AM_Hercynite_19 Formula: Al1.999 Mg.955 Fe.046 O4 Name: Hercynite Unit cell: 8.0895 8.0895 8.0895 90.0 90.0 90.0 , V=529.38 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: He2f/e