AM_Diopside_27 Formula: Si1.982 Al.035 Cr.247 V.244 Mg.484 Fe.007 Mn.001 (Ca.51 Na.49) O6 Name: Diopside Unit cell: 9.6718 8.8412 5.267 90.0 106.483 90.0 , V=431.87 Space group: C12/C1 (15)

Secco L , Martignago F , Dal Negro A , Reznitskii L Z , Sklyarov E V , American Mineralogist , 87 (2002) p.709-714, Crystal chemistry of Cr-V-rich clinopyroxenes, Sample 5