 | | Journal (article/letter/editorial) | | Belt, Chile and Argentina THOMAS BISSIG,* ALAN H. CLARK,â JAMES K.W. LEE, Department of Geological Sciences...Cordillera Principal. The deposits of the Pascua-Lama, Veladero, El Indio, and Tambo districts are hosted by largely...landforms of regional extent: (1) the ca. 15- to 17-Ma Frontera-Deidad Surface; (2) the ca. 12.5- to 14-Ma Azufreras-Torta...*Present address: Mineral Deposits Research Unit, Department of Earth and Ocean Sciences, University of British...gold-silver-copper belt which straddles the Chile-Argentina frontier along the tectonic and physiographic |  | | Journal (article/letter/editorial) | | 311â330 The Veladero High-Sulfidation Epithermal Gold Deposit, El Indio-Pascua Belt, Argentina: Geochronology...Thomas Bissig,2 and Thomas Monecke3 1 Department 2 Mineral of Mining Engineering, Colorado School of Mines...Golden, Colorado 80401 Deposit Research Unit, Department of Earth, Ocean and Atmospheric Sciences, University...Vancouver, British Columbia V6T 1Z4, Canada 3 Department of Geology and Geological Engineering, Colorado...Golden, Colorado 80401 Abstract The world-class Veladero high-sulfidation epithermal gold deposit is located |  | | Journal (article/letter/editorial) | | Framework of the Veladero High-Sulfidation Epithermal Deposit Area, Cordillera Frontal, Argentina DIEGO CHARCHAFLIĂ...Indio belt of Chile-Argentina, the 12.6-million ounce (Moz) gold, late Miocene Veladero high-sulfidation...belt that was bevelled by the regional Miocene Frontera-Deidad paleogeomorphic surface. The Cerro de las...Formation, deposited across the Frontera-Deidad surface, represents at Veladero an ~16 Ma vent complex characterized...lacustrine tuffaceous sandstone and siltstone. Gold at Veladero is hosted in a tabular, north-northwest elongated |  | Holley, Elizabeth A., Monecke, Thomas, Bissig, Thomas, Reynolds, T. James (2017) Evolution of High-Level Magmatic-Hydrothermal Systems: New Insights from Ore Paragenesis of the Veladero High-Sulfidation Epithermal Au-Ag Deposit, El Indio-Pascua Belt, Argentina. Economic Geology, 112 (7) 1747-1771 doi:10.5382/econgeo.2017.4528 | Journal (article/letter/editorial) | | Paragenesis of the Veladero High-Sulfidation Epithermal Au-Ag Deposit, El Indio-Pascua Belt, Argentina Elizabeth...3,* and T. James Reynolds4 1 Department 2 Department 3 Mineral of Mining Engineering, Colorado School...Golden, Colorado 80401 Deposit Research Unit, Department of Earth and Ocean Sciences, University of British...Denver, Colorado 80202 Abstract The world-class Veladero high-sulfidation epithermal Au-Ag deposit is located...located in the Andean cordillera of Argentina near the northern end of the El Indio-Pascua metallogenic |  | Bissig, Thomas, Lee, James K. W., Clark, Alan H., Heather, Kevin B. (2001) The Cenozoic History of Volcanism and Hydrothermal Alteration in the Central Andean Flat-Slab Region: New 40Ar-39Ar Constraints from the El IndioâPascua Au (-Ag, Cu) Belt, 29°20âČâ30°30âČ S. International Geology Review, 43 (4) 312-340 doi:10.1080/00206810109465016 | Journal (article/letter/editorial) | | Lee , Alan H. Clark & Kevin B. Heather b a Department of Geological Sciences and Geological Engineering...THOMAS BISSIG,1 JAMES K. W. LEE, ALAN H. CLARK, Department of Geological Sciences and Geological Engineering...of alteration events in this major mineralized district. Eight distinct Tertiary stratigraphic units are...period include, from north to south, Pascua-Lama, Veladero, SancarrĂłn, RĂo del Medio, El Indio, Tambo, and...limit of the flat slab, the FarallĂłn Negro Cu-Au district 300 km to the east, and the Los Pelambres-El PachĂłn |  | Ford, A., Hagemann, S.G., Fogliata, A.S., Miller, J.M., Mol, A., Doyle, P.J. (2015) Porphyry, epithermal, and orogenic gold prospectivity of Argentina. Ore Geology Reviews, 71. 