AM_Gillulyite Formula: Tl As3.89 Sb.11 S6.5 Name: Gillulyite Unit cell: 9.584 5.679 21.501 90.0 100.07 90.0 , V=1152.22 Space group: P12/N1 (13)

Foit F F , Robinson P D , Wilson J R , American Mineralogist , 80 (1995) p.394-399, The crystal structure of gillulyite, Tl2(As,Sb)8S13, from the Mercur gold, deposit, Tooele County, Utah, U.S.A