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 800 deg C for 20 min
_database_code_amcsd 0002835
8.0843 8.0843 8.0843 90 90 90 *Fd3m
.125 .125 .125
atom      x      y      z  occ  Uiso
Mg     .125   .125   .125 .755 .0042
Al     .125   .125   .125 .245 .0042
Al       .5     .5     .5 .878 .0038
Mg       .5     .5     .5 .122 .0038
O    .26205 .26205 .26205      .0073