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: P4 - 39.7% olivine Rietveld _database_code_amcsd 0005389 9.7489 8.9184 5.2577 90 105.896 90 C2/c atom x y z occ Biso MgM1 0 .907 .25 .948 .38 FeM1 0 .907 .25 .052 .38 CaM2 0 .302 .25 .67 SiT .287 .093 .231 .961 .42 AlT .287 .093 .231 .039 .42 O1 .116 .090 .140 .56 O2 .364 .250 .319 .70 O3 .352 .021 .000 .62