Spinel
Princivalle F, Martignago F, Nestola F, Dal Negro A
European Journal of Mineralogy 24 (2012) 633-643
Kinetics of cation ordering in synthetic Mg(Al,Fe3+)2O4 spinels
Note Sample F39, disordered at 1000 C for 24 h, then ordered at 650 C
Annealing time = 189 min
_database_code_amcsd 0019290
8.1465 8.1465 8.1465 90 90 90 *Fd3m
.125 .125 .125
atom       x      y      z  occ
AlM       .5     .5     .5 .725
MgM       .5     .5     .5 .176
Fe3+M     .5     .5     .5 .100
MgT     .125   .125   .125 .649
AlT     .125   .125   .125 .160
Fe3+T   .125   .125   .125 .191
O     .26108 .26108 .26108