AM_Diopside_38 Formula: Mg Ca Si2 O6 Name: Diopside Unit cell: 9.6341 8.7948 5.1926 90.0 105.421 90.0 , V=424.13 Space group: C12/C1 (15)

Thompson R M , Downs R T , American Mineralogist , 93 (2008) p.177-186, The crystal structure of diopside at pressure to 10 GPa, Locality: DeKalb, New York, Sample: P = 4.22 GPa