AM_Diopside_40 Formula: Mg Ca Si2 O6 Name: Diopside Unit cell: 9.5731 8.7197 5.158 90.0 105.203 90.0 , V=415.49 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 = 7.08 GPa