AM_Polybasite
Formula: Ag31 Sb3.797 As.203 Cu S22
Name: Polybasite
Unit cell: 26.2625 15.1623 24.1061 90.0 90.045 90.0 , V=9599.04
Space group: C12/C1 (15)

Bindi L , Menchetti S , American Mineralogist , 94 (2009) p.151-155, Adding further complexity to the polybasite structure: The role of Ag in the, B layer of the -M2a2b2c polytype, Locality: Gowganda, Timiskaming District, Ontario, Canada