655-672 doi:10.1016/j.oregeorev.2015.05.013 | Journal (article/letter/editorial) | | epithermal, and orogenic gold prospectivity of Argentina A. Ford a,b,â, S.G. Hagemann a, A.S. Fogliata...FundaciĂłn Miguel Lillo, University of TucumĂĄn, Argentina d Troy Resources Ltd., 214 King Street West, Suite...Accepted 18 May 2015 Available online xxxx Keywords: Argentina Gold Prospectivity mapping a b s t r a c t This...porphyry, epithermal, and orogenic gold districts in Argentina, including the tectonic, geological, and structural...epithermal and orogenic gold mineralization in Argentina. The results of the prospectivity mapping highlight |  | Deyell, C. L., Leonardson, R., Rye, R. O., Thompson, J. F. H., Bissig, T., Cooke, D. R. (2005) Alunite in the Pascua-Lama High-Sulfidation Deposit: Constraints on Alteration and Ore Deposition Using Stable Isotope Geochemistry. Economic Geology, 100 (1) 131-148 doi:10.2113/100.1.0131 | Journal (article/letter/editorial) | | located in the El Indio-Pascua belt of Chile and Argentina, contains over 16 million ounces (Moz) Au and...this stage occurs as fine intergrowths of alunite-quartz ± kaolinite, dickite, and pyrophyllite that selectively...situated in the Cordillera Principal of Chile and Argentina at the north end â Corresponding author: e-mail...of hydrothermal alteration occur throughout the district and are visible as distinct color anomalies and...veins at la Mejicana, Nevados del Famatina district, Argentina (Losada-Calderon and McPhail, 1996), late |  | Sillitoe, Richard H., Devine, Fionnuala A.M., Sanguinetti, Martin I., Friedman, Richard M. (2019) Geology of the JosemarĂa Porphyry Copper-Gold Deposit, Argentina: Formation, Exhumation, and Burial in Two Million Years. Economic Geology, 114 (3) 407-426 doi:10.5382/econgeo.4645 | Journal (article/letter/editorial) | | of the JosemarĂa Porphyry Copper-Gold Deposit, Argentina: Formation, Exhumation, and Burial in Two Million...Resources Inc., Gorriti 4855, CABA, Buenos Aires, Argentina Centre for Isotopic and Geochemical Research...located in the Frontal Cordillera of San Juan Province, Argentina, near the present-day northern limit...Permian to Triassic age. The earlier, more intensely quartz ± magnetite-veined porphyry phases and contiguous... zones, from shallow advanced argillic (mainly quartz-pyrophyllite) and underlying sericitic to deeper |  | | Journal (article/letter/editorial) | | from the El Indio-Pascua AuâAgâCu belt, Chile/Argentina Received: 21 October 2002 / Accepted: 6 June...y T. Bissig (&) Ă A. H. Clark Ă J. K. W. Lee Department of Geological Sciences and Geological Engineering...Miocene epithermal deposits of the El Indio AuâAg district in its center (Fig. 1). Both models, however,...Geodynamic relationships The seamount-encrusted Juan FernaÌndez Ridge is at present being consumed beneath...could have been provoked by the subduction of the Juan Fernandez Ridge at this latitude. The exact relationships |  | Toselli, A., Pomposiello, C., Durand, F., Osella, A., De Luchi, M. LopĂ©z (1999) South American Global Geoscience Transect 7: Cordillera Frontal to Llanura Chaco Pampeana, Northern Argentina. International Geology Review, 41 (2) 154-174 doi:10.1080/00206819909465137 | Journal (article/letter/editorial) | | Cordillera Frontal to Llanura Chaco