A Sulfur, Carbon, Oxygen, and Strontium Isotope Study of the Volcanic-Hosted El Soldado Manto-Type Copper Deposit, Chile: The Essential Role of Bacteria and Petroleum

Wilson, N. S. F.

doi:10.2113/98.1.163

Cited by 11 publications

(35 citation statements)

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“…This conclusion is in agreement with conceptual models on IOCG formation (e.g. Barton and Johnson, 1996;Williams et al, 2005;Williams et al, 2010;Chen, 2013;Barton, 2014) that involve multiple sulfur sources including magmatic sulfur (Marschik and Fontbote, 2001;Oliver et al, 2004;Pollard, 2006;de Haller and Fontbote, 2009) mixed with external sulfur such as seawater or evaporites (Haynes et al, 1995;Barton and Johnson, 1996;Barton and Johnson, 2000;Benavides et al, 2007;Chen, 2010), formation waters and metamorphic fluids (Kendrick et al, 2007;Monteiro et al, 2008) as well as sulfur contributed via reaction with previously formed pyrite (Wilson et al, 2003;Davidson et al, 2007).…”

Section: Introductionsupporting

confidence: 81%

A magmatic source of hydrothermal sulfur for the Prominent Hill deposit and associated prospects in the Olympic iron oxide copper-gold (IOCG) province of South Australia

Schlegel

Wagner

Boyce

et al. 2017

Ore Geology Reviews

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Section: Introductionsupporting

confidence: 81%

A magmatic source of hydrothermal sulfur for the Prominent Hill deposit and associated prospects in the Olympic iron oxide copper-gold (IOCG) province of South Australia

Schlegel

Wagner

Boyce

et al. 2017

Ore Geology Reviews

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“…The orebodies are structurally and stratigraphically controlled forming breccias, veins and/or mantos. Several Lower Cretaceous deposits (El Soldado, Talcuna, Uchumi) are characterized by the presence of bitumen, which acted as a geochemical trap for late Cu-rich hydrothermal fluids (Zentilli et al, 1997;Wilson et al, 2003).…”

Section: Accepted M Manuscriptmentioning

confidence: 99%

Unraveling the origin of the Andean IOCG clan: A Re-Os isotope approach

Barra

Reich

Selby

et al. 2017

Ore Geology Reviews

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'Unraveling the origin of the Andean IOCG clan : a Re-Os isotope approach.', Ore geology reviews., 81 (Part 1). pp. 62-78. Further information on publisher's website: Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. A C C E P T E D M A N U S C R I P T Chilean IOCGs is the result of different events with metals derived from diverse sources i.e., the magmatic-hydrothermal system and basement/host rocks. A C C E P T E D M A N U S C R I P T ACCEPTED MANUSCRIPTRhenium and Os concentrations for the various studied deposits vary over a wide range of values at the ppb and ppt level, respectively, with many sulfides and magnetite bearing appreciable no common Os. The Re and Os contents in sulfides (pyrite, IOCGs in China and Australia argue for the involvement of a much more radiogenic crustal source possibly related to non-magmatic oxidized saline brines that leached basement rocks. A C C E P T E D M A N U S C R I P T ACCEPTED MANUSCRIPTWe conclude that Andean IOCG (and IOA) deposits in northern Chile were formed mainly by magmatic-hydrothermal processes related to the formation and emplacement of plutonic rocks with moderate contribution from leaching of basement and/or volcanic host rocks. Surface or basin-derived brines as well as sediments appear to play only a minor role in the formation of the Chilean IOCG clan.

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“…However, it has recently been proposed that dissimilatory sulfate-reducing bacteria may have played a prominent in situ role in the formation of economically important sediment-hosted seafloor exhalative SEDEX Zn-Pb-Ag deposits (Heppenheimer et al, 1995;Schroll and Rantitsch, 2005). Similarly, a new interpretation of the origin of a large manto-type copper deposit in Chile proposes that bacterial sulfate reduction and petroleum degradation were the major processes responsible for forming this world-class deposit (Wilson et al, 2003). To date, research has principally relied on stable isotope investigations (particularly sulfur) to evaluate bacterial processes in SEDEX deposits, and only recently have mineral textures been used to support a bacterial origin for some of these ores (McGoldrick, 1999;Kucha et al, 2005).…”

mentioning

confidence: 99%