wikipedia: Hagendorfite" } ], "names": [ "Hagendorfite" ], "chemicalFormula": "(Na,Ca)MnFe$_{2}$(PO$_{4}$)$_{3}$", "properties": [ { "scalars": [ { "value": "Iron phosphate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.AC.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "11.9721(9)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "12.5988(8)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.5029(5)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "114.841(8)" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Greenish-black" } ], "name": "Color" }, { "scalars": [ { "value": "Massive-uniformly indistinguishable crystals forming large masses." } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{001} good, {110} poor" } ], "name": "Cleavage" }, { "scalars": [ { "value": "3.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "1.735" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.742" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.745" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.0100" } ], "name": "Birefringence" }, { "scalars": [ { "value": "(x): Yellowish brown (y): green (z): bluish green" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Gray green" } ], "name": "Streak" }, { "scalars": [ { "value": "3.71" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Monoclinic 2/m prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Suessite", "title": "Wikipedia: Suessite" } ], "names": [ "Suessite" ], "chemicalFormula": "Fe$_{3}$Si", "properties": [ { "scalars": [ { "value": "Iron silicide" } ], "name": "Category" }, { "scalars": [ { "value": "01.BB.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "b=c=2.841" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "$\\beta$=$\\gamma$=90" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\alpha$)" }, { "scalars": [ { "value": "Cream white in reflected light, Terrestrial is light gray with a yellow tint" } ], "name": "Color" }, { "scalars": [ { "value": "forms oval accumulations, polycrystalline aggregates" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Cubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "6.34" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Ferromagnetic," } ], "name": "Other" }, { "scalars": [ { "value": "Im3m" } ], "name": "Symmetry" }, { "scalars": [ { "value": "Isotropic" } ], "name": "Symmetry" }, { "scalars": [ { "value": "Cubic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Emmonsite", "title": "Wikipedia: Emmonsite" } ], "names": [ "Emmonsite" ], "chemicalFormula": "Fe$_{2}$(TeO$_{3}$)$_{3}$.2(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Tellurite mineral" } ], "name": "Category" }, { "scalars": [ { "value": "04.JM.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "7.90" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8.00" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "7.62" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "96.73" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\alpha$)" }, { "scalars": [ { "value": "95" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "84.47" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\gamma$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Yellowish green" } ], "name": "Color" }, { "scalars": [ { "value": "Thin-hairlike crystals, occurring in rosettes and sprays, also fibrous globular aggregates and crusts" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Triclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Noted" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {010}, good on {100} and {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "4.52-4.55" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.962" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "2.090" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "2.100-2.120" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.138-0.158" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Weak" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "$\\bar{1}$" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P$\\bar{1}$" } ], "name": "Space group" }, { "scalars": [ { "value": "Triclinic pinacoidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Macdonaldite", "title": "Wikipedia: Macdonaldite" } ], "names": [ "Macdonaldite" ], "chemicalFormula": "BaCa$_{4}$Si$_{16}$O$_{36}$(OH)$_{2}$.10H$_{2}$O", "properties": [ { "scalars": [ { "value": "Phyllosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.EB.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "14.06" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "23.52" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "13.08" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless, white" } ], "name": "Color" }, { "scalars": [ { "value": "Acicular also fibrous, in radiating aggregates, granular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{010} perfect, {001} good, {100} indistinct" } ], "name": "Cleavage" }, { "scalars": [ { "value": "3.5-4.0" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-silky" } ], "name": "Luster" }, { "scalars": [ { "value": "1.518" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.524" } ], "name": "Refractive 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(b)" }, { "scalars": [ { "value": "7.66" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "90" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Brown, greenish, colorless" } ], "name": "Color" }, { "scalars": [ { "value": "Micacious, sheet-like, pseudohexagonal, also fibrous" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {001}, good on {110}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2-3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Silky, Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.611" } ], "name": "Refractive index (n$\\alpha$)" }, { "scalars": [ { "value": "1.619" } ], "name": "Refractive index (n$\\beta$)" }, { "scalars": [ { "value": "1.621" } ], "name": "Refractive index (n$\\gamma$)" }, { "scalars": [ { "value": "0.010" } ], "name": "Birefringence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.49" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Pyroxmangite", "title": "Wikipedia: Pyroxmangite" } ], "names": [ "Pyroxmangite" ], "chemicalFormula": "MnSiO$_{3}$", "properties": [ { "scalars": [ { "value": "Inosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.DO.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "9.69" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "10.5" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "17.39" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "112.17" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\alpha$)" }, { "scalars": [ { "value": "102.85" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "82.93" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\gamma$)" }, { "scalars": [ { "value": "V 1" } ], "name": "Unit cell (V )" }, { "scalars": [ { "value": "596.00" } ], "units": "$\\AA^3$", "name": "Unit cell volume" }, { "scalars": [ { "value": "14" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "pink, red, brown" } ], "name": "Color" }, { "scalars": [ { "value": "Triclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Lamellar on {010}, simple on {001}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {110}, {1$\\bar{1}$0}, (110) ^ (1$\\bar{1}$0)=92$^{\\circ}$ poor on {010}, {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "hackly, uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5.5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "vitreous, pearly" } ], "name": "Luster" }, { "scalars": [ { "value": "0.018" } ], "name": "Birefringence" }, { "scalars": [ { "value": "colorless" } ], "name": "Streak" }, { "scalars": [ { "value": "3.8" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "$\\bar{1}$ pinacoidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Leightonite", "title": "Wikipedia: Leightonite" } ], "names": [ "Leightonite" ], "chemicalFormula": "K$_{2}$Ca$_{2}$Cu(SO$_{4}$)$_{4}$.2H$_{2}$O", "properties": [ { "scalars": [ { "value": "Sulfate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "07.CC.70" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Pale blue, greenish-blue, pale blue in transmitted light." } ], "name": "Color" }, { "scalars": [ { "value": "Lathlike crystals, flattened, elongated or equant" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Triclinic-pseudo-orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Lamellar twinning on (100) and (010) produces pseudo-orthorhombic symmetry" } ], "name": "Twinning" }, { "scalars": [ { "value": "None observed" } ], "name": "Cleavage" }, { "scalars": [ { "value": "3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.578" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.587" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.595" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.017" } ], "name": "Birefringence" }, { "scalars": [ { "value": "2.95" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Jolliffeite", "title": "Wikipedia: Jolliffeite" } ], "names": [ "Jolliffeite" ], "chemicalFormula": "(Ni,Co)AsSe", "properties": [ { "scalars": [ { "value": "Selenide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.EB.25" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.831" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Tin white" } ], "name": "Color" }, { "scalars": [ { "value": "Anhedral grains" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Isometric-diploidal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "6-6.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "7.1" } ], "conditions": [ { "scalars": [ { "value": "calculated" } ], "name": "Note" } ], "name": "Density" }, { "scalars": [ { "value": "Cubic 2m$\\bar{3}$" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/P\u00e4\u00e4kk\u00f6nenite", "title": "Wikipedia: P\u00e4\u00e4kk\u00f6nenite" } ], "names": [ "P\u00e4\u00e4kk\u00f6nenite" ], "chemicalFormula": "Sb$_{2}$AsS$_{2}$", "properties": [ { "scalars": [ { "value": "Sulfide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "02.DB.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Grey" } ], "name": "Color" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Grey with brownish tint" } ], "name": "Streak" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Tyrrellite", "title": "Wikipedia: Tyrrellite" } ], "names": [ "Tyrrellite" ], "chemicalFormula": "Cu(Co,Ni)$_{2}$Se$_{4}$", "properties": [ { "scalars": [ { "value": "Selenide mineral, Thiospinel group, Spinel structural group" } ], "name": "Category" }, { "scalars": [ { "value": "02.DA.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "b=c=10.005" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "$\\beta$=\\xcf\\x86=90" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\alpha$)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "light bronze" } ], "name": "Color" }, { "scalars": [ { "value": "granular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Isometric-hexoctahedral" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{001} Distinct" } ], "name": "Cleavage" }, { "scalars": [ { "value": "conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "black" } ], "name": "Streak" }, { "scalars": [ { "value": "6.6$\\pm$0.2" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Isometric (4/m $\\bar{3}$ 2/m)" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Kamiokite", "title": "Wikipedia: Kamiokite" } ], "names": [ "Kamiokite" ], "chemicalFormula": "Fe$_{2}$Mo$_{3}$O$_{8}$", "properties": [ { "scalars": [ { "value": "Oxide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "04.CB.40" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.782 b=5.782 c=10.053" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "527.5" } ], "units": "grams", "name": "Molecular weight" }, { "scalars": [ { "value": "black, gray" } ], "name": "Color" }, { "scalars": [ { "value": "tabular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Hexagonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "none" } ], "name": "Twinning" }, { "scalars": [ { "value": "perfect {0001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "even" } ], "name": "Fracture" }, { "scalars": [ { "value": "4.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "metallic, sub-metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "distinct, gray-dark greenish gray" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "black" } ], "name": "Streak" }, { "scalars": [ { "value": "measured=5.96" }, { "value": "calculated=6.02" } ], "conditions": [ { "scalars": [ { "value": "g/cm$^3$" }, { "value": "g/cm$^3$" } ], "name": "Note" } ], "name": "Density" }, { "scalars": [ { "value": "Rotation tints of brownish yellow" } ], "name": "Other" }, { "scalars": [ { "value": "P6$_{3}$mc" } ], "name": "Space group" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Sarabauite", "title": "Wikipedia: Sarabauite" } ], "names": [ "Sarabauite" ], "chemicalFormula": "CaSb$_{10}$O$_{10}$S$_{6}$", "properties": [ { "scalars": [ { "value": "Sulfide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.MA.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "25.37" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.65" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "16.87" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "117.58" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Carmine red" } ], "name": "Color" }, { "scalars": [ { "value": "Red tabular crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Somewhat sectile" } ], "name": "Tenacity" }, { "scalars": [ { "value": "4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Resinous" } ], "name": "Luster" }, { "scalars": [ { "value": "x is reddish yellow, y is brownish red" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Orange" } ], "name": "Streak" }, { "scalars": [ { "value": "4.8" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Monoclinic prismatic-2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Kochite", "title": "Wikipedia: Kochite" } ], "names": [ "Kochite" ], "chemicalFormula": "(Na,Ca)$_{3}$Ca$_{2}$(Mn,Ca)ZrTi[(F,O)$_{4}$(Si$_{2}$O$_{7}$)$_{2}$]", "properties": [ { "scalars": [ { "value": "Silicate mineral, rosenbuschite group" } ], "name": "Category" }, { "scalars": [ { "value": "10.03" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "11.33" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "7.202" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "90.19" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\alpha$)" }, { "scalars": [ { "value": "100.33" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "111.55" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\gamma$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless-light brown" } ], "name": "Color" }, { "scalars": [ { "value": "Acicular-lath-shaped prismatic crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Triclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{100} perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.684" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.695" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.718" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.0340" } ], "name": "Birefringence" }, { "scalars": [ { "value": "weak, colorless-pale brownish-yellow" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.32" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Triclinic pinacoidal $\\bar{1}$" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Naldrettite", "title": "Wikipedia: Naldrettite" } ], "names": [ "Naldrettite" ], "chemicalFormula": "Pd$_{2}$Sb", "properties": [ { "scalars": [ { "value": "Sulfide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.AC.25d" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "3.3906(1)" } ], "name": "Unit cell (a)" }, { "scalars": [ { "value": "17.5551(5)" } ], "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.957(2)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "Appears creamy white in plane-polarized light" } ], "name": "Color" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "strain-induced polysynthetic" } ], "name": "Twinning" }, { "scalars": [ { "value": "Irregular" } ], "name": "Fracture" }, { "scalars": [ { "value": "Ductile, Flexibly inelastic" } ], "name": "Tenacity" }, { "scalars": [ { "value": "4-5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "in" } ], "name": "Refractive index" }, { "scalars": [ { "value": "oil" } ], "name": "Refractive index" }, { "scalars": [ { "value": "1.515" } ], "name": "Refractive index" }, { "scalars": [ { "value": "non-pleochroic" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "10.694(1)" } ], "conditions": [ { "scalars": [ { "value": "g/cm$^3$" } ], "name": "Note" } ], "name": "Density" }, { "scalars": [ { "value": "580" } ], "units": "$^{\\circ}$C", "name": "Melting point" }, { "scalars": [ { "value": "Orthohombic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Sampleite", "title": "Wikipedia: Sampleite" } ], "names": [ "Sampleite" ], "chemicalFormula": "NaCaCu$_{5}$(PO$_{4}$)$_{4}$Cl.5(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Phosphate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.DG.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "9.7" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "38.4" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "9.65" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "90.07" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "875.95" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "Light blue-blue-green" } ], "name": "Color" }, { "scalars": [ { "value": "Aggregates, lath, rosette" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {010}, good on {100} and {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Pearly" } ], "name": "Luster" }, { "scalars": [ { "value": "1.629" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.677" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.679" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.050" } ], "name": "Birefringence" }, { "scalars": [ { "value": "X=deep blue, blue-green, Y=light blue, turquoise blue, Z=turquoise-blue, colorless" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Light Blue" } ], "name": "Streak" }, { "scalars": [ { "value": "3.2" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Orthorhombic (2/m 2/m 2/m) dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Christite", "title": "Wikipedia: Christite" } ], "names": [ "Christite" ], "chemicalFormula": "TlHgAsS$_{3}$", "properties": [ { "scalars": [ { "value": "Sulfosalt mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.HD.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "6.113" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "16.188" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.111" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "96.71" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "600.59" } ], "units": "$\\AA^3$", "name": "Unit cell volume" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "576.09" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "Crimson red, bright orange." } ], "name": "Color" }, { "scalars": [ { "value": "Subhedral grains, may be somewhat bladed or flattened" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{010} and {110} perfect, {101} good" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "1-2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine" } ], "name": "Luster" }, { "scalars": [ { "value": "Weak-strong, grayish green, dark violet, bluish violet" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "light orange" } ], "name": "Streak" }, { "scalars": [ { "value": "6.2" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Monoclinic 2/m prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Amicite", "title": "Wikipedia: Amicite" } ], "names": [ "Amicite" ], "chemicalFormula": "K$_{2}$Na$_{2}$Al$_{4}$Si$_{4}$O$_{16}$.5(H$_{2}$0)", "properties": [ { "scalars": [ { "value": "Zeolite" } ], "name": "Category" }, { "scalars": [ { "value": "09.GC.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "10.26" } ], "name": "Unit cell (a)" }, { "scalars": [ { "value": "10.43" } ], "name": "Unit cell (b)" }, { "scalars": [ { "value": "9.90" } ], "name": "Unit cell (c)" }, { "scalars": [ { "value": "89" } ], "name": "Unit cell (d)" }, { "scalars": [ { "value": "690.51" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "Colorless" } ], "name": "Color" }, { "scalars": [ { "value": "none" } ], "name": "Twinning" }, { "scalars": [ { "value": "none" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.485" } ], "name": "Refractive index (na)" }, { "scalars": [ { "value": "1.490" } ], "name": "Refractive index (nb)" }, { "scalars": [ { "value": "1.495" } ], "name": "Refractive index (nc)" }, { "scalars": [ { "value": "0.01" } ], "name": "Birefringence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.18" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Sacrofanite", "title": "Wikipedia: Sacrofanite" } ], "names": [ "Sacrofanite" ], "chemicalFormula": "(Na,Ca)$_{9}$(Si,Al)$_{12}$O$_{24}$(SO$_{4}$,CO$_{3}$,OH,Cl)$_{4}$.n(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Cancrinite group, tec-silicate" } ], "name": "Category" }, { "scalars": [ { "value": "12.86" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "72.24" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "10" } ], "name": "Unit cell (V)" }, { "scalars": [ { "value": "346.52" } ], "units": "$\\AA^3$", "name": "Unit cell volume" }, { "scalars": [ { "value": "14" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless" } ], "name": "Color" }, { "scalars": [ { "value": "Perfect on {0001} {01$\\bar{1}$0}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "white" } ], "name": "Streak" }, { "scalars": [ { "value": "Hexagonal (space groups: P6$_{3}$mc, P$\\bar{6}$2c, and P6$_{3}$/mmc)" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Pearly-vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "5.5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "1.505" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.486" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.019" } ], "name": "Birefringence" }, { "scalars": [ { "value": "2.423" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "$\\bar{6}$m2 or 6/m 2/m 2/m" } ], "name": "Symmetry" }, { "scalars": [ { "value": "Hexagonal 6mm" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Mooihoekite", "title": "Wikipedia: Mooihoekite" } ], "names": [ "Mooihoekite" ], "chemicalFormula": "Cu$_{9}$Fe$_{9}$S$_{16}$", "properties": [ { "scalars": [ { "value": "Sulfide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.CB.10b" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "10.58" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.38" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "602.22 $^{3}$" } ], "units": "$\\AA$", "name": "Unit cell (volume)" }, { "scalars": [ { "value": "1" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "1587.59" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "Pale yellow. Tarnishes-pinkish brown and purple" } ], "name": "Color" }, { "scalars": [ { "value": "Granular-Generally occurs as anhedral-subhedral crystals in matrix" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Tetragonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Black" } ], "name": "Streak" }, { "scalars": [ { "value": "4.36" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Tetragonal $\\bar{4}$2m scalenohedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Babefphite", "title": "Wikipedia: Babefphite" } ], "names": [ "Babefphite" ], "chemicalFormula": "BaBe(PO$_{4}$)(F,OH)", "properties": [ { "scalars": [ { "value": "Phosphate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "08.BA.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "4.89" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "16.74" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4 or a=6.889 b=16.814 c=6.902" } ], "units": "$\\AA$", "name": "Unit cell (Z)" }, { "scalars": [ { "value": "90.01 $\\beta$=89.99 $\\gamma$=90.32" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\alpha$)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "White" } ], "name": "Color" }, { "scalars": [ { "value": "As anhedral, equant-flattened grains,-1.5 mm, may be in aggregates" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Tetragonal, Triclinic, pseudotetragonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.629" } ], "name": "Refractive index (n$\\omega$)" }, { "scalars": [ { "value": "1.632" } ], "name": "Refractive index (n$\\epsilon$)" }, { "scalars": [ { "value": "0.003" } ], "name": "Birefringence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "4.31" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "4/m 2/m 2/m" } ], "name": "H-M Symbol" }, { "scalars": [ { "value": "I 4$_{1}$/amd" } ], "name": "Space group" }, { "scalars": [ { "value": "etragonal ditetragonal dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Amarantite", "title": "Wikipedia: Amarantite" } ], "names": [ "Amarantite" ], "chemicalFormula": "Fe$^{3+}$$_{2}$O(SO$_{4}$)$_{2}$.7H$_{2}$O", "properties": [ { "scalars": [ { "value": "Sulfate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "07.DB.30" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "8.9" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "11.56" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.64" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "95.55" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\alpha$)" }, { "scalars": [ { "value": "90.52" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "97.42" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\gamma$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Amaranth-red-brownish red, orange-red" } ], "name": "Color" }, { "scalars": [ { "value": "As radiating or matted aggregates of needles, may be columnar or bladed" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Triclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {010} and {100}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "Lemon-yellow" } ], "name": "Streak" }, { "scalars": [ { "value": "2.189-2.286" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.516" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.598" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.621" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.105" } ], "name": "Birefringence" }, { "scalars": [ { "value": "X=colorless, Y=pale yellow, Z=reddish brown" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "$\\bar{1}$" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P$\\bar{1}$" } ], "name": "Space group" }, { "scalars": [ { "value": "Triclinic pinacoidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Gilalite", "title": "Wikipedia: Gilalite" } ], "names": [ "Gilalite" ], "chemicalFormula": "Cu$_{5}$Si$_{6}$O$_{17}$.7(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Silicate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "09.HE.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "13.38 b=19.16 c=9.026" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "$\\beta$ $\\in$ 90" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$ $\\in$ 9)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Blue green, green" } ], "name": "Color" }, { "scalars": [ { "value": "Raidiating fibrous in spherules" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Waxy or gummy" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Nonmetallic" } ], "name": "Luster" }, { "scalars": [ { "value": "1.560" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.635" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.635" } ], "name": "Refractive index (n$_{\\xce\\x8e}$)" }, { "scalars": [ { "value": "0.075" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Light green" } ], "name": "Streak" }, { "scalars": [ { "value": "2.72" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "monoclinic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Bayldonite", "title": "Wikipedia: Bayldonite" } ], "names": [ "Bayldonite" ], "chemicalFormula": "PbCu$_{3}$(AsO$_{4}$)$_{2}$(OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Arsenate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.BH.45" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Green, apple-green" } ], "name": "Color" }, { "scalars": [ { "value": "4.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Resinous" } ], "name": "Luster" }, { "scalars": [ { "value": "5.24-5.65" }, { "value": "5.707" } ], "conditions": [ { "scalars": [ { "value": "g/cm$^{3}$" }, { "value": "g/cm$^{3}$" } ], "name": "Note" } ], "name": "Density" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Gabrielite", "title": "Wikipedia: Gabrielite" } ], "names": [ "Gabrielite" ], "chemicalFormula": "Tl$_{6}$Ag$_{3}$Cu$_{6}$(As,Sb)$_{9}$S$_{21}$", "properties": [ { "scalars": [ { "value": "Sulfide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.HD.60" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "12.138" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "12.196" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "15.944" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "78.537" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\alpha$)" }, { "scalars": [ { "value": "84.715" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "60.47" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\gamma$)" }, { "scalars": [ { "value": "6" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Grey-black" } ], "name": "Color" }, { "scalars": [ { "value": "Pseudo Hexagonal" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Triclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Common, with (100) as twin plane" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "1.5-2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "weak 470nm R=30.53%, 546nm R=29.1%, 589nm R=27.94%, 650nm R=26.35%" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Blackish red" } ], "name": "Streak" }, { "scalars": [ { "value": "5.38" } ], "conditions": [ { "scalars": [ { "value": "g/cm$^{3}$" } ], "name": "Note" } ], "name": "Density" }, { "scalars": [ { "value": "Triclinic pedial" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Sch\u00e4ferite", "title": "Wikipedia: Sch\u00e4ferite" } ], "names": [ "Sch\u00e4ferite" ], "chemicalFormula": "Ca$_{2}$NaMg$_{2}$[VO$_{4}$]$_{3}$", "properties": [ { "scalars": [ { "value": "Phosphate mineral, Berzeliite group, Garnet structural group" } ], "name": "Category" }, { "scalars": [ { "value": "08.AC.25" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "12.427" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "496.57" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "Red, orange-red" } ], "name": "Color" }, { "scalars": [ { "value": "Octahedral crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Cubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.96" } ], "name": "Refractive index (n)" }, { "scalars": [ { "value": "Yellow" } ], "name": "Streak" }, { "scalars": [ { "value": "4/m$\\bar{3}$2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "I a3d" } ], "name": "Space group" }, { "scalars": [ { "value": "Isometric hexoctahedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Quintinite", "title": "Wikipedia: Quintinite" } ], "names": [ "Quintinite" ], "chemicalFormula": "Mg$_{4}$Al$_{2}$(OH)$_{12}$CO$_{3}$.H$_{2}$O", "properties": [ { "scalars": [ { "value": "Carbonate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "05.DA.40" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "10.571" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "15.171" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless, deep orange red, orange, pale brown" } ], "name": "Color" }, { "scalars": [ { "value": "Prismatic-crystals shaped like slender prisms" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Hexagonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{0001} perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.533" } ], "name": "Refractive index" }, { "scalars": [ { "value": "For 2H polytype, O=yellow, E=lighter yellow, For 3T polytype, typically nonpleochroic" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.14" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "6 2 2" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 6$_{3}$22" } ], "name": "Space group" }, { "scalars": [ { "value": "Hexagonal trapezohedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Nambulite", "title": "Wikipedia: Nambulite" } ], "names": [ "Nambulite" ], "chemicalFormula": "(Li,Na)Mn$_{4}$Si$_{5}$O$_{14}$(OH)", "properties": [ { "scalars": [ { "value": "Inosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.DK.05" } ], "name": "Strunz 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"scalars": [ { "value": "{001} perfect, {100} distinct, {010} distinct" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "6.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-adamantine" } ], "name": "Luster" }, { "scalars": [ { "value": "1.707" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.710" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.730" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.023" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Weak" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Pale yellow" } ], "name": "Streak" }, { "scalars": [ { "value": "3.51" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "the Li analogue of natronambulite" } ], "name": "Other" }, { "scalars": [ { "value": "P $\\bar{1}$" } ], "name": "Symmetry" }, { "scalars": [ { "value": "Triclinic pinacoidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Zorite", "title": "Wikipedia: Zorite" } ], "names": [ "Zorite" ], "chemicalFormula": "Na$_{2}$Ti(Si,Al)$_{3}$O$_{9}$.nH$_{2}$O", "properties": [ { "scalars": [ { "value": "Inosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.DG.45" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "23.91" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "7.23" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "14.24" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (V)" }, { "scalars": [ { "value": "461.66" } ], "units": "$\\AA^3$", "name": "Unit cell volume" }, { "scalars": [ { "value": "1538.53" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "Rose red" } ], "name": "Color" }, { "scalars": [ { "value": "Prismic acicular crystals, sometimes radiating" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "3~4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.59" } ], "name": "Refractive index (n)" }, { "scalars": [ { "value": "x=rose, y=colorless, z=blue" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.18" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Found in cavities and fractures in alkalic pegmatite" } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Sewardite", "title": "Wikipedia: Sewardite" } ], "names": [ "Sewardite" ], "chemicalFormula": "CaFe$_{2}$$^{+3}$(AsO$_{4}$)$_{2}$(OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Arsenate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.BH.30" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "16.461" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "7.434" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "12.131" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "464.68" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "Dark red, lighter red orange" } ], "name": "Color" }, { "scalars": [ { "value": "Platy aggregates, anhedral grains" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{100} and {011} imperfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Splintery-thin elongated 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"Wikipedia: Switzerite" } ], "names": [ "Switzerite" ], "chemicalFormula": "(Mn,Fe)$_{3}$(PO$_{4}$)$_{2}$.7H$_{2}$O", "properties": [ { "scalars": [ { "value": "Phosphate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.CE.25" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "8.528" } ], "name": "Unit cell (a)" }, { "scalars": [ { "value": "13.166" } ], "name": "Unit cell (b)" }, { "scalars": [ { "value": "11.812" } ], "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "110.05 V=1" } ], "units": "$^{\\circ}$", "name": "Unit cell (beta)" }, { "scalars": [ { "value": "245.87" } ], "name": "Unit cell (245.87)" }, { "scalars": [ { "value": "481.55" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "Pale pink, Pinkish brown" } ], "name": "Color" }, { "scalars": [ { "value": "Monoclinic-Prismatic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect (001) 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"g", "name": "Molecular weight" }, { "scalars": [ { "value": "Greenish brown" } ], "name": "Color" }, { "scalars": [ { "value": "Bladed" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{100} perfect, {010} indistinct" } ], "name": "Cleavage" }, { "scalars": [ { "value": "6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "1.780-1.800" } ], "name": "Refractive index" }, { "scalars": [ { "value": "yellowish brown-greenish yellow" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "4.44" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "pyramidal mm2" } ], "name": "Symmetry" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Eveite", "title": "Wikipedia: Eveite" } ], "names": [ "Eveite" ], "chemicalFormula": "Mn$_{2}$$^{2+}$AsO$_{4}$OH", "properties": [ { "scalars": [ { "value": "Arsenate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.BB.30" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "8.57(1)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8.77(1)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.27(1)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "265.80" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "Apple green, pale yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Tabular or sheaf-like" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Fair on {101}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "3.5-4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.700(5)" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.715(5)" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.732(10)" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "$\\beta$=.032" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Visible: X=Z=green Y=Yellow" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.76" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "completely soluble in cold 1:1 HCl" } ], "name": "Solubility" }, { "scalars": [ { "value": "''Pnnm''" } ], "name": "Space group" }, { "scalars": [ { "value": "Orthorhombic (2/m 2/m 2/m) dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Roselite", "title": "Wikipedia: Roselite" } ], "names": [ "Roselite" ], "chemicalFormula": "Ca$_{2}$(Co$^{2+}$, Mg)[AsO$_{4}$]$_{2}$.H$_{2}$O", "properties": [ { "scalars": [ { "value": "Arsenate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.CG.