Diopside 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: P3 - 30.6% olivine Rietveld _database_code_amcsd 0005388 9.7489 8.9181 5.2574 90 105.888 90 C2/c atom x y z occ Biso MgM1 0 .908 .25 .982 .38 FeM1 0 .908 .25 .018 .38 CaM2 0 .302 .25 .67 SiT .287 .093 .231 .961 .42 AlT .287 .093 .231 .039 .42 O1 .114 .089 .135 .56 O2 .365 .250 .318 .70 O3 .350 .020 .998 .62