AM_Richelsdorfite Formula: Ca2 Cu5 Sb As4 O28 Cl H18 Name: Richelsdorfite Unit cell: 14.079 14.203 13.47 90.0 101.05 90.0 , V=2643.58 Space group: C12/M1 (12)

Susse P , Tillmann B , Zeitschrift fur Kristallographie , 179 (1987) p.323-334, The crystal structure of the new mineral richelsdorfite,, Ca2Cu5Sb(Cl/(OH)6/(AsO4)4)*6H2O, Locality: Iba, near Richelsdorf, Hessen, Germany