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.801" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "12.898" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.617" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "107.42" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Dark rose red, pink" } ], "name": "Color" }, { "scalars": [ { "value": "Elongated crystals and spherical aggregates and druses" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Common as composition plane, contact twins and fourlings" } ], "name": "Twinning" }, { "scalars": [ { "value": "{010} Perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "3.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "Light red" } ], "name": "Streak" }, { "scalars": [ { "value": "3.69" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.725" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.728" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.735" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "Visible" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Monoclinic 2/m prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Curite", "title": "Wikipedia: Curite" } ], "names": [ "Curite" ], "chemicalFormula": "Pb$_{3}$(UO$_{2}$)$_{8}$O$_{8}$(OH)$_{6}$.3(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Oxide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "04.GB.55" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Yellow, reddish orange, brownish yellow." } ], "name": "Color" }, { "scalars": [ { "value": "Massive, acicular, compact earthy." } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{100}, imperfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "4-5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine" } ], "name": "Luster" }, { "scalars": [ { "value": "Orange" } ], "name": "Streak" }, { "scalars": [ { "value": "6.98-7.4" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.060" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "2.110" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "2.150" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": ".090" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Visible: X=b=pale yellow, Y=a=light red-orange, Z=c=dark red-orange" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Yes" } ], "name": "fluorescence" }, { "scalars": [ { "value": "Radioactive" } ], "name": "Other" }, { "scalars": [ { "value": "Orthorhombic (2/m 2/m 2/m) dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Za\u00efrite", "title": "Wikipedia: Za\u00efrite" } ], "names": [ "Za\u00efrite" ], "chemicalFormula": "Bi(Fe$^{3+}$,Al)$_{3}$[(OH)$_{6}$(PO$_{4}$)$_{2}$]", "properties": [ { "scalars": [ { "value": "Phosphate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.BL.13" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "7.015" } ], "units": "$\\AA$", "name": "Unit cell 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"value": "13.65" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "4.07" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "20.68" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "93" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "Lead grey" } ], "name": "Color" }, { "scalars": [ { "value": "Elongated and striated prismatic crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "On {001}" } ], "name": "Twinning" }, { "scalars": [ { "value": "3" } ], "conditions": [ { "scalars": [ { "value": "calcite" } ], "name": "Note" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Grey" } ], "name": "Streak" }, { "scalars": [ { "value": "7.08" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2" } ], 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"$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "90.05" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\gamma$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Blue green" } ], "name": "Color" }, { "scalars": [ { "value": "Aggregates of acicular crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Triclinic (pseudomonoclinic)" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Polysynthetic around [010]" } ], "name": "Twinning" }, { "scalars": [ { "value": "{001} indistinct" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Splintery" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "4-5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Sub-vitreous, greasy" } ], "name": "Luster" }, { "scalars": [ { "value": "Pale green" } ], "name": "Streak" }, { "scalars": [ { "value": "3.10-3.13" } ], "name": 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{ "value": "13.57" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "3" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "654.60" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "Brass yellow, cream-white in polished section" } ], "name": "Color" }, { "scalars": [ { "value": "Generally found as an inclusion" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{1011} Perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Strong, dark blue-gray" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Distinct" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "8.72" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "$\\bar{3}$2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": 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"46.84" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "1" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "668.70" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "Bluish white in reflected light" } ], "name": "Color" }, { "scalars": [ { "value": "Platy-sheet forms , pseudocubic" } ], "conditions": [ { "scalars": [ { "value": "e.g. micas" } ], "name": "Note" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "3.5-4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Weak" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "5.61" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "R$\\bar{3}$m" } ], "name": "Space group" }, { "scalars": [ { "value": "Trigonal rhombohedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Kr\u00f6hnkite", "title": "Wikipedia: Kr\u00f6hnkite" } ], "names": [ "Kr\u00f6hnkite" ], "chemicalFormula": "Na$_{2}$Cu(SO$_{4}$)$_{2}$.2H$_{2}$O", "properties": [ { "scalars": [ { "value": "Sulfate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "5.78" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "12.58" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.48" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "108.3" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Blue, dark sky blue, greenish blue, yellowish green" } ], "name": "Color" }, { "scalars": [ { "value": "Encrustations , fibrous, massive" } ], "conditions": [ { "scalars": [ { "value": "on matrix" } ], "name": "Note" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic space group P2$_{1}$/c" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Common, sometimes heart-shaped" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect {010}, good (011), very imperfect {101}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "2.5-3.0" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.544" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.578" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.601" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.057" } ], "name": "Birefringence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.92" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Readily soluble in water" } ], "name": "Solubility" }, { 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"conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "7.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Grayish black" } ], "name": "Streak" }, { "scalars": [ { "value": "4.41" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "metamict due-trace-minor uranium substitution" } ], "name": "Other" }, { "scalars": [ { "value": "Trigonal $\\bar{3}$" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Stellerite", "title": "Wikipedia: Stellerite" } ], "names": [ "Stellerite" ], "chemicalFormula": "Ca(Al$_{2}$Si$_{7}$O$_{18}$).7H$_{2}$0", "properties": [ { "scalars": [ { "value": "Colorless-white, pink, orange" } ], "name": "Color" }, { "scalars": [ { "value": "Spherical, Stellate, Tabular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {010}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "4.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Pearly" } ], "name": "Luster" }, { "scalars": [ { "value": "0.013" } ], "name": "Birefringence" }, { "scalars": [ { "value": "white" } ], "name": "Streak" }, { "scalars": [ { "value": "2.2" } ], "conditions": [ { "scalars": [ { "value": "approximately" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.13" } ], "conditions": [ { "scalars": [ { "value": "g/cm$^3$" } ], "name": "Note" } ], "name": "Density" }, { "scalars": [ { "value": "F2/m 2/m 2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Madocite", "title": "Wikipedia: Madocite" } ], "names": [ "Madocite" ], "chemicalFormula": "Pb$_{17}$(Sb,As)$_{16}$S$_{41}$", "properties": [ { "scalars": [ { "value": "Sulfosalt mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.LB.30" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "27.2" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "34.1" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "4.06" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Grayish black" } ], "name": "Color" }, { "scalars": [ { "value": "Elongated and striated crystals, massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{010} Perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "3.25" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Strong, from white-gray" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Grayish black, shining" } ], "name": "Streak" }, { "scalars": [ { "value": "5.98" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "mm2" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "Pb2a" } ], "name": "Space group" }, { "scalars": [ { "value": "Orthorhombic pyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Fettelite", "title": "Wikipedia: Fettelite" } ], "names": [ "Fettelite" ], "chemicalFormula": "Ag$_{16}$HgAs$_{4}$S$_{15}$ (rruff) or", "properties": [ { "scalars": [ { "value": "Sulfosalt mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.LA.30" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "15.00" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "15.46" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "3014" } ], "units": "$\\AA^3$", "name": "Unit cell volume" }, { "scalars": [ { "value": "3" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "dark violet-red" } ], "name": "Color" }, { "scalars": [ { "value": "flakes, hexagonal, micaceous" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "intimately twinned with six twin domains" } ], "name": "Twinning" }, { "scalars": [ { "value": "perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "subconchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "3.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "1.74" } ], "name": "Refractive index (N)" }, { "scalars": [ { "value": "moderate white-brownish gray" } ], "name": "Birefringence" }, { "scalars": [ { "value": "dark vermillion" } ], "name": "Streak" }, { "scalars": [ { "value": "6.29" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "trigonal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Ericssonite", "title": "Wikipedia: Ericssonite" } ], "names": [ "Ericssonite" ], "chemicalFormula": "BaMn$_{2}$FeO[Si$_{2}$O$_{7}$](OH)", "properties": [ { "scalars": [ { "value": "Sorosilicates" } ], "name": "Category" }, { "scalars": [ { "value": "deep reddish black" } ], "name": "Color" }, { "scalars": [ { "value": "Massive-Uniformly indistinguishable crystals forming large masses" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "monoclinic, 2 or 2/m" } ], "name": "Crystal system" }, { "scalars": [ { "value": "20.42" } ], "name": "Unit cell (a)" }, { "scalars": [ { "value": "7.03" } ], "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.34" } ], "name": "Unit cell (c)" }, { "scalars": [ { "value": "95.5" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "perfect, perfect on (100) fair on (011)" } ], "name": "Cleavage" }, { "scalars": [ { "value": "very brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "4.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "sub metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "brown" } ], "name": "Streak" }, { "scalars": [ { "value": "4.21" } ], "name": "Density" }, { "scalars": [ { "value": "weakly magnetic" } ], "name": "Other" }, { "scalars": [ { "value": "1.802-1.891" } ], "name": "Refractive index" }, { "scalars": [ { "value": "x=pale greenish tan, y=red-brown, z=deep brown" } ], "name": "Pleochroism" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Minyulite", "title": "Wikipedia: Minyulite" } ], "names": [ "Minyulite" ], "chemicalFormula": "KAl$_{2}$(OH,F)(PO$_{4}$)$_{2}$.4(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Phosphate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "08.DH.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "9.34" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "9.74" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.52" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "372.57" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "Colorless-white, greenish yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Radiating fibrous-prismatic crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{001} Perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven-Flat surfaces fractured in an uneven pattern." } ], "conditions": [ { "scalars": [ { "value": "not cleavage" } ], "name": "Note" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, silky in aggregates" } ], "name": "Luster" }, { "scalars": [ { "value": "1.531" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.534" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.538" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.007" } ], "name": "Birefringence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.45" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "mm2" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "Pba2" } ], "name": "Space group" }, { "scalars": [ { "value": "Orthorhombic pyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Gananite", "title": "Wikipedia: Gananite" } ], "names": [ "Gananite" ], "chemicalFormula": "BiF$_{3}$", "properties": [ { "scalars": [ { "value": "Halide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "03.AC.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Brown-black, greenish black" } ], "name": "Color" }, { "scalars": [ { "value": "Aggregates" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Cubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Resinous-semimetallic" } ], "name": "Luster" }, { "scalars": [ { "value": "N/A" } ], "name": "Birefringence" }, { "scalars": [ { "value": "non-Pleochroic" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Dark grey" } ], "name": "Streak" }, { "scalars": [ { "value": "8.928" } ], "conditions": [ { "scalars": [ { "value": "calculated" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "$\\bar{4}$3m" } ], "name": "point group" }, { "scalars": [ { "value": "Cubic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Kanoite", "title": "Wikipedia: Kanoite" } ], "names": [ "Kanoite" ], "chemicalFormula": "(Mg,Mn$^{2+}$)$_{2}$Si$_{2}$O$_{6}$", "properties": [ { "scalars": [ { "value": "Silicate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "9.73" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8.93" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.26" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "108.56" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "246.73" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "Light pinkish brown" } ], "name": "Color" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Polysynthetic" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {110}, {110}-{1$\\bar{1}$0}=88$^{\\circ}$" } ], "name": "Cleavage" }, { "scalars": [ { "value": "6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.715" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.715" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.728" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.0130" } ], "name": "Birefringence" }, { "scalars": [ { "value": "3.66" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Monoclinic 2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Marialite", "title": "Wikipedia: Marialite" } ], "names": [ "Marialite" ], "chemicalFormula": "Na$_{4}$Al$_{3}$Si$_{9}$O$_{24}$Cl", "properties": [ { "scalars": [ { "value": "Tec-silicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.FB.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "12.06" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "7.572(3)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless, white, grey, pink, violet, blue, yellow, brown, orange-brown, pale green or reddish" } ], "name": "Color" }, { "scalars": [ { "value": "Typically flat, pyramidal striated crystals, massive, granular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Tetragonal, crystals are usually prismatic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Distinct on {100} and {110}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven-conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5.5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, pearly, resinous" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.55-2.74" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.5-2.62" } ], "conditions": [ { "scalars": [ { "value": "g/cm$^{3}$" } ], "name": "Note" } ], "name": "Density" }, { "scalars": [ { "value": "1.539-1.550" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.532-1.541" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.007-0.009" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Tetragonal 4/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Malayaite", "title": "Wikipedia: Malayaite" } ], "names": [ "Malayaite" ], "chemicalFormula": "CaSnO[SiO$_{4}$]", "properties": [ { "scalars": [ { "value": "Silicate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "9.AG.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "7.15" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8.90" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.67" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "113.4" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "389.50 $^{3}$" } ], "units": "$\\AA$", "name": "Unit cell (V)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "266.87" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "Colorless, greenish gray, white, light yellow, orange" } ], "name": "Color" }, { "scalars": [ { "value": "Massive or wedge shaped" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "3.5-4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous or resinuous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.765" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.784" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.799" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.0340-0.0350" } ], "name": "Birefringence" }, { "scalars": [ { "value": "x=colorless, y=colorless, z=pale yellow" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "4.3-4.55" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Fluorescent, Short UV=bright yellowish green" } ], "name": "Other" }, { "scalars": [ { "value": "Monoclinic prismatic (2/m)" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Annite", "title": "Wikipedia: Annite" } ], "names": [ "Annite" ], "chemicalFormula": "KFe$_{3}$^{2+}$}$AlSi$_{3}$O$_{10}$(OH,F)$_{2}$", "properties": [ { "scalars": [ { "value": "Phyllosilicates, Mica group" } ], "name": "Category" }, { "scalars": [ { "value": "09.EC.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.39" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "9.33" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "10.29" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "100" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Brown-black" } ], "name": "Color" }, { "scalars": [ { "value": "usually in blocks\"of thin sheets or as aggregations of foliated thin scales. Includes large" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic, pseudohexagonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "contact twins with composition surface on {001} and twin axis {310}" } ], "name": "Twinning" }, { "scalars": [ { "value": "perfect in one direction {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "flexible" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2.5-3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "submetallic-vitreous, pearly on cleavage surfaces" } ], "name": "Luster" }, { "scalars": [ { "value": "1.625-1.631" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.690" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.691-1.697" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "X=brown, Y=Z=dark brown" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "brownish white" } ], "name": "Streak" }, { "scalars": [ { "value": "3.3" } ], "conditions": [ { "scalars": [ { "value": "approximately" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "diagnostic: occurrence: in magnesium poor igneous and metamorphic rocks." } ], "name": "Other" }, { "scalars": [ { "value": "Monoclinic 2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Dyscrasite", "title": "Wikipedia: Dyscrasite" } ], "names": [ "Dyscrasite" ], "chemicalFormula": "Ag$_{3}$Sb", "properties": [ { "scalars": [ { "value": "Antimonide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.AA.35" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "3.008" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "4.828" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.214" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "1" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Silver-white" } ], "conditions": [ { "scalars": [ { "value": "tarnishes-lead-gray, yellowish, or black" } ], "name": "Note" } ], "name": "Color" }, { "scalars": [ { "value": "Pyramidal crystals also cylindrical, prismatic-platy, striated, granular, foliated or massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "On {110} produces pseudohexagonal forms" } ], "name": "Twinning" }, { "scalars": [ { "value": "Distinct on {001} {001}, imperfect on {110}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Irregular or uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Sectile" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3.5-4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Very Weak" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Very Weak" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Silver-white" } ], "name": "Streak" }, { "scalars": [ { "value": "9.4-10" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Orthorhombic pyramidal ''mm''2" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Rameauite", "title": "Wikipedia: Rameauite" } ], "names": [ "Rameauite" ], "chemicalFormula": "K$_{2}$Ca(UO$_{2}$)$_{6}$OH$_{16}$.H$_{2}$O or K$_{2}$CaU$^{6+}$$_{6}$O$_{20}$.9H$_{2}$O", "properties": [ { "scalars": [ { "value": "Oxide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "04.GB.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "13.97" } ], "name": "Unit cell (a)" }, { "scalars": [ { "value": "14.26" } ], "name": "Unit cell (b)" }, { "scalars": [ { "value": "14.22" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "121.02: Z=4" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "2028.57" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "Orange" } ], "name": "Color" }, { "scalars": [ { "value": "Prismatic and/or can consist of a hexagonal outline" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "On {100}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Good cleavage" } ], "name": "Cleavage" }, { "scalars": [ { "value": "n.d." } ], "name": "Refractive index (a)" }, { "scalars": [ { "value": "1.95" } ], "name": "Refractive index ($\\beta$)" }, { "scalars": [ { "value": "1.97" } ], "name": "Refractive index ($\\gamma$)" }, { "scalars": [ { "value": "5.6" } ], "name": "Density" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Sweetite", "title": "Wikipedia: Sweetite" } ], "names": [ "Sweetite" ], "chemicalFormula": "Zn(OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Hydroxide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "04.FA.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "8.22" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "14.34" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "968.93 $^{3}$" } ], "units": "$\\AA$", "name": "Unit cell (V)" }, { "scalars": [ { "value": "20" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "99.40" } ], "units": "g/mol", "name": "Molecular weight" }, { "scalars": [ { "value": "Colorless, white" } ], "name": "Color" }, { "scalars": [ { "value": "Bipyramidal" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Tetragonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Irregular" } ], "name": "Fracture" }, { "scalars": [ { "value": "3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.635" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.628" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.007" } ], "name": "Birefringence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.33" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "4/m" } ], "name": "Symmetry" }, { "scalars": [ { "value": "Tetragonal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Pinalite", "title": "Wikipedia: Pinalite" } ], "names": [ "Pinalite" ], "chemicalFormula": "Pb$_{3}$WO$_{5}$Cl$_{2}$", "properties": [ { "scalars": [ { "value": "Tungstate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "03.DC.55" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "11.07" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "13.08" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.62" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Bright-pale yellow, golden, orange" } ], "name": "Color" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Penetration twins on {010}" } ], "name": "Twinning" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "Adamantine" } ], "name": "Luster" }, { "scalars": [ { "value": "2.490" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "2.495" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "2.505" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.015" } ], "name": "Birefringence ($\\delta$)" }, { "scalars": [ { "value": "7.78" } ], "conditions": [ { "scalars": [ { "value": "calculated" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Orthorhombic 2/m 2/m 2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Salzburgite", "title": "Wikipedia: Salzburgite" } ], "names": [ "Salzburgite" ], "chemicalFormula": "Pb$_{2}$Cu$_{2}$Bi$_{7}$S$_{12}$", "properties": [ { "scalars": [ { "value": "02.HB.05a" } ], "name": "Strunz classification" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Studenitsite", "title": "Wikipedia: Studenitsite" } ], "names": [ "Studenitsite" ], "chemicalFormula": "NaCa$_{2}$[B$_{9}$O$_{14}$(OH$_{4}$)].2H$_{2}$O", "properties": [ { "scalars": [ { "value": "Phylloborates" } ], "name": "Category" }, { "scalars": [ { "value": "06.GB.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "11.4994" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "12.5878" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "10.5297" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "99.416" } ], "units": "$^{\\circ}$", "name": "Unit cell (beta)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "528" } ], "units": "g/mole", "name": "Molecular weight" }, { "scalars": [ { "value": "Colourless-light dirty-yellow and light grey" } ], "name": "Color" }, { "scalars": [ { "value": "Clusters of flattened wedge-shaped crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Fragile" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5.5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.532" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.538" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.564" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.032" } ], "name": "Birefringence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.29" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Named after Studenica, a cloister near the discovery locality." } ], "name": "Other" }, { "scalars": [ { "value": "Monoclinic 2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Sincosite", "title": "Wikipedia: Sincosite" } ], "names": [ "Sincosite" ], "chemicalFormula": "CaV$_{2}$(PO$_{4}$)$_{2}$O$_{2}$ . 5H$_{2}$O", "properties": [ { "scalars": [ { "value": "Vanadate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.CJ.65" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Tetragonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "1-2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, Pearly, Sub-Metallic, Dull" } ], "name": "Luster" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Laplandite-(Ce)", "title": "Wikipedia: Laplandite-(Ce)" } ], "names": [ "Laplandite-(Ce)" ], "chemicalFormula": "Na$_{4}$CeTiPO$_{4}$Si$_{7}$O$_{18}$.5H$_{2}$O", "properties": [ { "scalars": [ { "value": "Inosilicates" } ], "name": "Category" }, { "scalars": [ { "value": "09.DJ.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "949.59" } ], "units": "g/mol", "name": "Molecular weight" }, { "scalars": [ { "value": "gray-white, pale yellow, pale blue" } ], "name": "Color" }, { "scalars": [ { "value": "radial, prismatic" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "orthorhombic-dipyramidal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "none" } ], "name": "Cleavage" }, { "scalars": [ { "value": "splintery" } ], "name": "Fracture" }, { "scalars": [ { "value": "2-3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.568" } ], "name": "Refractive index (n$\\alpha$)" }, { "scalars": [ { "value": "1.584" } ], "name": "Refractive index (n$\\beta$)" }, { "scalars": [ { "value": "1.585" } ], "name": "Refractive index (n$\\gamma$)" }, { "scalars": [ { "value": "<=0.017" } ], "name": "Birefringence" }, { "scalars": [ { "value": "white" } ], "name": "Streak" }, { "scalars": [ { "value": "2.71" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.83" } ], "name": "Density" }, { "scalars": [ { "value": "(2/m 2/m 2/m)" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Samuelsonite", "title": "Wikipedia: Samuelsonite" } ], "names": [ "Samuelsonite" ], "chemicalFormula": "(Ca,Ba)Ca$_{8}$Fe$_{2}$$^{2+}$Mn$_{2}$$^{2+}$Al$_{2}$[(OH)$_{2}$(PO$_{4}$)$_{10}$]", "properties": [ { "scalars": [ { "value": "Phosphate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.BF.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "18.495" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "6.805" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "14.000" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "112.75" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Pale yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Prismatic crystals, elongated and striated" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Fair on {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine, Sub-Adamantine" } ], "name": "Luster" }, { "scalars": [ { "value": "1.645-1.648" } ], "name": "Refractive index (n$\\alpha$)" }, { "scalars": [ { "value": "1.650-1.655" } ], "name": "Refractive index (n$\\beta$)" }, { "scalars": [ { "value": "1.655-1.667" } ], "name": "Refractive index (n$\\gamma$)" }, { "scalars": [ { "value": "0.0100-0.0190" } ], "name": "Birefringence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.353" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2/m prismatic" } ], "name": "Symmetry" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Simpsonite", "title": "Wikipedia: Simpsonite" } ], "names": [ "Simpsonite" ], "chemicalFormula": "Al$_{4}$(Ta,Nb)$_{3}$O$_{13}$(OH)", "properties": [ { "scalars": [ { "value": "Oxide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "04.DC.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "7.37" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "4.51" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "1" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "813.65" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "White-cream, yellow-yellow-brown when altered" } ], "name": "Color" }, { "scalars": [ { "value": "Euhedral, prismatic, striated" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "7-7.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-adamantine" } ], "name": "Luster" }, { "scalars": [ { "value": "2.045" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "2.025" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.020" } ], "name": "Birefringence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "6.7" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Blue-white cathodoluminescence and yellow fluorescence in SW UV" } ], "name": "Other" }, { "scalars": [ { "value": "Trigonal 3 pyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Kainosite-(Y)", "title": "Wikipedia: Kainosite-(Y)" } ], "names": [ "Kainosite-(Y)" ], "chemicalFormula": "Ca$_{2}$(Y,Ce) SiO$_{4}$O$_{12}$(CO$_{3}$).(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Silicate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "664.14" } ], "units": "g/mol", "name": "Molecular weight" }, { "scalars": [ { "value": "Orthorhombic dipyramidal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{110} Good" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle and uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "vitreous-resinous" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "1.662-1.665" } ], "name": "Refractive index (n$\\alpha$)" }, { "scalars": [ { "value": "1.682-1.689" } ], "name": "Refractive index (n$\\beta$)" }, { "scalars": [ { "value": "1.687-1.692" } ], "name": "Refractive index (n$\\gamma$)" }, { "scalars": [ { "value": "Maximum Birefringence: 0.025-0.027" } ], "name": "Birefringence" }, { "scalars": [ { "value": "high relief" } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Amesite", "title": "Wikipedia: Amesite" } ], "names": [ "Amesite" ], "chemicalFormula": "Mg$_{2}$Al$_{2}$SiO$_{5}$(OH)$_{4}$", "properties": [ { "scalars": [ { "value": "Phyllosilicates, Kaolinite-serpentine group" } ], "name": "Category" }, { "scalars": [ { "value": "09.ED.