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首页> 外文期刊>Geosciences >Critical Factors Controlling Pd and Pt Potential in Porphyry Cu–Au Deposits: Evidence from the Balkan Peninsula
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Critical Factors Controlling Pd and Pt Potential in Porphyry Cu–Au Deposits: Evidence from the Balkan Peninsula

机译：斑岩型Cu-Au矿床中控制Pd和Pt电位的关键因素：来自巴尔干半岛的证据

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摘要

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.
机译：斑岩状的Cu–Au–Pd±Pt矿床是重要的金资源，但其Pd和Pt势仍然未知。在某些斑岩矿床的中部，Pd，Pt（数百ppb）和Au含量升高与典型的储层磁铁矿-斑脱石-黄铜矿组合有关。 Elatsite斑岩矿床中意外的高品位Cu–（Pd + Pt）（高达6 ppm）矿化，具有高Pd / Pt比，这与Chelopech超热矿床（保加利亚）和Skouries斑岩矿床在空间上相关，可能是在演化的热液系统的后期形成的。斑岩矿床的估计Pd，Pt和Au势与文献模型计算相符，该模型模型证明了水蒸气和盐水清除足够量的Pt和Pd的能力，并可能有助于全球铂族元素（PGE）的生产。控制斑岩沉积潜力的关键条件可能来自岩浆中的金属（由大量的Cr，Co，Ni和Re含量表示的变质软流层地幔楔形物）。 Cr含量可以作为地幔输入的指标。

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