MineralDB

Comprehensive mineral database with 137 minerals. Properties, crystal systems, hardness, and occurrence data.

Carbonates

Calcite

CaCO3

H: 3SG: 2.71Trigonal

Malachite

Cu2CO3(OH)2

H: 4SG: 4.03Monoclinic

Azurite

Cu3(CO3)2(OH)2

H: 3.5SG: 3.77Monoclinic

Dolomite

CaMg(CO3)2

H: 3.5SG: 2.85Trigonal

Siderite

FeCO3

H: 4.5SG: 3.96Trigonal

Rhodochrosite

MnCO3

H: 4SG: 3.7Trigonal

Halides

Halite

NaCl

H: 2.5SG: 2.17Cubic

Fluorite

CaF2

H: 4SG: 3.18Cubic

Sylvite

KCl

H: 2SG: 1.99Cubic

Atacamite

Cu2Cl(OH)3

H: 3.5SG: 3.75Orthorhombic

Mineraloids

Opal

SiO2·nH2O

H: 6SG: 2.1Amorphous

Obsidian

Volcanic glass (SiO2 rich)

H: 5.5SG: 2.4Amorphous

Moldavite

SiO2 (+ Al2O3, etc.)

H: 5.5SG: 2.4Amorphous

Amber

C10H16O + succinic acid

H: 2.5SG: 1.1Amorphous

Jet

Carbon (lignite)

H: 3SG: 1.3Amorphous

Tektite

SiO2 rich natural glass

H: 5.5SG: 2.4Amorphous

View all 7 Mineraloids →

Native Elements

Diamond

C

H: 10SG: 3.52Cubic

Graphite

C

H: 1.5SG: 2.23Hexagonal

Copper

Cu

H: 3SG: 8.96Cubic

Gold

Au

H: 2.5SG: 19.3Cubic

Silver

Ag

H: 2.5SG: 10.5Cubic

Sulfur

S

H: 2SG: 2.07Orthorhombic

View all 7 Native Elements →

Organic

Pearl

CaCO3 (aragonite) + conchiolin

H: 2.5SG: 2.7Orthorhombic (aragonite)

Coral

CaCO3 (calcite/aragonite)

H: 3.5SG: 2.7Trigonal/Orthorhombic

Ivory

Ca5(PO4)3(OH) + collagen

H: 2.5SG: 1.8Hexagonal

Oxides

Corundum

Al2O3

H: 9SG: 4.02Trigonal

Magnetite

Fe3O4

H: 6SG: 5.17Cubic

Hematite

Fe2O3

H: 6.5SG: 5.26Trigonal

Magnetite

Fe3O4

H: 6SG: 5.17Cubic

Bauxite

Al(OH)3 + AlO(OH) (mixture)

H: 1.5SG: 2.5Various

Rutile

TiO2

H: 6.5SG: 4.23Tetragonal

View all 16 Oxides →

Phosphates

Turquoise

CuAl6(PO4)4(OH)8·4H2O

H: 6SG: 2.7Triclinic

Apatite

Ca5(PO4)3(F,Cl,OH)

H: 5SG: 3.2Hexagonal

Amblygonite

LiAlPO4(F,OH)

H: 6SG: 3.1Triclinic

Wavellite

Al3(PO4)2(OH)3·5H2O

H: 3.5SG: 2.33Orthorhombic

Variscite

AlPO4·2H2O

H: 4.5SG: 2.58Orthorhombic

Autunite

Ca(UO2)2(PO4)2·10-12H2O

H: 2.5SG: 3.1Tetragonal

View all 8 Phosphates →

Silicates

Quartz

SiO2

H: 7SG: 2.65Trigonal

Feldspar

KAlSi3O8 - NaAlSi3O8 - CaAl2Si2O8

H: 6SG: 2.56Triclinic/Monoclinic

Mica

KAl2(AlSi3O10)(OH)2

H: 2.5SG: 2.8Monoclinic

Topaz

Al2SiO4(F,OH)2

H: 8SG: 3.53Orthorhombic

Tourmaline

Na(Li,Al)3Al6(BO3)3Si6O18(OH)4

H: 7.5SG: 3.06Trigonal

Garnet

Fe3Al2(SiO4)3 (varies)

H: 7SG: 4.32Cubic

View all 54 Silicates →

Sulfates

Gypsum

CaSO4·2H2O

H: 2SG: 2.32Monoclinic

Barite

BaSO4

H: 3.5SG: 4.5Orthorhombic

Anhydrite

CaSO4

H: 3.5SG: 2.97Orthorhombic

Epsomite

MgSO4·7H2O

H: 2SG: 1.68Orthorhombic

Celestine

SrSO4

H: 3.5SG: 3.97Orthorhombic

Anglesite

PbSO4

H: 3SG: 6.38Orthorhombic

View all 7 Sulfates →

Sulfides

Pyrite

FeS2

H: 6.5SG: 5.01Cubic

Galena

PbS

H: 2.5SG: 7.58Cubic

Sphalerite

ZnS

H: 3.5SG: 4.09Cubic

Chalcopyrite

CuFeS2

H: 3.5SG: 4.28Tetragonal

Cinnabar

HgS

H: 2.5SG: 8.1Trigonal

Molybdenite

MoS2

H: 1.5SG: 4.73Hexagonal

View all 23 Sulfides →

Tungstates

Wolframite

(Fe,Mn)WO4

H: 5SG: 7.5Monoclinic

Scheelite

CaWO4

H: 4.5SG: 6.1Tetragonal