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 900 deg C for 60 min _database_code_amcsd 0002829 8.0837 8.0837 8.0837 90 90 90 *Fd3m .125 .125 .125 atom x y z occ Uiso Mg .125 .125 .125 .745 .0038 Al .125 .125 .125 .255 .0038 Al .5 .5 .5 .872 .0038 Mg .5 .5 .5 .128 .0038 O .26192 .26192 .26192 .0074