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 4-mm-diameter apertures
_database_code_amcsd 0001097
4.812 11.051 6.364 90 90 90 Pbnm
atom     x     y     z Biso
Mg1      0     0     0 1.43
Ca2  .9770 .2764   .25 1.32
Si   .4122 .0811   .25 1.25
O1   .7462 .0775   .25 1.61
O2   .2472 .4478   .25 1.40
O3   .2714 .1479 .0455 1.34