Forsterite
Artioli G, Rinaldi R, Wilson C C, Zanazzi P F
American Mineralogist 80 (1995) 197-200
High-temperature Fe-Mg cation partitioning in olivine: In-situ single-crystal
neutron diffraction study
T = room temperature
Atomic parameters obtained from the ICSD
_database_code_amcsd 0001718
4.740 10.230 5.960 90 90 90 Pbnm
atom     x     y     z  occ U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3)
Mg1      0     0     0 .879  .0053  .0049  .0058 -.0012 -.0004 -.0005
Fe1      0     0     0 .121  .0053  .0049  .0058 -.0012 -.0004 -.0005
Mg2  .9897 .2788   .25 .881  .0073  .0049  .0060  .0006      0      0
Fe2  .9897 .2788   .25 .119  .0073  .0049  .0060  .0006      0      0
Si   .4275 .0937   .25       .0039  .0017  .0039  .0011      0      0
O1   .7666 .0909   .25       .0050  .0072  .0060  .0007      0      0
O2   .2207 .4487   .25       .0069  .0018  .0071  .0002      0      0
O3   .2788 .1637 .0337       .0068  .0058  .0062  .0002  .0002  .0010