Spinel Andreozzi G B, Princivalle F American Mineralogist 87 (2002) 838-844 Kinetics of cation ordering in synthetic MgAl2O4 spinel Sample: annealed at 1000 deg C for 12h, then isothermally ordered at 700 deg C for 120 min _database_code_amcsd 0002843 8.0840 8.0840 8.0840 90 90 90 *Fd3m .125 .125 .125 atom x y z occ Uiso Mg .125 .125 .125 .762 .0040 Al .125 .125 .125 .238 .0040 Al .5 .5 .5 .881 .0038 Mg .5 .5 .5 .119 .0038 O .26214 .26214 .26214 .0071