AM_Bechererite Formula: Zn6.938 Cu1.002 (Si S) H19 O21 Name: Bechererite Unit cell: 8.319 8.319 7.377 90.0 90.0 120.0 , V=442.13 Space group: P11-3 (1)

Giester G , Rieck B , American Mineralogist , 81 (1996) p.244-248, Bechererite, (Zn,Cu)6Zn2(OH)13[(S,Si)(O,OH)4]2, a novel mineral species from the, Tonopah-Belmont mine, Arizonia, Note: U(1,2) changed for Si, S, O1, OH1 to match symmetry constraints.