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.307(1)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "9.195(2)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "14.068(3)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "90.09(2)" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\alpha$)" }, { "scalars": [ { "value": "90.25(2)" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "89.96(2)" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\gamma$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "White, colorless, pink-lilac, pale green" } ], "name": "Color" }, { "scalars": [ { "value": "Crystals form as platy-tapering elongated pseudohexagonal prisms" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Triclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Common as six-fold sector twins on {001} and polysynthetic twins parallel-{010}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "Pearly" } ], "name": "Luster" }, { "scalars": [ { "value": "1.597" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.599" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.615" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.018" } ], "name": "Birefringence" }, { "scalars": [ { "value": "White with pale green tint" } ], "name": "Streak" }, { "scalars": [ { "value": "2.77" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Kaolinite-Serpentine group" } ], "name": "Other" }, { "scalars": [ { "value": "Triclinic 1 pedial" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Perite", "title": "Wikipedia: Perite" } ], "names": [ "Perite" ], "chemicalFormula": "PbBiO$_{2}$Cl", "properties": [ { "scalars": [ { "value": "Halide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "03.DC.30" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.62" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.57" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "12.42" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "483.63" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "Yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Platey crystals, pseudotetragonal" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Fair on {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine" } ], "name": "Luster" }, { "scalars": [ { "value": "n$_{calculated}$2.29-2.3" } ], "name": "Refractive index" }, { "scalars": [ { "value": "Trichroic" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Yellow" } ], "name": "Streak" }, { "scalars": [ { "value": "8.16" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Orthorhombic (2/m 2/m 2/m) dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Vladimirite", "title": "Wikipedia: Vladimirite" } ], "names": [ "Vladimirite" ], "chemicalFormula": "Ca$_{5}$(HAsO$_{4}$)$_{2}$(AsO$_{4}$)$_{2}$.5H$_{2}$O", "properties": [ { "scalars": [ { "value": "Arsenate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.CJ.25" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.81" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "10.19" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "22.7" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "97.32" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "3" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "848.16" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "Pale rose, colorless, white" } ], "name": "Color" }, { "scalars": [ { "value": "As acicular/bladed crystals occurring in cross-\\xef\\xac\\x81ber veinlets, spherulitic" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Penetration" } ], "name": "Twinning" }, { "scalars": [ { "value": "Good one plane" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Sub-vitreous, silky, pearly" } ], "name": "Luster" }, { "scalars": [ { "value": "1.650-1.651" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.654-1.656" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.656-1.661" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.006-0.010" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Non-pleochroic" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.17" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 2$_{1}$/c" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Fluor-uvite", "title": "Wikipedia: Fluor-uvite" } ], "names": [ "Fluor-uvite" ], "chemicalFormula": "CaMg$_{3}$(Al$_{5}$Mg)(Si$_{6}$O$_{18}$)(BO$_{3}$)$_{3}$(OH)$_{3}$F", "properties": [ { "scalars": [ { "value": "Cyclosilicate , tourmaline group" } ], "name": "Category" }, { "scalars": [ { "value": "09.CK.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Black, greenish-black, brownish-black, brown, green, colourless" } ], "name": "Color" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None Observed" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Irregular/Uneven, Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "7.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, Resinous" } ], "name": "Luster" }, { "scalars": [ { "value": "0.018-0.029" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Weak" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Light-brown, light-green, or white" } ], "name": "Streak" }, { "scalars": [ { "value": "2.97-3.14" } ], "conditions": [ { "scalars": [ { "value": "g/cm$^3$" } ], "name": "Note" } ], "name": "Density" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Chesterite", "title": "Wikipedia: Chesterite" } ], "names": [ "Chesterite" ], "chemicalFormula": "(Mg,Fe)$_{17}$Si$_{20}$O$_{54}$(OH)$_{6}$", "properties": [ { "scalars": [ { "value": "Inosilicates" } ], "conditions": [ { "scalars": [ { "value": "multiple chains" } ], "name": "Note" } ], "name": "Category" }, { "scalars": [ { "value": "09.DF.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "18.61" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "45.3" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.29" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (V)" }, { "scalars": [ { "value": "459.64 $^{3}$" } ], "units": "$\\AA$", "name": "Unit cell (459.64 $^{3}$)" }, { "scalars": [ { "value": "2074.96" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "Colorless, pink, brown" } ], "name": "Color" }, { "scalars": [ { "value": "orthorhombic, prismatic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "(110) perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "2-2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Silky-pearly" } ], "name": "Luster" }, { "scalars": [ { "value": "1.617" } ], "name": "Refractive index ($\\alpha$)" }, { "scalars": [ { "value": "1.632" } ], "name": "Refractive index ($\\beta$)" }, { "scalars": [ { "value": "1.64" } ], "name": "Refractive index ($\\gamma$)" }, { "scalars": [ { "value": "0.023" } ], "name": "Birefringence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.23" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "weak, pink-brown" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "mm2" } ], "name": "Symmetry" }, { "scalars": [ { "value": "orthorhombic" } ], "name": "Symmetry" }, { "scalars": [ { "value": "A2$_{1}$ma" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Fluckite", "title": "Wikipedia: Fluckite" } ], "names": [ "Fluckite" ], "chemicalFormula": "CaMnH$_{2}$(AsO$_{4}$)$_{2}$.2(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Arsenate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.CB.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "8.459" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "7.613" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.968" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "82.21" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\alpha$)" }, { "scalars": [ { "value": "98.25" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "95.86" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\gamma$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless, Light-Dark Pink" } ], "name": "Color" }, { "scalars": [ { "value": "Crystals prismatic, typically radiating-spherulitic" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Triclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "(010) perfect, (100) good, (101) indistinct" } ], "name": "Cleavage" }, { "scalars": [ { "value": "3.5-4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Subvitreous, waxy" } ], "name": "Luster" }, { "scalars": [ { "value": "1.618" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.627" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.642" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.024" } ], "name": "Birefringence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.05" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "$\\bar{1}$" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P$\\bar{1}$" } ], "name": "Space group" }, { "scalars": [ { "value": "Triclinic pinacoidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Cuprospinel", "title": "Wikipedia: Cuprospinel" } ], "names": [ "Cuprospinel" ], "chemicalFormula": "CuFe$_{2}$O$_{4}$ or (Cu,Mg)Fe$_{2}$O$_{4}$", "properties": [ { "scalars": [ { "value": "Oxide mineral-Spinel group" } ], "name": "Category" }, { "scalars": [ { "value": "04.BB.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Black, gray in reflected light" } ], "name": "Color" }, { "scalars": [ { "value": "Irregular grains, laminae intergrown with hematite" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Isometric (4/m 3 2/m) Space Group: F d3m" } ], "name": "Crystal system" }, { "scalars": [ { "value": "6.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "1.8" } ], "name": "Refractive index (n)" }, { "scalars": [ { "value": "Black" } ], "name": "Streak" }, { "scalars": [ { "value": "5-5.2" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/St\u00fctzite", "title": "Wikipedia: St\u00fctzite" } ], "names": [ "St\u00fctzite" ], "chemicalFormula": "Ag$_{5-x}$Te$_{3}$ $_{(with x = 0.24 to 0.36)}$", "properties": [ { "scalars": [ { "value": "Telluride mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.BA.30e" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "13.38 c=8.45" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "7" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Dark lead-gray" } ], "name": "Color" }, { "scalars": [ { "value": "Massive, compact, granular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Hexagonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None observed" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Subconchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "8.0" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Anisotrpism in polished section: Moderate, in gray reddish brown-blue" } ], "name": "Other" }, { "scalars": [ { "value": "Hexagonal 6/m 2/m 2/m-dihexagonal dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Merenskyite", "title": "Wikipedia: Merenskyite" } ], "names": [ "Merenskyite" ], "chemicalFormula": "(Pd,Pt)(Te,Bi)$_{2}$", "properties": [ { "scalars": [ { "value": "Telluride mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.EA.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "3.978(1)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.125(2)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "1" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "White, grayish white" } ], "name": "Color" }, { "scalars": [ { "value": "Microscopic inclusions, intergrowths with other Pd-Pt minerals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "~3.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "8.547" } ], "conditions": [ { "scalars": [ { "value": "calculated" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Weak, white-grayish white in air under reflected light" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Trigonal 3m-ditrigonal pyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Minium_(mineral)", "title": "Wikipedia: Minium (mineral)" } ], "names": [ "Minium (mineral)" ], "chemicalFormula": "Pb$^{2+}$$_{2}$Pb$^{4+}$O$_{4}$", "properties": [ { "scalars": [ { "value": "Oxide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "04.BD.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "07.02.08.01" } ], "name": "Dana classification" }, { "scalars": [ { "value": "8.811(5)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "6.563(3)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Scarlet-brownish red, may have a yellowish tint" } ], "name": "Color" }, { "scalars": [ { "value": "Scaly, commonly as earthy, pulverulent masses" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Tetragonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {110} and {010}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Dull-slightly greasy" } ], "name": "Luster" }, { "scalars": [ { "value": "Yellow-orange" } ], "name": "Streak" }, { "scalars": [ { "value": "8.9-9.2" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.42" } ], "name": "Refractive index (n)" }, { "scalars": [ { "value": "Tetragonal (4/m 2/m 2/m) ditetragonal dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Grossite", "title": "Wikipedia: Grossite" } ], "names": [ "Grossite" ], "chemicalFormula": "CaAl$_{4}$O$_{7}$", "properties": [ { "scalars": [ { "value": "Oxide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "04.CC.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "07.03.02.01" } ], "name": "Dana classification" }, { "scalars": [ { "value": "12.94" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8.91" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.44" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "107.01" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless-white" } ], "name": "Color" }, { "scalars": [ { "value": "Lathlike or subhedral rounded grains in polycrystalline aggregates rimmed by melilite" } ], "conditions": [ { "scalars": [ { "value": "in meteorites" } ], "name": "Note" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.88" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.618" } ], "name": "Refractive index (n$\\alpha$)" }, { "scalars": [ { "value": "1.618" } ], "name": "Refractive index (n$\\beta$)" }, { "scalars": [ { "value": "1.652" } ], "name": "Refractive index (n$\\gamma$)" }, { "scalars": [ { "value": "0.034" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Monoclinic (2/m) prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Warikahnite", "title": "Wikipedia: Warikahnite" } ], "names": [ "Warikahnite" ], "chemicalFormula": "Zn$_{3}$(AsO$_{4}$)$_{2}$.2H$_{2}$O", "properties": [ { "scalars": [ { "value": "Arsenate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "510.04" } ], "units": "g mol$^{-1}$", "name": "Molecular weight" }, { "scalars": [ { "value": "08.CA.35" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "6.71" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8.98" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "14.53" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "Pale yellow-colorless, honey-yellow, orange" } ], "name": "Color" }, { "scalars": [ { "value": "Acicular, radial" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Triclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "[001] perfect, [010] good, [100] good" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Fracture" }, { "scalars": [ { "value": "2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, waxy" } ], "name": "Luster" }, { "scalars": [ { "value": "1.747" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.753" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.768" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.021" } ], "name": "Birefringence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "4.28" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "$\\bar{1}$" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P$\\bar{1}$" } ], "name": "Space group" }, { "scalars": [ { "value": "Triclinic pinacoidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Matlockite", "title": "Wikipedia: Matlockite" } ], "names": [ "Matlockite" ], "chemicalFormula": "PbFCl", "properties": [ { "scalars": [ { "value": "Halide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "03.DC.25" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "9.2.11.1" } ], "name": "Dana classification" }, { "scalars": [ { "value": "4.11" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "7.23" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Flattened, tabular crystals occurring as aggregates, rosettelike, radiating, hemispherical, also massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Tetragonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{001}, perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven-subconchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2.5-3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine, pearly on {001}" } ], "name": "Luster" }, { "scalars": [ { "value": "7.1-7.2" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.150" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "2.040" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "Tetragonal 4/m 2/m 2/m ditetragonal dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Tsumcorite", "title": "Wikipedia: Tsumcorite" } ], "names": [ "Tsumcorite" ], "chemicalFormula": "PbZnFe$^{2+}$(AsO$_{4}$)$_{2}$.H$_{2}$O", "properties": [ { "scalars": [ { "value": "Arsenate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "9.124" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "6.329" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "7.577" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "115.3" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "624.29" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "08.CG.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "40.02.09.01" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Yellow-brown, red-brown, orange" } ], "name": "Color" }, { "scalars": [ { "value": "Radiating, fibrous crusts" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Common, on a unknown law" } ], "name": "Twinning" }, { "scalars": [ { "value": "Good on {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "4.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.87-1.91" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.89-1.93" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.92-1.96" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "Weak, yellow-yellow-green" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Yellow" } ], "name": "Streak" }, { "scalars": [ { "value": "5.2" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Dissolves in HCl" } ], "name": "Solubility" }, { "scalars": [ { "value": "Monoclinic prismatic (2/m)" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Tranquillityite", "title": "Wikipedia: Tranquillityite" } ], "names": [ "Tranquillityite" ], "chemicalFormula": "(Fe$^{2+}$)$_{8}$Ti$_{3}$Zr$_{2}$ Si$_{3}$O$_{24}$", "properties": [ { "scalars": [ { "value": "Silicate mineral" } ], "conditions": [ { "scalars": [ { "value": "nesosilicate group" } ], "name": "Note" } ], "name": "Category" }, { "scalars": [ { "value": "9.AG.90" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "78.07.16.01" } ], "conditions": [ { "scalars": [ { "value": "Unclassified silicates" } ], "name": "Note" } ], "name": "Dana classification" }, { "scalars": [ { "value": "11.69" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "22.25" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "6" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (V)" }, { "scalars": [ { "value": "633.24" } ], "units": "$\\AA^3$", "name": "Unit cell volume" }, { "scalars": [ { "value": "Gray, dark red-brown in transmitted light" } ], "name": "Color" }, { "scalars": [ { "value": "Lath shaped grains generally found as inclusions in other minerals or interstitial" } ], "conditions": [ { "scalars": [ { "value": "<0.1% in weight" } ], "name": "Note" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "exagonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Submetalic" } ], "name": "Luster" }, { "scalars": [ { "value": "2.120" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "o" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "4.7$\\pm$0.1" } ], "conditions": [ { "scalars": [ { "value": "g/cm$^{3}$" } ], "name": "Note" } ], "name": "Density" }, { "scalars": [ { "value": "Y, Hf, Al, Cr, Nb, Nd, Mn, Ca" } ], "name": "impurities" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Ludlamite", "title": "Wikipedia: Ludlamite" } ], "names": [ "Ludlamite" ], "chemicalFormula": "(Fe,Mn,Mg)$_{3}$(PO$_{4}$)$_{2}$.4H$_{2}$O", "properties": [ { "scalars": [ { "value": "Phosphate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "08.CD.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "10.541(5)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "4.646(4)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "9.324(5)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "100.52" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Apple-green-bright green" } ], "name": "Color" }, { "scalars": [ { "value": "Tabular crystals, massive, granular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Cleavage: perfect on {001}, indistinct on {100}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "3.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, pearly on cleavage" } ], "name": "Luster" }, { "scalars": [ { "value": "Pale greenish white" } ], "name": "Streak" }, { "scalars": [ { "value": "3.12-3.19" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.650-1.653" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.669-1.675" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.688-1.697" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.038-0.044" } ], "name": "Birefringence" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 2$_{1}$/a" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Utahite", "title": "Wikipedia: Utahite" } ], "names": [ "Utahite" ], "chemicalFormula": "Cu$_{5}$Zn$_{3}$(Te$^{6+}$O$_{4}$)$_{4}$(OH)$_{8}$.7H$_{2}$O", "properties": [ { "scalars": [ { "value": "Tellurate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "07.DE.25" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "8.794" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "9.996" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.66" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "104.1" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\alpha$)" }, { "scalars": [ { "value": "90.066" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "96.3333" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\gamma$)" }, { "scalars": [ { "value": "1" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Pale blue, greenish blue" } ], "name": "Color" }, { "scalars": [ { "value": "Prismatic thin tabular-bladed crystals, as sheaves and bow tielike clusters" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Triclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "none" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle-uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "4-5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-pearly" } ], "name": "Luster" }, { "scalars": [ { "value": "Pale blue" } ], "name": "Streak" }, { "scalars": [ { "value": "5.33" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.830-1.840" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.830-1.900" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.880-1.900" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.050-0.060" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Triclinic 1 or $\\bar{1}$" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Schmiederite", "title": "Wikipedia: Schmiederite" } ], "names": [ "Schmiederite" ], "chemicalFormula": "Pb$_{2}$Cu$_{2}$(Se$^{4 +}$O3)(Se$^{6 +}$O4)(OH)$_{4}$", "properties": [ { "scalars": [ { "value": "Selenate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "07.BC.65" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "9.92" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.71" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "9.36" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "101.86" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Pale-deep Prussian blue" } ], "name": "Color" }, { "scalars": [ { "value": "Fibrous in radial clusters, may be in crusts, powdery" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Subadamantine-satiny" } ], "name": "Luster" }, { "scalars": [ { "value": "Light blue" } ], "name": "Streak" }, { "scalars": [ { "value": "5.62" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.85-1.9" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.9-1.95" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.95-2.1" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 21/m" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Semseyite", "title": "Wikipedia: Semseyite" } ], "names": [ "Semseyite" ], "chemicalFormula": "Pb$_{9}$ Sb $_{8}$ S$_{21}$", "properties": [ { "scalars": [ { "value": "ulfosalt mineral" } ], "name": "Category" }, { "scalars": [ { "value": "2.HC.10d" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "13.64" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "11.96" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "24.46" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "105.87" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Dark gray-black" } ], "name": "Color" }, { "scalars": [ { "value": "Tabular, elongated prismatic crystals, commonly twisted, rosettelike groups" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {112}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "6.15" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "C 2/c" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Gadolinium_gallium_garnet", "title": "Wikipedia: Gadolinium gallium garnet" } ], "names": [ "Gadolinium gallium garnet" ], "chemicalFormula": "Gd3Ga5O12", "properties": [ { "scalars": [ { "value": "synthetic mineral" } ], "name": "Category" }, { "scalars": [ { "value": "transparent, colorless-light brown or yellow. May also be orange or blue." } ], "name": "Color" }, { "scalars": [ { "value": "cubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "6.5" } ], "conditions": [ { "scalars": [ { "value": "other sources 7.5" } ], "name": "Note" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "vitreous-subadamantine" } ], "name": "Luster" }, { "scalars": [ { "value": "vitreous-subadamantine" } ], "name": "Polish" }, { "scalars": [ { "value": "1.970" } ], "name": "Refractive index" }, { "scalars": [ { "value": "none" } ], "name": "Birefringence" }, { "scalars": [ { "value": "none" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "moderate-strong pinkish orange in shortwave" } ], "name": "fluorescence" }, { "scalars": [ { "value": "7.05" } ], "conditions": [ { "scalars": [ { "value": "+.04,-.10" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "7.08" } ], "conditions": [ { "scalars": [ { "value": "g/cm$^{3}$" } ], "name": "Note" } ], "name": "Density" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Pimelite", "title": "Wikipedia: Pimelite" } ], "names": [ "Pimelite" ], "chemicalFormula": "Ni$_{3}$Si$_{4}$O$_{10}$(OH)$_{2}$.4H$_{2}$O", "properties": [ { "scalars": [ { "value": "Phyllosilicates" } ], "name": "Category" }, { "scalars": [ { "value": "554.5" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "8/H.09-65" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "71.3.1b.5" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Bright green, apple green, yellow-green" } ], "name": "Color" }, { "scalars": [ { "value": "Fine-grained, also fibrous" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Hexagonal space group unknown" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven-conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "2-2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Waxy" } ], "name": "Luster" }, { "scalars": [ { "value": "1.592" } ], "name": "Refractive index (N$_{x}$)" }, { "scalars": [ { "value": "1.615" } ], "name": "Refractive index (N$_{y}$)" }, { "scalars": [ { "value": "Pale green, colourless-light yellow green" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.23-2.98" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Decomposed by acids" } ], "name": "Solubility" }, { "scalars": [ { "value": "Neither radioactive nor fluorescent Expands-17.35 A using glycol. Nonmagnetic" } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Alum-(K)", "title": "Wikipedia: Alum-(K)" } ], "names": [ "Alum-(K)" ], "chemicalFormula": "KAl(SO$_{4}$)$_{2}$.12(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Sulfate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "07.CC.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "12.133" } ], "name": "Unit cell (a)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless, white" } ], "name": "Color" }, { "scalars": [ { "value": "Stalactitic, columnar, granular, massive efflorescences, rare as small octahedral crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Cubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Rare on {111}" } ], "name": "Twinning" }, { "scalars": [ { "value": "On {111} indistinct" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "2-2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.757" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.453" } ], "name": "Refractive index (n)" }, { "scalars": [ { "value": "Water soluble" } ], "name": "Solubility" }, { "scalars": [ { "value": "2/m$\\bar{3}$" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P a3" } ], "name": "Space group" }, { "scalars": [ { "value": "Isometric diploidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Huntite", "title": "Wikipedia: Huntite" } ], "names": [ "Huntite" ], "chemicalFormula": "Mg$_{3}$Ca(CO$_{3}$)$_{4}$", "properties": [ { "scalars": [ { "value": "Carbonate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "05.AB.25" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "14.04.03.01" } ], "name": "Dana classification" }, { "scalars": [ { "value": "9.505" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "7.821" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "3" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "White, lemon white" } ], "name": "Color" }, { "scalars": [ { "value": "Platy crystals, compact chalklike masses" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Subconchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "1-2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Earthy" } ], "conditions": [ { "scalars": [ { "value": "dull" } ], "name": "Note" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.696" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.622" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.615" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "3 2" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "R 32" } ], "name": "Space group" }, { "scalars": [ { "value": "Trigonal trapezohedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Wassonite", "title": "Wikipedia: Wassonite" } ], "names": [ "Wassonite" ], "chemicalFormula": "TiS", "properties": [ { "scalars": [ { "value": "Sulfide mineral" } ], "name": "Category" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Abramovite", "title": "Wikipedia: Abramovite" } ], "names": [ "Abramovite" ], "chemicalFormula": "Pb$_{2}$SnInBiS$_{7}$", "properties": [ { "scalars": [ { "value": "Sulfides and Sulfosalts" } ], "name": "Category" }, { "scalars": [ { "value": "03.01.03.03" } ], "name": "Dana classification" }, { "scalars": [ { "value": "02.HF.25a" } ], "conditions": [ { "scalars": [ { "value": "8th edition" } ], "name": "Note" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "23.4" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.77" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.83" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "89.1" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\alpha$)" }, { "scalars": [ { "value": "89.9" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "91.5" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\gamma$)" }, { "scalars": [ { "value": "1066.44" } ], "units": "g/mol", "name": "Molecular weight" }, { "scalars": [ { "value": "Silver gray" } ], "name": "Color" }, { "scalars": [ { "value": "Encrustations-Forms crust-like aggregates on matrix" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Triclinic-Pinacoidal Space group=P$\\bar{1}$" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {100}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Lamellar on {100}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Black" } ], "name": "Streak" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Taaffeite", "title": "Wikipedia: Taaffeite" } ], "names": [ "Taaffeite" ], "chemicalFormula": "BeMgAl$_{4}$O$_{8}$", "properties": [ { "scalars": [ { "value": "Oxide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "04.FC.25" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Colorless, greyish violet, violet red, red, greenish, light green, pink violet, mauve" } ], "name": "Color" }, { "scalars": [ { "value": "Prismatic, alluvial grains" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Hexagonal, 6/mmm (6/m 2/m 2/m)" } ], "name": "Crystal system" }, { "scalars": [ { "value": "By reflection on ?" } ], "conditions": [ { "scalars": [ { "value": "0001" } ], "name": "Note" } ], "name": "Twinning" }, { "scalars": [ { "value": "Imperfect/fair/absent" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "8-8.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.722" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.777" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.055" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Weak" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.60-3.61" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Krotite", "title": "Wikipedia: Krotite" } ], "names": [ "Krotite" ], "chemicalFormula": "CaAl$_{2}$O$_{4}$", "properties": [ { "scalars": [ { "value": "Oxide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "8.6996(3)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8.0994(3)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "15.2170(11)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "90.188(6)" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "Colorless" } ], "name": "Color" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "~ 6.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "2.94" } ], "conditions": [ { "scalars": [ { "value": "calculated" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "P2$_{1}$/n" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic 2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Dmitryivanovite", "title": "Wikipedia: Dmitryivanovite" } ], "names": [ "Dmitryivanovite" ], "chemicalFormula": "CaAl$_{2}$O$_{4}$", "properties": [ { "scalars": [ { "value": "Oxide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "4.BC.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "7.95" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8.62" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "10.25" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "93.1" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "Colorless" } ], "name": "Color" }, { "scalars": [ { "value": "Phase in CAI of 470 CH3 chondrite as subhedral grains" } ], "conditions": [ { "scalars": [ { "value": "NWA470" } ], "name": "Note" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Monoclinic 2/m prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Gregoryite", "title": "Wikipedia: Gregoryite" } ], "names": [ "Gregoryite" ], "chemicalFormula": "(Na$_{2}$,K$_{2}$,Ca)CO$_{3}$", "properties": [ { "scalars": [ { "value": "Carbonate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "05.AA.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.21" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "6.58" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Brown, milky white" } ], "name": "Color" }, { "scalars": [ { "value": "Phenocrysts in carbonatite lava" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Hexagonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.27" } ], "conditions": [ { "scalars": [ { "value": "calculated" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Soluble in water" } ], "name": "Solubility" }, { "scalars": [ { "value": "6mm" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 6$_{3}$mc" } ], "name": "Space group" }, { "scalars": [ { "value": "Hexagonal dihexagonal pyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Mereheadite", "title": "Wikipedia: Mereheadite" } ], "names": [ "Mereheadite" ], "chemicalFormula": "Pb$_{47}$Cl$_{25}$(OH)$_{13}$O$_{24}$(CO$_{3}$)(BO$_{3}$)$_{2}$", "properties": [ { "scalars": [ { "value": "Halide" } ], "name": "Category" }, { "scalars": [ { "value": "03.DC.45" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "17.372(1)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "27.9419(19)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "10.6661(6)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "Pale yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "3.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, resinous" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.190" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "2.280" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.090" } ], "name": "Birefringence" }, { "scalars": [ { "value": "m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Chloroxiphite", "title": "Wikipedia: Chloroxiphite" } ], "names": [ "Chloroxiphite" ], "chemicalFormula": "Pb$_{3}$CuO$_{2}$Cl$_{2}$(OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Halide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "03.DB.30" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "6.6972(8)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.7538(5)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "10.4686(14)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "97.747(10)" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "Dull olive green-pistachio-green" } ], "name": "Color" }, { "scalars": [ { "value": "Elongated, flatenned, striated and often curved crystals and groups" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {$\\bar{1}$01}, distinct on {100}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Very brittle, friable" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine, resinous" } ], "name": "Luster" }, { "scalars": [ { "value": "Light green yellow" } ], "name": "Streak" }, { "scalars": [ { "value": "6.76-6.93" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.160" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "2.240" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "2.250" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.090" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Visible: Y=yellowish brown, Z=bright emerald-green" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 21/m" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Telluric_iron", "title": "Wikipedia: Telluric iron" } ], "names": [ "Telluric iron" ], "chemicalFormula": "Fe", "properties": [ { "scalars": [ { "value": "Native element mineral" } ], "name": "Category" }, { "scalars": [ { "value": "1.AE.