Monticellite
Lager G A, Meagher E P
American Mineralogist 63 (1978) 365-377
High-temperature structural study of six olivines
T = 335 deg C, sample is from Crestmore, California, USA
_database_code_amcsd 0000647
4.834 11.147 6.409 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  .0092  .0017  .0031 -.0005 -.0023 -.0001
Fe       0     0     0 .07  .0092  .0017  .0031 -.0005 -.0023 -.0001
Ca   .9764 .2774   .25      .0117  .0015  .0049  .0003      0      0
Si   .4091 .0817   .25      .0041  .0014  .0046  .0002      0      0
O1   .7434 .0776   .25      .0032  .0032  .0112 -.0008      0      0
O2   .2476 .4501   .25      .0117  .0014  .0075  .0010      0      0
O3   .2738 .1473 .0472      .0095  .0024  .0060  .0000  .0014  .0010