AM_Fangite Formula: Tl3 As S4 Name: Fangite Unit cell: 8.894 10.855 9.079 90.0 90.0 90.0 , V=876.53 Space group: PNMA (62)

Wilson J R , Sen Gupta P K , Robinson P D , Criddle A J , American Mineralogist , 78 (1993) p.1096-1103, Fangite, Tl3AsS4, a new thallium arsenic sulfosalt from the Mercur Au deposit,, Utah, and revised optical data for gillulyite