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 = 1492 K on cooling cycle, Mg.99Al2O4
_database_code_amcsd 0002184
8.17760 8.17760 8.17760 90 90 90 *Fd3m
.125 .125 .125
atom       x       y       z  occ  Biso
Mg      .125    .125    .125 .698 1.532
Al      .125    .125    .125 .302 1.532
Al        .5      .5      .5 .849 1.413
Mg        .5      .5      .5 .151 1.413
O    .260437 .260437 .260437      1.730