The Late Paleozoic porphyry–epithermal spectrum of the Birgilda–Tomino ore cluster in the South Urals, Russia

Trace-element geochemistry of molybdenite from porphyry Cu deposits of the Birgilda-Tomino ore cluster (South Urals, Russia)

“…Se correlation for analyses with <2500 ppm Re suggests that some Se may be incorporated in the molybdenite lattice. However, our previous mineralogical study of the Kalinovskoe ore (Plotinskaya et al ., 2014b) revealed up to 0.69 wt.% Se in matildite and 0.57 wt.% Se in tetradymite which, in addition to a positive Se–Bi correlation (Table 5), provides evidence that Se is mainly due to mineral inclusions in molybdenite.…”

“…(1998) and Plotinskaya et al . (2014 b , 2017 a , b ). The ore cluster is located within the East-Uralian Volcanic Terrane (the shaded area in the inset of Fig.…”

“…In the central zones of the diorite stocks, phyllic alteration accompanies chalcopyrite ± bornite ± molybdenite mineralization, while in the peripheral zone, propylitic alteration dominates with pyrite-chalcopyrite mineralization and occasional magnetite and hematite. The latest-stage mineralization, which occurs in the periphery of the Kalinovskoe deposit, includes various Bi-sulfosalts (bismuthinite–aikinite series, matildite), native gold, galena, sphalerite, tetrahedrite (Plotinskaya et al ., 2014 b ) with bornite, chalcopyrite and rare Au-Ag, Ag, Pb, Bi, and Hg tellurides. The oxidation zone is up to 40 m thick and contains malachite, azurite and chalcocite.…”

“…Grabezhev and Shagalov, 2010; Grabezhev and Gmyra, 2014; Grabezhev and Hiller, 2015; Grabezhev and Voudouris, 2015; Plotinskaya et al ., 2014 a , 2015). Among the numerous porphyry deposits and occurrences known in the Urals (Plotinskaya et al ., 2017 a , b ) the area of the Birgilda-Tomino ore cluster is one of the most interesting due to a remarkable variability of styles of mineralization (Plotinskaya et al ., 2014 b ) and it is economically promising because of the large Tomino porphyry copper deposit. The rhenium distribution in molybdenite from the Tomino deposit was described by Grabezhev and Hiller (2015).…”

Porphyry Deposits of the South Urals: Rhenium Distribution

“…1. Simplified tectonic scheme of the South Urals, and locations of porphyry and epithermal deposits and occurrences, modified after (Mineral deposits…, 2007;Puchkov, 2010;Plotinskaya et al, 2014). Geotectonic belts: WU -West Uralian; CU -Central Uralian; M -Magnitogorsk; EU -East Uralian, TU -East Uralian (Va -Valerianovka arc).…”