AM_Pyroxene-ideal_90 Formula: Mg Ca Si2 O6 Name: Pyroxene-ideal Unit cell: 9.76 9.071 5.237 90.0 108.7 90.0 , V=439.17 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 after Levien and Prewitt (1981), with O3-O3-O3 angle = 166.4 and model oxygen radius = 1.319