Hercynite Harrison R J, Redfern S A T, O'Neill H St C American Mineralogist 83 (1998) 1092-1099 The temperature dependence of the cation distribution in synthetic hercynite (FeAl2O4) from in-situ neutron structure refinements Sample at T = 923 K _database_code_amcsd 0002038 8.18781 8.18781 8.18781 90 90 90 *Fd3m .125 .125 .125 atom x y z occ Biso Fe .125 .125 .125 .878 1.538 Al .125 .125 .125 .122 1.538 Fe .5 .5 .5 .061 .967 Al .5 .5 .5 .939 .967 O .264311 .264311 .264311 1.441