AM_Augite_1 Formula: Ca Mg.74 Fe.25 Si2 O6 Name: Augite Unit cell: 9.7504 8.9015 5.27444 90.0 106.016 90.0 , V=440.02 Space group: C12/C1 (15)

Gualtieri A F , Journal of Applied Crystallography , 33 (2000) p.267-278, Accuracy of XRPD QPA using the combined Rietveld-RIR method, Locality: Napoli, Italy