AM_Trechmannite Formula: Ag As S2 Name: Trechmannite Unit cell: 13.98 13.98 9.12 90.0 90.0 120.0 , V=1543.62 Space group: R11-3 (1)

Matsumoto T , Nowacki W , Zeitschrift fur Kristallographie , 129 (1969) p.163-177, The crystal structure of trechmannite, AgAsS2, Locality: Lengenbach quarry, Binnatal, Canton Wallis, Switzerland