AM_Pyroxene-ideal_89 Formula: Mg Ca Si2 O6 Name: Pyroxene-ideal Unit cell: 9.876 9.17 5.294 90.0 109.0 90.0 , V=453.32 Space group: C12/C1 (15)

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 diopside at 1000C after Cameron et al. (1973), with O3-O3-O3 angle = 168.5 and model oxygen radius = 1.330