AM_Dufrenoysite Formula: Pb2 As2 S5 Name: Dufrenoysite Unit cell: 7.9 25.74 8.37 90.0 90.35 90.0 , V=1701.97 Space group: P1211 (4)

Marumo F , Nowacki W , Zeitschrift fur Kristallographie , 124 (1967) p.409-419, The crystal structure of dufrenoysite, Pb16As16S40, Locality: Lengenbach, Binnatal, Switzerland