AM_Protoenstatite_1 Formula: Mg Si O3 Name: Protoenstatite Unit cell: 9.306 8.886 5.36 90.0 90.0 90.0 , V=443.24 Space group: PBCN (60)

Yang H , Ghose S , Physics and Chemistry of Minerals , 22 (1995) p.300-310, High temperature single crystal X-ray diffraction studies, of the ortho-proto phase transition in enstatite, Mg2Si2O6 at 1360 K, Sample: T = 1360 K