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Multi-stage enrichment processes for large gold-bearing ore deposits

Citation

Meffre, S and Large, RR and Steadman, JA and Gregory, DD and Stepanov, AS and Kamenetsky, VS and Ehrig, K and Scott, RJ, Multi-stage enrichment processes for large gold-bearing ore deposits, Ore Geology Reviews, 76 pp. 268-279. ISSN 0169-1368 (2016) [Refereed Article]

Copyright Statement

Copyright 2015 Elsevier B.V.

DOI: doi:10.1016/j.oregeorev.2015.09.002

Abstract

A review of previous studies of the world's large hydrothermal gold deposits indicates that the largest deposits tend to show complicated parageneses where multiple gold enrichment events and processes have been involved in the deposit generation. These observations suggest that multistage processes may even be a requirement for the formation of large deposits. In some deposits (e.g. Witwatersrand, Boddington Cadia, Sukhoi Log or Carlin) the different enrichment processes occur millions of years apart. In others, such as many large porphyry deposits, the different stages are much closer in time. In many deposits, particularly sedimentary-hosted deposits, early diffuse enrichment occurs within a particular province that is then upgraded by more focused processes (e.g., Sukhoi Log; Kalgoorlie). The presence of this early diffuse enrichment could explain the tendency for gold deposits to cluster into camps.

This model has important implications, as the presence or absence of multiple gold events could be used to discriminate, at the exploration and feasibility stages, between small deposits with single stage ore genesis and more complicated deposits with multistage enrichment and the potential for larger gold endowment.

Item Details

Item Type:Refereed Article
Keywords:gold, hydrothermal ore deposit, multistage, iant ore deposits
Research Division:Earth Sciences
Research Group:Geochemistry
Research Field:Exploration Geochemistry
Objective Division:Mineral Resources (excl. Energy Resources)
Objective Group:Other Mineral Resources (excl. Energy Resources)
Objective Field:Mineral Resources (excl. Energy Resources) not elsewhere classified
Author:Meffre, S (Dr Sebastien Meffre)
Author:Large, RR (Professor Ross Large)
Author:Steadman, JA (Dr Jeffrey Steadman)
Author:Gregory, DD (Dr Daniel Gregory)
Author:Stepanov, AS (Mr Sasha Stepanov)
Author:Kamenetsky, VS (Professor Vadim Kamenetsky)
Author:Scott, RJ (Dr Robert Scott)
ID Code:103661
Year Published:2016
Web of Science® Times Cited:5
Deposited By:Earth Sciences
Deposited On:2015-10-23
Last Modified:2017-11-02
Downloads:0

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