A distinctive Pd-Hg signature in detrital gold derived from alkalic Cu-Au porphyry systems

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• 作者：Rob Chapman^a ; ^{r.j.chapman@leeds.ac.uk} ; Tom Mileham^a ; Murray Allan^b ; Jim Mortensen^c
• 关键词：Gold ; Palladium ; Mercury ; Alkalic porphyries ; Microchemical signature ; Indicator mineral
• 刊名：Ore Geology Reviews
• 出版年：2017
• 出版时间：April 2017
• 年：2017
• 卷：83
• 期：Complete
• 页码：84-102
• 全文大小：4017 K
• 卷排序：83

文摘

First compositional study of placer-lode relationships in gold from Cu-Au porphyries. Gold formed by exsolution from Cu minerals are too small to be routinely collected by panning. Gold from associated sub-epithermal veins shows a distinctive Pd-Hg signature. Detrital gold of this type can act as a pathfinder, and is distinct from gold formed in other source styles. Consideration of Cu-Au porphyries worldwide suggest that these features could be generic.