The spinel subgroup includes:
chromite:
Fe2+Cr2O4
coulsonite:
Fe2+V3+2O4
deltalumite:
(Al0.67☐0.33)Al2O4
franklinite:
ZnFe3+2O4
gahnite:
ZnAl2O4
galaxite:
Mn2+Al2O4
guite:
Co2+Co3+2O4
hausmannite:
Mn2+Mn3+2O4
hercynite:
Fe2+Al2O4
hetaerolite:
ZnMn3+2O4
jacobsite:
Mn2+Fe3+2O4
maghemite:
(Fe3+0.67☐0.33)Fe3+2O4
magnesiochromite:
MgCr2O4
magnesioferrite:
MgFe3+2O4
magnetite:
Fe2+Fe3+2O4
manganochromite:
Mn2+Cr2O4
spinel:
MgAl2O4
trevorite:
NiFe3+2O4
zincochromite:
ZnCr2O4
The spinel subgroup is a member of the oxyspinel group.
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