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Geosciences 2014, 4(1), 31-49; doi:10.3390/geosciences4010031

Critical Factors Controlling Pd and Pt Potential in Porphyry Cu–Au Deposits: Evidence from the Balkan Peninsula

1
Institute of Geology and Mineral Exploration (IGME), Sp. Loui 1, C Entrance, Olympic Village, GR-13677 Acharnai, Greece
2
Depatment of Economic Geology and Geochemistry, Faculty of Geology and Geoenvironment, National and Kapodistrian University of Athens, Panepistimiopolis, GR-15784 Athens, Greece
3
Department of Geology, University of Sofia, Sofia 1504, Bulgaria
*
Author to whom correspondence should be addressed.
Received: 13 November 2013 / Revised: 28 February 2014 / Accepted: 28 February 2014 / Published: 12 March 2014
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Abstract

Porphyry Cu–Au–Pd±Pt deposits are significant Au resources, but their Pd and Pt potential is still unknown. Elevated Pd, Pt (hundreds of ppb) and Au contents are associated with typical stockwork magnetite-bornite-chalcopyrite assemblages, at the central parts of certain porphyry deposits. Unexpected high grade Cu–(Pd+Pt) (up to 6 ppm) mineralization with high Pd/Pt ratios at the Elatsite porphyry deposit, which is found in a spatial association with the Chelopech epithermal deposit (Bulgaria) and the Skouries porphyry deposit, may have formed during late stages of an evolved hydrothermal system. Estimated Pd, Pt and Au potential for porphyry deposits is consistent with literature model calculations demonstrating the capacity of aqueous vapor and brine to scavenge sufficient quantities of Pt and Pd, and could contribute to the global platinum-group element (PGE) production. Critical requirements controlling potential of porphyry deposits may be from the metals contained in magma (metasomatized asthenospheric mantle wedge as indicated by significant Cr, Co, Ni and Re contents). The Cr content may be an indicator for the mantle input.
Keywords: porphyry; palladium; platinum; potential; transitional; Greece; Bulgaria porphyry; palladium; platinum; potential; transitional; Greece; Bulgaria
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Eliopoulos, D.G.; Economou-Eliopoulos, M.; Zelyaskova-Panayiotova, M. Critical Factors Controlling Pd and Pt Potential in Porphyry Cu–Au Deposits: Evidence from the Balkan Peninsula. Geosciences 2014, 4, 31-49.

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