Pampeana, Northern Argentina a b c d A. Toselli , C. Pomposiello , F. Durand...y Tecnicas, Miguel Lillo 205, TucumĂĄn, 4000, Argentina b Centra de Investigaciones en Recursos GeĂłlogicos... Ramirez de Velasco 847, Buenos Aires, 1414, Argentina c Universidad National de Tucuman , Consejo National...y Tecnicas, Miguel Lillo 205, Tucuman, 4000, Argentina d Dlo. Fisica, Facultad de Ciencias Exactas y...Cientificas y Tecnicas, Argentina, Ciudad Univesitaria Pab. I, Buenos Aires, 1428, Argentina e Centra de. Investigaciones |  | Maydagan, L., Franchini, M., Chiaradia, M., Dilles, J., Rey, R. (2014) The Altar Porphyry Cu-(Au-Mo) Deposit (Argentina): A Complex Magmatic-Hydrothermal System with Evidence of Recharge Processes. Economic Geology, 109 (3) 621-641 doi:10.2113/econgeo.109.3.621 | Journal (article/letter/editorial) | | 621â641 The Altar Porphyry Cu-(Au-Mo) Deposit (Argentina): A Complex Magmatic-Hydrothermal System with...AutĂłnoma de Buenos Aires, Argentina 2 Departamento 3 Departamento 4 Department de GeologĂa y PetrĂłleo...1400, 8300 NeuquĂ©n, Argentina de GeologĂa, Universidad Nacional del Sur, San Juan 670, 8000 BahĂa Blanca...Blanca, Argentina of Mineralogy, University of Geneva, Rue des MaraĂźchers 13, 1205 Geneva, Switzerland...(Oeste) 117, Piso 5, Edificio Derby, Ciudad San Juan, Argentina Abstract Altar (31Âș 29â S, 70Âș 28â W) is |  | Alasino, P.H., Dahlquist, J.A., Pankhurst, R.J., Galindo, C., Casquet, C., Rapela, C.W., Larrovere, M.A., Fanning, C.M. (2012) Early Carboniferous sub- to mid-alkaline magmatism in the Eastern Sierras Pampeanas, NW Argentina: A record of crustal growth by the incorporation of mantle-derived material in an extensional setting. Gondwana Research, 22 (3) 992-1008 doi:10.1016/j.gr.2011.12.011 | Journal (article/letter/editorial) | | magmatism in the Eastern Sierras Pampeanas, NW Argentina: A record of crustal growth by the incorporation...Rioja, Argentina INGeReN-CENIIT-UNLaR, Av. Gob. Vernet y Apostol Felipe, 5300, La Rioja, Argentina c CICTERRA-CONICET-UNC...SarsïŹeld 1611, Pab. Geol., X5016CGA-CĂłrdoba, Argentina d British Geological Survey, Keyworth, Nottingham...CIG-CONICET-UNLP, Calle 1 No. 644, 1900, La Plata, Argentina g Research School of Earth Sciences, The Australian...Cerro La Gloria in western Sierra de Famatina (NW Argentina) is representative of sub- to mid-alkaline Carboniferous |  | | Journal (article/letter/editorial) | | available to authorized users. A. R. Goss (&) Department of Geological Sciences, University of Florida...FL 32611, USA e-mail: argoss@ufl.edu S. M. Kay Department of Earth and Atmospheric Sciences, Cornell University...of eruptive centers along the border between Argentina, Chile, and Bolivia. Further to the south near...*6.4â2.2 Ma Cerro GalaÌn caldera of northwest Argentina (Sparks et al. 1985; Kay et al. 2009) produced...6â2 Ma eruption of the Monte Pissis, Sierras de Veladero, and Bonete Chico dacitic centers (Figs. 1, 2; |  | | Journal (article/letter/editorial) | | Earth. In 2017, the Central Andes accounted for the mine production of around 39% of the worldâs copper,...Williams-Jones (2005). Figure 1 ized by mineralization in quartz-bearing veinlets, as stockwork (Figs. 1, 2), as...youngest and easternmost extend from central Chile/Argentina to Bolivia and to northern Peru and beyond. Table...leading copper producer, with Peru second). 