Spinel Martignago F, Andreozzi G B, Dal Negro A American Mineralogist 91 (2006) 306-312 Thermodynamics and kinetics of cation ordering in natural and synthetic Mg(Al,Fe3+)2O4 spinels from in situ high-temperature X-ray diffraction Locality: synthetic Sample: MgFe20, T = 800 C _database_code_amcsd 0004027 8.1721 8.1721 8.1721 90 90 90 *Fd3m .125 .125 .125 atom x y z occ Uiso MgT .125 .125 .125 .700 .0145 AlT .125 .125 .125 .212 .0145 FeT .125 .125 .125 .089 .0145 AlM .5 .5 .5 .793 .0158 MgM .5 .5 .5 .151 .0158 FeM .5 .5 .5 .056 .0158 O .26143 .26143 .26143 .0189