New Constraints on the Main Mineralization Event Inferred from the Latest Discoveries in the Bor Metallogenetic Zone (BMZ, East Serbia)
Article Open access M22
2019
Banješević, Miodrag 
Cvetković, Vladica
von Quadt, Albrecht
Ljubović Obradović, Darivojka
Vasić, Nebojša
Pačevski, Aleksandar
Peytcheva, Irena
MDPI
Minerals (Special Issue Mineral Deposits of Central Europe)
9
11
672
English
M22 - Paper in a prominent international journal
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.
andesite, Balkan Peninsula, hydrothermal events, porphyry copper deposits, Tethyan Metallogenetic Belt
DOI
10.3390/min9110672
ISSN
2075-163X