1 Department of Earth Sciences, University of Geneva rue des...deposit looking to the north. Present surface (before mining) is only a few hundred meters below paleosurface |  | Chouinard, A., Williams-Jones, A. E., Leonardson, R. W., Hodgson, C. J., Silva, P., Tellez, C., Vega, J., Rojas, F. (2005) Geology and Genesis of the Multistage High-Sulfidation Epithermal Pascua Au-Ag-Cu Deposit, Chile and Argentina. Economic Geology, 100 (3) 463-490 doi:10.2113/gsecongeo.100.3.463 | Journal (article/letter/editorial) | | Pascua Au-Ag-Cu Deposit, Chile and Argentina ANNICK CHOUINARD,â Department of Geological Sciences and Geological...Ontario, Canada K7L 3N6 ANTHONY E. WILLIAMS-JONES, Department of Earth and Planetary Sciences, McGill University...the El Indio belt of north-central Chile and Argentina and was the product of a high-sulfidation hydrothermal...system developed above a porphyry stock located in Argentina. Extensive vuggy silica and advanced argillic...extreme, can produce rocks consisting dominantly of quartz, termed vuggy silica alteration by Stoffregen (1987) |  | | Journal (article/letter/editorial) | | south. The Cordillera has a long and colorful gold-mining history dating back to the 16th century, since...adularia Magmatic Simmons et al. (2005) Mo Quartz diorite to granodiorite porphyry stocks + wall...disseminated 2 Stockwork Cu, Mo Diorite to quartz diorite stocks + wall rocks Skarn Au 4 Irregular...orogenic deposits are typically in the form of quartz veins and vein arrays. Clearly, depth of erosion...category because of the close association of the quartz veins with porphyry dikes, but considered as orogenic |  | Oyarzun, Roberto, Lillo, Javier, Oyarzun, Jorge, Higueras, Pablo (2007) Plate Interactions, Evolving Magmatic Styles, and Inheritance of Structural Paths: Development of the Gold-Rich, Miocene El Indio Epithermal Belt, Northern Chile. International Geology Review, 49 (9) 844-853 doi:10.2747/0020-6814.49.9.844 | Journal (article/letter/editorial) | | a Universidad Complutense b Universidad Rey Juan Carlos c Universidad de La Serena d Universidad...Ciencias Experimentales y TecnologĂa, Universidad Rey Juan Carlos, TulipĂĄn s/n, 28933 MĂłstoles (Madrid), Spain...Miocene El Indio belt. Late Miocene subduction of the Juan FernĂĄndez Ridge (JFR) coincided with a substancial...epithermal gold and porphyry copper deposits (Andacollo district; Oyarzun et al. 1996); and Kiruna-type iron deposits...tuffs). The deposit (before mining) hosted two types of veins. (1) Gold-quartz (up to 6 m thick), with native |  | | Journal (article/letter/editorial) | | Avenida Velez Sarsfield 1611, X5016GCA, CoÌrdoba, Argentina Received 15 April 2005; received in revised form...preserved within the broken foreland of Western Argentina along the Famatina Ranges. This paper focuses...of Famatina, southern Central Andes, western Argentina. This volcanism, more than 200 km east of the...Geological setting The Famatina Ranges in western Argentina (Fig. 1) constitute the westernmost part of the...broken foreland development in western and central Argentina (Jordan and Allmendinger, 1986; Ramos et al., |  | | Journal (article/letter/editorial) | | HOUSTON, TX 77098, USA 2 CORNELL UNIVERSITY, DEPARTMENT OF EARTH AND ATMOSPHERIC SCIENCE, SNEE HALL,...crystallization and suppression of plagioclase fractionation. Quartz and feldspar xenocrysts were acquired from locally...338S shallowed significantly after 10 Ma as the Juan Fernandez Ridge on the Nazca plate began subducting...andesitic flows in the eastern Valle Ancho in Argentina that have K/Ar ages of 9·5 0·5 and 9·1 0·6...flows occur in a north^south belt to the east in Argentina, which extends for 80 km in a topographic depression |  | | Journal (article/letter/editorial) | | porphyry