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 = 823 K _database_code_amcsd 0002036 8.18021 8.18021 8.18021 90 90 90 *Fd3m .125 .125 .125 atom x y z occ Biso Fe .125 .125 .125 .875 1.365 Al .125 .125 .125 .125 1.365 Fe .5 .5 .5 .0625 .872 Al .5 .5 .5 .9375 .872 O .264279 .264279 .264279 1.332