AM_Ankerite_6 Formula: Ca1.05 Fe.63 Mg.27 Mn.05 C2 O6 Name: Ankerite Unit cell: 4.83 4.83 16.167 90.0 90.0 120.0 , V=326.63 Space group: R11-3 (1)

Beran A , Zemann J , Tschermaks Mineralogische und Petrographische Mitteilungen , 24 (1977) p.279-286, Refinement and comparison of the crystal structures of a dolomite and of an Fe-rich ankerite, Locality: Erzberg, Etage Dreikonig, Styria, Austria