Diopside
Raudsepp M, Hawthorne F C, Turnock A C
American Mineralogist 75 (1990) 1274-1281
Crystal chemistry of synthetic pyroxenes on the join CaNiSi2O6-CaMgSi2O6
(diopside): A Rietveld refinement study
sample Ni25, CaNi.22Mg.78Si2O6
_database_code_amcsd 0001336
9.7393 8.9095 5.2418 90 105.850 90 C2/c
atom     x     y     z occ Biso
Ni1      0 .9072   .25 .22 0.37
Mg1      0 .9072   .25 .78 0.37
Ca2      0 .3000   .25     .635
Si   .2876 .0905 .2299     .349
O1   .1158 .0861 .1407     0.51
O2   .3633 .2488 .3218     0.65
O3   .3490 .0180 .9928     0.56