Forsterite
Smyth J R, Hazen R M
American Mineralogist 58 (1973) 588-593
The crystal structures of forsterite and hortonolite at several temperatures
up to 900 C
T = 300 C
Locality: synthetic
_database_code_amcsd 0000329
4.763 10.240 5.999 90 90 90 Pbnm
atom     x     y     z Biso
Mg1      0     0     0  .60
Mg2  .9915 .2780   1/4  .57
Si   .4257 .0939   1/4  .25
O1   .7657 .0910   1/4  .63
O2   .2177 .4492   1/4  .52
O3   .2806 .1619 .0347  .59