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Ca-Mg-Fe‹P΃Oƒ‹[ƒv, Ca-Mg-FeƒpƒCƒƒLƒVƒ“ ƒOƒ‹[ƒv

Ca-Mg-Fe pyroxene group

[(Ca,Mg,Fe)][(Ca,Mg,Fe)][(SiO3)2]