AM_Simonite Formula: Tl Hg As3 S6 Name: Simonite Unit cell: 5.948 11.404 15.979 90.0 90.15 90.0 , V=1083.87 Space group: P121/N1 (14)

Engel P , Nowacki W , Balic-Zunic T , Scavnicar S , Zeitschrift fur Kristallographie , 161 (1982) p.159-166, The crystal structure of simonite, TlHgAs3S6