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 = 563 K on heating cycle, Mg.99Al2O4 _database_code_amcsd 0002163 8.10870 8.10870 8.10870 90 90 90 *Fd3m .125 .125 .125 atom x y z occ Biso Mg .125 .125 .125 .814 .506 Al .125 .125 .125 .186 .506 Al .5 .5 .5 .907 .502 Mg .5 .5 .5 .093 .502 O .261725 .261725 .261725 .671