Spinel Carbonin S, Martignago F, Menegazzo G, Dal Negro A Physics and Chemistry of Minerals 29 (2002) 503-514 X-ray single-crystal study of spinels: in situ heating Sample: NAT, Cooling, T = 500 C _database_code_amcsd 0008679 8.1271 8.1271 8.1271 90 90 90 *Fd3m .125 .125 .125 atom x y z occ Uiso AlT .125 .125 .125 .215 .0116 MgT .125 .125 .125 .781 .0116 ZnT .125 .125 .125 .004 .0116 AlM .5 .5 .5 .861 .0097 MgM .5 .5 .5 .1075 .0097 CrM .5 .5 .5 .0305 .0097 FeM .5 .5 .5 .001 .0097 O .26230 .26230 .26230 .0123