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: M502 _database_code_amcsd 0007982 4.7713 10.2533 5.9911 90 90 90 Pbnm atom x y z occ Biso CoM1 0 0 0 .666 .52 MgM1 0 0 0 .334 .52 CoM2 .9908 .2777 .25 .334 .41 MgM2 .9908 .2777 .25 .666 .41 Si .4284 .0950 .25 .34 O1 .7595 .0922 .25 .47 O2 .2126 .4521 .25 .47 O3 .2825 .1630 .0363 .51