AM_Hercynite Formula: Fe Al2 O4 Name: Hercynite Unit cell: 8.15579 8.15579 8.15579 90.0 90.0 90.0 , V=542.50 Space group: FD3M (227)

Hill R J , American Mineralogist , 69 (1984) p.937-942, X-ray powder diffraction profile refinement of synthetic hercynite, inversion parameter = .163