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 = 200 C _database_code_amcsd 0004019 8.1256 8.1256 8.1256 90 90 90 *Fd3m .125 .125 .125 atom x y z occ Uiso MgT .125 .125 .125 .719 .0063 AlT .125 .125 .125 .183 .0063 FeT .125 .125 .125 .098 .0063 AlM .5 .5 .5 .8095 .0076 MgM .5 .5 .5 .1395 .0076 FeM .5 .5 .5 .0505 .0076 O .26177 .26177 .26177 .0098