Gahnite O'Neill H St C, Dollase W A Physics and Chemistry of Minerals 20 (1994) 541-555 Crystal structures and cation distributions in simple spinels from powder XRD structural refinements: MgCr2O4, ZnCr2O4, Fe3O4 and the temperature dependence of the cation distribution in ZnAl2O4 Sample: 1000, UCLA (CuKalpha radiation) Locality: synthetic _database_code_amcsd 0007783 8.0867 8.0867 8.0867 90 90 90 *Fd-3m .125 .125 .125 atom x y z Biso ZnT .125 .125 .125 .27 AlM .5 .5 .5 .25 O .2639 .2639 .2639 .29