Citation: Pervukhina, N. V.; Vasil'ev, V. I.; Magarill, S. A.; Borisov, S. V.; Naumov, D. Y. (2006). Crystal chemistry of mercury sulfohalides of composition Hg3S2Hal2 (Hal: Cl,Br). I. Crystal structures of two polymorphic modifications of Hg3S2Cl2-xBrx (x ~ 0.5) Sample: compound I. The Canadian Mineralogist, 44, pp. 1239-1246.