Spinel
Meducin F, Redfern S A T, Le Godec Y, Stone H J, Tucker M G, Dove M T, Marshall W G
American Mineralogist 89 (2004) 981-986
Study of cation order-disorder in MgAl2O4 spinel by in situ neutron
diffraction up to 1600 K and 3.2 GPa
Sample at T = 1507 K and P = 3.2 GPa, inversion parameter x = .633
_database_code_amcsd 0003575
8.1452 8.1452 8.1452 90 90 90 *Fd3m
.125 .125 .125
atom       x      y      z   occ  Uiso
MgT     .125   .125   .125  .367 .0231
AlT     .125   .125   .125  .633 .0231
AlOct     .5     .5     .5 .6835 .0440
MgOct     .5     .5     .5 .3165 .0440
O     .26199 .26199 .26199       .0156