AM_Diopside_36 Formula: Mg Ca Si2 O6 Name: Diopside Unit cell: 9.7397 8.9174 5.2503 90.0 105.866 90.0 , V=438.63 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 = 1 atm