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 800 deg C for 2 min _database_code_amcsd 0002832 8.0834 8.0834 8.0834 90 90 90 *Fd3m .125 .125 .125 atom x y z occ Uiso Mg .125 .125 .125 .733 .0043 Al .125 .125 .125 .267 .0043 Al .5 .5 .5 .866 .0041 Mg .5 .5 .5 .134 .0041 O .26178 .26178 .26178 .0078