Ferrous chloride tetrahydrate, Rokühnite, FeCl2·4H2O
Ferrous nitrate hexahydrate, Fe(NO3)2·6H2O
Ferrous oxalate dihydrate, Humboldtine, FeC2O4·2H2O
Vivianite, Ferrous phosphate octahydrate, Fe3(PO4)2·8H2O
Ferrous sulfate heptahydrate, Melanterite, FeSO4·7H2O
Ferrous sulfide, Troilite, FeS
Ferrous oxide, Wüstite, FeO
Ferrous silicate, Ferrosilite, FeSiO3