Sulphur and lead isotopes of gold and base metal mineralisation of the Yerrida and Bryah Basins – mineralisation characteristics and implications for exploration.

Margaret Hawke; Sebastien Meffre; Ross Large; Bruce Gemmell

doi:10.1080/22020586.2019.12073221

2nd Australasian Exploration Geoscience Conference: Data to Discovery

ISSN: 2202-0586
E-ISSN:

oa Sulphur and lead isotopes of gold and base metal mineralisation of the Yerrida and Bryah Basins – mineralisation characteristics and implications for exploration.
Authors Margaret Hawke^a,e, Sebastien Meffre^b,e, Ross Large^c,e and Bruce Gemmell^d,e
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^a [email protected] ^b [email protected] ^c [email protected] ^d [email protected] ^e CODES, Centre of Excellence in Ore Deposits, University of Tasmania, Private Bag 79, Sandy Bay, Hobart, , TAS, 7001, , Australia
Publisher: Australian Society of Exploration Geophysicists
Source: ASEG Extended Abstracts, Volume 2019, Issue 2nd Australasian Exploration Geoscience Conference: Data to Discovery, Dec 2019, p. 1 - 6
DOI: https://doi.org/10.1080/22020586.2019.12073221
- Published online: 01 Dec 2019

Abstract

Summary

The Paleoproterozoic Yerrida, Bryah and Padbury Basins are located on the northern margin of the Archean Yilgarn Craton, and are host to orogenic gold (Peak Hill, Fortnum and Horseshoe), volcanic-hosted massive sulfide (VHMS; Horseshoe Lights, Red Bore, Monty and DeGrussa) and epithermal copper deposits (Thaduna) ultramafic, shear hosted copper mineralisation (Forrest-Wodger), as well as economic amounts of talc and manganese.

Characterisation of the sulphur and lead isotope signatures of the different deposit types helps to distinguish the deposits types from one another (e.g. a DeGrussa-type VHMS deposit from a Thaduna-type Cu deposit), as well as the source of mineralising fluids in each deposit. With the exception of Horseshoe Lights, Pb isotopes have characteristically high μ values (10.8) throughout the Bryah Group. Combining this information with accurate geochronological information may provide guidance for exploration for gold and base metal mineralisation, not only in the Bryah and Yerrida, but also throughout the larger Capricorn Orogen.

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/content/journals/10.1080/22020586.2019.12073221

Article Type: Research Article

Keyword(s): Copper; Pb isotope; Sulphur isotope; Volcanic Hosted Massive Sulphide

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oa Sulphur and lead isotopes of gold and base metal mineralisation of the Yerrida and Bryah Basins – mineralisation characteristics and implications for exploration.

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