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 10 min _database_code_amcsd 0002841 8.0831 8.0831 8.0831 90 90 90 *Fd3m .125 .125 .125 atom x y z occ Uiso Mg .125 .125 .125 .729 .0044 Al .125 .125 .125 .271 .0044 Al .5 .5 .5 .864 .0044 Mg .5 .5 .5 .136 .0044 O .26173 .26173 .26173 .0081