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 = 381 K and P = 0.5 GPa, inversion parameter x = .365
_database_code_amcsd 0003578
8.0800 8.0800 8.0800 90 90 90 *Fd3m
.125 .125 .125
atom       x      y      z   occ  Uiso
MgT     .125   .125   .125  .635 .0043
AlT     .125   .125   .125  .365 .0043
AlOct     .5     .5     .5 .8175 .0116
MgOct     .5     .5     .5 .1825 .0116
O     .26136 .26136 .26136       .0059