Forsterite Muller-Sommer M, Hock R, Kirfel A Physics and Chemistry of Minerals 24 (1997) 17-23 Rietveld refinement study of the cation distribution in (Co, Mg)-olivine solid solution Sample: MR100 _database_code_amcsd 0007980 4.7536 10.2066 5.9845 90 90 90 Pbnm atom x y z Biso MgM1 0 0 0 .52 MgM2 .9921 .2776 .25 .41 Si .4266 .0934 .25 .34 O1 .7612 .0932 .25 .47 O2 .2177 .4509 .25 .47 O3 .2800 .1627 .0376 .51