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 = 25 C
Locality: synthetic
_database_code_amcsd 0000328
4.756 10.207 5.980 90 90 90 Pbnm
atom     x     y     z Biso
Mg1      0     0     0  .26
Mg2  .9915 .2774   1/4  .22
Si   .4262 .0940   1/4  .08
O1   .7657 .0913   1/4  .27
O2   .2215 .4474   1/4  .24
O3   .2777 .1628 .0331  .27