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Brine chemistry and the spectrum of stratiform sediment-hosted Pb-Zn deposits


Cooke, DR and Large, RR and Bull, SW and McGoldrick, PJ, Brine chemistry and the spectrum of stratiform sediment-hosted Pb-Zn deposits, Mineral Deposits: Processes to Processing - Proceedings of the 5th Biennial SGA Meeting and 10th Quadrennial IAGOD Symposium, 22-25 August 1999, London, pp. 829-832. ISBN 905809068X (1999) [Conference Extract]

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Brine compositions in Australian stratiform sediment-hosted Pb-Zn deposits are controlled by the nature of the basin fill and/or the flow path of the mineralising fluid, McArthur-type Paleoproterozic Pb-Zn deposits of Northern Australian (HYC, Mount Isa, etc.) formed when oxidised (SO42-predominant) basinal brines interacted with a major reductant. In contrast, base metal mineralisation in Broken Hill-type deposits (Broken Hill, Cannington) precipitated when hot, reduced brines of enigmatic origin entered a cool, oxidised environment. Selwyn-type deposits form when reduced metalliferous brines are quenched in a reducing environment. McArthur- and Broken Hill-type deposits contain the bulk of Australia's zinc resources, whereas Selwyn-type deposits are poorly represented in the Australian geological record.

Item Details

Item Type:Conference Extract
Research Division:Earth Sciences
Research Group:Geochemistry
Research Field:Inorganic geochemistry
Objective Division:Mineral Resources (Excl. Energy Resources)
Objective Group:Mineral exploration
Objective Field:Zinc ore exploration
UTAS Author:Cooke, DR (Professor David Cooke)
UTAS Author:Large, RR (Professor Ross Large)
UTAS Author:Bull, SW (Dr Stuart Bull)
UTAS Author:McGoldrick, PJ (Dr Peter McGoldrick)
ID Code:70711
Year Published:1999
Deposited By:Research Division
Deposited On:2011-07-01
Last Modified:2019-02-25

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