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 ISIS, Rutherford Appleton Laboratory, U.K. T = 773 K on heating cycle, MgAl2O4 _database_code_amcsd 0002147 8.11685 8.11685 8.11685 90 90 90 *Fd3m .125 .125 .125 atom x y z occ Biso Mg .125 .125 .125 .855 .960 Al .125 .125 .125 .145 .960 Al .5 .5 .5 .9275 .643 Mg .5 .5 .5 .0725 .643 O .261992 .261992 .261992 .958