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 = 1622 K on cooling cycle, Mg.99Al2O4 _database_code_amcsd 0002182 8.18850 8.18850 8.18850 90 90 90 *Fd3m .125 .125 .125 atom x y z occ Biso Mg .125 .125 .125 .707 1.915 Al .125 .125 .125 .293 1.915 Al .5 .5 .5 .8535 1.454 Mg .5 .5 .5 .1465 1.454 O .260242 .260242 .260242 1.936