Monticellite
Lager G A, Meagher E P
American Mineralogist 63 (1978) 365-377
High-temperature structural study of six olivines
T = 615 deg C, sample is from Crestmore, California, USA
_database_code_amcsd 0000648
4.848 11.176 6.436 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  .0157  .0033  .0067 -.0012 -.0028  .0001
Fe       0     0     0 .07  .0157  .0033  .0067 -.0012 -.0028  .0001
Ca   .9759 .2781   .25      .0175  .0024  .0088  .0007      0      0
Si   .4087 .0824   .25      .0083  .0022  .0083 -.0002      0      0
O1   .7428 .0785   .25      .0088  .0049  .0163 -.0006      0      0
O2   .2463 .4509   .25      .0149  .0023  .0112  .0011      0      0
O3   .2731 .1476 .0472      .0175  .0033  .0096  .0002 -.0001  .0011