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The Telfer gold-copper deposit, Paterson Province, Western Australia

Alan J. Wilson, Nick Lisowiec, Cameron Switzer, Anthony C. Harris, Robert A. Creaser and C. Mark Fanning
The Telfer gold-copper deposit, Paterson Province, Western Australia (in Geology of the world's major gold deposits and provinces, Richard H. Sillitoe (editor), Richard J. Goldfarb (editor), Francois Robert (editor) and Stuart F. Simmons (editor))
Reviews in Economic Geology (January 2020) 23: 227-249


The giant (>20 Moz) Telfer Au-Cu deposit is located in the Paterson Province of Western Australia and is hosted by complexly deformed marine Neoproterozoic metasedimentary siltstones and quartz arenites. The Telfer district also contains magnetite- and ilmenite-series granitoids dated between ca. 645 and 600 Ma and a world-class W skarn deposit associated with the reduced, approximately 604 Ma O'Callaghans granite. Based on monazite and xenotime U-Pb geochronology, Telfer is estimated to be older than O'Callaghans, forming between 645 and 620 Ma. Au-Cu mineralization at Telfer is hosted in multistage, bedding-parallel quartz-dolomite-pyrite-chalcopyrite reefs and related discordant veins and stockworks of similar composition that were emplaced into two NW-striking doubly plunging anticlines or domes. Mineralization is late orogenic in timing, with hot (< or =460 degrees C), saline (<50 wt % NaCl equiv) ore fluids channeled into preexisting domes along a series of shallow, ENE-verging thrust faults and associated fault-propagated fold corridors. A combination of fault-propagated fold corridors acting as fluid conduits below the apex of the Telfer domes and the rheology and chemical contrast between interbedded siltstone and quartz arenite units within the dome are considered key parameters in the formation of the Telfer deposit. Based on the presence of the reduced Au-Cu-W-Bi-Te-Sn-Co-As assemblage, saline and carbonic, high-temperature hydrothermal fluids in Telfer ore, and widespread ilmenite-series granites locally associated with W skarn mineralization, Telfer is considered to be a distal, intrusion-related gold deposit, the high copper content of which may be explained by the predominance of highly saline, magmatic fluids in gangue assemblages cogenetic with ore.

ISSN: 0741-0123
EISSN: 2374-443X
Serial Title: Reviews in Economic Geology
Serial Volume: 23
Title: The Telfer gold-copper deposit, Paterson Province, Western Australia
Title: Geology of the world's major gold deposits and provinces
Author(s): Wilson, Alan J.Lisowiec, NickSwitzer, CameronHarris, Anthony C.Creaser, Robert A.Fanning, C. Mark
Author(s): Sillitoe, Richard H.editor
Author(s): Goldfarb, Richard J.editor
Author(s): Robert, Francoiseditor
Author(s): Simmons, Stuart F.editor
Affiliation: GeoAqua Consultants, Anguilla, St. Kitts-Nevis-Anguilla
Affiliation: Independent Consultant, London, United Kingdom
Pages: 227-249
Published: 20200101
Text Language: English
Publisher: Society of Economic Geologists, Boulder, CO, United States
References: 28
Accession Number: 2022-009856
Categories: Economic geology, geology of ore depositsStratigraphy
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. charts, 2 tables, geol. sketch maps
S23°00'00" - S20°00'00", E121°00'00" - E124°00'00"
Secondary Affiliation: Newcrest Mining, AUS, AustraliaUniversity of Alberta, CAN, CanadaAustralian National University, AUS, Australia
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2022, American Geosciences Institute.
Update Code: 202209
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