[ Top ] [ Japanese ]

Akimotoite

• MgSiO₃
• (Mg,Fe)SiO₃
• [Mg²⁺][Si⁴⁺][O₃]^6-

• Class: Ilmenite group
• Class: Inosilicate (Single chain)

• Polymorph: Enstatite (Orthorhombic, Low pressure)
• Polymorph: Clinoenstatite (Monoclinic, Low pressure)

• Ca/(Mg+Fe+Ca) > 0.05: Pigeonite

• Mg => Fe: Ferrosilite (Series), Clinoferrosilite
• Mg => Mn: Kanoite, Donpeacorite

• Si => Ti: Geikielite

• Color: Colorless
• Luster: Vitreous
• Diaphaneity: Transparent

• System: Trigonal
• Group: (-3), R(-3)
• Lattice: a=4.8, c=13.6

Etymology: Professor Shun-ichi Akimoto (1925-2004), Japanese geophysicist of the University of Tokyo.