Stolzite and Wulfenite in the Oxidation Zone of the Novoburannoe (Gumbeyskoe) Deposit (Southern Urals)
N. V. Sidorovaa, b, *, N. N. Korotaevab, E. M. Spiridonovb, and D. A. Khaninb, c
a Institute of Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry,
Russian Academy of Sciences, Moscow, 119017 Russia
b Faculty of Geology, Moscow State University, Moscow, 119991 Russia
c Institute of Experimental Mineralogy, Russian Academy of Sciences, Chernogolovka, 142432 Russia
Correspondence to: *e-mail: nsidorova989@mail.ru
Received 26 May, 2022
Abstract—New data are reported on composition and morphology of wulfenite—stolzite-range minerals in oxidized ores at the Novoburannoe (Gumbeyskoe) scheelite deposit in the Southern Urals (Russia). Supergene stolzite and W-bearing wulfenite occur as veinletlike complex-zoned aggregates along the cracks in Mo-bearing scheelite at the point of contact with calcite, dolomite, chalcopyrite, and tennantite. The mineral composition varies from Mo-bearing stolzite (Pb0.98Ca0.02)(W0.78Mo0.22)О4 and W-rich wulfenite (Pb0.93Sr0.05Ca0.02)(Mo0.59W0.41)О4 to pure wulfenite. W-bearing wulfenite is predominant in the studied samples. W-free wulfenite forms pseudomorphs after molybdenite inclusions in galena.
Keywords: stolzite, wulfenite, scheelite, oxidation zone, Gumbeyskoe deposit, Southern Urals
DOI: 10.1134/S1075701523080093