The First Find of Silver Nuggets in Gold Placers of the Subpolar Urals
- Authors: Mayorova T.P.1,2, Kuznetsov S.K.1, Filippov V.N.1
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Affiliations:
- Yushkin Institute of Geology, Komi Science Center, Ural Branch, Russian Academy of Sciences
- Pitirim Sorokin Syktyvkar State University
- Issue: Vol 486, No 2 (2019)
- Pages: 716-718
- Section: Geochemistry
- URL: https://journals.rcsi.science/1028-334X/article/view/195153
- DOI: https://doi.org/10.1134/S1028334X19060308
- ID: 195153
Cite item
Abstract
In the gold placers of the Subpolar Urals, silver nuggets have been found for the first time. Galena, cassiterite, wolframite, cosalite, tetradymite, ferberite, cobaltine, tellurojoseite, and native bismuth are associated with silver. The silver is generally represented by subrounded and angular gray particles of up to 2–2.5 cm in size. The particles have a lumpy, slightly flattered, elongated shape. Sometimes, Au and Hg admixtures are detected in the composition of the silver. Inclusions of fine particles of gold and mineral phases of bismuth and tellurium are encountered. The results of studies show the widespread development of Au–Ag–Bi–Te mineralization, original occurrences of which are currently unknown. The relatively poor roundness of the silver nuggets and the presence of the coarse-grained gold, which is also poorly rounded, point to the proximity of the original sources to the gold-bearing placers.
About the authors
T. P. Mayorova
Yushkin Institute of Geology, Komi Science Center,Ural Branch, Russian Academy of Sciences; Pitirim Sorokin Syktyvkar State University
Author for correspondence.
Email: mayorova@geo.komisc.ru
Russian Federation, Syktyvkar, 167982; Syktyvkar, 167001
S. K. Kuznetsov
Yushkin Institute of Geology, Komi Science Center,Ural Branch, Russian Academy of Sciences
Email: mayorova@geo.komisc.ru
Russian Federation, Syktyvkar, 167982
V. N. Filippov
Yushkin Institute of Geology, Komi Science Center,Ural Branch, Russian Academy of Sciences
Email: mayorova@geo.komisc.ru
Russian Federation, Syktyvkar, 167982