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 = 1278 K on cooling cycle, MgAl2O4 _database_code_amcsd 0002130 8.15030 8.15030 8.15030 90 90 90 *Fd3m .125 .125 .125 atom x y z occ Biso Mg .125 .125 .125 .786 1.55 Al .125 .125 .125 .214 1.55 Al .5 .5 .5 .893 1.107 Mg .5 .5 .5 .107 1.107 O .26089 .26089 .26089 1.447