Spinel
Redfern S A T, Harrison R J, O'Neill H St C, Wood D R R
American Mineralogist 84 (1999) 299-310
Thermodynamics and kinetics of cation ordering in MgAl2O4 spinel up to 1600 C
from in situ neutron diffraction
Data collected at IPNS, Argonne National Laboratory,
T = 1671 K on cooling cycle, Mg.99Al2O4
_database_code_amcsd 0002181
8.19336 8.19336 8.19336 90 90 90 *Fd3m
.125 .125 .125
atom       x       y       z   occ  Biso
Mg      .125    .125    .125  .677 1.805
Al      .125    .125    .125  .323 1.805
Al        .5      .5      .5 .8385 1.564
Mg        .5      .5      .5 .1615 1.564
O    .259992 .259992 .259992       2.014