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "1.1.17.1" } ], "name": "Dana classification" }, { "scalars": [ { "value": "2.8664" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Steel-gray-iron-black, white in polished section" } ], "name": "Color" }, { "scalars": [ { "value": "Massive, as interstitial blebs, rare as crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Cubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "On {111} and on {112}" } ], "name": "Twinning" }, { "scalars": [ { "value": "{001}, with parting on {112}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Hackly" } ], "name": "Fracture" }, { "scalars": [ { "value": "Malleable" } ], "name": "Tenacity" }, { "scalars": [ { "value": "4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "7.3-7.87" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "4/m$\\bar{3}$2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "I m3m" } ], "name": "Space group" }, { "scalars": [ { "value": "Isometric hexoctahedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Imogolite", "title": "Wikipedia: Imogolite" } ], "names": [ "Imogolite" ], "chemicalFormula": "Al$_{2}$SiO$_{3}$(OH)$_{4}$", "properties": [ { "scalars": [ { "value": "Clay mineral" } ], "name": "Category" }, { "scalars": [ { "value": "09.ED.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "White, blue, green, brown, black" } ], "name": "Color" }, { "scalars": [ { "value": "Conchoidal-earthy masses of microscopic threadlike particles and bundles of fine tubes, each about 20 $\\AA$ in diameter" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Tetragonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "2-3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, resinous, waxy" } ], "name": "Luster" }, { "scalars": [ { "value": "2.7" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.47-1.51" } ], "name": "Refractive index (n)" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Jalpaite", "title": "Wikipedia: Jalpaite" } ], "names": [ "Jalpaite" ], "chemicalFormula": "Ag$_{3}$CuS$_{2}$", "properties": [ { "scalars": [ { "value": "Sulfide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.BA.45" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "8.67" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "11.75" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Pale metallic gray" } ], "name": "Color" }, { "scalars": [ { "value": "Irregular and foliated masses, inclusions in other minerals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Tetragonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Prismatic, good" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Subconchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Sectile, malleable" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2-2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Black" } ], "name": "Streak" }, { "scalars": [ { "value": "6.82-6.85" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Distinct in oil, brownish gray-pure gray" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "4/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "I 4$_{1}$/amd" } ], "name": "Space group" }, { "scalars": [ { "value": "Tetragonal ditetragonal dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Guettardite", "title": "Wikipedia: Guettardite" } ], "names": [ "Guettardite" ], "chemicalFormula": "Pb(Sb,As)$_{2}$S$_{4}$", "properties": [ { "scalars": [ { "value": "Sulfosalt mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.HC.05a" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "20.17" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "7.94" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "8.72" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "101.12" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Grayish black, white with reddish internal re\\xef\\xac\\x82ections in polished section" } ], "name": "Color" }, { "scalars": [ { "value": "Acicular crystals and anhedral grains" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Polysynthetic twinning on {100}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Very brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Brown" } ], "name": "Streak" }, { "scalars": [ { "value": "5.2" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Relatively strong" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 2$_{1}$/a" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Rosick\u00fdite", "title": "Wikipedia: Rosick\u00fdite" } ], "names": [ "Rosick\u00fdite" ], "chemicalFormula": "S", "properties": [ { "scalars": [ { "value": "Native element mineral" } ], "name": "Category" }, { "scalars": [ { "value": "1.CC.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "8.455(3)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "13.052(2)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "9.267(3)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "124.89(3)" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless-pale yellow, green tinge" } ], "name": "Color" }, { "scalars": [ { "value": "Equidimensional-thin tabular crystals, efflorescences" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "On {101}, with twin lamellae parallel-[010]" } ], "name": "Twinning" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "2-3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine" } ], "name": "Luster" }, { "scalars": [ { "value": "2.07" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 2/c" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Larnite", "title": "Wikipedia: Larnite" } ], "names": [ "Larnite" ], "chemicalFormula": "Ca$_{2}$SiO$_{4}$", "properties": [ { "scalars": [ { "value": "Silicate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "9.AD.05 Nesosilicates" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.5" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "6.74" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "9.29" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "94.59" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "White-gray" } ], "name": "Color" }, { "scalars": [ { "value": "Flattened anhedral grains, massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Common, polysynthetic parallel-{100}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Good on {100}, imperfect on {010}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.28-3.33" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.707" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.715" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.730" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.023" } ], "name": "Birefringence" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 2$_{1}$/n" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Ellsworthite", "title": "Wikipedia: Ellsworthite" } ], "names": [ "Ellsworthite" ], "chemicalFormula": "(Ca,U)$_{2}$(Ti,Nb,Ta)$_{2}$O$_{6}$(OH)", "properties": [ { "scalars": [ { "value": "Pyrochlore group" } ], "name": "Category" }, { "scalars": [ { "value": "Amber yellow-dark brown" } ], "name": "Color" }, { "scalars": [ { "value": "conchoidal fracture" } ], "name": "Fracture" }, { "scalars": [ { "value": "isometric" } ], "name": "Crystal system" }, { "scalars": [ { "value": "yellow-brownish" } ], "name": "Streak" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Translucent-opaque" } ], "name": "Other" }, { "scalars": [ { "value": "Cubic 4/m 3* 2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Lipscombite", "title": "Wikipedia: Lipscombite" } ], "names": [ "Lipscombite" ], "chemicalFormula": "(Fe$^{2+}$,Mn$^{2+}$)(Fe$^{3+}$)$_{2}$(PO$_{4}$)$_{2}$(OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Phosphate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.BB.90" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "41.10.02.01" } ], "name": "Dana classification" }, { "scalars": [ { "value": "5.37" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "12.81" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "391.27" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "Green gray, olive green, black." } ], "name": "Color" }, { "scalars": [ { "value": "Tetragonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "3.68" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Zinclipscombite", "title": "Wikipedia: Zinclipscombite" } ], "names": [ "Zinclipscombite" ], "chemicalFormula": "Zn(Fe$^{3+}$)$_{2}$(PO$_{4}$)$_{2}$(OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Phosphate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "08.BB.90" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "41.10.02.02" } ], "name": "Dana classification" }, { "scalars": [ { "value": "7.242" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "13.125" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "386.04" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "Dark green-brown" } ], "name": "Color" }, { "scalars": [ { "value": "Tetragonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Fracture" }, { "scalars": [ { "value": "5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "Light green-tan" } ], "name": "Streak" }, { "scalars": [ { "value": "3.65" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.755" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.795" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.0400" } ], "name": "Birefringence" }, { "scalars": [ { "value": "4 2 2" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 4$_{3}$2$_{1}$2" } ], "name": "Space group" }, { "scalars": [ { "value": "Tetragonal trapezohedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Tripuhyite", "title": "Wikipedia: Tripuhyite" } ], "names": [ "Tripuhyite" ], "chemicalFormula": "FeSbO$_{4}$", "properties": [ { "scalars": [ { "value": "Antimonate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "04.DB.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "4.63" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "9.14" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Yellowish brown, lemon-yellow, brown-black" } ], "name": "Color" }, { "scalars": [ { "value": "Fibrous-\\xef\\xac\\x81ne-grained aggregates" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Tetragonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "6-7" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Dull-earthy" } ], "name": "Luster" }, { "scalars": [ { "value": "Canary-yellow-dark brown with a greenish tinge" } ], "name": "Streak" }, { "scalars": [ { "value": "5.82" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.190" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "2.330" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.140" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Antiferromagnetic" } ], "name": "Other" }, { "scalars": [ { "value": "4/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 4$_{1}$/mnm" } ], "name": "Space group" }, { "scalars": [ { "value": "Tetragonal-ditetragonal dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Bursaite", "title": "Wikipedia: Bursaite" } ], "names": [ "Bursaite" ], "chemicalFormula": "Pb$_{5}$Bi$_{4}$S$_{11}$", "properties": [ { "scalars": [ { "value": "Sulfosalt mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.JB.40a" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "2177.65" } ], "name": "Molecular weight" }, { "scalars": [ { "value": "Gray-white" } ], "name": "Color" }, { "scalars": [ { "value": "Prismatic crystals with platy, long grains" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic 2/m2/m2/m" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Lamellar twinning on (001), sometimes (110) plane" } ], "name": "Twinning" }, { "scalars": [ { "value": "Tabular on (100)-good" } ], "name": "Cleavage" }, { "scalars": [ { "value": "2.5-3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "6.2" } ], "conditions": [ { "scalars": [ { "value": "g/cm$^{3}$" } ], "name": "Note" } ], "name": "Density" }, { "scalars": [ { "value": "Weak in air, stronger in oil." } ], "name": "Birefringence" }, { "scalars": [ { "value": "Weak, whitish blue-brownish gray" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Not radioactive" } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Icosahedrite", "title": "Wikipedia: Icosahedrite" } ], "names": [ "Icosahedrite" ], "chemicalFormula": "Al$_{63}$Cu$_{24}$Fe$_{13}$", "properties": [ { "scalars": [ { "value": "Native element mineral, alloy" } ], "name": "Category" }, { "scalars": [ { "value": "Dark grey, black" } ], "name": "Color" }, { "scalars": [ { "value": "Subhedral-anhedral grains" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Irregular" } ], "name": "Fracture" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Grey" } ], "name": "Streak" }, { "scalars": [ { "value": "" } ], "name": "Symmetry" }, { "scalars": [ { "value": "$\\bar{5}$ $\\bar{3}$m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "Fm $\\bar{3}$ $\\bar{5}$" } ], "name": "Space group" }, { "scalars": [ { "value": "Icosahedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Sinoite", "title": "Wikipedia: Sinoite" } ], "names": [ "Sinoite" ], "chemicalFormula": "Si$_{2}$N$_{2}$O", "properties": [ { "scalars": [ { "value": "Silicate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "01.DB.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "1.3.9.1" } ], "name": "Dana classification" }, { "scalars": [ { "value": "8.84" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.47" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "4.83" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "From colorless-light gray" } ], "name": "Color" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.740" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.855" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.855" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.115" } ], "name": "Birefringence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.83" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "mm2" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "Cmc2$_{1}$" } ], "name": "Space group" }, { "scalars": [ { "value": "Orthorhombic-pyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Arseniosiderite", "title": "Wikipedia: Arseniosiderite" } ], "names": [ "Arseniosiderite" ], "chemicalFormula": "Ca$_{2}$Fe$^{3+}$$_{3}$(AsO$_{4}$)$_{3}$O$_{2}$.3H$_{2}$O", "properties": [ { "scalars": [ { "value": "Arsenate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "766.50" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "17.76" } ], "name": "Unit cell ( a)" }, { "scalars": [ { "value": "19.53" } ], "name": "Unit cell (b)" }, { "scalars": [ { "value": "11.3" } ], "name": "Unit cell (c)" }, { "scalars": [ { "value": "12" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "08.DH.30 08" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "42.09.02.03" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Bronze brown, yellow-black" } ], "name": "Color" }, { "scalars": [ { "value": "Fibrous" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic-Prismatic, H-M symbol (2/m), space group A2/a" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{100} good" } ], "name": "Cleavage" }, { "scalars": [ { "value": "4.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Submetallic" } ], "name": "Luster" }, { "scalars": [ { "value": "1.815" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.898" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.898" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.083" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Ochraceous" } ], "name": "Streak" }, { "scalars": [ { "value": "3.5-3.9" }, { "value": "" } ], "conditions": [ { "scalars": [ { "value": "average=3.7" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Non-fluorescent" } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Allanpringite", "title": "Wikipedia: Allanpringite" } ], "names": [ "Allanpringite" ], "chemicalFormula": "Fe$^{3+}$$_{3}$(PO$_{4}$)$_{2}$(OH)$_{3}$.5H$_{2}$O", "properties": [ { "scalars": [ { "value": "Phosphate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "9.777" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "7.358" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "17.83" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "92.19" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "498.07" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "08.DC.50" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "42.10.02.02" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Pale brownish yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Acicular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "{hk0} perfect, {010} good" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Irregular/uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.662" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.675" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.747" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.085" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Pale yellowish white" } ], "name": "Streak" }, { "scalars": [ { "value": "2.54" }, { "value": "2.583" } ], "conditions": [ { "scalars": [ { "value": "meas." }, { "value": "calc." } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P2$_{1}$/n" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic-prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Stannoidite", "title": "Wikipedia: Stannoidite" } ], "names": [ "Stannoidite" ], "chemicalFormula": "Cu$_{6}$$^{+}$Cu$_{2}$$^{2+}$(Fe$^{2+}$,Zn)$_{3}$Sn$_{2}$S$_{12}$", "properties": [ { "scalars": [ { "value": "Sulfide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "10.76" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.4" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "16.09" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "02.CB.15c" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Brass brown" } ], "name": "Color" }, { "scalars": [ { "value": "Uniformly indistinguishable crystals forming large masses" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal-uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Brown gray" } ], "name": "Streak" }, { "scalars": [ { "value": "4.29" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Pearson symbol oI50" } ], "name": "Symmetry" }, { "scalars": [ { "value": "I222 No. 23" } ], "name": "Space group" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Kesterite", "title": "Wikipedia: Kesterite" } ], "names": [ "Kesterite" ], "chemicalFormula": "Cu$_{2}$(Zn,Fe)SnS$_{4}$", "properties": [ { "scalars": [ { "value": "Sulfide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "5.427" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "10.871" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "02.CB.15a" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Greenish black" } ], "name": "Color" }, { "scalars": [ { "value": "Massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Tetragonal (pseudocubic)" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "4.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Black" } ], "name": "Streak" }, { "scalars": [ { "value": "4.54-4.59" }, { "value": "4.524" } ], "conditions": [ { "scalars": [ { "value": "meas." }, { "value": "calc." } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "$\\bar{4}$" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "$\\bar{4}$" } ], "name": "Space group" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Strengite", "title": "Wikipedia: Strengite" } ], "names": [ "Strengite" ], "chemicalFormula": "FePO$_{4}$ . 2H$_{2}$O", "properties": [ { "scalars": [ { "value": "08.CD.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "40.04.01.02" } ], "name": "Dana classification" }, { "scalars": [ { "value": "186.85" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "Colorless, pale violet, deep violet, red, carmine red, greenish white" } ], "name": "Color" }, { "scalars": [ { "value": "Botryoidal, radial, spherical" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{010} Good, {001} Poor" } ], "name": "Cleavage" }, { "scalars": [ { "value": "3.5-4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.84" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.87" } ], "conditions": [ { "scalars": [ { "value": "g/cm$^3$" } ], "name": "Note" } ], "name": "Density" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Stibarsen", "title": "Wikipedia: Stibarsen" } ], "names": [ "Stibarsen" ], "chemicalFormula": "AsSb", "properties": [ { "scalars": [ { "value": "Arsenic mineral" } ], "name": "Category" }, { "scalars": [ { "value": "0.4025" } ], "units": "nm", "name": "Unit cell (a)" }, { "scalars": [ { "value": "1.084" } ], "units": "nm", "name": "Unit cell (c)" }, { "scalars": [ { "value": "6" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "White, gray, grayish white, reddish white" } ], "name": "Color" }, { "scalars": [ { "value": "Reniform \"" } ], "conditions": [ { "scalars": [ { "value": "kidney like\"" } ], "name": "Note" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "3-4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "grayish-black" } ], "name": "Streak" }, { "scalars": [ { "value": "5.8-6.2" }, { "value": "6.37" } ], "conditions": [ { "scalars": [ { "value": "meas." }, { "value": "calc." } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Non-fluorescent, nonmagnetic" } ], "name": "Other" }, { "scalars": [ { "value": "$\\bar{3}$m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "$\\bar{3}$m No. 166" } ], "name": "Space group" }, { "scalars": [ { "value": "Hexagonal (rhombohedral)" } ], "name": "Symmetry" }, { "scalars": [ { "value": "Pearson symbolhR6" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Yogo_sapphire", "title": "Wikipedia: Yogo sapphire" } ], "names": [ "Yogo sapphire" ], "chemicalFormula": "Aluminium oxide Al2O3", "properties": [ { "scalars": [ { "value": "Oxide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "Cornflower blue-purple" } ], "name": "Color" }, { "scalars": [ { "value": "Hexagonal, rhombohedral, prismatic or dipyramidal" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "Hexagonal, Symbol ($\\bar{3}$2/m), Space groupR$\\bar{3}$c" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Lamellar" } ], "name": "Twinning" }, { "scalars": [ { "value": "Partings on {0001} and {10$\\bar{1}$1}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven-conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "9.0" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine-vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.767-1.772" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.759-1.763" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "Birefringence" } ], "name": "Refractive index" }, { "scalars": [ { "value": "0.008" } ], "name": "Refractive index" }, { "scalars": [ { "value": "Weak" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "3.98-4.10" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "" } ], "conditions": [ { "scalars": [ { "value": "5.0-6.6" } ], "name": "Note" } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Laurionite", "title": "Wikipedia: Laurionite" } ], "names": [ "Laurionite" ], "chemicalFormula": "PbCl(OH)", "properties": [ { "scalars": [ { "value": "Halide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "3.DC.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "7.111" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "9.6987" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "4.0203" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless, white" } ], "name": "Color" }, { "scalars": [ { "value": "Elongated tabular prismatic crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Distinct on {101}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Flexible" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3-3.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine, pearly" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "6.241" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.077" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "2.116" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "2.158" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.081" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Sleight in cold water" } ], "name": "Solubility" }, { "scalars": [ { "value": "2/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "Pnam" } ], "name": "Space group" }, { "scalars": [ { "value": "Orthorhombic dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Chrisstanleyite", "title": "Wikipedia: Chrisstanleyite" } ], "names": [ "Chrisstanleyite" ], "chemicalFormula": "Ag$_{2}$Pd$_{3}$Se$_{4}$", "properties": [ { "scalars": [ { "value": "Selenide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "02.BC.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "833.49" } ], "units": "gm", "name": "Molecular weight" }, { "scalars": [ { "value": "Grey, silvery grey" } ], "name": "Color" }, { "scalars": [ { "value": "aggregates and microscopic crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic 2/m" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Fine polysynthetic and parquetlike" } ], "name": "Twinning" }, { "scalars": [ { "value": "no prominent cleavage" } ], "name": "Cleavage" }, { "scalars": [ { "value": "slight fracture" } ], "name": "Fracture" }, { "scalars": [ { "value": "brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "very light-green-grey buff" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "black" } ], "name": "Streak" }, { "scalars": [ { "value": "3.6" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "8.31" } ], "name": "Density" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Maricite", "title": "Wikipedia: Maricite" } ], "names": [ "Maricite" ], "chemicalFormula": "NaFe$^{2+}$PO$_{4}$", "properties": [ { "scalars": [ { "value": "Phosphate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "08.AC.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "6.867" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8.989" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.049" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Dark gray, brown-pale brown, nearly colorless" } ], "name": "Color" }, { "scalars": [ { "value": "Radial aggregates, nodular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None observed" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Irregular/uneven, splintery" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "4-4.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Sub-vitreous, greasy" } ], "name": "Luster" }, { "scalars": [ { "value": "White-light gray white" } ], "name": "Streak" }, { "scalars": [ { "value": "3.66" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.676" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.695" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.698" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.022" } ], "name": "Birefringence" }, { "scalars": [ { "value": "None" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Not fluorescent" } ], "name": "fluorescence" }, { "scalars": [ { "value": "2/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "Pmnb" } ], "name": "Space group" }, { "scalars": [ { "value": "Orthorhombic dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Paulscherrerite", "title": "Wikipedia: Paulscherrerite" } ], "names": [ "Paulscherrerite" ], "chemicalFormula": "UO$_{2}$(OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Oxide minerals, , uranyl hydroxides" } ], "name": "Category" }, { "scalars": [ { "value": "04.GA.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Canary yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Microcrystalline powder" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Undetermined" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Undetermined" } ], "name": "Fracture" }, { "scalars": [ { "value": "Undetermined" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Yellow" } ], "name": "Streak" }, { "scalars": [ { "value": "6.66 g/cm$^{3}$" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "none" } ], "name": "fluorescence" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Perhamite", "title": "Wikipedia: Perhamite" } ], "names": [ "Perhamite" ], "chemicalFormula": "Ca$_{3}$Al$_{7}$(SiO$_{4}$)$_{3}$(PO$_{4}$)$_{4}$(OH)$_{3}$.16.5(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Phosphate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.DO.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "43.5.10.1" } ], "name": "Dana classification" }, { "scalars": [ { "value": "7.021" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "20.218" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "Colourless, white, light brown, orange" } ], "name": "Color" }, { "scalars": [ { "value": "Spherulitic masses of platy crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "imperfect/fair" } ], "name": "Cleavage" }, { "scalars": [ { "value": "5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, sub vitreous, pearly" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.53" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Insoluble" } ], "name": "Solubility" }, { "scalars": [ { "value": "$\\bar{3}$ 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P$\\bar{3}$m1" } ], "name": "Space group" }, { "scalars": [ { "value": "Hexagonal Scalenohedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Blossite", "title": "Wikipedia: Blossite" } ], "names": [ "Blossite" ], "chemicalFormula": "Cu$^{2+}$$_{2}$V$^{5+}$$_{2}$O$_{7}$", "properties": [ { "scalars": [ { "value": "Vanadate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "8.FA.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "20.676(6)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8.392(3)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.446(2)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Black, white in reflected light, red-brown internal reflections" } ], "name": "Color" }, { "scalars": [ { "value": "Anhedral crystals and intergrowths" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Red brown" } ], "name": "Streak" }, { "scalars": [ { "value": "3.95-3.97 4.05" } ], "conditions": [ { "scalars": [ { "value": "measured on synthetic material" }, { "value": "calculated" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.05" } ], "name": "Refractive index" }, { "scalars": [ { "value": "Bireflectance: weak-moderate: cream-white shades" } ], "name": "Birefringence" }, { "scalars": [ { "value": "mm2" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "F dd2" } ], "name": "Space group" }, { "scalars": [ { "value": "Orthorhombic pyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Satterlyite", "title": "Wikipedia: Satterlyite" } ], "names": [ "Satterlyite" ], "chemicalFormula": "(Fe$^{2+}$,Mg,Fe$^{3+}$)$_{2}$(PO$_{4}$)(OH)", "properties": [ { "scalars": [ { "value": "Phosphate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.BB.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "11.35" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.04" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "6" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Light brown-light yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Aggregate, nodular and radial" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "4.5-5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Pale yellow" } ], "name": "Streak" }, { "scalars": [ { "value": "3.68" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.721" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.719" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.002" } ], "name": "Birefringence" }, { "scalars": [ { "value": "3m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 3$_{1}$m" } ], "name": "Space group" }, { "scalars": [ { "value": "Trigonal ditrigonal pyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Jimthompsonite", "title": "Wikipedia: Jimthompsonite" } ], "names": [ "Jimthompsonite" ], "chemicalFormula": "(Mg,Fe$^{2+}$)$_{5}$Si$_{6}$O$_{16}$(OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Inosilicates" } ], "name": "Category" }, { "scalars": [ { "value": "09.DF.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "18.626" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "27.23" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.297" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless-very light pinkish brown" } ], "name": "Color" }, { "scalars": [ { "value": "Radiating sprays and fibrous intergrowths" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {210} with 38$^{\\circ}$ and 142$^{\\circ}$ intersecting angle" } ], "name": "Cleavage" }, { "scalars": [ { "value": "2-2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "3.02" } ], "conditions": [ { "scalars": [ { "value": "calculated" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.605" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.626" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.633" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.028" } ], "name": "Birefringence" }, { "scalars": [ { "value": "2/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P bca" } ], "name": "Space group" }, { "scalars": [ { "value": "Orthorhombic dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Penikisite", "title": "Wikipedia: Penikisite" } ], "names": [ "Penikisite" ], "chemicalFormula": "Ba(Mg,Fe,Ca)Al$_{2}$(PO$_{4}$)$_{2}$(OH)$_{3}$", "properties": [ { "scalars": [ { "value": "Phosphate mineral, Bjarebyite group" } ], "name": "Category" }, { "scalars": [ { "value": "08.BH.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Delafossite", "title": "Wikipedia: Delafossite" } ], "names": [ "Delafossite" ], "chemicalFormula": "CuFeO$_{2}$", "properties": [ { "scalars": [ { "value": "Oxide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "04.AB.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "3.04" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "17.12" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "3" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Black, pale brownish rose in re\\xef\\xac\\x82ected light" } ], "name": "Color" }, { "scalars": [ { "value": "Tabular-equant crystals, botryoidal crusts, spherulitic, powdery, massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Contact twins on {0001}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Imperfect on {10$\\bar{1}$1}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Black" } ], "name": "Streak" }, { "scalars": [ { "value": "5.41" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Distinct, O=pale golden brown, E=rose-brown" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Weakly magnetic" } ], "name": "Other" }, { "scalars": [ { "value": "$\\bar{3}$2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "R$\\bar{3}$m" } ], "name": "Space group" }, { "scalars": [ { "value": "Trigonal hexagonal scalenohedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Weeksite", "title": "Wikipedia: Weeksite" } ], "names": [ "Weeksite" ], "chemicalFormula": "K$_{2}$(UO$_{2}$)$_{2}$Si$_{6}$O$_{15}$.4(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Silicate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "09.AK.30" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "14.26" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "35.88" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "14.2" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "16" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Occurs as acicular-elongated bladed crystals, flattened on {010}, also as radiating fibrous clusters and spherulites" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic, pseudotetragonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Distinct prismatic" } ], "name": "Cleavage" }, { "scalars": [ { "value": "1-2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Waxy-silky" } ], "name": "Luster" }, { "scalars": [ { "value": "Yellow" } ], "name": "Streak" }, { "scalars": [ { "value": "4.1" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.596" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.603" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.606" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.010" } ], "name": "Birefringence" }, { "scalars": [ { "value": "X=colorless, Y=pale yellow-green, Z=yellow-green" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Radioactive greater than 70 Bq/g" } ], "name": "Other" }, { "scalars": [ { "value": "2/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "C mmb" } ], "name": "Space group" }, { "scalars": [ { "value": "Orthorhombic dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Becquerelite", "title": "Wikipedia: Becquerelite" } ], "names": [ "Becquerelite" ], "chemicalFormula": "Ca(UO$_{2}$)$_{6}$O$_{4}$(OH)$_{6}$.8(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Oxide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "04.GB.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "13.8378" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "12.3781" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "14.9238" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Tabular prismatic striated crystals exhibiting pseudohexagonal outline, coatings and \\xef\\xac\\x81ne-grained aggregates" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {001}, imperfect on {101}, {010} and {110}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine-greasy" } ], "name": "Luster" }, { "scalars": [ { "value": "Yellow" } ], "name": "Streak" }, { "scalars": [ { "value": "5.09-5.2" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.725-1.735" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.815-1.825" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.825-1.830" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.100" } ], "name": "Birefringence" }, { "scalars": [ { "value": "X=colourless-pale yellow, Y=Z=yellow-deep yellow" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Commonly contains lead" } ], "name": "impurities" }, { "scalars": [ { "value": "Radioactive" } ], "name": "Other" }, { "scalars": [ { "value": "mm2" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "Pn2$_{1}$a" } ], "name": "Space group" }, { "scalars": [ { "value": "Orthorhombic pyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Uranocircite", "title": "Wikipedia: Uranocircite" } ], "names": [ "Uranocircite" ], "chemicalFormula": "Ba(UO$_{2}$)$_{2}$(PO$_{4}$)$_{2}$.10H$_{2}$O", "properties": [ { "scalars": [ { "value": "Phosphate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "08.EB.05" } ], "name": "Strunz classification" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Billietite", "title": "Wikipedia: Billietite" } ], "names": [ "Billietite" ], "chemicalFormula": "Ba(UO$_{2}$)$_{6}$O$_{4}$(OH)$_{6}$.8H$_{2}$O", "properties": [ { "scalars": [ { "value": "Oxide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "04.GB.