AM_Brandtite Formula: (Ca1.9 Pb.1) Mn.88 Mg.1 Fe.01 As2 O10 H4 Name: Brandtite Unit cell: 5.877 12.957 5.675 90.0 108.0 90.0 , V=410.99 Space group: P121/C1 (14)

Herwig S , Hawthorne F C , The Canadian Mineralogist , 44 (2006) p.1181-1196, The topology of hydrogen bonding in brandtite, collinsite and fairfieldite, Locality: Harstig mine, Harstigen, Sweden