Spinel
Andreozzi G B, Princivalle F
American Mineralogist 87 (2002) 838-844
Kinetics of cation ordering in synthetic MgAl2O4 spinel
Sample: annealed at 1000 deg C for 12h
_database_code_amcsd 0002840
8.0832 8.0832 8.0832 90 90 90 *Fd3m
.125 .125 .125
atom      x      y      z  occ  Uiso
Mg     .125   .125   .125 .728 .0044
Al     .125   .125   .125 .272 .0044
Al       .5     .5     .5 .864 .0044
Mg       .5     .5     .5 .136 .0044
O    .26171 .26171 .26171      .0081