AM_Diopside-ferrian_1 Formula: Ca Mg.857 Fe.267 Si1.876 O6 Name: Diopside-ferrian Unit cell: 9.7646 8.92 5.2709 90.0 105.889 90.0 , V=441.56 Space group: C12/C1 (15)

Redhammer G J , European Journal of Mineralogy , 10 (1998) p.439-452, Mossbauer spectroscopy and Rietveld refinement on synthetic, ferri-Tschermak s molecule CaFe3+(Fe3+Si)O6 substituted diopside, Sample: fts15/#2