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 = 41.2 kbar
_database_code_amcsd 0001101
4.779 10.922 6.317 90 90 90 Pbnm
atom     x     y     z Biso
Mg       0     0     0  .95
Ca   .9746 .2761   .25 1.02
Si   .4102 .0807   .25  .93
O1   .7434 .0776   .25 1.32
O2   .2490 .4471   .25  .77
O3   .2737 .1476 .0474 1.02