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.7.1.3" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Yellow-golden-yellow, amber-yellow, orange-yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {001}, imperfect on {110} and {010}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "Adamantine" } ], "name": "Luster" }, { "scalars": [ { "value": "5.28-5.36" } ], "conditions": [ { "scalars": [ { "value": "g/cm$^{3}$" } ], "name": "Note" } ], "name": "Density" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Soddyite", "title": "Wikipedia: Soddyite" } ], "names": [ "Soddyite" ], "chemicalFormula": "(UO$_{2}$)$_{2}$SiO$_{4}$.2H$_{2}$O", "properties": [ { "scalars": [ { "value": "Nesosilicates" } ], "name": "Category" }, { "scalars": [ { "value": "09.AK.05" } ], "name": "Strunz classification" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Parsonsite", "title": "Wikipedia: Parsonsite" } ], "names": [ "Parsonsite" ], "chemicalFormula": "Pb$_{2}$(UO$_{2}$)(PO$_{4}$)$_{2}$.2H$_{2}$O", "properties": [ { "scalars": [ { "value": "Phosphate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "08.EA.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Triclinic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Liebigite", "title": "Wikipedia: Liebigite" } ], "names": [ "Liebigite" ], "chemicalFormula": "Ca$_{2}$(UO$_{2}$)(CO$_{3}$)$_{3}$.11H$_{2}$O", "properties": [ { "scalars": [ { "value": "Carbonate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "05.ED.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "16.699" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "17.557" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "13.697" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Rare as short prismatic crystals, scaly or granular, in aggregates, crusts, and films" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Distinct on {100}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2.5-3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, pearly" } ], "name": "Luster" }, { "scalars": [ { "value": "2.41" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.497" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.502" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.539" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.042" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Visible: X=nearly colourless Y=Z=light yellowish green" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Strong green-blue-green under short and long wave UV" } ], "name": "fluorescence" }, { "scalars": [ { "value": "mm2" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "Bba2" } ], "name": "Space group" }, { "scalars": [ { "value": "Orthorhombic pyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Haiweeite", "title": "Wikipedia: Haiweeite" } ], "names": [ "Haiweeite" ], "chemicalFormula": "Ca[(UO$_{2}$)$_{2}$Si$_{5}$O$_{12}$(OH)$_{2}$].3(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Nesosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "9.AK.25" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "53.3.2.2" } ], "name": "Dana classification" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Hambergite", "title": "Wikipedia: Hambergite" } ], "names": [ "Hambergite" ], "chemicalFormula": "Be$_{2}$BO$_{3}$OH", "properties": [ { "scalars": [ { "value": "Borate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "06.AB.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "9.71" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "12.2" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "4.42" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless, pale gray, pale yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Prismatic crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "On {110}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {010}, good on {100}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "7.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.347-2.372" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.554-1.560" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.587-1.591" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.628-1.631" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.074" } ], "name": "Birefringence" }, { "scalars": [ { "value": "dipyramidal" } ], "name": "Symmetry" }, { "scalars": [ { "value": "2/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P bca" } ], "name": "Space group" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Groutite", "title": "Wikipedia: Groutite" } ], "names": [ "Groutite" ], "chemicalFormula": "Mn$^{3+}$O(OH)", "properties": [ { "scalars": [ { "value": "Oxide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "04.FD.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "4.56" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "10.7" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "2.87" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Jet-black" } ], "name": "Color" }, { "scalars": [ { "value": "Wedge or lens-shaped crystals, acicular, striated prisms" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Reported, unknown law" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {010}, less perfect on {100}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3.5-4.0" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Brilliant submetallic-adamantine" } ], "name": "Luster" }, { "scalars": [ { "value": "Dark brown" } ], "name": "Streak" }, { "scalars": [ { "value": "4.144" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.100-2.200" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "2.100" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "Very strong, X=very dark brown-black, Y=yellowish brown" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "2/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "Pbnm" } ], "name": "Space group" }, { "scalars": [ { "value": "Orthorhombic dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Cryptomelane", "title": "Wikipedia: Cryptomelane" } ], "names": [ "Cryptomelane" ], "chemicalFormula": "K(Mn$^{4+}$,Mn$^{2+}$)$_{8}$O$_{16}$", "properties": [ { "scalars": [ { "value": "Oxide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "04.DK.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "9.956" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "2.8705" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "9.706" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "90.95" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "1" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Steel-gray-bluish gray, light tan or gray in re\\xef\\xac\\x82ected light" } ], "name": "Color" }, { "scalars": [ { "value": "Rare as subhedral crystals, commonly as compact \\xef\\xac\\x81ne-grained masses, banded colloform, botryoidal, or radial \\xef\\xac\\x81brous aggregates" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Twinning developed on (010) and (101) resulting in a pseudotetragonal unit cell." } ], "name": "Twinning" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "6-6.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic-dull" } ], "name": "Luster" }, { "scalars": [ { "value": "Brownish black" } ], "name": "Streak" }, { "scalars": [ { "value": "4.17-4.41" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "I2/m" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Susannite", "title": "Wikipedia: Susannite" } ], "names": [ "Susannite" ], "chemicalFormula": "Pb$_{4}$SO$_{4}$(CO$_{3}$)$_{2}$(OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Carbonate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "05.BF.40" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "9.07" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "11.57" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "3" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless, white, pale green, pale yellow, brown" } ], "name": "Color" }, { "scalars": [ { "value": "Occurs as equant-acute rhombohedral crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{0001} perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "2.5-3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine, resinous" } ], "name": "Luster" }, { "scalars": [ { "value": "6.55" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.96" } ], "name": "Refractive index" }, { "scalars": [ { "value": "$\\bar{3}$" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "R$\\bar{3}$" } ], "name": "Space group" }, { "scalars": [ { "value": "Trigonal rhombohedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Paralaurionite", "title": "Wikipedia: Paralaurionite" } ], "names": [ "Paralaurionite" ], "chemicalFormula": "PbCl(OH)", "properties": [ { "scalars": [ { "value": "Halide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "3.DC.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "10.865(4)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "4.006(2)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "7.233(3)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "117.24(4)" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless, white, pale greenish, yellowish, yellow-orange, rarely violet" } ], "name": "Color" }, { "scalars": [ { "value": "Elongated tabular crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Contact twinning on {100}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Flexible, non-elastic" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Subadamantine" } ], "name": "Luster" }, { "scalars": [ { "value": "6.05-6.15" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.050" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "2.150" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "2.200" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.150" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Visible" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "C 2/m" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Carlosruizite", "title": "Wikipedia: Carlosruizite" } ], "names": [ "Carlosruizite" ], "chemicalFormula": "K$_{6}$(Na,K)$_{4}$Na$_{6}$Mg$_{10}$", "properties": [ { "scalars": [ { "value": "Sulfate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "6/D.16-60" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "23.1.2.2" } ], "name": "Dana classification" }, { "scalars": [ { "value": "9.59" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "27.56" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "1" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (V)" }, { "scalars": [ { "value": "195.11" } ], "units": "$\\AA^3$", "name": "Unit cell volume" }, { "scalars": [ { "value": "4438.69" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "Colorless-pale yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Platy-sheet forms" } ], "conditions": [ { "scalars": [ { "value": "e.g. micas" } ], "name": "Note" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{110} Good" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2.5-3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.42" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.642" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "1.655" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "0.013" } ], "name": "Birefringence" }, { "scalars": [ { "value": "$\\bar{3}$2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P$\\bar{3}$c1" } ], "name": "Space group" }, { "scalars": [ { "value": "Trigonal hexagonal scalenohedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Georgerobinsonite", "title": "Wikipedia: Georgerobinsonite" } ], "names": [ "Georgerobinsonite" ], "chemicalFormula": "Pb$_{4}$(CrO$_{4}$)$_{2}$(OH)$_{2}$FCl", "properties": [ { "scalars": [ { "value": "7.6257(6)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "11.6078(9)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.8961(5)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "Orange-red" } ], "name": "Color" }, { "scalars": [ { "value": "Orthorombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "2.5-3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine luster" } ], "name": "Luster" }, { "scalars": [ { "value": "Pale orange" } ], "name": "Streak" }, { "scalars": [ { "value": "6.23" } ], "conditions": [ { "scalars": [ { "value": "g/cm$^{3}$" } ], "name": "Note" } ], "name": "Density" }, { "scalars": [ { "value": "None" } ], "name": "fluorescence" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Ardaite", "title": "Wikipedia: Ardaite" } ], "names": [ "Ardaite" ], "chemicalFormula": "Pb$_{19}$Sb$_{13}$S$_{35}$Cl$_{7}$", "properties": [ { "scalars": [ { "value": "Sulfosalt minerals Lead minerals" } ], "name": "Category" }, { "scalars": [ { "value": "02.15.01.01" } ], "name": "Dana classification" }, { "scalars": [ { "value": "02.LB.30, 2/E.19-20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Greenish gray or bluish green" } ], "name": "Color" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "2.5-3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Weak" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "6.44" } ], "name": "Density" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Shigaite", "title": "Wikipedia: Shigaite" } ], "names": [ "Shigaite" ], "chemicalFormula": "NaAl$_{3}$(Mn$^{2+}$)$_{6}$(SO$_{4}$)$_{2}$(OH)$_{18}$.12H$_{2}$O", "properties": [ { "scalars": [ { "value": "Sulfate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "07.DD.35" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "31.1.2.1" } ], "name": "Dana classification" }, { "scalars": [ { "value": "9.51" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "32.83" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "3" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Yellow, burnt orange, brown, black" } ], "name": "Color" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "On {0001}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {0001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Moderately \\xef\\xac\\x82exible" } ], "name": "Tenacity" }, { "scalars": [ { "value": "~2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-dull" } ], "name": "Luster" }, { "scalars": [ { "value": "1.546" } ], "name": "Refractive index (n)" }, { "scalars": [ { "value": "Distinct, O=yellow, E=very pale yellow" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Non-fluorescent" } ], "name": "fluorescence" }, { "scalars": [ { "value": "Very pale yellow-white" } ], "name": "Streak" }, { "scalars": [ { "value": "2.32" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "$\\bar{3}$" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "R$\\bar{3}$" } ], "name": "Space group" }, { "scalars": [ { "value": "Trigonal rhombohedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Sklodowskite", "title": "Wikipedia: Sklodowskite" } ], "names": [ "Sklodowskite" ], "chemicalFormula": "Mg(UO$_{2}$)$_{2}$(HSiO$_{4}$)$_{2}$.5H$_{2}$O", "properties": [ { "scalars": [ { "value": "Nesosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.AK.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Light yellow-green-yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect, on {100}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "2-3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine, vitreous, silky" } ], "name": "Luster" }, { "scalars": [ { "value": "Yellow" } ], "name": "Streak" }, { "scalars": [ { "value": "3.54" } ], "conditions": [ { "scalars": [ { "value": "g/cm$^{3}$" } ], "name": "Note" } ], "name": "Density" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Demesmaekerite", "title": "Wikipedia: Demesmaekerite" } ], "names": [ "Demesmaekerite" ], "chemicalFormula": "Pb$_{2}$Cu$_{5}$(UO2)$_{2}$(SeO$_{3}$)$_{6}$(OH)$_{6}$.2H$_{2}$O", "properties": [ { "scalars": [ { "value": "Oxide mineral" } ], "name": "Category" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Bayleyite", "title": "Wikipedia: Bayleyite" } ], "names": [ "Bayleyite" ], "chemicalFormula": "Mg$_{2}$(UO$_{2}$)(CO$_{3}$)$_{3}$.18(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Carbonate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "05.ED.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "26.65" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "15.31" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.53" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "93.07" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Sulfur yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Clusters of prismatic crystals, crusts" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "2-2.5" } ], "name": "Mohs scale 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"system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Derriksite", "title": "Wikipedia: Derriksite" } ], "names": [ "Derriksite" ], "chemicalFormula": "Cu$_{4}$(UO$_{2}$)(SeO$_{3}$)$_{2}$(OH)$_{6}$.H$_{2}$O", "properties": [ { "scalars": [ { "value": "Oxide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "04.JG.30" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Bottle green, green" } ], "name": "Color" }, { "scalars": [ { "value": "{???} perfect, {010} good" } ], "name": "Cleavage" }, { "scalars": [ { "value": "4.72" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Kostovite", "title": "Wikipedia: Kostovite" } ], "names": [ "Kostovite" ], "chemicalFormula": "AuCuTe$_{4}$", "properties": [ { "scalars": [ { "value": "Telluride mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.12.13.4" } ], "name": "Dana classification" }, { "scalars": [ { "value": "02.EA.15, 2/D.16-10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Grayish white" } ], "name": "Color" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Fine lamellar" } ], "name": "Twinning" }, { "scalars": [ { "value": "Distinct/good" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2-2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Visible" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "7.94" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Bassanite", "title": "Wikipedia: Bassanite" } ], "names": [ "Bassanite" ], "chemicalFormula": "CaSO$_{4}$.0.5(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Sulfate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "7.CD.45" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "12.0317" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "6.9269" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "12.6712" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "90.27" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "12" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "White" } ], "name": "Color" }, { "scalars": [ { "value": "Microscopic acicular crystals in parallel aggregates" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic, pseudohexagonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Twin plane {101}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Earthy" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.69-2.76" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.550-1.559" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.560" } ], "name": "Refractive index (n$_{\\beta}$)" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Hemusite", "title": "Wikipedia: Hemusite" } ], "names": [ "Hemusite" ], "chemicalFormula": "Cu$_{6}$SnMoS$_{8}$", "properties": [ { "scalars": [ { "value": "Sulfosalt minerals, Sulfides" } ], "name": "Category" }, { "scalars": [ { "value": "2.9.6.1" } ], "name": "Dana classification" }, { "scalars": [ { "value": "02.CB.35a, 2/C.09-10" } ], "conditions": [ { "scalars": [ { "value": "8 ed" } ], "name": "Note" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "gray" } ], "name": "Color" }, { "scalars": [ { "value": "Isometric" } ], "name": "Crystal system" }, { "scalars": [ { "value": "4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "4.469" } ], "name": "Density" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Strashimirite", "title": "Wikipedia: Strashimirite" } ], "names": [ "Strashimirite" ], "chemicalFormula": "Cu$_{8}$(AsO$_{4}$)$_{4}$(OH)$_{4}$.5(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Arsenate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "42.6.5.1" } ], "name": "Dana classification" }, { "scalars": [ { "value": "08.DC.12, 7/D.07-20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "9.71" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "18.81" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "8.94" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "97.2" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "3" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "White, pale green" } ], "name": "Color" }, { "scalars": [ { "value": "Elongated, tabular crystals, crusts, radiating aggregates" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Parting at right angle-elongation" } ], "name": "Cleavage" }, { "scalars": [ { "value": "2.5-3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Greasy, pearly" } ], "name": "Luster" }, { "scalars": [ { "value": "1.726" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.747" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.021" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Weak, Y=very pale yellowish green, Z=yellowish green" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "3.67" } ], "conditions": [ { "scalars": [ { "value": "calculated" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "P 2/m" } ], "name": "Space group" }, { "scalars": [ { "value": "or Pm" } ], "name": "Symmetry" }, { "scalars": [ { "value": "P 2" } ], "name": "Symmetry" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Fourmarierite", "title": "Wikipedia: Fourmarierite" } ], "names": [ "Fourmarierite" ], "chemicalFormula": "Pb(UO$_{2}$)$_{4}$O$_{3}$(OH)$_{4}$.4H$_{2}$O", "properties": [ { "scalars": [ { "value": "Oxide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "04.GB.25" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Red, golden-red, brown" } ], "name": "Color" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "On {001}, perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "3-4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine" } ], "name": "Luster" }, { "scalars": [ { "value": "6.046" } ], "conditions": [ { "scalars": [ { "value": "g/cm$^{3}$" } ], "name": "Note" } ], "name": "Density" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Geikielite", "title": "Wikipedia: Geikielite" } ], "names": [ "Geikielite" ], "chemicalFormula": "MgTiO$_{3}$", "properties": [ { "scalars": [ { "value": "Oxide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "04.CB.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.05478(26)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "13.8992(7)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "6" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Black, ruby red uncommon, red internal reflections" } ], "name": "Color" }, { "scalars": [ { "value": "Tabular prismatic crystals, also as finely granular masses" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Good on {10$\\bar{1}$1}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Sub-metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Purplish brown" } ], "name": "Streak" }, { "scalars": [ { "value": "3.79-4.2" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.310-2.350" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.950-1.980" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.360-0.370" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Weak, O=pinkish red, E=brownish-purplish red" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "$\\bar{3}$" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "R$\\bar{3}$" } ], "name": "Space group" }, { "scalars": [ { "value": "Trigonal rhombohedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Bultfonteinite", "title": "Wikipedia: Bultfonteinite" } ], "names": [ "Bultfonteinite" ], "chemicalFormula": "Ca$_{2}$SiO$_{2}$(OH,F)$_{4}$", "properties": [ { "scalars": [ { "value": "Nesosilicates" } ], "name": "Category" }, { "scalars": [ { "value": "09.AG.80" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "52.4.7.2" } ], "name": "Dana classification" }, { "scalars": [ { "value": "10.99" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8.18" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.67" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "93.95" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\alpha$)" }, { "scalars": [ { "value": "91.32" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "89.85" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\gamma$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless, pink" } ], "name": "Color" }, { "scalars": [ { "value": "Triclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Interpenetrating on {100} and {010}, polysynthetic" } ], "name": "Twinning" }, { "scalars": [ { "value": "Good on {100} and {010}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "4.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.587" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.590" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.597" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.010" } ], "name": "Birefringence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "Soluble in hydrochloric acid" } ], "name": "Solubility" }, { "scalars": [ { "value": "P$\\bar{1}$" } ], "name": "Space group" }, { "scalars": [ { "value": "$\\bar{1}$" } ], "name": "Point group" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Pascoite", "title": "Wikipedia: Pascoite" } ], "names": [ "Pascoite" ], "chemicalFormula": "Ca$_{3}$V$_{10}$O$_{28}$.17 H$_{2}$O", "properties": [ { "scalars": [ { "value": "Vanadate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "4.HC.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "47.2.1.1" } ], "name": "Dana classification" }, { "scalars": [ { "value": "16.834" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "10.156" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "10.921" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "93.13" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Distinct on {010}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Sub-Adamantine, Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "Cadmium-yellow" } ], "name": "Streak" }, { "scalars": [ { "value": "2.455" } ], "conditions": [ { "scalars": [ { "value": "measured" } ], "name": "Note" } ], "name": "Density" }, { "scalars": [ { "value": "1.775" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.815" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.825" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.050" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Visible" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Soluble in water" } ], "name": "Solubility" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "C 2/m" } ], "name": "Space group" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Pentagonite", "title": "Wikipedia: Pentagonite" } ], "names": [ "Pentagonite" ], "chemicalFormula": "Ca(VO)Si$_{4}$O$_{10}$.4(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Silicate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "9.EA.55" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "10.386(4)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "14.046(7)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "8.975(2)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Greenish blue" } ], "name": "Color" }, { "scalars": [ { "value": "Prismatic crystals, often as radiating clusters" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Multiple twins producing a pseudo pentagonal symmetry" } ], "name": "Twinning" }, { "scalars": [ { "value": "Good on {010}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3-4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "2.33" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.533" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.544" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.547" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.014" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Visible: X=Z=colorless Y=blue" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "mm2" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "Ccm21" } ], "name": "Space group" }, { "scalars": [ { "value": "Orthorhombic pyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/S\u00e9randite", "title": "Wikipedia: S\u00e9randite" } ], "names": [ "S\u00e9randite" ], "chemicalFormula": "Na(Mn$^{2+}$,Ca)$_{2}$Si$_{3}$O$_{8}$(OH).", "properties": [ { "scalars": [ { "value": "Inosilicates" } ], "name": "Category" }, { "scalars": [ { "value": "9.DG.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "65.2.1.5" } ], "name": "Dana classification" }, { "scalars": [ { "value": "7.683(1)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "6.889(1)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.747(1)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "90.53(5)" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\alpha$)" }, { "scalars": [ { "value": "94.12(2)" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "102.75(2)" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\gamma$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Triclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Around [010] composition plane {100}, less commonly contact twin on {110}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {001} and {100}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Irregular, uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5-5.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-greasy, fibrous aggregates are dull-silky" } ], "name": "Luster" }, { "scalars": [ { "value": "1.668" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.671" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.703" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.035" } ], "name": "Birefringence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.34" } ], "conditions": [ { "scalars": [ { "value": "g/cm$^{3}$" } ], "name": "Note" } ], "name": "Density" }, { "scalars": [ { "value": "$\\bar{1}$" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P$\\bar{1}$" } ], "name": "Space group" }, { "scalars": [ { "value": "Pinacoidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Tarbuttite", "title": "Wikipedia: Tarbuttite" } ], "names": [ "Tarbuttite" ], "chemicalFormula": "Zn$_{2}$(PO$_{4}$)(OH)", "properties": [ { "scalars": [ { "value": "Phosphate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "8.BB.35" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "41.6.7.1" } ], "name": "Dana classification" }, { "scalars": [ { "value": "5.400" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.654" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.465" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "102.51" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\alpha$)" }, { "scalars": [ { "value": "102.46" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "86.50" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\gamma$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "White, colorless, yellow, red, green, or brown" } ], "name": "Color" }, { "scalars": [ { "value": "Triclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {010}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Irregular, uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "3.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, pearly on cleavages" } ], "name": "Luster" }, { "scalars": [ { "value": "1.660" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.705" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.713" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.053" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Non-fluorescent" } ], "name": "fluorescence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "4.12" } ], "conditions": [ { "scalars": [ { "value": "g/cm$^{3}$" } ], "name": "Note" } ], "name": "Density" }, { "scalars": [ { "value": "$\\bar{1}$" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P$\\bar{1}$" } ], "name": "Space group" }, { "scalars": [ { "value": "Pinacoidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Gatehouseite", "title": "Wikipedia: Gatehouseite" } ], "names": [ "Gatehouseite" ], "chemicalFormula": "Mn$_{5}$(PO$_{4}$)$_{2}$(OH)$_{4}$", "properties": [ { "scalars": [ { "value": "Phosphate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "08.BD.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "41.4.1.2" } ], "name": "Dana classification" }, { "scalars": [ { "value": "17.9733(18)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.6916(11)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "9.130(4)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "933.9(4) $^{3}$" } ], "units": "$\\AA$", "name": "Unit cell (V)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Brownish orange-yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Orthorhombicbr>Space group P2$_{1}$2$_{1}$2$_{1}$" } ], "name": "Crystal system" }, { "scalars": [ { "value": "On {001}, contact twins" } ], "name": "Twinning" }, { "scalars": [ { "value": "Distinct on {010}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Splintery" } ], "name": "Fracture" }, { "scalars": [ { "value": "4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine" } ], "name": "Luster" }, { "scalars": [ { "value": "1.74(1)" } ], "name": "Refractive index ($\\alpha$)" }, { "scalars": [ { "value": "n.d." } ], "name": "Refractive index ($\\beta$)" }, { "scalars": [ { "value": "1.76(1)" } ], "name": "Refractive index ($\\gamma$)" }, { "scalars": [ { "value": "0.020" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Distinct, brown-nearly colorless" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Pale yellow" } ], "name": "Streak" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Arsenoclasite", "title": "Wikipedia: Arsenoclasite" } ], "names": [ "Arsenoclasite" ], "chemicalFormula": "Mn$_{5}$(AsO$_{4}$)$_{2}$(OH)$_{4}$", "properties": [ { "scalars": [ { "value": "Arsenate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "08.BD.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "41.4.1.1" } ], "name": "Dana classification" }, { "scalars": [ { "value": "9.31" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.75" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "18.29" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "620.56" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "Red, dark orange-brown" } ], "name": "Color" }, { "scalars": [ { "value": "Massive or granular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {010}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "1.787" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.810" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.816" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.029" } ], "name": "Birefringence" }, { "scalars": [ { "value": "4.16" } ], "conditions": [ { "scalars": [ { "value": "g/cm$^{3}$" } ], "name": "Note" } ], "name": "Density" }, { "scalars": [ { "value": "P2$_{1}$2$_{1}$2$_{1}$" } ], "name": "Space group" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Motukoreaite", "title": "Wikipedia: Motukoreaite" } ], "names": [ "Motukoreaite" ], "chemicalFormula": "Mg$_{6}$Al$_{3}$(OH)$_{18}$[Na(H$_{2}$O)$_{6}$](SO$_{4}$)$_{2}$.6H$_{2}$O (possibly more than one species)", "properties": [ { "scalars": [ { "value": "Sulfate and Carbonate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "7.DD.35" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "17.1.7.1" } ], "name": "Dana classification" }, { "scalars": [ { "value": "9.172(2)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "33.51(1)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "3" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless, white, pale yellow, pale yellow-green" } ], "name": "Color" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Good on {0001}, perhaps a parting" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Sectile, \\xef\\xac\\x82exible" } ], "name": "Tenacity" }, { "scalars": [ { "value": "1-1.