Hercynite Larsson L, O'Neill H St C, Annersten H European Journal of Mineralogy 6 (1994) 39-51 Crystal chemistry of synthetic hercynite (FeAl2O4) from XRD structural refinements and Mossbauer spectroscopy Sample: T = 900 C, Sample BG2/2 _database_code_amcsd 0006524 8.1523 8.1523 8.1523 90 90 90 *Fd3m .125 .125 .125 atom x y z occ Biso Fe .125 .125 .125 .82 .54 Al .125 .125 .125 .180 .54 Fe .5 .5 .5 .09 .42 Al .5 .5 .5 .91 .42 O .2640 .2640 .2640 .95