Forsterite
Liang J, Hawthorne F C
The Canadian Mineralogist 32 (1994) 541-552
Characterization of fine-grained mixtures of rock-forming minerals by Rietveld
structure refinement: olivine + pyroxene
Sample: P2 Rietveld, 19.9% olivine
_database_code_amcsd 0005398
4.7659 10.2414 5.9983 90 90 90 Pbnm
atom    x    y    z  occ Biso
Si   .420 .096  .25       .39
MgM1    0    0    0 .854  .40
FeM1    0    0    0 .146  .40
MgM2 .990 .277  .25 .900  .41
FeM2 .990 .277  .25 .100  .41
O1   .766 .093  .25       .50
O2   .223 .443  .25       .48
O3   .264 .167 .023       .52