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Dull" } ], "name": "Luster" }, { "scalars": [ { "value": "1.510" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.510" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "0.012" } ], "name": "Birefringence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "1.43-1.53" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "$\\bar{3}$2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "R$\\bar{3}$m" } ], "name": "Space group" }, { "scalars": [ { "value": "Trigonal hexagonal scalenohedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Sonolite", "title": "Wikipedia: Sonolite" } ], "names": [ "Sonolite" ], "chemicalFormula": "Mn$_{9}$(SiO$_{4}$)$_{4}$(OH,F)$_{2}$", "properties": [ { "scalars": [ { "value": "Silicate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "9.AF.55" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "52.3.2d.3" } ], "name": "Dana classification" }, { "scalars": [ { "value": "4.87" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "10.66" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "14.28" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "100.3" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Red-orange, pinkish brown-dark brown, Colorless in thin section" } ], "name": "Color" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Common, singular or lamellar on {101}" } ], "name": "Twinning" }, { "scalars": [ { 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{ "value": "Nesosilicates" } ], "name": "Category" }, { "scalars": [ { "value": "9.AF.60" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "52.3.2c.2" } ], "name": "Dana classification" }, { "scalars": [ { "value": "10.84" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "4.82" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "11.32" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "103.93" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Imperfect on {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5.5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.751" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.771" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.782" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.031" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Faint, rose-red \\xe2\\x88\\xa5 {001}, Colorless \\xe2\\x8a\\xa5 {001}" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Non-fluorescent" } ], "name": "fluorescence" }, { "scalars": [ { "value": "P2$_{1}$/a" } ], "name": "Space group" }, { "scalars": [ { "value": "2/m" } ], "name": "Point group" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Caryopilite", "title": "Wikipedia: Caryopilite" } ], "names": [ "Caryopilite" ], "chemicalFormula": "(Mn$^{2+}$,Mg)$_{3}$Si$_{2}$O$_{5}$(OH)$_{4}$", "properties": [ { "scalars": [ { "value": "Phyllosilicate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "9.ED.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "71.1.2b.1" } ], "name": "Dana classification" }, { "scalars": [ { "value": "5.66" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "9.81" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "7.52" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "104.52" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Reddish brown, tan, Light brown-yellow in thin section" } ], "name": "Color" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.606-1.620" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.632-1.650" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.632-1.650" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.026-0.030" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Light Brown" } ], "name": "Streak" }, { "scalars": [ { "value": "2.83-2.94" } ], "conditions": [ { "scalars": [ { "value": "measured" } ], "name": "Note" } ], "name": "Density" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Sarkinite", "title": "Wikipedia: Sarkinite" } ], "names": [ "Sarkinite" ], "chemicalFormula": "Mn$_{2}$(AsO$_{4}$)(OH)", "properties": [ { "scalars": [ { "value": "Arsenate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "8.BB.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "41.6.3.3" } ], "name": "Dana classification" }, { "scalars": [ { "value": "12.7795(13)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "13.6127(14)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "10.2188(11)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "108.834(2)" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "16" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Red-yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Tabular or granular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Distinct on {100}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Irregular/Uneven, Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "4-5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Greasy" } ], "name": "Luster" }, { "scalars": [ { "value": "1.793" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.807" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.809" } ], "name": "Refractive index 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"10.6.1.1" } ], "name": "Dana classification" }, { "scalars": [ { "value": "5.880" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.500" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "1" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Blue" } ], "name": "Color" }, { "scalars": [ { "value": "As square tabular crystals, thin plates, massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Tetragonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine, pearly on cleavages" } ], "name": "Luster" }, { "scalars": [ { "value": "1.980" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.850" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.130" } ], "name": "Birefringence" }, { "scalars": [ { "value": "O>E, in thick fragments" } ], "name": "absorption" }, { "scalars": [ { "value": "Pale blue" } ], "name": "Streak" }, { "scalars": [ { "value": "5.41-5.43" } ], "conditions": [ { "scalars": [ { "value": "g/cm$^{3}$" } ], "name": "Note" } ], "name": "Density" }, { "scalars": [ { "value": "Completely soluble in nitric acid" } ], "name": "Solubility" }, { "scalars": [ { "value": "4mm" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P4mm" } ], "name": "Space group" }, { "scalars": [ { "value": "Ditetragonal pyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Bobfergusonite", "title": "Wikipedia: Bobfergusonite" } ], "names": [ "Bobfergusonite" ], "chemicalFormula": "Na$_{2}$Mn$_{5}$FeAl(PO$_{4}$)$_{6}$", "properties": [ { "scalars": [ { "value": "Phosphate 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"Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Narsarsukite", "title": "Wikipedia: Narsarsukite" } ], "names": [ "Narsarsukite" ], "chemicalFormula": "Na$_{4}$(Ti,Fe)$_{4}$[Si$_{8}$O$_{20}$](O,OH,F)$_{4}$.", "properties": [ { "scalars": [ { "value": "Silicate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "9.DJ.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "10.72" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "7.95" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Honey-lemon-yellow, reddish brown, brownish gray, tan, pink, may be green from inclusions, may show color zoning" } ], "name": "Color" }, { "scalars": [ { "value": "Occurs as flat tabular-equant, striated crystals In divergent, radiating groups, massive" } ], 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"$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Bright orange" } ], "name": "Color" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None observed" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal, curved" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine" } ], "name": "Luster" }, { "scalars": [ { "value": "1.769(3)" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.802(3)" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.807(3)" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.038" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Yellow" } ], "name": "Streak" }, { "scalars": [ { "value": "Slowly in water, Quickly in cold, dilute HCl" } ], "name": "Solubility" }, { "scalars": [ { "value": "C2/m" } ], "name": "Space group" }, { "scalars": [ { "value": "2/m" } ], "name": "Point group" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Huemulite", "title": "Wikipedia: Huemulite" } ], "names": [ "Huemulite" ], "chemicalFormula": "Na$_{4}$Mg(V$_{10}$O$_{28}$).24H$_{2}$O", "properties": [ { "scalars": [ { "value": "4.HG.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "47.2.3.1" } ], "name": "Dana classification" }, { "scalars": [ { "value": "9.0453(2)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "11.3337(3)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "11.7372(8)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "105.223(7)" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\alpha$)" }, { "scalars": [ { "value": "97.383(7)" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "100.790(7)" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\gamma$)" }, { "scalars": [ { "value": "1" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Yellowish orange-orange" } ], "name": "Color" }, { "scalars": [ { "value": "Triclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "2.5-3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Dull" } ], "name": "Luster" }, { "scalars": [ { "value": "1.679(3)" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.734(3)" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.742(2)" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.063" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Visible" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Not fluorescent" } ], "name": "fluorescence" }, { "scalars": [ { "value": "Yellow" } ], "name": "Streak" }, { "scalars": [ { "value": "2.39 g/cm$^{3}$" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "500" } ], "units": "$^{\\circ}$C", "name": "Melting point" }, { "scalars": [ { "value": "Soluble in water" } ], "name": "Solubility" }, { "scalars": [ { "value": "P$\\bar{1}$" } ], "name": "Space group" }, { "scalars": [ { "value": "$\\bar{1}$" } ], "name": "Point group" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Manganvesuvianite", "title": "Wikipedia: Manganvesuvianite" } ], "names": [ "Manganvesuvianite" ], "chemicalFormula": "Ca$_{19}$Mn$^{3+}$(Al,Mn$^{3+}$,Fe$^{3+}$)$_{10}$(Mg,Mn$^{2+}$)$_{2}$", "properties": [ { "scalars": [ { "value": "Sorosilicates" } ], "name": "Category" }, { "scalars": [ { "value": "9.BG.35" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "58.02.04.04" } ], "name": "Dana classification" }, { "scalars": [ { "value": "15.575" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "11.824" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Deep red-brown, red, nearly black" } ], "name": "Color" }, { "scalars": [ { "value": "Tetragonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None observed" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "6-7" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.735" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.724" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.012" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Strong" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "4/m" } ], "name": "H-M group" }, { "scalars": [ { "value": "P4/n" } ], "name": "Space group" }, { "scalars": [ { "value": "Dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Achavalite", "title": "Wikipedia: Achavalite" } ], "names": [ "Achavalite" ], "chemicalFormula": "(Fe,Cu)Se", "properties": [ { "scalars": [ { "value": "Selenide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.CC.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "3.636" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.946" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "134.81" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "Dark grey" } ], "name": "Color" }, { "scalars": [ { "value": "Hexagonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Grey-black" } ], "name": "Streak" }, { "scalars": [ { "value": "6.53" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "6/m2/m2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 6$_{3}$/mmc" } ], "name": "Space group" }, { "scalars": [ { "value": "Hexagonal dihexagonal dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Minnesotaite", "title": "Wikipedia: Minnesotaite" } ], "names": [ "Minnesotaite" ], "chemicalFormula": "(Fe$^{2+}$,Mg)$_{3}$Si$_{4}$O$_{10}$(OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Silicate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "9.EC.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.623(2)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "9.419(2)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "9.624(3)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "Greenish gray-olive-green" } ], "name": "Color" }, { "scalars": [ { "value": "Occurs as microscopic needles or platelets, the needles occur in radiating clusters or in sheaves, also fibrous" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Triclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Inferred based on X-ray patterns" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {001}, micaceous" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven and irregular" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "1.5-2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Greasy-waxy, dull" } ], "name": "Luster" }, { "scalars": [ { "value": "3.01" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.578-1.583" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.578-1.622" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.615-1.623" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.037-0.040" } ], "name": "Birefringence" }, { "scalars": [ { "value": "X=pale green, Z=colorless-pale greenish yellow" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "$\\bar{1}$" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "C$\\bar{1}$" } ], "name": "Space group" }, { "scalars": [ { "value": "Triclinic pinacoidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Benstonite", "title": "Wikipedia: Benstonite" } ], "names": [ "Benstonite" ], "chemicalFormula": "Ba$_{6}$Ca$_{6}$Mg(CO$_{3}$)$_{13}$", "properties": [ { "scalars": [ { "value": "Carbonate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "05.AB.55" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "14.2.3.1" } ], "name": "Dana classification" }, { "scalars": [ { "value": "18.280" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8.652" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "3" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Snow-white, ivory, very pale yellow, pale yellowish brown" } ], "name": "Color" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Good on {31$\\bar{4}$2}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "3-4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.690" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.527" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.163" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Red or yellow under UV and X-rays" } ], "name": "fluorescence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "$\\bar{3}$ Rhombohedral" } ], "name": "H-M group" }, { "scalars": [ { "value": "R$\\bar{3}$" } ], "name": "Space group" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Rapidcreekite", "title": "Wikipedia: Rapidcreekite" } ], "names": [ "Rapidcreekite" ], "chemicalFormula": "Ca$_{2}$(SO$_{4}$)(CO$_{3}$).4H$_{2}$O", "properties": [ { "scalars": [ { "value": "Sulfate minerals, Carbonate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "7.DG.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "32.2.1.1" } ], "name": "Dana classification" }, { "scalars": [ { "value": "15.517(2)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "19.226(3)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.1646(8)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "White-colorless" } ], "name": "Color" }, { "scalars": [ { "value": "Elongated, flattened-acicular crystals in radiating sprays or crust forming" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {010}, Good on {100}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Splintery" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.516" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.518" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.531" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.015" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Non-fluorescent" } ], "name": "fluorescence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.239" } ], "conditions": [ { "scalars": [ { "value": "calculated" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Dissolves slowly in 10% HCl" } ], "name": "Solubility" }, { "scalars": [ { "value": "Pcnb" } ], "name": "Space group" }, { "scalars": [ { "value": "2/m 2/m 2/m" } ], "name": "Point group" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Collinsite", "title": "Wikipedia: Collinsite" } ], "names": [ "Collinsite" ], "chemicalFormula": "Ca$_{2}$(Mg,Fe$^{2+}$)(PO$_{4}$)$_{2}$.2H$_{2}$O", "properties": [ { "scalars": [ { "value": "Phosphate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "08.CG.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "40.2.2.3" } ], "name": "Dana classification" }, { "scalars": [ { "value": "5.734(1)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "6.780(1)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.441(1)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "97.29" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\alpha$)" }, { "scalars": [ { "value": "108.56" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "107.28" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\gamma$)" }, { "scalars": [ { "value": "1" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Triclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Fair on {001} and {010}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3-3.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Subvitreous, silky if \\xef\\xac\\x81brous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.632" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.642" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.657" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.025" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Non-fluorescent" } ], "name": "fluorescence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.99" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Readily soluble in acids" } ], "name": "Solubility" }, { "scalars": [ { "value": "$\\bar{1}$" } ], "name": "H-M group" }, { "scalars": [ { "value": "P$\\bar{1}$" } ], "name": "Space group" }, { "scalars": [ { "value": "Pinacoidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Messelite", "title": "Wikipedia: Messelite" } ], "names": [ "Messelite" ], "chemicalFormula": "Ca$_{2}$(Fe$^{2+}$,Mn$^{2+}$)(PO$_{4}$)$_{2}$.2H$_{2}$O", "properties": [ { "scalars": [ { "value": "Phosphate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "8.CG.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "40.2.2.2" } ], "name": "Dana classification" }, { "scalars": [ { "value": "5.8" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "6.6" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.5" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "102" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\alpha$)" }, { "scalars": [ { "value": "109" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "90" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\gamma$)" }, { "scalars": [ { "value": "White, pale greenish white, greenish gray, pink, colorless" } ], "name": "Color" }, { "scalars": [ { "value": "Triclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {001}, producing curved irregular surfaces" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "3.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "1.644" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.653" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.680" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.036" } ], "name": "Birefringence" }, { "scalars": [ { "value": "3.16" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "P$\\bar{1}$" } ], "name": "Space group" }, { "scalars": [ { "value": "$\\bar{1}$" } ], "name": "Point group" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Paramelaconite", "title": "Wikipedia: Paramelaconite" } ], "names": [ "Paramelaconite" ], "chemicalFormula": "Cu$_{2}$$^{1+}$Cu$_{2}$$^{2+}$O$_{3}$ (or Cu$_{4}$O$_{3}$)", "properties": [ { "scalars": [ { "value": "Oxide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "4.AA.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "4.6.4.1" } ], "name": "Dana classification" }, { "scalars": [ { "value": "5.837" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "9.932" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Black-black with a slight purple tint, White with pinkish brown tint in reflected light" } ], "name": "Color" }, { "scalars": [ { "value": "Occurs as striated prismatic crystals, massive" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Tetragonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None observed" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "4.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Sub-adamantine, greasy, sub-metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Weak" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Not fluorescent" } ], "name": "fluorescence" }, { "scalars": [ { "value": "Brown-black" } ], "name": "Streak" }, { "scalars": [ { "value": "6.04-6.11" } ], "conditions": [ { "scalars": [ { "value": "measured" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Soluble in HCl and HNO$_{3}$" } ], "name": "Solubility" }, { "scalars": [ { "value": "4/mmm 4/m 2/m 2/m" } ], "name": "H-M group" }, { "scalars": [ { "value": "I4$_{1}$/amd {I4$_{1}$/a 2/m 2/d}" } ], "name": "Space group" }, { "scalars": [ { "value": "Ditetragonal dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Spertiniite", "title": "Wikipedia: Spertiniite" } ], "names": [ "Spertiniite" ], "chemicalFormula": "Cu(OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Oxide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "04.FD.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "6.2.4.1" } ], "name": "Dana classification" }, { "scalars": [ { "value": "2.95" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "10.59" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.27" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "97.56" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "Blue, blue-green" } ], "name": "Color" }, { "scalars": [ { "value": "Flat tabular crystals occurring in radial-botryoidal aggregates" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "Soft" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "3.93" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.720" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "n.d." } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": ">1.800" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "Strong, X=colorless, Z=dark blue" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Decomposes in hot water" } ], "conditions": [ { "scalars": [ { "value": "synthetic" } ], "name": "Note" } ], "name": "Other" }, { "scalars": [ { "value": "mm2" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "C mc2$_{1}$" } ], "name": "Space group" }, { "scalars": [ { "value": "Orthorhombic pyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Sinkankasite", "title": "Wikipedia: Sinkankasite" } ], "names": [ "Sinkankasite" ], "chemicalFormula": "H2MnAl(PO4)2(OH).6H2O", "properties": [ { "scalars": [ { "value": "Phosphate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "08.DB.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Colourless" } ], "name": "Color" }, { "scalars": [ { "value": "Triclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Dypingite", "title": "Wikipedia: Dypingite" } ], "names": [ "Dypingite" ], "chemicalFormula": "Mg$_{5}$(CO$_{3}$)$_{4}$(OH)$_{2}$.5H$_{2}$O", "properties": [ { "scalars": [ { "value": "Carbonate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "05.DA.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "16b.07.02.01" } ], "name": "Dana classification" }, { "scalars": [ { "value": "White" } ], "name": "Color" }, { "scalars": [ { "value": "Globular-spherical-rounded forms" } ], "conditions": [ { "scalars": [ { "value": "e.g. wavellite" } ], "name": "Note" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "Pearly" } ], "name": "Luster" }, { "scalars": [ { "value": "White-gray" } ], "name": "Streak" }, { "scalars": [ { "value": "2.15" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.508" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.510" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.516" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.0080" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Colorless" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Fluorescent and phosphorescent, Short UV=gray blue, Long UV=light blue" } ], "name": "fluorescence" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Nuummite", "title": "Wikipedia: Nuummite" } ], "names": [ "Nuummite" ], "chemicalFormula": "(Mg2)(Mg5)Si8O22(OH)2", "properties": [ { "scalars": [ { "value": "Mineral variety" } ], "name": "Category" }, { "scalars": [ { "value": "780.82" } ], "units": "gm", "name": "Molecular weight" }, { "scalars": [ { "value": "Black, grey" } ], "name": "Color" }, { "scalars": [ { "value": "None" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on 210" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "5.5-6.0" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous/glossy" } ], "name": "Luster" }, { "scalars": [ { "value": "1.598-1.697" } ], "name": "Refractive index" }, { "scalars": [ { "value": "Biaxial" } ], "name": "Refractive index" }, { "scalars": [ { "value": "0.0170-0.230" } ], "name": "Birefringence" }, { "scalars": [ { "value": "2.85-3.57" } ], "name": "Density" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Ruizite", "title": "Wikipedia: Ruizite" } ], "names": [ "Ruizite" ], "chemicalFormula": "Ca$_{2}$Mn$_{2}$Si$_{4}$O$_{11}$(OH)$_{4}$.2H$_{2}$O", "properties": [ { "scalars": [ { "value": "Sorosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "9.BJ.35" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "57.2.2.1" } ], "name": "Dana classification" }, { "scalars": [ { "value": "11.95" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "6.17" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "9.03" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "91.37" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Orange, red-brown" } ], "name": "Color" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Common on {100}" } ], "name": "Twinning" }, { "scalars": [ { "value": "5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "1.663" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.715" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.734" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.071" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Apricot" } ], "name": "Streak" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Junitoite", "title": "Wikipedia: Junitoite" } ], "names": [ "Junitoite" ], "chemicalFormula": "CaZn$_{2}$Si$_{2}$O$_{7}$.H$_{2}$O", "properties": [ { "scalars": [ { "value": "Sorosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.BD.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "56.2.1.1" } ], "name": "Dana classification" }, { "scalars": [ { "value": "12.510(7)" } ], "name": "Unit cell (a)" }, { "scalars": [ { "value": "6.318(3)" } ], "name": "Unit cell (b)" }, { "scalars": [ { "value": "8.561(6)" } ], "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless, milk-white, or colored due-alteration" } ], "name": "Color" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Good on {100}, poor on {010} and {011}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Micaceous" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle-semi-sectile due-alteration" } ], "name": "Tenacity" }, { "scalars": [ { "value": "4.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine, Vitreous, Sub-Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.656" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.664" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.672" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.016" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Colorless" } ], "name": "Streak" }, { "scalars": [ { "value": "mm2" } ], "name": "H-M group" }, { "scalars": [ { "value": "Ama2" } ], "name": "Space group" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Daubr\u00e9elite", "title": "Wikipedia: Daubr\u00e9elite" } ], "names": [ "Daubr\u00e9elite" ], "chemicalFormula": "Fe$^{2+}$Cr$^{3+}$$_{2}$S$_{4}$", "properties": [ { "scalars": [ { "value": "Sulfide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.DA.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "02.10.01.11" } ], "name": "Dana classification" }, { "scalars": [ { "value": "9.966" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Black" } ], "name": "Color" }, { "scalars": [ { "value": "Massive, platy aggregates, exsolution lamellae in troilite" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Cubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Distinct" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "4.5-5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Brown or black" } ], "name": "Streak" }, { "scalars": [ { "value": "4/m$\\bar{3}$2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "F d3m" } ], "name": "Space group" }, { "scalars": [ { "value": "Cubic hexoctahedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Daubr\u00e9eite", "title": "Wikipedia: Daubr\u00e9eite" } ], "names": [ "Daubr\u00e9eite" ], "chemicalFormula": "BiO(OH,Cl)", "properties": [ { "scalars": [ { "value": "Oxide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "03.DC.25" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "3.85" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "7.4" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Creamy-white, grayish, yellowish-brown" } ], "name": "Color" }, { "scalars": [ { "value": "Compact massive, columnar" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Tetragonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "[{001}, perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Very plastic, sectile" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2-2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Greasy, silky" } ], "name": "Luster" }, { "scalars": [ { "value": "6-6.5" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.150" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.910" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.240" } ], "name": "Birefringence" }, { "scalars": [ { "value": "4/m2/m2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P4/nmm" } ], "name": "Space group" }, { "scalars": [ { "value": "Tetragonal ditetragonal dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Pseudobrookite", "title": "Wikipedia: Pseudobrookite" } ], "names": [ "Pseudobrookite" ], "chemicalFormula": "Fe$_{2}$TiO$_{5}$", "properties": [ { "scalars": [ { "value": "Oxide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "04.CB.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "9.81" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "9.95" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "3.73" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Dark reddish brown, brownish black, black" } ], "name": "Color" }, { "scalars": [ { "value": "Prismatic-needle like, striated" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Distinct on {010}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven-subconchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine, greasy, metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Brown" } ], "name": "Streak" }, { "scalars": [ { "value": "4.33-4.39" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.350" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "2.390" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "2.420" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.070" } ], "name": "Birefringence" }, { "scalars": [ { "value": "2/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "Bbmm" } ], "name": "Space group" }, { "scalars": [ { "value": "Orthorhombic dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Merrillite", "title": "Wikipedia: Merrillite" } ], "names": [ "Merrillite" ], "chemicalFormula": "Ca$_{9}$NaMg(PO$_{4}$)$_{7}$", "properties": [ { "scalars": [ { "value": "Phosphate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "08.AC.45" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "10.362" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "37.106" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "6" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless-white" } ], "name": "Color" }, { "scalars": [ { "value": "Occurs as anhedral grains" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Poor-indistinct" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "3.1" } ], "conditions": [ { "scalars": [ { "value": "measured" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.62" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "1.623" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "0.0030" } ], "name": "Birefringence" }, { "scalars": [ { "value": "3m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "R 3c" } ], "name": "Space group" }, { "scalars": [ { "value": "Trigonal ditrigonal pyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Carlsbergite", "title": "Wikipedia: Carlsbergite" } ], "names": [ "Carlsbergite" ], "chemicalFormula": "CrN", "properties": [ { "scalars": [ { "value": "01.BC.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "01.01.20.01" } ], "name": "Dana classification" }, { "scalars": [ { "value": "4.16" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Light gray in reflected light with rose tint" } ], "name": "Color" }, { "scalars": [ { "value": "Oriented microscopic platelets, irregular-feathery grains" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Cubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "7" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "5.9" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "4/m$\\bar{3}$2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "F m3m" } ], "name": "Space 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"scalars": [ { "value": "TrigonalHexagonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Excellent on {0001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "1-1.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Black" } ], "name": "Streak" }, { "scalars": [ { "value": "3.14" } ], "conditions": [ { "scalars": [ { "value": "measured" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Strong, pale yellow-deep brown" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "$\\bar{3}$2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "R$\\bar{3}$m" } ], "name": "Space group" }, { "scalars": [ { "value": "Trigonal-hexagonal scalenohedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Djerfisherite", "title": "Wikipedia: Djerfisherite" } ], "names": [ "Djerfisherite" ], "chemicalFormula": "K$_{6}$Na(Fe$^{2+}$,Cu,Ni)$_{25}$S$_{26}$Cl", "properties": [ { "scalars": [ { "value": "Sulfide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.FC.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "10.465" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Rounded grains" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Cubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "3.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Submetallic" } ], "name": "Luster" }, { "scalars": [ { "value": "4/m$\\bar{3}$2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P m3m" } ], "name": "Space group" }, { "scalars": [ { "value": "Isometric hexoctahedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Pecoraite", "title": "Wikipedia: Pecoraite" } ], "names": [ "Pecoraite" ], "chemicalFormula": "Ni$_{3}$(Si$_{2}$O$_{5}$)(OH)$_{4}$", "properties": [ { "scalars": [ { "value": "Silicate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "09.ED.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "2.5-3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Waxy, earthy" } ], "name": "Luster" }, { "scalars": [ { "value": "Pale green" } ], "name": "Streak" }, { "scalars": [ { "value": "3.084" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Syngenite", "title": "Wikipedia: Syngenite" } ], "names": [ "Syngenite" ], "chemicalFormula": "K$_{2}$Ca(SO$_{4}$)$_{2}$.H$_{2}$O", "properties": [ { "scalars": [ { "value": "Sulfate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "07.CD.35" } ], "name": "Strunz 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"scalars": [ { "value": "2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.579-2.603" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.501" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.517" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.518" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.017" } ], "name": "Birefringence" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 21/m" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic-prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Carpholite", "title": "Wikipedia: Carpholite" } ], "names": [ "Carpholite" ], "chemicalFormula": "Mn$^{2+}$Al$_{2}$Si$_{2}$O$_{6}$(OH)$_{4}$", "properties": [ { "scalars": [ { "value": "Inosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.DB.