Noble мetal and polymetal mineralization of the Mesoproterozoic Spiridon-Ty peridotite–shonkinite massif in the Kola Peninsula
- 作者: Petrovskiy M.N.1
-
隶属关系:
- Federal Research Center “Kola Science Centre RAS”
- 期: 卷 CLIII, 编号 5 (2024)
- 页面: 55-76
- 栏目: МИНЕРАЛЫ И ПАРАГЕНЕЗИСЫ МИНЕРАЛОВ
- URL: https://bakhtiniada.ru/0869-6055/article/view/281289
- DOI: https://doi.org/10.31857/S0869605524050041
- EDN: https://elibrary.ru/PCIFOI
- ID: 281289
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This article presents the results of studies of noble metal and polymetal mineralization from the zone of late superimposed carbonatization in phlogopite peridotites of the Mesoproterozoic peridotite-shonkinite massif Spiridon-Ty. These rocks are characterized by high concentrations of noble metals (Au up to 0.51 ppm and Ag up to 18 ppm) and polymetals (Cu up to 1.55 wt %; Pb up to 0.17 wt %; Zn up to 0.15 wt %). It has been established that the ore mineralization is sulfide-sulfosalt with native Cu, Ag, and Au. Sulfides and sulfosalts are represented by bornite, chalcopyrite, covellite, galena, sphalerite, tennantite, and gersdorfite. It was determined that the primary noble metal and polymetal mineralization was formed under the following conditions: T ≈ 395—280 °C, lgfS2 ≈ 10–6.5—10–9.9 atm, lgfO2 ≈10–37 atm and pH of the hydrothermal solution ≈ 5.5—7.8. Covellite is an intermediate mineral in the oxidation of primary sulfide minerals and was formed at T ≈ 190—110 °C and lgfS2 ≈ 10–10—10–12 atm. Native copper is a late oxidation mineral of sulfide minerals and formed at T ≤ 110 °C and lgfS2 ≤ 10–31 atm. The results obtained allow us to consider the potassium alkaline-ultrabasic massifs of the Kola alkaline province as a possible source of noble metal and polymetal ores.
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作者简介
M. Petrovskiy
Federal Research Center “Kola Science Centre RAS”
编辑信件的主要联系方式.
Email: petrovsk2@rambler.ru
Geological Institute
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