Monticellite
Sharp Z D, Hazen R M, Finger L W
American Mineralogist 72 (1987) 748-755
High-pressure crystal chemistry of monticellite, CaMgSiO4
Sample: P = 11.1 kbar, collected with 8-mm-diameter apertures
_database_code_amcsd 0001098
4.812 11.051 6.364 90 90 90 Pbnm
atom     x     y     z Biso
Mg1      0     0     0 1.13
Ca2  .9766 .2763   .25  .99
Si   .4099 .0812   .25  .82
O1   .7481 .0769   .25 1.22
O2   .2458 .4484   .25  .88
O3   .2741 .1465 .0444  .84