Fayalite
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
Note: variety hortonolite
T = 600 C
Locality: Franklin, New Jersey, USA
_database_code_amcsd 0000334
4.838 10.492 6.136 90 90 90 Pbnm
atom    x     y     z  occ Biso
Fe1     0     0     0 .583 2.37
Mg1     0     0     0 .338 2.37
Mn1     0     0     0 .079 2.37
Fe2  .994 .2799   1/4 .517 1.69
Mg2  .994 .2799   1/4 .412 1.69
Mn2  .994 .2799   1/4 .071 1.69
Si   .445 .0959   1/4      1.06
O1   .814 .0882   1/4      2.64
O2   .210 .4503   1/4       .89
O3   .280 .1615 .0447      1.84