AM_Vasilyevite Formula: Hg20 (C.85 S.15) O8.55 I3 (Br1.64 Cl1.36) Name: Vasilyevite Unit cell: 9.344 10.653 18.265 93.262 90.548 115.422 , V=1638.25 Space group: P-1 (2)

Cooper M A , Hawthorne F C , The Canadian Mineralogist , 41 (2003) p.1173-1181, The crystal structure of vasilyevite, (Hg2)10O6I3(Br,Cl)3(CO3)