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Laser ablation ICPMS study of trace element chemistry in molybdenite coupled with scanning electron microscopy (SEM) - An important tool for identification of different types of mineralization
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SYSNO ASEP 0460127 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Laser ablation ICPMS study of trace element chemistry in molybdenite coupled with scanning electron microscopy (SEM) - An important tool for identification of different types of mineralization Tvůrce(i) Pašava, J. (CZ)
Svojtka, Martin (GLU-S) SAI, RID, ORCID
Veselovský, F. (CZ)
Ďurišová, Jana (GLU-S) RID, SAI
Ackerman, Lukáš (GLU-S) RID, SAI, ORCID
Pour, O. (CZ)
Drábek, M. (CZ)
Halodová, P. (CZ)
Haluzová, Eva (GLU-S) RID, SAIZdroj.dok. Ore Geology Reviews. - : Elsevier - ISSN 0169-1368
Roč. 72, č. 1 (2016), s. 874-895Poč.str. 22 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova molybdenite ; trace-element geochemistry ; Laser Ablation Inductively Coupled Mass ; spectrometry ; scanning electron microscopy ; nano- to micro-inclusions ; Bohemian Massif ; Uzbekistan Vědní obor RIV DB - Geologie a mineralogie CEP GA13-15390S GA ČR - Grantová agentura ČR Institucionální podpora GLU-S - RVO:67985831 UT WOS 000366345100050 EID SCOPUS 84942749627 DOI 10.1016/j.oregeorev.2015.09.007 Anotace Using the example of four different types of associations from the Bohemian Massif (greisen-, gold-, base metal-, and "barren granite"-related) and of one porphyry-Cu-Mo(Au) deposit from Uzbekistan, it is shown that molybdenite from a specific type of mineralization possesses a distinct trace-element geochemical composition, which is locally influenced by the presence of relevant mineral phases occurring in the form of sub-nano-, nano-to micron-scale impurities/inclusions. It is documented that, besides typically lattice-bound elements (Re, and W) and isostructural concentrations of Se and Te (substituting for S), molybdenite can concentrate other metals (e.g., Ag, As, Au, Bi, Cu, Nb, Pb, Zn, Zr) which mostly form inclusions or impurities. The distribution of Re in molybdenite indicates crustal sources for the group of greisen-, base-metal-, and a few of the granite-related deposits, compared to a mixed mantle/crustal source for the Au-related and majority of granite-related deposits. Molybdenite from the Kalmakyr porphyry-Cu-Mo (Au) deposit in Uzbekistan is characterized by the highest mean Re value (236 ppm). Rhenium, Se and W have a homogeneous distribution in molybdenite from this deposit. Only galena and anglesite inclusions were identified visually in molybdenite from this type of deposit, while the presence of most likely sub-nano impurities of Cu, Zn and Ag is indicated by LA-ICPMS time-resolved depth profiles. Pracoviště Geologický ústav Kontakt Jana Popelková, popelkova@gli.cas.cz, Sabina Janíčková, Tel.: 233 087 272 Rok sběru 2017
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