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, then isothermally ordered at 700 deg C for 57600 min
_database_code_amcsd 0002847
8.0850 8.0850 8.0850 90 90 90 *Fd3m
.125 .125 .125
atom      x      y      z  occ  Uiso
Mg     .125   .125   .125 .792 .0041
Al     .125   .125   .125 .208 .0041
Al       .5     .5     .5 .896 .0038
Mg       .5     .5     .5 .104 .0038
O    .26251 .26251 .26251      .0065