Monticellite
Lager G A, Meagher E P
American Mineralogist 63 (1978) 365-377
High-temperature structural study of six olivines
T = 25 deg C, sample is from Crestmore, California, USA
Note: Si-y altered to reproduce reported bond lengths
_database_code_amcsd 0000646
4.825 11.111 6.383 90 90 90 Pbnm
atom     x     y     z occ B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3)
Mg       0     0     0 .93  .0024  .0006  .0022 -.0003 -.0007 -.0001
Fe       0     0     0 .07  .0024  .0006  .0022 -.0003 -.0007 -.0001
Ca   .9771 .2766   .25      .0058  .0009  .0011  .0001      0      0
Si   .4110 .0815   .25      .0024  .0007  .0018 -.0002      0      0
O1   .7460 .0768   .25      .0026  .0020  .0009 -.0005      0      0
O2   .2466 .4491   .25      .0027  .0004  .0071  .0006      0      0
O3   .2725 .1466 .0451      .0044  .0016  .0029  .0008 -.0008  .0002