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Open AccessArticle

New Constraints on the Main Mineralization Event Inferred from the Latest Discoveries in the Bor Metallogenetic Zone (BMZ, East Serbia)

1
Technical Faculty in Bor, University of Belgrade, Vojske Jugoslavije 12, 19210 Bor, Serbia
2
Faculty of Mining and Geology, University of Belgrade, Đušina 7, 11000 Belgrade, Serbia
3
Institute of Geochemistry and Petrology, Eth Zurich, Clausiusstrasse 25, 8092 Zurich, Switzerland
4
Geological Survey of Serbia, Rovinjska 12, 11000 Belgrade, Serbia
5
Geological Institute, Bulgarian Academy of Science, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
*
Author to whom correspondence should be addressed.
Minerals 2019, 9(11), 672; https://doi.org/10.3390/min9110672
Received: 31 August 2019 / Revised: 19 October 2019 / Accepted: 21 October 2019 / Published: 31 October 2019
(This article belongs to the Special Issue Mineral Deposits of Central Europe)
This study aims at better constraining the link between magmatism and metallogeny in the south-easternmost sector of the Bor Metallogenetic Zone (BMZ), where the world-class copper and gold deposit of Čukaru Peki was recently discovered. The obtained U/Pb zircon ages confirm the earlier knowledge that the major Cu–Au porphyry and epithermal mineralization in the BMZ is genetically related to the first volcanic phase (‘Timok andesite’; 85–90 Ma). However, the data also suggest that during this phase, two subgroups of andesite porphyry were formed; they are named volcanic phase 1A (V1A) and volcanic phase 1B (V1B). The V1A andesite (89–90 Ma) is plagioclase-hornblende phyric, holocrystalline and ubiquitously hydrothermally altered and/or mineralized, whereas the V1B (85–86 Ma) is hornblende-plagioclase phyric, holo- to hypocrystalline, fresh, and non-mineralized. According to our simplified model, the contrasting productivity of the V1A and V1B is explained by fluctuations during AFC (assimilation-fractional crystallization) processes of water-rich parental magma, which have controlled the order of crystallization of hornblende and plagioclase in the V1A and V1B andesite. View Full-Text
Keywords: andesite; Balkan Peninsula; hydrothermal events; porphyry copper deposits; Tethyan Metallogenetic Belt andesite; Balkan Peninsula; hydrothermal events; porphyry copper deposits; Tethyan Metallogenetic Belt
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Banješević, M.; Cvetković, V.; von Quadt, A.; Ljubović Obradović, D.; Vasić, N.; Pačevski, A.; Peytcheva, I. New Constraints on the Main Mineralization Event Inferred from the Latest Discoveries in the Bor Metallogenetic Zone (BMZ, East Serbia). Minerals 2019, 9, 672.

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