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Geochemistry of Rhenium and Other Trace Elements in Molybdenite, Sar Cheshmeh Porphyry Cu-Mo Deposit, Iran
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SYSNO ASEP 0545411 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Geochemistry of Rhenium and Other Trace Elements in Molybdenite, Sar Cheshmeh Porphyry Cu-Mo Deposit, Iran Author(s) Shafiei Bafti, B. (IR)
Svojtka, Martin (GLU-S) SAI, RID, ORCID
Abdolahi, M. (IR)Source Title Acta Geologica Sinica-English Edition. - : Wiley - ISSN 1000-9515
Roč. 95, č. 4 (2021), s. 1217-1235Number of pages 19 s. Language eng - English Country CN - China Keywords rhenium ; molybdenite ; LA-ICP-MS ; porphyry Cu ; Sar Cheshmeh ; Iran OECD category Mineralogy R&D Projects GA13-15390S GA ČR - Czech Science Foundation (CSF) Method of publishing Limited access Institutional support GLU-S - RVO:67985831 UT WOS 000690440500014 EID SCOPUS 85113750708 DOI 10.1111/1755-6724.14693 Annotation LA-ICP-MS analysis of molybdenite from the Sar Cheshmeh porphyry Cu-Mo deposit (PCD), Iran, shows moderate concentration of Re (average ~207 ppm) and low concentration of chalcogenides (average of Pb + Te + Bi, ~31 ppm) as well as metalloids (average of As + Sb + Ge, ~4.5 ppm). The early-formed quartz–molybdenites associated with potassic alteration are characterized by moderately low concentration of Re (21–215 ppm with an average of 83 ppm), whereas the transitional quartz–molybdenite veins related to the sericitic stage of mineralization contain more Re (62–465 ppm, with an average of 207 ppm). In contrast, the late-formed quartz–molybdenite veins associated with phyllic alteration show the highest concentration of Re (up to 1273 ppm with an average of 395 ppm). Gradual increase in Re content of molybdenites deposited throughout the evolution of the porphyry system is probably related to elevated ƒO2 and acidic conditions of the ore fluids governing the transitional and late stage of mineralization, when compared to the moderately low ƒO2 and basic conditions of the ore fluids precipitating the low-Re molybdenites associated with potassic alteration. The mixed mantle/crustal source of the ore-related magma and its fractionated composition in Sar Cheshmeh are consistent with magmatic conditions for the formation of Mo-rich and Re-poor PCDs in the world. Workplace Institute of Geology Contact Jana Popelková, popelkova@gli.cas.cz, Sabina Janíčková, Tel.: 233 087 272 Year of Publishing 2022 Electronic address https://onlinelibrary.wiley.com/doi/epdf/10.1111/1755-6724.14693
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