Forsterite
Hazen R M
American Mineralogist 61 (1976) 1280-1293
Effects of temperature and pressure on the crystal structure of forsterite
T = 23 C, P = 1 atm
olivine
_database_code_amcsd 0000546
4.752 10.193 5.977 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   .4262 .0940   .25  .0008 .00043  .0008 .00005      0      0
Mg1      0     0     0  .0024 .00102  .0010 .00010 -.0003 -.0003
Mg2  .9915 .2774   .25  .0022 .00060  .0016      0      0      0
O1   .7657 .0913   .25  .0009 .00090  .0023 .00020      0      0
O2   .2215 .4474   .25  .0024 .00070  .0022 .00010      0      0
O3   .2777 .1628 .0331  .0022 .00093  .0016 .00010 -.0003  .0004