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: M504 _database_code_amcsd 0007984 4.7713 10.2536 5.9915 90 90 90 Pbnm atom x y z occ Biso CoM1 0 0 0 .668 .52 MgM1 0 0 0 .332 .52 CoM2 .9927 .2770 .25 .332 .41 MgM2 .9927 .2770 .25 .668 .41 Si .4290 .0917 .25 .34 O1 .7647 .0924 .25 .47 O2 .2196 .4513 .25 .47 O3 .2862 .1629 .0364 .51