AM_Pyroxene-ideal_120 Formula: Mg Si O3 Name: Pyroxene-ideal Unit cell: 9.725 8.872 5.122 90.0 108.9 90.0 , V=418.10 Space group: P121/C1 (14)

Thompson R M , Downs R T , American Mineralogist , 89 (2004) p.614-628, Model pyroxenes II: Structural variation as a function of tetrahedral rotation, model low clinoenstatite after Pannhorst (1984) with, O3A-O3A-O3A angle = 202.8, O3B-O3B-O3B angle = 138.1, and model oxygen radius = 1.306