Ringwoodite
Hazen R M, Downs R T, Finger L W
American Mineralogist 78 (1993) 1320-1323
Crystal chemistry of ferromagnesian silicate spinels: Evidence for Mg-Si
disorder
Sample: SUNY 1102
_database_code_amcsd 0001627
8.2059 8.2059 8.2059 90 90 90 *Fd3m
.125 .125 .125
atom     x     y     z  occ B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3)
Si    .125  .125  .125      .00157 .00157 .00157      0      0      0
Mg      .5    .5    .5 .218 .00208 .00208 .00208 .00002 .00002 .00002
Fe      .5    .5    .5 .782 .00208 .00208 .00208 .00002 .00002 .00002
O    .2418 .2418 .2418      .00212 .00212 .00212 .00037 .00037 .00037