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "13.83" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "20.31" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.13" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Prismatic, acicular-fibrous clusters" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "On {100}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {010}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5.5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Silky" } ], "name": "Luster" }, { "scalars": [ { "value": "2.935-3.031" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.610" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.628" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.630" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.020" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Distinct, X=Y=pale yellow, , Z=colorless" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "2/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "C cca" } ], "name": "Space group" }, { "scalars": [ { "value": "Orthorhombic dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Pickeringite", "title": "Wikipedia: Pickeringite" } ], "names": [ "Pickeringite" ], "chemicalFormula": "MgAl$_{2}$(SO$_{4}$)$_{4}$.22(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Sulfate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "7.CB.85" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "20.8" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "24.2" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.18" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "95" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless, white, may be shades of yellow, green, or red due-impurities" } ], "name": "Color" }, { "scalars": [ { "value": "Rarely as acicular crystals, radial or matted aggregates, typically as" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Poor on {010}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "1.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.73-1.79" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.476" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.480" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.483" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.007" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Completely soluble in water" } ], "name": "Solubility" }, { "scalars": [ { "value": "May contain iron, manganese or cobalt" } ], "name": "impurities" }, { "scalars": [ { "value": "2" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 2" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic sphenoidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Ixiolite", "title": "Wikipedia: Ixiolite" } ], "names": [ "Ixiolite" ], "chemicalFormula": "(Ta,Nb,Sn,Mn,Fe)$_{4}$O$_{8}$ or (Ta,Nb,Sn,Mn,Fe)O$_{2}$", "properties": [ { "scalars": [ { "value": "Oxide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "04.DB.25" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "9.481" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "11.494" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.158" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "90.8" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "16" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Steel-grey, black" } ], "name": "Color" }, { "scalars": [ { "value": "Irregular granular or inclusions, also as prismatic crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic, varieties may be orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Uncommon on {013}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Irregular/ uneven, sub-conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "6-6.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Sub-metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "7.03-7.23" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 2/c" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Synchysite-(Ce)", "title": "Wikipedia: Synchysite-(Ce)" } ], "names": [ "Synchysite-(Ce)" ], "chemicalFormula": "Ca(Ce,La)(CO$_{3}$)$_{2}$F", "properties": [ { "scalars": [ { "value": "05.BD.20c" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "16a.1.3.1" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "4.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "Weak" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Monocline" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Hemihedrite", "title": "Wikipedia: Hemihedrite" } ], "names": [ "Hemihedrite" ], "chemicalFormula": "Pb$_{10}$Zn(CrO$_{4}$)$_{6}$(SiO$_{4}$)$_{2}$(F,OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Chromate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "07.FC.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "9.49" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "11.44" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "10.84" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "120.5" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\alpha$)" }, { "scalars": [ { "value": "92.1" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "55.83" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\gamma$)" }, { "scalars": [ { "value": "1" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Bright orange, henna-brown,-almost black" } ], "name": "Color" }, { "scalars": [ { "value": "Euhedral crystals with hemihedral morphology" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Triclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Present" } ], "name": "Twinning" }, { "scalars": [ { "value": "3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "Saffron-yellow" } ], "name": "Streak" }, { "scalars": [ { "value": "6.42" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.105" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "2.320" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "2.650" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.545" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Feeble, yellow-orange" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "$\\bar{1}$" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P$\\bar{1}$" } ], "name": "Space group" }, { "scalars": [ { "value": "Triclinic pinacoidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Brockite", "title": "Wikipedia: Brockite" } ], "names": [ "Brockite" ], "chemicalFormula": "(Ca,Th,Ce)PO$_{4}$.H$_{2}$O", "properties": [ { "scalars": [ { "value": "Phosphate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "08.CJ.45" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "6.98" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "6.40" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "3" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Reddish brown, yellow" } ], "conditions": [ { "scalars": [ { "value": "red brown due-inclusions of hematite" } ], "name": "Note" } ], "name": "Color" }, { "scalars": [ { "value": "Rarely as Stubby hexagonal prisms rare, common as granular massive aggregates, cryp-crystalline" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Hexagonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None observed" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3-4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Greasy-vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "3.9" } ], "conditions": [ { "scalars": [ { "value": "measured" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.680" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.695" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.015" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Radioactive" } ], "name": "Other" }, { "scalars": [ { "value": "6 2 2" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 6$_{2}$22" } ], "name": "Space group" }, { "scalars": [ { "value": "Hexagonal trapezohedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Ferrimolybdite", "title": "Wikipedia: Ferrimolybdite" } ], "names": [ "Ferrimolybdite" ], "chemicalFormula": "Fe$^{3+}$$_{2}$(MoO$_{4}$)$_{3}$.8(H$_{2}$O) or Fe$^{3+}$$_{2}$(MoO$_{4}$)$_{3}$.n(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Molybdate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "7.GB.30" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "6.665" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "15.423" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "29.901" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Canary-yellow, straw-yellow, greenish yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Acicular tufted-radial aggregates, powdery, earthy" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Distinct on {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "1-2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine, silky, earthy" } ], "name": "Luster" }, { "scalars": [ { "value": "Light yellow" } ], "name": "Streak" }, { "scalars": [ { "value": "2.99" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.720-1.810" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.730-1.830" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.850-2.040" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.130-0.230" } ], "name": "Birefringence" }, { "scalars": [ { "value": "X=Y=clear-nearly colorless, Z=dirty gray-canary-yellow" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "mmm" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "Pmmn" } ], "name": "Space group" }, { "scalars": [ { "value": "Orthorhombic dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Lindgrenite", "title": "Wikipedia: Lindgrenite" } ], "names": [ "Lindgrenite" ], "chemicalFormula": "Cu$_{3}$(MoO$_{4}$)$_{2}$(OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Molybdate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "7.GB.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "48.3.1.1" } ], "name": "Dana classification" }, { "scalars": [ { "value": "5.394" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "14.023" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.608" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "98.5" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Green-yellowish green" } ], "name": "Color" }, { "scalars": [ { "value": "Tabular-platey crystals, may be acicular, massive or crust forming" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {010} and {101}, poor on {100}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Micaceous" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "4.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Greasey" } ], "name": "Luster" }, { "scalars": [ { "value": "Pale green" } ], "name": "Streak" }, { "scalars": [ { "value": "4.2" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.930" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "2.002" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "2.020" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.090" } ], "name": "Birefringence" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 2$_{1}$/n" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Pharmacolite", "title": "Wikipedia: Pharmacolite" } ], "names": [ "Pharmacolite" ], "chemicalFormula": "CaHAsO$_{4}$.2(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Arsenate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "8.CJ.50" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "39.1.1.2" } ], "name": "Dana classification" }, { "scalars": [ { "value": "5.959" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "15.313" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.357" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "114.67" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless, white, pale gray" } ], "name": "Color" }, { "scalars": [ { "value": "Commonly acicular, silky fibrous, botryoidal-stalactitic, rare as elongated flattened crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {010}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Flexible" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2-2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, pearly on cleavages" } ], "name": "Luster" }, { "scalars": [ { "value": "2.53-2.725" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.580-1.583" } ], "name": "Refractive index (n$\\alpha$)" }, { "scalars": [ { "value": "1.589-1.590" } ], "name": "Refractive index (n$\\beta$)" }, { "scalars": [ { "value": "1.590-1.594" } ], "name": "Refractive index (n$\\gamma$)" }, { "scalars": [ { "value": "0.010-0.011" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Not pleochroic" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "Ia" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic domatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Cornwallite", "title": "Wikipedia: Cornwallite" } ], "names": [ "Cornwallite" ], "chemicalFormula": "Cu$_{5}$(AsO$_{4}$)$_{2}$(OH)$_{4}$", "properties": [ { "scalars": [ { "value": "Arsenate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "8.BD.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "41.4.2.2" } ], "name": "Dana classification" }, { "scalars": [ { "value": "17.33" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.82" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "4.60" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "92.22" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Verdigis green, blackish-green, emerald-green" } ], "name": "Color" }, { "scalars": [ { "value": "Microcrystalline radial fibrous, botryoidal-globular crusts" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Distinct in one direction" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "4.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Sub-vitreous, resinous, waxy" } ], "name": "Luster" }, { "scalars": [ { "value": "Apple green" } ], "name": "Streak" }, { "scalars": [ { "value": "4.17" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.810-1.820" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.815-1.860" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.850-1.880" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.040-0.060" } ], "name": "Birefringence" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P2$_{1}$/a" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Pyrophanite", "title": "Wikipedia: Pyrophanite" } ], "names": [ "Pyrophanite" ], "chemicalFormula": "MnTiO$_{3}$", "properties": [ { "scalars": [ { "value": "Oxide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "4.CB.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "4.3.5.3" } ], "name": "Dana classification" }, { "scalars": [ { "value": "5.13948(7)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "14.2829(4)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "6" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Deep blood-red-greenish black" } ], "name": "Color" }, { "scalars": [ { "value": "Rarely as rosettes of hexagonal plates, typically granular, scaly, occurs as exsolution lamenae in franklinite and spinel" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {0221}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Submetallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Ochre yellow" } ], "name": "Streak" }, { "scalars": [ { "value": "4.537" } ], "conditions": [ { "scalars": [ { "value": "measured" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.481" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "2.210" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.271" } ], "name": "Birefringence" }, { "scalars": [ { "value": "$\\bar{3}$" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "R$\\bar{3}$" } ], "name": "Space group" }, { "scalars": [ { "value": "Trigonal rhombohedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Cliftonite", "title": "Wikipedia: Cliftonite" } ], "names": [ "Cliftonite" ], "chemicalFormula": "C", "properties": [ { "scalars": [ { "value": "Native element mineral" } ], "name": "Category" }, { "scalars": [ { "value": "Gray" } ], "name": "Color" }, { "scalars": [ { "value": "Octahedra, cubes, cubo-octahedra, cubo-dodecahedra, isolated or aggregated, ca. 20 $\\mu$m in size" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Hexagonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "1" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Sub-metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "gray" } ], "name": "Streak" }, { "scalars": [ { "value": "6/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 6$_{3}$/mmc" } ], "name": "Space group" }, { "scalars": [ { "value": "Hexagonal dihexagonal dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Arquerite", "title": "Wikipedia: Arquerite" } ], "names": [ "Arquerite" ], "chemicalFormula": "(Ag,Hg)", "properties": [ { "scalars": [ { "value": "Silver White" } ], "name": "Color" }, { "scalars": [ { "value": "Cubic" } ], "name": "Crystal system" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Tangeite", "title": "Wikipedia: Tangeite" } ], "names": [ "Tangeite" ], "chemicalFormula": "CaCu(VO$_{4}$)(OH)", "properties": [ { "scalars": [ { "value": "Vanadate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "08.BH.35" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "41.05.01.06" } ], "name": "Dana classification" }, { "scalars": [ { "value": "7.45" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "9.26" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.91" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Yellow, yellow-green, olive green, green-dark green" } ], "name": "Color" }, { "scalars": [ { "value": "Rarely as short prismatic crystals, commonly as fibrous-botryoidal encrustations" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {010}, good on {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, pearly on cleavage faces" } ], "name": "Luster" }, { "scalars": [ { "value": "Light yellow green" } ], "name": "Streak" }, { "scalars": [ { "value": "3.75-3.84" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.010" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "2.050" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "2.090" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.08" } ], "name": "Birefringence" }, { "scalars": [ { "value": "2 2 2" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 2$_{1}$2$_{1}$2$_{1}$" } ], "name": "Space group" }, { "scalars": [ { "value": "Orthorhombic disphenoidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Urusovite", "title": "Wikipedia: Urusovite" } ], "names": [ "Urusovite" ], "chemicalFormula": "CuAlAsO$_{5}$", "properties": [ { "scalars": [ { "value": "Arsenate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "08.BB.60" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "38.05.09.02" } ], "name": "Dana classification" }, { "scalars": [ { "value": "7.314" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "10.223" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.576" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "99.79" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Light green" } ], "name": "Color" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Fracture" }, { "scalars": [ { "value": "4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "conditions": [ { "scalars": [ { "value": "Glassy" } ], "name": "Note" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "1.672" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.718" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.722" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.050" } ], "name": "Birefringence" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 2$_{1}$/c" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Zincolivenite", "title": "Wikipedia: Zincolivenite" } ], "names": [ "Zincolivenite" ], "chemicalFormula": "CuZn(AsO$_{4}$)(OH)", "properties": [ { "scalars": [ { "value": "Arsenate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "08.BB.30" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "41.06.06.06" } ], "name": "Dana classification" }, { "scalars": [ { "value": "8.5839(15)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8.5290(13)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.9696(9)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Green, greenish blue" } ], "name": "Color" }, { "scalars": [ { "value": "Prismatic crystals, radiating" } ], "name": "Crystal 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"scalars": [ { "value": "Parallel extinction" } ], "name": "extinction" }, { "scalars": [ { "value": "2/m2/m2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "Pnnm" } ], "name": "Space group" }, { "scalars": [ { "value": "Orthorhombic dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Brezinaite", "title": "Wikipedia: Brezinaite" } ], "names": [ "Brezinaite" ], "chemicalFormula": "Cr$_{3}$S$_{4}$", "properties": [ { "scalars": [ { "value": "Sulfide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.DA.15" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "02.10.02.02" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Brownish gray, gray" } ], "name": "Color" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "3.5-4.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic-dull" } ], "name": "Luster" }, { "scalars": [ { "value": "4.12" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Poudretteite", "title": "Wikipedia: Poudretteite" } ], "names": [ "Poudretteite" ], "chemicalFormula": "KNa$_{2}$B$_{3}$Si$_{12}$O$_{30}$", "properties": [ { "scalars": [ { "value": "Cyclosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.CM.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "63.02.01a.08" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Colorless, Light pink" } ], "name": "Color" }, { "scalars": [ { "value": "Roughly equant barrel-shaped prismatic crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Hexagonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal, splintery" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "conditions": [ { "scalars": [ { "value": "Glassy" } ], "name": "Note" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.51" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.511-1.532" } ], "name": "Refractive index" }, { "scalars": [ { "value": "0.021" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Colorless-pink" } ], "name": "Pleochroism" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Grandidierite", "title": "Wikipedia: Grandidierite" } ], "names": [ "Grandidierite" ], "chemicalFormula": "(Mg,Fe$^{2+}$)Al$_{3}$(BO$_{3}$)(SiO$_{4}$)O$_{2}$", "properties": [ { "scalars": [ { "value": "Nesosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.AJ.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "54.01.01.01" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Bluish green" } ], "name": "Color" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "none" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Fracture" }, { "scalars": [ { "value": "7.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, Pearly" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.976" } ], "name": "Density" }, { "scalars": [ { "value": "1.583-1.639" } ], "name": "Refractive index" }, { "scalars": [ { "value": "Visible" } ], "name": "Pleochroism" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Millerite", "title": "Wikipedia: Millerite" } ], "names": [ "Millerite" ], "chemicalFormula": "NiS", "properties": [ { "scalars": [ { "value": "Sulfide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "02.CC.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "9.607" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "3.143" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "9" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Typically acicular often in radial sprays-also massive" } ], "conditions": [ { "scalars": [ { "value": "needle-like" } ], "name": "Note" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal Hexagonal Scalenohedral" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {10$\\bar{1}$1} and {01$\\bar{1}$2}-obscured by typical form" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle, capillary crystals elastic" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3-3.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Greenish black" } ], "name": "Streak" }, { "scalars": [ { "value": "5.3-5.5" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "brittle and becomes magnetic on heating" } ], "name": "Other" }, { "scalars": [ { "value": "Trigonal $\\bar{3}$2/m" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Mawsonite", "title": "Wikipedia: Mawsonite" } ], "names": [ "Mawsonite" ], "chemicalFormula": "Cu$_{6}$Fe$_{2}$SnS$_{8}$", "properties": [ { "scalars": [ { "value": "Sulfosalt minerals" } ], "name": "Category" }, { "scalars": [ { "value": "2.CB.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "7.603" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.358" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "1" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "309.72 $^{3}$" } ], "units": "$\\AA$", "name": "Unit cell (V)" }, { "scalars": [ { "value": "Brownish orange" } ], "name": "Color" }, { "scalars": [ { "value": "Exsolution grains within bornite" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Tetragonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "3.5-4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "4.65" } ], "conditions": [ { "scalars": [ { "value": "calculated" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Strong" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Zn,Se" } ], "name": "impurities" }, { "scalars": [ { "value": "Magnetic" } ], "name": "Other" }, { "scalars": [ { "value": "$\\bar{4}$2m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P$\\bar{4}$m2" } ], "name": "Space group" }, { "scalars": [ { "value": "Tetragonal scalenohedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Janggunite", "title": "Wikipedia: Janggunite" } ], "names": [ "Janggunite" ], "chemicalFormula": "Mn$_{5-x}$(Mn,Fe)$_{1+x}$O$_{8}$(OH)$_{6}$", "properties": [ { "scalars": [ { "value": "Oxide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "4.FG.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "9.324" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "14.05" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "7.956" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Black" } ], "name": "Color" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect,one direction" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Fragile" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2-3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Dull" } ], "name": "Luster" }, { "scalars": [ { "value": "Brownish black-dark brown" } ], "name": "Streak" }, { "scalars": [ { "value": "3.59" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Playfairite", "title": "Wikipedia: Playfairite" } ], "names": [ "Playfairite" ], "chemicalFormula": "Pb$_{16}$Sb$_{18}$S$_{43}$", "properties": [ { "scalars": [ { "value": "Sulfosalt minerals, Sulfides" } ], "name": "Category" }, { "scalars": [ { "value": "3.6.4.1" } ], "name": "Dana classification" }, { "scalars": [ { "value": "02.LB.30, 2/E.20-40" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Lead gray-black" } ], "name": "Color" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect" } ], "name": "Cleavage" }, { "scalars": [ { "value": "3.5-4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Strong reflection" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Black" } ], "name": "Streak" }, { "scalars": [ { "value": "5.72" } ], "name": "Density" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Brianyoungite", "title": "Wikipedia: Brianyoungite" } ], "names": [ "Brianyoungite" ], "chemicalFormula": "Zn$_{3}$(CO$_{3}$,SO$_{4}$)(OH)$_{4}$", "properties": [ { "scalars": [ { "value": "Carbonate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "15.724" } ], "units": "$\\AA$", "name": "Unit cell (15.724)" }, { "scalars": [ { "value": "6.256" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.427" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "90" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "5/C.01-105 or 5.BF.30" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "17.1.15" } ], "name": "Dana classification" }, { "scalars": [ { "value": "White" } ], "name": "Color" }, { "scalars": [ { "value": "Rosettes of thin blades" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic pseudo-orthorhombic with $\\beta$ close-90$^{o}$" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {100}, possible on {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Probably 2-2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.635" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.650" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "1.635" } ], "name": "Birefringence" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.93-4.09" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Readily soluble with effervescence in acids" } ], "name": "Solubility" }, { "scalars": [ { "value": "Non-fluorescent" } ], "name": "Other" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "C 2/m" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Qingsongite", "title": "Wikipedia: Qingsongite" } ], "names": [ "Qingsongite" ], "chemicalFormula": "BN", "properties": [ { "scalars": [ { "value": "Native element minerals: nitrides" } ], "name": "Category" }, { "scalars": [ { "value": "3.61" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "Inclusions in chromium-rich rocks" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Cubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Not radioactive, non-magnetic" } ], "name": "Other" }, { "scalars": [ { "value": "$\\bar{4}$3m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "F$\\bar{4}$3m" } ], "name": "Space group" }, { "scalars": [ { "value": "Cubic hextetrahedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Hi\u00e4rneite", "title": "Wikipedia: Hi\u00e4rneite" } ], "names": [ "Hi\u00e4rneite" ], "chemicalFormula": "(Ca,Mn,Na)$_{2}$(Zr,Mn$^{3+}$)$_{5}$(Sb,Ti,Fe)$_{2}$O$_{16}$", "properties": [ { "scalars": [ { "value": "Oxide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "4.DL.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "15.264" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "10.089" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Red" } ], "name": "Color" }, { "scalars": [ { "value": "Prismatic, subhedral" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Tetragonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "5.44" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.120" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "2.160" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.040" } ], "name": "Birefringence" }, { "scalars": [ { "value": "4/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "I 4$_{1}$/acd" } ], "name": "Space group" }, { "scalars": [ { "value": "Tetragonal ditetragonal dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Keatite", "title": "Wikipedia: Keatite" } ], "names": [ "Keatite" ], "chemicalFormula": "SiO$_{2}$", "properties": [ { "scalars": [ { "value": "Silicate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "Microscopic inclusions" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "4.DA.45" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Tetragonal" } ], "name": "Crystal system" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Eveslogite", "title": "Wikipedia: Eveslogite" } ], "names": [ "Eveslogite" ], "chemicalFormula": "SiO$_{2}$", "properties": [ { "scalars": [ { "value": "Inosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "9.DG.97" } ], "name": "Strunz classification" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Brokenhillite", "title": "Wikipedia: Brokenhillite" } ], "names": [ "Brokenhillite" ], "chemicalFormula": "(Mn,Fe)32[Si24O60]OH29Cl11", "properties": [ { "scalars": [ { "value": "Mineralogy" } ], "name": "Category" }, { "scalars": [ { "value": "Inosilicate" } ], "name": "Dana classification" }, { "scalars": [ { "value": "Brown, Red, Maroon" } ], "name": "Color" }, { "scalars": [ { "value": "Hexagonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "N/A" } ], "name": "Twinning" }, { "scalars": [ { "value": "Good" } ], "name": "Cleavage" }, { "scalars": [ { "value": "N/A" } ], "name": "Fracture" }, { "scalars": [ { "value": "4-5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Reddish Brown" } ], "name": "Streak" }, { "scalars": [ { "value": "6mm" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Franklinphilite", "title": "Wikipedia: Franklinphilite" } ], "names": [ "Franklinphilite" ], "chemicalFormula": "K$_{4}$(Mn)$_{48}$(Si,Al)$_{72}$(O,OH)$_{216}$.n(H$_{2}$O) (with n~6)", "properties": [ { "scalars": [ { "value": "Silicate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "9.EG.40" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.52" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "9.56" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "36.57" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "$\\beta$=$\\gamma$=essentially 90" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\alpha$)" }, { "scalars": [ { "value": "Dark brown" } ], "name": "Color" }, { "scalars": [ { "value": "Fine radial aggregates" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Triclinic pseudo-hexagonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Imperfect on {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-slightly resinous" } ], "name": "Luster" }, { "scalars": [ { "value": "2.6-2.8" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.545" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.583" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.583" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.038" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Distinct, X=pale yellow, Y=Z=deep brown" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "P1 or P$\\bar{1}$" } ], "name": "Space group" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Ephesite", "title": "Wikipedia: Ephesite" } ], "names": [ "Ephesite" ], "chemicalFormula": "NaLiAl$_{2}$(Al$_{2}$Si$_{2}$)O$_{10}$(OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Phyllosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "9.EC.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.12" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8.853" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "19.303" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "95.08" } ], "units": "$^{\\circ}$", "name": "Unit cell (beta)" }, { "scalars": [ { "value": "Brownish pink, pearl gray, pale green" } ], "name": "Color" }, { "scalars": [ { "value": "Flakes" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic or triclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Commonly twinned about [310] or [3$\\bar{1}$0]" } ], "name": "Twinning" }, { "scalars": [ { "value": "Perfect on {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3.5-4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, pearly on cleavage" } ], "name": "Luster" }, { "scalars": [ { "value": "2.984" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.592-1.595" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.624-1.625" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.625-1.627" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.033" } ], "name": "Birefringence" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "C 2/c" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" }, { "scalars": [ { "value": "also reported is a triclinic polytype" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Chvaleticeite", "title": "Wikipedia: Chvaleticeite" } ], "names": [ "Chvaleticeite" ], "chemicalFormula": "(Mn$^{2+}$, Mg)[SO$_{4}$].6(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Sulfate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "7.CB.25" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "29.6.8.6" } ], "name": "Dana classification" }, { "scalars": [ { "value": "10.05" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "7.24" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "24.31" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "98" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "White, pale pink, yellowish green" } ], "name": "Color" }, { "scalars": [ { "value": "Efflorescence coatings, minute granular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Poor" } ], "name": "Cleavage" }, { "scalars": [ { "value": "1.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.84" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.457" } ], "name": "Refractive index (n$\\alpha$)" }, { "scalars": [ { "value": "1.506" } ], "name": "Refractive index (n$\\gamma$)" }, { "scalars": [ { "value": "0.049" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Soluble in water" } ], "name": "Solubility" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "C 2/c" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Caldasite", "title": "Wikipedia: Caldasite" } ], "names": [ "Caldasite" ], "chemicalFormula": "ZrSiO4, ZrO2, U3O8", "properties": [ { "scalars": [ { "value": "Mineralogy" } ], "name": "Category" }, { "scalars": [ { "value": "green, greenish, greenish-brown, or light green, dark brown, reddish-brown" } ], "name": "Color" }, { "scalars": [ { "value": "4.6-4.8" } ], "name": "Density" }, { "scalars": [ { "value": "good" } ], "name": "Cleavage" }, { "scalars": [ { "value": "N/A" } ], "name": "Fracture" }, { "scalars": [ { "value": "greenish-brown" } ], "name": "Streak" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Bicchulite", "title": "Wikipedia: Bicchulite" } ], "names": [ "Bicchulite" ], "chemicalFormula": "Ca$_{2}$(Al$_{2}$SiO$_{6}$)(OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Silicate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "9.FB.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Cubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "White or grey, colorless in thin sections" } ], "name": "Color" }, { "scalars": [ { "value": "Indistinct" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Earthy, powdery" } ], "name": "Luster" }, { "scalars": [ { "value": "2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "White" } ], "name": "Streak" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Gugiaite", "title": "Wikipedia: Gugiaite" } ], "names": [ "Gugiaite" ], "chemicalFormula": "Ca$_{2}$[BeSi$_{2}$O$_{7}$]", "properties": [ { "scalars": [ { "value": "Sorosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "09.BB.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "55.04.02.06" } ], "name": "Dana classification" }, { "scalars": [ { "value": "7.43" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.024" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless" } ], "name": "Color" }, { "scalars": [ { "value": "Tetragonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {010}, distinct {001}, indistinct on {110}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven-Flat surfaces fractured in an uneven pattern" } ], "conditions": [ { "scalars": [ { "value": "not cleavage" } ], "name": "Note" } ], "name": "Fracture" }, { "scalars": [ { "value": "5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, glassy" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.03" } ], "name": "Density" }, { "scalars": [ { "value": "1.664" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.672" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.008" } ], "name": "Birefringence" }, { "scalars": [ { "value": "strongly piezoelectric" } ], "name": "Other" }, { "scalars": [ { "value": "4bar2m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P4bar2m" } ], "name": "Space group" }, { "scalars": [ { "value": "tetragonal-scalenohedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Chatkalite", "title": "Wikipedia: Chatkalite" } ], "names": [ "Chatkalite" ], "chemicalFormula": "Cu$_{6}$Fe$^{2+}$Sn$_{6}$S$_{8}$", "properties": [ { "scalars": [ { "value": "Sulfide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "2.CB.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "7.61(1)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.373(5)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "1" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Rose-brown orange, Pale rose in reflected light" } ], "name": "Color" }, { "scalars": [ { "value": "Rounded grains,-100 $\\mu$m within tetrahedrite" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Tetragonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "4.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "5.00" } ], "conditions": [ { "scalars": [ { "value": "calculated" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "$\\bar{4}$2m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P $\\bar{4}$m2" } ], "name": "Space group" }, { "scalars": [ { "value": "Tetragonal scalenohedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Ferrogedrite", "title": "Wikipedia: Ferrogedrite" } ], "names": [ "Ferrogedrite" ], "chemicalFormula": "$\\Box$$Fe$^{2+}$_{2}$(Fe$^{2+}$_{3}$Al$_{2}$)(Si$_{6}$Al$_{2}$)O$_{22}$(OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Inosilicates, Amphibole" } ], "name": "Category" }, { "scalars": [ { "value": "9.DD.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "18.52" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "17.94" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.31" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (
