AM_Diopside_42 Formula: Mg Ca Si2 O6 Name: Diopside Unit cell: 9.5391 8.6752 5.1385 90.0 105.106 90.0 , V=410.54 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 = 8.88 GPa