Monticellite
Brown G, West J
Zeitschrift fur Kristallographie 66 (1927) 154-161
The structure of monticellite (Mg Ca Si O4).
_cod_database_code 1011202
_database_code_amcsd 0018072
4.815 11.08 6.37 90 90 90 Pbnm
atom     x    y   z
Mg1      0    0   0
Ca1  -.017 .257 .25
Si1   .403 .086 .25
O1   -.236 .067 .25
O2    .264 .464 .25
O3     .25 .153 .03