Forsterite Liang J, Hawthorne F C The Canadian Mineralogist 32 (1994) 541-552 Characterization of fine-grained mixtures of rock-forming minerals by Rietveld structure refinement: olivine + pyroxene Sample: P6 Rietveld, 59.9% olivine _database_code_amcsd 0005402 4.7644 10.2370 5.9975 90 90 90 Pbnm atom x y z occ Biso Si .427 .096 .25 .39 MgM1 0 0 0 .906 .40 FeM1 0 0 0 .094 .40 MgM2 .988 .277 .25 .894 .41 FeM2 .988 .277 .25 .106 .41 O1 .763 .091 .25 .50 O2 .216 .446 .25 .48 O3 .275 .162 .031 .52