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 = 773 K _database_code_amcsd 0002035 8.17657 8.17657 8.17657 90 90 90 *Fd3m .125 .125 .125 atom x y z occ Biso Fe .125 .125 .125 .868 1.290 Al .125 .125 .125 .132 1.290 Fe .5 .5 .5 .066 .823 Al .5 .5 .5 .934 .823 O .264203 .264203 .264203 1.299