AM_Diopside_17 Formula: Mg.91 Fe.1 Al.06 Ca.91 Na.05 Si1.97 O6 Name: Diopside Unit cell: 9.739 8.913 5.253 90.0 106.02 90.0 , V=438.27 Space group: C12/C1 (15)

Oberti R , Caporuscio F A , American Mineralogist , 76 (1991) p.1141-1152, Crystal chemistry of clinopyroxenes from mantle eclogites: A study of the key, role of the M2 site population by means of crystal-structure refinement, sample SRV 4, Di90Jd05, diopside - jadeite join