Iron
Natural Minerals
Allanite (Ce)
CaCe(Al2Fe2)(Si2O7)(SiO4)O(OH)
Almandine Garnet
Fe3Al2Si3O12
Ankerite
Ca(Fe, Mg, Mn)(CO3)2
Antigorite
(Mg,Fe,Al)3Si2O5(OH)4
Augite
(Ca, Mg, Fe)2 (SiAl)2O6
Biotite
K(Mg,Fe)3AlSi3O10 (OH)2
Chlorite (Chamosite)
(Fe,Mg,Fe)5Al(Si3Al)O10(OH,O)8
Chrome Diopside
((Ca,Na,Mg,Fe,Cr)2(Si,Al)2O6)
Epidote
(Ca2)(Al2Fe3)(O,OH,SiO4,Si2O7)
Ferroaxinite
Ca2FeAl2BO3Si4O12(OH)
Hornblende
Ca2(Mg, Fe, Al)5(Al,Si)8O22(OH)2
Obsidian (Lipari)
70-75 SiO2,MgO,Fe3O4
Peridot (Forsterite)
(Mg,Fe)2SiO4
Pyrrhotite
Fe(1-x)S (x 0 to 0.2)
Stilpnomelane
(K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36nH2O
Sturmanite
Ca6(Fe,Al,Mn)2(SO4)2B(OH)4(OH)1225(H2O)
Vermiculite
(Mg,Fe2,Al)3(Al,Si)4O10(OH)24(H2O)
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