Forsterite Artioli G, Rinaldi R, Wilson C C, Zanazzi P F American Mineralogist 80 (1995) 197-200 High-temperature Fe-Mg cation partitioning in olivine: In-situ single-crystal neutron diffraction study T = 880 C Atomic parameters obtained from the ICSD _database_code_amcsd 0001719 4.76 10.33 6.05 90 90 90 Pbnm atom x y z occ U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) Mg1 0 0 0 .868 .0303 .0229 .0197 .0022 -.0050 -.0023 Fe1 0 0 0 .132 .0303 .0229 .0197 .0022 -.0050 -.0023 Mg2 .9922 .2782 .25 .892 .0251 .0141 .0252 .0029 0 0 Fe2 .9922 .2782 .25 .108 .0251 .0141 .0252 .0029 0 0 Si .4266 .0944 .25 .0058 .0081 .0194 .0037 0 0 O1 .7671 .0913 .25 .0139 .0201 .0196 .0071 0 0 O2 .2203 .4504 .25 .0117 .0090 .0292 -.0024 0 0 O3 .2813 .1630 .0356 .0203 .0170 .0196 -.0019 -.0035 .0089