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 = 1639 K on heating cycle, Mg.99Al2O4
_database_code_amcsd 0002179
8.18961 8.18961 8.18961 90 90 90 *Fd3m
.125 .125 .125
atom       x       y       z  occ  Biso
Mg      .125    .125    .125 .680 1.767
Al      .125    .125    .125 .320 1.767
Al        .5      .5      .5 .840 1.533
Mg        .5      .5      .5 .160 1.533
O    .259994 .259994 .259994      1.995