AM_Schmiederite Formula: Pb2 Cu2 Se2 O11 H4 Name: Schmiederite Unit cell: 9.922 5.712 9.396 90.0 101.96 90.0 , V=520.95 Space group: P121/M1 (11)

Effenberger H , Mineralogy and Petrology , 36 (1987) p.3-12, Crystal structure and chemical formula of schmiederite, Pb2Cu2(OH)4(SeO3)(SeO4),, with a comparison to linarite PbCu(OH)2(SO4), Locality: synthetic