AM_Diopside_12 Formula: Ni Ca Si2 O6 Name: Diopside Unit cell: 9.7359 8.8932 5.2284 90.0 105.83 90.0 , V=435.52 Space group: C12/C1 (15)

Raudsepp M , Hawthorne F C , Turnock A C , American Mineralogist , 75 (1990) p.1274-1281, Crystal chemistry of synthetic pyroxenes on the join CaNiSi2O6-CaMgSi2O6, (diopside): A Rietveld refinement study, sample Ni100, CaNiSi2O6