Citation: Siidra, O. I.; Vergasova, L. P.; Kretser, Y. L.; Polekhovsky, Y. S.; Filatov, S. K.; Krivovichev, S. V. (2014). Unique thallium mineralization in the fumaroles of the Tolbachik volcano, Kamchatka Peninsula, Russia. II. Karpovite Tl2VO(SO4)2(H2O). Mineralogical Magazine, 78, pp. 1699-1709.