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Processes of ore formation in the stratiform sediment-hosted Zn-Pb deposits of Northern Australia: testing the Century model

Citation

Cooke, DR and Bull, SW and Large, RR, Processes of ore formation in the stratiform sediment-hosted Zn-Pb deposits of Northern Australia: testing the Century model, Journal of Geochemical Exploration, 78-79 pp. 519-524. ISSN 0375-6742 (2003) [Refereed Article]

DOI: doi:10.1016/S0375-6742(03)00074-8

Abstract

Numerical simulations of chemical processes of ore formation are used to test hypotheses concerning the genesis of northern Australian Proterozoic stratiform sediment-hosted Zn-Pb deposits. Exhalation of metal-bearing brines into anoxic marine waters is shown to be effective for massive sulfide ore formation. The 'Century' model, late diagenetic massive sulfide deposition involving metal-laden brines interacting with hydrocarbon reservoirs, is also demonstrated to have potential as an ore-forming process. It requires that H2S(g) is available in the gas reservoir and that acidification is prevented by dissolution of wall rock carbonate. Seawater mixing is capable of producing laminated sulfide ore. Brine-sour gas interaction will most likely produce discordant Zn-Pb ore due to carbonate dissolution. © 2003 Elsevier Science B.V. All rights reserved.

Item Details

Item Type:Refereed Article
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:Cooke, DR (Professor David Cooke)
Author:Bull, SW (Dr Stuart Bull)
Author:Large, RR (Professor Ross Large)
ID Code:27916
Year Published:2003
Web of Science® Times Cited:8
Deposited By:Centre for Ore Deposit Research - CODES CoE
Deposited On:2003-08-01
Last Modified:2011-11-07
Downloads:0

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