general/iron-ii-minerals
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Hapkeite
Silicide mineral
Bronzite
Pyroxene mineral variety
Chamosite
Iron-rich end member of the chlorite group
Hedenbergite
Iron-rich pyroxene mineral
Vivianite
Fe(II) phosphate mineral
Vauxite
Phosphate mineral
Astrophyllite
Hydrous potassium iron titanium silicate mineral
Aheylite
Phosphate mineral
Columbite
Mineral group
Sekaninaite
Mg, Fe, Al cyclosilicate mineral
Siderite
Mineral composed of iron(II) carbonate
Ilmenite
Titanium-iron(II) oxide mineral