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Using mineral chemistry to detect the location of concealed porphyry deposits - an example from Resolution, Arizona


Cooke, DR and Wilkinson, JJ and Baker, M and Agnew, P and Wilkinson, CC and Martin, H and Chang, Z and Chen, H and Gemmell, JB and Inglis, SM and Danyushevsky, L and Gilbert, S and Hollings, P, Using mineral chemistry to detect the location of concealed porphyry deposits - an example from Resolution, Arizona, Proceedings of the 27th International Applied Geochemistry Symposium 2015, 20-24 April 2015, Arizona, USA, pp. 1-6. (2015) [Refereed Conference Paper]

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Porphyry-related mineral districts can host many major ore deposits of diverse styles and metal associations, including porphyry, epithermal and skarn deposits. In these deposits, hydrothermal alteration is typically zoned, and alteration zoning has long been an important tool used in their exploration (Fig. 1). However, the various mineral assemblages and textures that characterize each alteration zone are also present within barren hydrothermal systems, and in some cases may also be produced by non-mineralizing processes such as regional metamorphism. Discriminating mineralized and barren systems, being able to locate well-mineralized hydrothermal centers, and recognizing the distal footprints of mineralization continue to be great challenges to explorers. In this abstract, we demonstrate how the combination of epidote and chlorite chemistry can be used to successfully detect the location of a porphyry deposit, using the Resolution porphyry Cu-Mo deposit as a case study. The results presented in this paper are derived from a blind site test submitted to AMIRA International project P765A by Rio Tinto Exploration (RTX).

Item Details

Item Type:Refereed Conference Paper
Keywords:porphyry, copper, geochemical exploration, vectoring
Research Division:Earth Sciences
Research Group:Geology
Research Field:Resource geoscience
Objective Division:Mineral Resources (Excl. Energy Resources)
Objective Group:Other mineral resources (excl. energy resources)
Objective Field:Other mineral resources (excl. energy resources) not elsewhere classified
UTAS Author:Cooke, DR (Professor David Cooke)
UTAS Author:Wilkinson, JJ (Professor Jamie Wilkinson)
UTAS Author:Baker, M (Dr Michael Baker)
UTAS Author:Wilkinson, CC (Dr Clara Wilkinson)
UTAS Author:Chang, Z (Dr Zhaoshan Chang)
UTAS Author:Chen, H (Dr Huayong Chen)
UTAS Author:Gemmell, JB (Professor Bruce Gemmell)
UTAS Author:Inglis, SM (Mr Shaun Inglis)
UTAS Author:Danyushevsky, L (Professor Leonid Danyushevsky)
UTAS Author:Gilbert, S (Ms Sarah Gilbert)
ID Code:106997
Year Published:2015
Deposited By:Centre for Ore Deposit Research - CODES CoE
Deposited On:2016-02-29
Last Modified:2018-04-04
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