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Marcona, Raul-Condestable, Hierro Acari, Yaurilla, Eliana, Monterrosas |
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Peru |
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Cu Fe
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Super Porphyry Cu and Au
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IOCG Deposits - 70 papers
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All papers now Open Access.
Available as Full Text for direct download or on request. |
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A number of significant magnetite-apatite and iron oxide copper-gold deposits are known and exploited in the Coastal Belt of Peru, which may be either, or both, of amphibolitic Cu-Fe skarn and Iron Oxide Copper-Gold style mineralisation. These include the Marcona, Raul-Condestable, Fe-Acari, Yaurilla, Eliana, and Monterrosas deposits.
The principal deposits are Raul-Condestable (50 Mt @ 1.5% Cu), Monterrosas (1.9 Mt @ 1.1% Cu) and Eliana. They are all found within the continental margin which during the Lower Cretaceous (120 to 100 Ma) experienced incipient rifting accompanied by batholithc gabbronorite intrusion at depth and the accumulation of submarine andesitic volcanic and sedimentary rocks. The iron-copper deposits were developed in association with intrusive activity induced by this magmatism. The deposits are characterised by chalcopyrite concentrations with low Ti magnetite and/or pyrite in an actinolite gangue, with lesser amphiboles, apatite, pyrrhotite and sodic scapolite. Copper ores are fracture controlled and hosted by Cretaceous granodiorites at Monterrosas and Eliana. Volcanogenic strata-bound mantos and disseminated sulphides, stringers and minor veins are found at Raul and Condestable.
Iron deposits are also found at Marcona (>1500 Mt @ 60% Fe) and Hierro Acari (40 Mt @ 66% Fe) in Lower Cretaceous and Upper Jurassic rocks of this Coastal Belt respectively.
These deposits are also the subject of a paper in the monograph: "Hydrothermal Iron Oxide Copper-Gold & Related Deposits: A Global Perspective" volume 2, published by PGC Publishing, Adelaide, Australia.
See the full abstract summarising the setting of these deposits by selecting the option offered below.
Abstract
For detail consult this paper or other reference(s) listed below.
The most recent source geological information used to prepare this decription was dated: 2002.
This description is a summary from published sources, the chief of which are listed below.
© Copyright Porter GeoConsultancy Pty Ltd. Unauthorised copying, reproduction, storage or dissemination prohibited.
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Chen H, Clark A H and Kyser T K, 2010 - The Marcona Magnetite Deposit, Ica, South-Central Peru: A Product of Hydrous, Iron Oxide-Rich Melts?: in Econ. Geol. v105 pp 1441-1456
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de Haller A, Corfu F, Fontbote L, Schaltegger U, Barra F, Chiaradia M, Frank M and Alvarado J Z, 2006 - Geology, Geochronology, and Hf and Pb Isotopic Data of the Raul-Condestable Iron Oxide-Copper-Gold Deposit, Central Coast of Peru: in Econ. Geol. v101 pp 281-310
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Injoque J, 2002 - Fe Oxide-Cu-Au Deposits in Peru: An Integrated View: in Porter T M (Ed), 2002 Hydrothermal Iron Oxide Copper-Gold & Related Deposits: A Global Perspective PGC Publishing, Adelaide v.2 pp. 97-113
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Vidal C E, Injoque-Espinoza J, Sidder G B, Mukasa S B 1990 - Amphibolitic Cu-Fe skarn deposits in the central coast of Peru: in Econ. Geol. v85 pp 1447-1461
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Williams P J, Barton M D, Johnson D A, Fontbote L, de Haller A, Mark G, Oliver N H S and Marschik R, 2005 - Iron oxide copper-gold deposits: Geology, space-time distribution and possible modes of origin: in Hedenquist J W, Thompson J F H, Goldfarb R J and Richards J P (Eds.), 2005 Economic Geology 100th Anniversary Volume, Society of Economic Geologists, Denver, pp 371-405
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Porter GeoConsultancy Pty Ltd (PorterGeo) provides access to this database at no charge. It is largely based on scientific papers and reports in the public domain, and was current when the sources consulted were published. While PorterGeo endeavour to ensure the information was accurate at the time of compilation and subsequent updating, PorterGeo, its employees and servants: i). do not warrant, or make any representation regarding the use, or results of the use of the information contained herein as to its correctness, accuracy, currency, or otherwise; and ii). expressly disclaim all liability or responsibility to any person using the information or conclusions contained herein.
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