AM_Hercynite_28 Formula: (Al1.897 Fe1.103) O4 Name: Hercynite Unit cell: 8.1646 8.1646 8.1646 90.0 90.0 90.0 , V=544.26 Space group: FD3M (227)

Andreozzi G B , Lucchesi S , American Mineralogist , 87 (2002) p.1113-1120, Intersite distribution of Fe2+ and Mg in the spinel (sensu stricto) -, hercynite series by single-crystal X-ray diffraction, Sample: He100c/a