AM_Forsterite_40 Formula: Si (Mg1.8 Fe.2) O4 Name: Forsterite Unit cell: 4.7644 10.237 5.9975 90.0 90.0 90.0 , V=292.52 Space group: PBNM (62)

Liang J , Hawthorne F C , The Canadian Mineralogist , 32 (1994) p.541-552, Characterization of fine-grained mixtures of rock-forming minerals by Rietveld, structure refinement: olivine + pyroxene, Sample: P6 Rietveld, 59.9% olivine