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Ca-Mg-Fe pyroxene group

[(Ca,Mg,Fe)][(Ca,Mg,Fe)][(SiO₃)₂]

• Class: Pyroxene supergroup < Inosilicate subclass < Silicate class
• Class: Inosilicate
• System: Monoclinic, Orthorhombic

• [A][B]: Augite
• [A][B]: Pigeonite
• [ Fe ][A]: Hedenbergite
• [ Fe ][ Fe ]: Clinoferrosilite (Monoclinic)
• [ Fe ][ Fe ]: Ferrosilite (Orthorhombic)
• [ Mg ][A]: Diopside
• [ Mg ][ Mg ]: Clinoenstatite (Monoclinic)
• [ Mg ][ Mg ]: Enstatite (Orthorhombic)