AM_Zinkenite Formula: Pb4.51 Sb10.5 S20.25 Name: Zinkenite Unit cell: 22.148 22.148 4.333 90.0 90.0 120.0 , V=1840.72 Space group: P63 (173)

Portheine J C , Nowacki W , Zeitschrift fur Kristallographie , 141 (1975) p.79-96, Refinement of the crystal structure of zinckenite, Pb6Sb14S27, Sample: Bolivar mine, Cerro Bonete, Bolivia