Oxides

16 minerals in this group.

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

Ilmenite

FeTiO3

H: 6SG: 4.72Trigonal

Cassiterite

SnO2

H: 7SG: 7.04Tetragonal

Chromite

FeCr2O4

H: 5.5SG: 4.54Cubic

Uraninite

UO2

H: 6SG: 10.97Cubic

Cuprite

Cu2O

H: 3.5SG: 6.14Cubic

Zincite

ZnO

H: 4SG: 5.68Hexagonal

Goethite

FeO(OH)

H: 5.5SG: 4.27Orthorhombic

Limonite

FeO(OH)·nH2O (mixture)

H: 5.5SG: 3.6Amorphous

Bauxite mineral

Al(OH)3

H: 3SG: 2.44Monoclinic

Spinel

MgAl2O4

H: 8SG: 3.58Cubic