AM_Forsterite
Formula: (Mg1.8 Fe.2) Si O4
Name: Forsterite
Unit cell: 4.762 10.225 5.994 90.0 90.0 90.0 , V=291.86
Space group: PBNM (62)

Birle J D , Gibbs G V , Moore P B , Smith J V , American Mineralogist , 53 (1968) p.807-824, Crystal structures of natural olivines