Z)" }, { "scalars": [ { "value": "Pale greenish-gray-brown" } ], "name": "Color" }, { "scalars": [ { "value": "Crystals prismatic-bladed, fibrous" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {210}, with 54$^{\\circ}$ and 126$^{\\circ}$ intersections" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5.5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "Gray white" } ], "name": "Streak" }, { "scalars": [ { "value": "3.566" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.642-1.694" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.649-1.710" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.661-1.722" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.019-0.028" } ], "name": "Birefringence" }, { "scalars": [ { "value": "X=pale green, Y=brownish green, , Z=greenish blue" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "2/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P nma" } ], "name": "Space group" }, { "scalars": [ { "value": "Orthorhombic dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Hidalgoite", "title": "Wikipedia: Hidalgoite" } ], "names": [ "Hidalgoite" ], "chemicalFormula": "PbAl$_{3}$(AsO$_{4}$)(SO$_{4}$)(OH)$_{4}$", "properties": [ { "scalars": [ { "value": "Sulfate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "8.BL.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "7.04" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "16.99" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "3" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "White, pale green, pistachio-green, emerald-green" } ], "name": "Color" }, { "scalars": [ { "value": "Massive, porcellaneous-porous, spherulitic aggregates" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Irregular-conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "4.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Earthy or dull in aggregates" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.71-3.96" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.713-1.730" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "n$_{\\epsilon}$" } ], "name": "Refractive index" }, { "scalars": [ { "value": "1.715-1.735" } ], "name": "Refractive index" }, { "scalars": [ { "value": "$\\bar{3}$2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "R$\\bar{3}$m" } ], "name": "Space group" }, { "scalars": [ { "value": "Trigonal hexagonal scalenohedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Farneseite", "title": "Wikipedia: Farneseite" } ], "names": [ "Farneseite" ], "chemicalFormula": "(Na,Ca,K)$_{56}$(Al$_{6}$Si$_{6}$O$_{24}$)$_{7}$(SO$_{4}$)$_{12}$.6H$_{2}$O", "properties": [ { "scalars": [ { "value": "Tec-silicate" } ], "name": "Category" }, { "scalars": [ { "value": "9.FB.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "12.8784" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "37.0078" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "1" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless" } ], "name": "Color" }, { "scalars": [ { "value": "Prismatic crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Hexagonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Poor on {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "2.52" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "n$_{\\omega}$" } ], "name": "Refractive index" }, { "scalars": [ { "value": "1.499" } ], "name": "Refractive index" }, { "scalars": [ { "value": "1.503" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.0040" } ], "name": "Birefringence" }, { "scalars": [ { "value": "6/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 6$_{3}$/m" } ], "name": "Space group" }, { "scalars": [ { "value": "Hexagonal dihexagonal dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Greifensteinite", "title": "Wikipedia: Greifensteinite" } ], "names": [ "Greifensteinite" ], "chemicalFormula": "Ca$_{2}$Fe$^{2+}$$_{5}$Be$_{4}$(PO$_{4}$)$_{6}$(OH)$_{4}$.6H$_{2}$O", "properties": [ { "scalars": [ { "value": "Phosphate mineral, Roscherite group" } ], "name": "Category" }, { "scalars": [ { "value": "8.DA.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "42.7.7.4" } ], "name": "Dana classification" }, { "scalars": [ { "value": "15.903" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "11.885" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.677" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "94.68" } ], "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Yellow green, olive green, light brown" } ], "name": "Color" }, { "scalars": [ { "value": "Prismatic" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Good on {100}" } ], "conditions": [ { "scalars": [ { "value": "or parting on {100}" } ], "name": "Note" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "4.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "White, greenish" } ], "name": "Streak" }, { "scalars": [ { "value": "2.93" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "n$_{\\alpha}$:" } ], "name": "Refractive index" }, { "scalars": [ { "value": "1.624" } ], "name": "Refractive index" }, { "scalars": [ { "value": "n$_{\\beta}$:" } ], "name": "Refractive index" }, { "scalars": [ { "value": "1.634" } ], "name": "Refractive index" }, { "scalars": [ { "value": "n$_{\\gamma}$:" } ], "name": "Refractive index" }, { "scalars": [ { "value": "1.638" } ], "name": "Refractive index" }, { "scalars": [ { "value": "0.014" } ], "name": "Birefringence" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "C 2/c" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Hubeite", "title": "Wikipedia: Hubeite" } ], "names": [ "Hubeite" ], "chemicalFormula": "Ca2Mn2+Fe3+ [Si4O12(OH)] (H2O)2", "properties": [ { "scalars": [ { "value": "Sorosilicate of the [Si4O13] group, Aka-reite group" } ], "name": "Category" }, { "scalars": [ { "value": "Dark-pale brown" } ], "name": "Color" }, { "scalars": [ { "value": "Aggregates of inter-grown crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Triclinc" } ], "name": "Crystal system" }, { "scalars": [ { "value": "1 good cleavage parallel-c-axis" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Conchoidal fracture" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "Orange-brown" } ], "name": "Streak" }, { "scalars": [ { "value": "3.02" } ], "conditions": [ { "scalars": [ { "value": "/cm$^3$" } ], "name": "Note" } ], "name": "Density" }, { "scalars": [ { "value": "0.023" } ], "conditions": [ { "scalars": [ { "value": "$\\gamma$-$\\alpha$" } ], "name": "Note" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Yes" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "None" } ], "name": "fluorescence" }, { "scalars": [ { "value": "" } ], "name": "Space group" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Gordaite", "title": "Wikipedia: Gordaite" } ], "names": [ "Gordaite" ], "chemicalFormula": "NaZn$_{4}$(SO$_{4}$)(OH)$_{6}$Cl.6H$_{2}$O", "properties": [ { "scalars": [ { "value": "Sulfate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "7.DF.50" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "8.413" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "13.095" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless-white, pale green with copper substitution" } ], "name": "Color" }, { "scalars": [ { "value": "Thin tabular flakes or blades, in rosette aggregates" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Trigonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect on {0001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Flexible" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-pearly" } ], "name": "Luster" }, { "scalars": [ { "value": "2.627" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.561" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.538" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.023" } ], "name": "Birefringence" }, { "scalars": [ { "value": "$\\bar{3}$" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P$\\bar{3}$" } ], "name": "Space group" }, { "scalars": [ { "value": "Trigonal rhombohedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Metacinnabar", "title": "Wikipedia: Metacinnabar" } ], "names": [ "Metacinnabar" ], "chemicalFormula": "HgS", "properties": [ { "scalars": [ { "value": "Sulfide mineral" } ], "name": "Category" }, { "scalars": [ { "value": "2.CB.05a" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "5.8717(5)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Grayish black" } ], "name": "Color" }, { "scalars": [ { "value": "Massive, rarely as tetrahedral crystals, as incrustations" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Cubic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Common as lamellae on {111}" } ], "name": "Twinning" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Subconchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "Black" } ], "name": "Streak" }, { "scalars": [ { "value": "7.7-7.8" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "$\\bar{4}$3m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "F$\\bar{4}$3m" } ], "name": "Space group" }, { "scalars": [ { "value": "Isometric hextetrahedral" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Rodalquilarite", "title": "Wikipedia: Rodalquilarite" } ], "names": [ "Rodalquilarite" ], "chemicalFormula": "H$_{3}$Fe$^{3+}$$_{2}$(Te$^{4+}$O$_{3}$)$_{4}$Cl", "properties": [ { "scalars": [ { "value": "Tellurite mineral" } ], "name": "Category" }, { "scalars": [ { "value": "4.JL.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "8.95" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "5.09" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "6.63" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "103.17" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\alpha$)" }, { "scalars": [ { "value": "107.08" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "77.87" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\gamma$)" }, { "scalars": [ { "value": "1" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Emerald--grass-green" } ], "name": "Color" }, { "scalars": [ { "value": "Crusts of s-ut crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Triclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "One good cleavage plane" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Very brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2-3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Greasy" } ], "name": "Luster" }, { "scalars": [ { "value": "Greenish yellow" } ], "name": "Streak" }, { "scalars": [ { "value": "4.97-5.15" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2.100" } ], "name": "Refractive index (n$\\alpha$)" }, { "scalars": [ { "value": "2.200" } ], "name": "Refractive index (n$\\gamma$)" }, { "scalars": [ { "value": "0.100" } ], "name": "Birefringence" }, { "scalars": [ { "value": "P1 or P$\\bar{1}$" } ], "name": "Space group" }, { "scalars": [ { "value": "Triclinic pinacoidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Cuspidine", "title": "Wikipedia: Cuspidine" } ], "names": [ "Cuspidine" ], "chemicalFormula": "Ca$_{4}$(Si$_{2}$O$_{7}$)(F,OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Sorosilicate" } ], "name": "Category" }, { "scalars": [ { "value": "9.BE.17" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "10.93" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "10.57" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "7.57" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "110.11" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "2" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless, tan, light brown, pale red" } ], "name": "Color" }, { "scalars": [ { "value": "Minute spearhead-shaped crystals, acicular, granular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Simple, lamellar, polysynthetic on {100}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Good on {001} imperfect on {110}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "5-6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "2.85-2.96" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.586-1.594" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.589-1.596" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.598-1.606" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.012" } ], "name": "Birefringence" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 2$_{1}$/c" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Piypite", "title": "Wikipedia: Piypite" } ], "names": [ "Piypite" ], "chemicalFormula": "K$_{2}$Cu$_{2}$O(SO$_{4}$)$_{2}$", "properties": [ { "scalars": [ { "value": "Sulfate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "7.BC.40" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "13.6" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "4.95" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Emerald-green, dark green, black" } ], "name": "Color" }, { "scalars": [ { "value": "Acicular crystals elongated along [001], square cross section, commonly hollow, also as mosslike aggregates" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Tetragonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Perfect, parallel-elongation" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "2.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-greasy" } ], "name": "Luster" }, { "scalars": [ { "value": "Yellowish green" } ], "name": "Streak" }, { "scalars": [ { "value": "3.0-3.1" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.583" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.695" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.112" } ], "name": "Birefringence" }, { "scalars": [ { "value": "Distinct, O=pale green, yellowish green, E=deep green, pale yellowish green" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Soluble in water, leaves residue" } ], "name": "Solubility" }, { "scalars": [ { "value": "4" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "I 4" } ], "name": "Space group" }, { "scalars": [ { "value": "Tetragonal pyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Pinnoite", "title": "Wikipedia: Pinnoite" } ], "names": [ "Pinnoite" ], "chemicalFormula": "MgB$_{2}$O(OH)$_{6}$", "properties": [ { "scalars": [ { "value": "Borate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "6.BB.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "7.617" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8.19" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Colorless, light yellow, yellow green" } ], "name": "Color" }, { "scalars": [ { "value": "Short prismatic crystals uncommon, radial fibrous clusters" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Tetragonal" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "3.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "2.27" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.565" } ], "name": "Refractive index (n$_{\\omega}$)" }, { "scalars": [ { "value": "1.575" } ], "name": "Refractive index (n$_{\\epsilon}$)" }, { "scalars": [ { "value": "0.010" } ], "name": "Birefringence" }, { "scalars": [ { "value": "4" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P 4$_{2}$" } ], "name": "Space group" }, { "scalars": [ { "value": "Tetragonal pyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Kuratite", "title": "Wikipedia: Kuratite" } ], "names": [ "Kuratite" ], "chemicalFormula": "Ca$_{2}$(Fe$^{2+}$$_{5}$Ti)O$_{2}$[Si$_{4}$Al$_{2}$O$_{18}$]", "properties": [ { "scalars": [ { "value": "Inosilicates" } ], "name": "Category" }, { "scalars": [ { "value": "10.513(7)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "10.887(7)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "9.004(18)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "Triclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "$\\bar{1}$" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P$\\bar{1}$" } ], "name": "Space group" }, { "scalars": [ { "value": "Triclinic pinacoidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Putnisite", "title": "Wikipedia: Putnisite" } ], "names": [ "Putnisite" ], "chemicalFormula": "SrCa$_{4}$Cr$_{8}$$^{3+}$(CO$_{3}$)$_{8}$(SO$_{4}$)(OH)$_{16}$.25 H$_{2}$O", "properties": [ { "scalars": [ { "value": "15.351" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "20.421" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "18.270" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "Purple" } ], "name": "Color" }, { "scalars": [ { "value": "Pseudocubic crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "[100], [010] and [001] good" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle-uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "1.5-2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "1.552" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.583" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "and" } ], "name": "Refractive index" }, { "scalars": [ { "value": "1.599" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "Distinct: X pale bluish grey, Y pale purple, Z pale purple" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Pink" } ], "name": "Streak" }, { "scalars": [ { "value": "2.20" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Space group: Pnma" } ], "name": "Orthorhombic" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Terbium_gallium_garnet", "title": "Wikipedia: Terbium gallium garnet" } ], "names": [ "Terbium gallium garnet" ], "chemicalFormula": "Tb$_{3}$Ga$_{5}$O$_{12}$", "properties": [ { "scalars": [ { "value": "Synthetic mineral" } ], "name": "Category" }, { "scalars": [ { "value": "1.95" } ], "name": "Refractive index" }, { "scalars": [ { "value": "Paramagnetic material" } ], "name": "Other" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Fels\u0151b\u00e1nyaite", "title": "Wikipedia: Fels\u0151b\u00e1nyaite" } ], "names": [ "Fels\u0151b\u00e1nyaite" ], "chemicalFormula": "Al$_{4}$(SO$_{4}$)(OH)$_{10}$.4H$_{2}$O", "properties": [ { "scalars": [ { "value": "Sulfate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "7.DD.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "13.026" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "10.015" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "11.115" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "104.34" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "White-pale yellow, pale brown" } ], "name": "Color" }, { "scalars": [ { "value": "Globular masses, minute rhombic crystals" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Distinct-good on {010} and {100}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "1.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, pearly on cleavage surfaces" } ], "name": "Luster" }, { "scalars": [ { "value": "2.33" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.515-1.540" } ], "name": "Refractive index (n)" }, { "scalars": [ { "value": "2" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P2$_{1}$" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic sphenoidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Carminite", "title": "Wikipedia: Carminite" } ], "names": [ "Carminite" ], "chemicalFormula": "PbFe$^{3+}$$_{2}$(AsO$_{4}$)$_{2}$(OH)$_{2}$", "properties": [ { "scalars": [ { "value": "Arsenate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "639.87" } ], "units": "g", "name": "Molecular weight" }, { "scalars": [ { "value": "7/B.28-40 or 8.BH.30" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "41 Anhydrousphosphates arsenatesand vanadates containing hydroxyl or halogen" } ], "name": "Dana classification" }, { "scalars": [ { "value": "16.591" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "7.58" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "12.285" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "8" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Carmine red" } ], "name": "Color" }, { "scalars": [ { "value": "Typically bladed crystals, also acicular crystals, in spherical or tufted aggregates and as fibrous or drusy masses" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Orthorhombic (2/m 2/m 2/m) Space group: C ccm or C cc2" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Distinct on {110}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Brittle" } ], "conditions": [ { "scalars": [ { "value": "D,All" } ], "name": "Note" } ], "name": "Tenacity" }, { "scalars": [ { "value": "3.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous, pearly on cleavages" } ], "name": "Luster" }, { "scalars": [ { "value": "2.070" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "2.070" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "2.080" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.010" } ], "name": "Birefringence" }, { "scalars": [ { "value": "strong, X=pale yellowish red, Y=Z=dark carmine red" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "Reddish yellow" } ], "name": "Streak" }, { "scalars": [ { "value": "5.03-5.18" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "Slowly soluble in HCl with the separation of PbCl$_{2}$, and-tally soluble in HNO$_{3}$" } ], "name": "Solubility" }, { "scalars": [ { "value": "Carminite is not radioactive. No piezoelectric effect could be detected" } ], "name": "Other" }, { "scalars": [ { "value": "2/m 2/m 2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "C ccm" } ], "name": "Space group" }, { "scalars": [ { "value": "Orthorhombic dipyramidal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Billwiseite", "title": "Wikipedia: Billwiseite" } ], "names": [ "Billwiseite" ], "chemicalFormula": "(Sb$^{3+}$)$_{5}$(Nb,Ta)$_{3}$WO$_{18}$", "properties": [ { "scalars": [ { "value": "Oxide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "04.DX" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "54.206(6)" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "4.9163(5)" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.5540(6)" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "90.396(2)" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "Pale yellow" } ], "conditions": [ { "scalars": [ { "value": "with a tinge of green" } ], "name": "Note" } ], "name": "Color" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "{100} Indistinct" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Hackly" } ], "name": "Fracture" }, { "scalars": [ { "value": "5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "unknown" } ], "name": "Refractive index" }, { "scalars": [ { "value": "Colorless, very pale yellow" } ], "name": "Streak" }, { "scalars": [ { "value": "6.33" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "B2/m {B1 1 2/m} {C2/m} {C1 2/m 1}" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Kosmochlor", "title": "Wikipedia: Kosmochlor" } ], "names": [ "Kosmochlor" ], "chemicalFormula": "NaCr$^{3+}$Si$_{2}$O$_{6}$", "properties": [ { "scalars": [ { "value": "Inosilicate mineral" } ], "name": "Category" }, { "scalars": [ { "value": "9.DA.25" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "9.57" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "8.71" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "5.26" } ], "units": "$\\AA$", "name": "Unit cell (c)" }, { "scalars": [ { "value": "107.49" } ], "units": "$^{\\circ}$", "name": "Unit cell ($\\beta$)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Emerald-green" } ], "name": "Color" }, { "scalars": [ { "value": "Prismatic crystals and fibrous aggregates" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Simple, lamellar on {100} and {001}" } ], "name": "Twinning" }, { "scalars": [ { "value": "Good on {110} parting on {001}" } ], "name": "Cleavage" }, { "scalars": [ { "value": "6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "Light green" } ], "name": "Streak" }, { "scalars": [ { "value": "3.51-3.60" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.766" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.781" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.015" } ], "name": "Birefringence" }, { "scalars": [ { "value": "X=yellowish green, Y=blue-green, grass-green, Z=emerald-green" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "C 2/c" } ], "name": "Space group" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Xanthoconite", "title": "Wikipedia: Xanthoconite" } ], "names": [ "Xanthoconite" ], "chemicalFormula": "Ag$_{3}$AsS$_{3}$", "properties": [ { "scalars": [ { "value": "Sulfosalt mineral" } ], "name": "Category" }, { "scalars": [ { "value": "494.72" } ], "units": "g/mol", "name": "Molecular weight" }, { "scalars": [ { "value": "02.GA.10" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Red-orange, Lemon yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "2.5-3.0" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine" } ], "name": "Luster" }, { "scalars": [ { "value": "5.54" }, { "value": "range 5.5-5.6" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Xenophyllite", "title": "Wikipedia: Xenophyllite" } ], "names": [ "Xenophyllite" ], "chemicalFormula": "Na$_{4}$Fe$_{7}$(PO$_{4}$)$_{6}$", "properties": [ { "scalars": [ { "value": "Phosphate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "1052.72" } ], "units": "g/mol", "name": "Molecular weight" }, { "scalars": [ { "value": "08.AC.50" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Triclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "4.72" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Xiangjiangite", "title": "Wikipedia: Xiangjiangite" } ], "names": [ "Xiangjiangite" ], "chemicalFormula": "(Fe$^{3+}$,Al)(UO$_{2}$)$_{4}$(PO$_{4}$)$_{2}$(SO$_{4}$)$_{2}$(OH).22(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Phosphate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "453.91" } ], "units": "g/mol", "name": "Molecular weight" }, { "scalars": [ { "value": "08.EB.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Microscopic crystals, platy" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "1-2" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Silky" } ], "name": "Luster" }, { "scalars": [ { "value": "Light yellow" } ], "name": "Streak" }, { "scalars": [ { "value": "3.47" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Xieite", "title": "Wikipedia: Xieite" } ], "names": [ "Xieite" ], "chemicalFormula": "Fe$^{2+}$Cr$_{2}$O$_{4}$", "properties": [ { "scalars": [ { "value": "Oxide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "453.91" } ], "units": "g/mol", "name": "Molecular weight" }, { "scalars": [ { "value": "04.BB.25" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Golden yellow" } ], "name": "Color" }, { "scalars": [ { "value": "Orthorhombic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "5.34" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Ximengite", "title": "Wikipedia: Ximengite" } ], "names": [ "Ximengite" ], "chemicalFormula": "BiPO$_{4}$", "properties": [ { "scalars": [ { "value": "Phosphate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "303.95" } ], "units": "g/mol", "name": "Molecular weight" }, { "scalars": [ { "value": "08.AD.45" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Colorless" } ], "name": "Color" }, { "scalars": [ { "value": "Trigonal-trapazohedral" } ], "name": "Crystal system" }, { "scalars": [ { "value": "4.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous-Greasy" } ], "name": "Luster" }, { "scalars": [ { "value": "5.53" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Xingzhongite", "title": "Wikipedia: Xingzhongite" } ], "names": [ "Xingzhongite" ], "chemicalFormula": "(Pb,Cu,Fe)(Ir,Pt,Rh)$_{2}$S$_{4}$", "properties": [ { "scalars": [ { "value": "Sulfide minerals" } ], "name": "Category" }, { "scalars": [ { "value": "645.53" } ], "units": "g/mol", "name": "Molecular weight" }, { "scalars": [ { "value": "02.DA.05" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Steel gray" } ], "name": "Color" }, { "scalars": [ { "value": "Isometric-hexoctahedral" } ], "name": "Crystal system" }, { "scalars": [ { "value": "6" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Metallic" } ], "name": "Luster" }, { "scalars": [ { "value": "6.49" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Xitieshanite", "title": "Wikipedia: Xitieshanite" } ], "names": [ "Xitieshanite" ], "chemicalFormula": "Fe$^{3+}$(SO$_{4}$)Cl.7(H$_{2}$O)", "properties": [ { "scalars": [ { "value": "Sulfate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "313.47" } ], "units": "g/mol", "name": "Molecular weight" }, { "scalars": [ { "value": "07.DC.20" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Green, Yellow green" } ], "name": "Color" }, { "scalars": [ { "value": "Acicular" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "2.5-3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "Yellow" } ], "name": "Streak" }, { "scalars": [ { "value": "1.99" } ], "name": "Specific gravity" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Xocolatlite", "title": "Wikipedia: Xocolatlite" } ], "names": [ "Xocolatlite" ], "chemicalFormula": "Ca$_{2}$Mn$^{4+}$$_{2}$(Te$^{6+}$O$_{6}$)$_{2}$ . H$_{2}$O", "properties": [ { "scalars": [ { "value": "Sulfate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "655.24" } ], "units": "g/mol", "name": "Molecular weight" }, { "scalars": [ { "value": "07.DF.85" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "Chocolate brown" } ], "name": "Color" }, { "scalars": [ { "value": "Encrustations, Micaceous" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Conchoidal" } ], "name": "Fracture" }, { "scalars": [ { "value": "2-3" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "Copper brown" } ], "name": "Streak" }, { "scalars": [ { "value": "4.10 g/cc" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "4.1" } ], "conditions": [ { "scalars": [ { "value": "g/cc" } ], "name": "Note" } ], "name": "Density" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Kovdorskite", "title": "Wikipedia: Kovdorskite" } ], "names": [ "Kovdorskite" ], "chemicalFormula": "Mg$_{2}$PO$_{4}$(OH).3H$_{2}$O", "properties": [ { "scalars": [ { "value": "Phosphate minerals" } ], "name": "Category" }, { "scalars": [ { "value": "08.DC.22" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "43.05.08.01" } ], "name": "Dana classification" }, { "scalars": [ { "value": "10.35" } ], "units": "$\\AA$", "name": "Unit cell (a)" }, { "scalars": [ { "value": "12.90 c=4.73" } ], "units": "$\\AA$", "name": "Unit cell (b)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "Translucent white-pale blue-bright pink" } ], "name": "Color" }, { "scalars": [ { "value": "Rough prismatic" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "Monoclinic" } ], "name": "Crystal system" }, { "scalars": [ { "value": "Conchoidal-uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "4" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "2.28" }, { "value": "2.30" } ], "conditions": [ { "scalars": [ { "value": "measured" }, { "value": "calculated" } ], "name": "Note" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "1.527" } ], "name": "Refractive index (n$_{\\alpha}$)" }, { "scalars": [ { "value": "1.542" } ], "name": "Refractive index (n$_{\\beta}$)" }, { "scalars": [ { "value": "1.549" } ], "name": "Refractive index (n$_{\\gamma}$)" }, { "scalars": [ { "value": "0.022" } ], "name": "Birefringence" }, { "scalars": [ { "value": "" } ], "name": "Symmetry" }, { "scalars": [ { "value": "2/m" } ], "name": "H-M symbol" }, { "scalars": [ { "value": "P2$_{1}$/a" } ], "name": "Space group" }, { "scalars": [ { "value": "" } ], "name": "Symmetry" }, { "scalars": [ { "value": "Monoclinic prismatic" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Reidite", "title": "Wikipedia: Reidite" } ], "names": [ "Reidite" ], "chemicalFormula": "ZrSiO$_{4}$", "properties": [ { "scalars": [ { "value": "Zircon Group" } ], "name": "Category" }, { "scalars": [ { "value": "183.31" } ], "units": "gm", "name": "Molecular weight" }, { "scalars": [ { "value": "09.AD.45" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "4.738" } ], "name": "Unit cell (a)" }, { "scalars": [ { "value": "10.506" } ], "name": "Unit cell (c)" }, { "scalars": [ { "value": "4" } ], "name": "Unit cell (Z)" }, { "scalars": [ { "value": "235.85 Den=5.16" } ], "name": "Unit cell (V)" }, { "scalars": [ { "value": "Colorless-white" } ], "name": "Color" }, { "scalars": [ { "value": "Epitaxial-Crystallographic alignment with a precursor mineral" } ], "name": "Crystal habit" }, { "scalars": [ { "value": "$\\alpha$-quartz: Tetragonal-DipyramidalH-M Symbol (4/m) Space Group: I 41/a" } ], "name": "Crystal system" }, { "scalars": [ { "value": "None" } ], "name": "Cleavage" }, { "scalars": [ { "value": "Irregular/Uneven" } ], "name": "Fracture" }, { "scalars": [ { "value": "Brittle" } ], "name": "Tenacity" }, { "scalars": [ { "value": "7.5" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Adamantine" } ], "name": "Luster" }, { "scalars": [ { "value": "None" } ], "name": "Pleochroism" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "5.16 gm/cc" } ], "name": "Specific gravity" }, { "scalars": [ { "value": "5.2" } ], "conditions": [ { "scalars": [ { "value": "g/cm$^{3}$" } ], "name": "Note" } ], "name": "Density" }, { "scalars": [ { "value": "Tetragonal" } ], "name": "Symmetry" } ] }, { "category": "system.chemical", "ids": [], "references": [ { "url": "https://en.wikipedia.org/wiki/Serendibite", "title": "Wikipedia: Serendibite" } ], "names": [ "Serendibite" ], "chemicalFormula": "(Ca,Na)$_{2}$(Mg,Fe$^{2+}$)$_{3}$(Al,Fe$^{3+}$)$_{3}$[O$_{2}$(Si,Al,B)$_{6}$O$_{18}$]", "properties": [ { "scalars": [ { "value": "Inosilicates" } ], "name": "Category" }, { "scalars": [ { "value": "9.DH.40" } ], "name": "Strunz classification" }, { "scalars": [ { "value": "69.2.1a.6" } ], "name": "Dana classification" }, { "scalars": [ { "value": "pale yellow, blue-green, greyish blue, black" } ], "name": "Color" }, { "scalars": [ { "value": "Polysynthetic on {0-11} is common" } ], "name": "Twinning" }, { "scalars": [ { "value": "None Observed" } ], "name": "Cleavage" }, { "scalars": [ { "value": "6.5-7" } ], "name": "Mohs scale hardness" }, { "scalars": [ { "value": "Vitreous" } ], "name": "Luster" }, { "scalars": [ { "value": "White" } ], "name": "Streak" }, { "scalars": [ { "value": "3.42-3.52" } ], "units": "g/cm$^{3}$", "conditions": [ { "scalars": [ { "value": "3.47 g/cm$^{3}$" } ], "name": "Note" } ], "name": "Density" }, { "scalars": [ { "value": "1.701-1.706" } ], "name": "Refractive index" }, { "scalars": [ { "value": "Visible,strong, color: green, blue, yellow, bluegreen, light yellow" } ], "name": "Pleochroism" } ] } ]