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Strunz Classification System

IV  -  Oxides

Mineral Formula Classification
A  -  Oxides with Me:O = 1:1 and 2:1 (M2O,MO)
Series 1  -  Ice
Ice H2 IV / A.1-10
B  -  Oxides with Me:O = 3:4 (spinel type M3O4 and related)
Series 1  -  Spinel group, spinel - gahnite series
Hercynite Fe2+Al2O4  IV / B.1-16
Series 2  -  Spinel group, magnesioferrite - franklinite series
Magnetite Fe2+Fe23+O4  IV / B.2-16
C  -  Oxides with Me:O = 2:3 (M2O3 and related compounds)
Series 4  -  Hematite group
Corundum Al2O3  IV / C.4-10
Hematite Fe2O3  IV / C.4-16
Series 5  -  Ilmenite group, geikilite - brizziite series
Ilmenite Fe2+TiO3  IV / C.5-16
Pyrophanite MnTiO3  IV / C.5-30
Series 9  -  Crichtonite group
Senaite PbMnFe23+(Ti,Fe3+)18O38  IV / C.9-60
Series 10  -  Perovskite series
Loparite-(Ce) (Ce,Na,Ca)2(Ti,Nb)2O6  IV / C.10-50
Lueshite NaNbO3  IV / C.10-60
Series 17  -  Pyrochlore group, pyrochlore series with Nb > Ti
Pyrochlore (Na,Ca)2Nb2O6(OH,F)  IV / C.17-16
D  -  Oxides with Me:O = 2:3 (M2O3 and related compounds)
Series 1  -  Quartz group
Quartz SiO2  IV / D.1-10
Opal SiO2 · n H2 IV / D.1-80
Series 2  -  Rutile group, rutile - cassiterite - plattnerite series
Rutile TiO2  IV / D.2-10
Series 3  -  Rutile group, ilmenorutile - Struverite series
Ilmenorutile (Ti,Nb,Fe3+)3O6  IV / D.3-10
Series 6  -  Tapiolite group
Franconite Na2Nb4O11 · 9H2 IV / D.6-40
Hochelagaite (Ca,Na,Sr)Nb4O11 · 8H2 IV / D.6-50
Series 8  -  Cryptomelane group
Cryptomelane K(Mn4+,Mn2+)8O16  IV / D.8-20
Series 12  -  Rancieite - takanelite series
Ranciéite (Ca,Mn)Mn44+O9 · 3 H2 IV / D.12-10
Series 14  -  Anatase - downeyite series
Anatase TiO2  IV / D.14-10
Series 15  -  Brookite - kuranakhite series
Brookite TiO2  IV / D.15-10
Series 18  -  Columbite series
Manganocolumbite (Mn,Fe++)(Nb,Ta)2O6 IV / D.18-20
Ferrocolumbite Fe2+Nb2O6  IV / D.18-30
F  -  Hydroxides and oxidic hydrates
Series 1  -  Sassolite - clinobehoite series
Behoite Be(OH)2  IV / F.1-16
Series 2  -  Gibbsite - doyleite series
Gibbsite Al(OH)3  IV / F.2-10
Nordstrandite Al(OH)3  IV / F.2-30
Doyleite Al(OH)3  IV / F.2-40
Series 3  -  Brucite series
Spertiniite Cu(OH)2  IV / F.3-90
Series 6  -  Diaspore - goethite - faitknechtite series
Goethite alpha-Fe3+O(OH)  IV / F.6-30
Lepidocrocite gamma-Fe3+O(OH)  IV / F.6-40
Series 11  -  Cyanophillite - cualstibite series
Birnessite Na4Mn14O27 · 9H2 IV / F.11-30


Strunz Classification System
I - II - III - IV - V - VI - VII - VIII/A - VIII/B - VIII/C -
VIII/D - VIII/E - VIII/F - VIII/G - VIII/H - VIII/J - SW