AM_Hematite-proto_1 Formula: Fe1.9 H.06 O3 Name: Hematite-proto Unit cell: 5.0258 5.0258 13.709 90.0 90.0 120.0 , V=299.88 Space group: R-3C (167)

Gualtieri A , Venturelli P , American Mineralogist , 84 (1999) p.895-904, In situ study of the goethite-hematite phase transformation by real time, synchrotron powder diffraction, Sample at T = 517 C