AM_Diopside_25 Formula: Mg.955 Fe.059 Al.029 Cr.071 Ca.798 K.073 Na.023 Si1.992 O6 Name: Diopside Unit cell: 9.7476 8.9478 5.2622 90.0 106.056 90.0 , V=441.06 Space group: C12/C1 (15)

Harlow G E , American Mineralogist , 81 (1996) p.632-638, Structure refinement of a natural K-rich diopside: The effect of K on the, average structure