AM_Diopside_14 Formula: (Ni.45 Mg.55) Ca Si2 O6 Name: Diopside Unit cell: 9.739 8.9094 5.2375 90.0 105.848 90.0 , V=437.18 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 Ni50, CaNi.45Mg.55Si2O6