deposit, Utah, USA. After over a century of mining, the Bingham porphyry deposit (Supplementary Fig...several hundred kilometres northeast of the main Department of Earth and Atmospheric Sciences, University...reserved 911 PROGRESS ARTICLE | FOCUS Box 1 | In mining, bigger is better The purpose of mineral exploration...deposits also benefit from economies of scale during mining, centralization of planning and administrative...equipment, thus lowering costs. Similarly, long mine lives justify the high capital expenditures required |  | | Journal (article/letter/editorial) | | mineralization occurs in a distinctive sequence of quartz-bearing veinlets as well as in disseminated form...in magmatic arc settings. At the regional and district scales, the occurrence of many deposits in belts...Nevados del Famatina Northparkes Pascua-Lama & Veladero Andacollo Principal metals Cu-Mo Cu-Mo-Au Cu-Au...the geology of porphyry Cu systems at regional, district, and deposit scales. The resultant geologic model...El Abra 22° A AL C M E ALT O Regional- and District-Scale Characteristics 0361-0128/98/000/000-00 |  | | Journal (article/letter/editorial) | | mineralization is centered on a composite diorite to quartz diorite porphyry stock, within which five outward-younging...and 0.4% Cu. The subsequent porphyry phases are quartz dioritic in composition and characterized by progressively...mineralization in the lower half of the deposit accompanies quartz ± magnetite-veined, potassic-altered rocks, whereas...whereas the shallower mineralization occurs within quartz-kaoliniteâdominated, advanced argillic alteration...ledges, some auriferous, composed of vuggy residual quartz and/or silicified rock. The chalcopyrite-pyrite |  | | Journal (article/letter/editorial) | | (~28°S, ~ 68°W) A.R. Goss a,â, S.M. Kay b,1 a b Department of Geological Sciences, University of Florida...Florida, Gainesville, FL 32608 32611, United States Department of Earth and Atmospheric Sciences, Cornell University...Hermanos lavas (white), 7â6 Ma (Chile) and 6â3 Ma (Argentina) Pircas Negras (stippled), and 3â2 Ma upper Rio...location of the crustally-contaminated Quebrada de Veladero Pircas Negras ïŹow (sample CO324). A.R. Goss...ultramaïŹc crystal clots and resorbed xenocrysts of quartz and plagioclase. They erupted between ⌠8â2 Ma |  | | Journal (article/letter/editorial) | | California-Vetas mining district. Coeval volcanic rocks are not recognized in the district and volumetrically...phyllic alteration (sericite-illite, quartz, pyrite) associated with quartz-pyrite veins and its age is constrained...multiphase hydrothermal breccia development and quartz-alunite alteration. Stage 3 is defined by presence...sphalerite. Pyrite, quartz, and alunite are common to all epithermal stages. Residual vuggy quartz is scarce....liquid and vaporrich inclusions and, together with quartz vein textures, suggest that boiling was an important |  | | Journal (article/letter/editorial) | | of Chile and Argentina C.L. Deyell*, G.M. Dipple Mineral Deposit Research Unit, Department of Earth and...alunite (alun), kaolinite (kao), dickite (dick), quartz (qtz), pyrophyllite (pyl), zunyite (zuny), hematite...belt, located in the Central Andes of Chile and Argentina, is one of the worldâs largest concentrations...world-class epithermal district in the Central Andean Cordillera straddles the Chileâ Argentina border (Fig. 3)...silver, and 1 Mt of copper, mostly from the El Indio mine. Exploration activity is currently focused at the |
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