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: P3 Rietveld, 30.6% olivine
_database_code_amcsd 0005399
4.7654 10.2396 5.9984 90 90 90 Pbnm
atom    x    y    z  occ Biso
Si   .427 .095  .25       .39
MgM1    0    0    0 .872  .40
FeM1    0    0    0 .128  .40
MgM2 .990 .278  .25 .900  .41
FeM2 .990 .278  .25 .100  .41
O1   .769 .095  .25       .50
O2   .207 .445  .25       .48
O3   .276 .164 .030       .52