Forsterite
Hazen R M
American Mineralogist 61 (1976) 1280-1293
Effects of temperature and pressure on the crystal structure of forsterite
T = 350 C P = 1 atm
olivine
_database_code_amcsd 0000547
4.763 10.24 5.999 90 90 90 Pbnm
atom     x     y     z B(1,1) B(2,2) B(3,3)  B(1,2) B(1,3) B(2,3)
Si   .4257 .0939   .25  .0026  .0010  .0025   .0001      0      0
Mg1      0     0     0  .0075  .0021  .0029  -.0001 -.0005 -.0007
Mg2  .9915 .2780   .25  .0081  .0014  .0045  .00005      0      0
O1   .7657 .0910   .25  .0094  .0012  .0051   .0003      0      0
O2   .2178 .4492   .25  .0073  .0014  .0040  -.0001      0      0
O3   .2822 .1619 .0347  .0082  .0016  .0037  -.0003 -.0002 0.0006