Forecasting criteria for sulphide PGE-copper-nickel deposits of the Noril’sk province (In English)
| العنوان: | Forecasting criteria for sulphide PGE-copper-nickel deposits of the Noril’sk province (In English) |
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| المؤلفون: | K. N. Malitch |
| المصدر: | LITHOSPHERE (Russia). 21:660-682 |
| بيانات النشر: | IGG UB RAS, 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Nickel, Geophysics, chemistry, Geochemistry and Petrology, Stratigraphy, Metallurgy, chemistry.chemical_element, Geology, Copper |
| الوصف: | Research subject. World-class sulphide platinum-group-element (PGE)-Cu-Ni deposits occur within the Noril’sk-Talnakh region of northern Siberia, Russia. The signifcance of these deposits presents opportunities to determine the most effective approaches for the search of similar deposits using commercial PGE-Cu-Ni deposit examples. Materials and methods. Petrological and geochemical analysis of the ultramafc-mafc intrusions of the Noril’sk province ranks them into three types in terms of sulphide mineralization style and economic signifcance: 1) economic intrusions containing unique and large sulphide PGE-Cu-Ni deposits (Oktyabr’sk, Talnakh and Noril’sk-1); 2) subeconomic intrusions that contain small- to medium-sized Cu-Ni sulphide deposits, and medium-sized to large PGE deposits (Chernogorsk, Zub-Marksheider, Vologochan, etc.); 3) uneconomic intrusions that contain low-grade disseminated Cu-Ni ores with ≈0.2 wt % of Cu and Ni, and low Cr and PGE (Nizhny Talnakh, Zelyonaya Griva, etc.). Results and conclusions. Principal sources used in exploration for rich sulphide PGE-Cu-Ni ores include structural, magmatic, stratigraphic-lithological, geochemical, mineralogical, metamorphic and some others. Based on an analysis of isotope-geochemical data, new indicators for locating sulphide PGE-Cu-Ni mineralization are suggested. A restricted range of S-isotope values, and a negative trend for coupled S-Cu isotope compositions can be employed as useful guides to assess the economic potential of a PGE-Cu-Ni sulphide deposit. It is proposed that the Chernogorsk ultramafc-mafc intrusion of the Noril’sk province is the most promising target in a search for rich PGE-Cu-Ni ores. It is suggested that the previously known mineralogical-geochemical and novel isotope-geochemical characteristics of sulphide and silicate minerals are important indicators in assessing the potential ore content of ultramafc-mafc intrusions of the Noril’sk province. |
| تدمد: | 2500-302X 1681-9004 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::f4f2bb8196e3a80db6492406120f4cc8 https://doi.org/10.24930/1681-9004-2021-21-5-660-682 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi...........f4f2bb8196e3a80db6492406120f4cc8 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 2500302X 16819004 |
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