Olivine 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: M251 _database_code_amcsd 0007974 4.7773 10.2800 5.9971 90 90 90 Pbnm atom x y z occ Biso CoM1 0 0 0 .888 .52 MgM1 0 0 0 .112 .52 CoM2 .9908 .2770 .25 .612 .41 MgM2 .9908 .2770 .25 .388 .41 Si .4279 .0945 .25 .34 O1 .7603 .0929 .25 .47 O2 .2124 .4506 .25 .47 O3 .2834 .1635 .0377 .51