 | | 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...of Alunite and Jarosite Elizabeth A. Holley,1,â Thomas Bissig,2 and Thomas Monecke3 1 Department 2 Mineral...Mineral of Mining Engineering, Colorado School of Mines, 1600 Illinois Street, Golden, Colorado 80401...80401 Deposit Research Unit, Department of Earth, Ocean and Atmospheric Sciences, University of British...Vancouver, British Columbia V6T 1Z4, Canada 3 Department of Geology and Geological Engineering, Colorado |  | | 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 |  | 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) | | Geologists, Inc. Economic Geology, v. 100, pp. 131â148 Alunite in the Pascua-Lama High-Sulfidation Deposit: Constraints...located in the El Indio-Pascua belt of Chile and Argentina, contains over 16 million ounces (Moz) Au and...mineralization are recognized, including all types of alunite-bearing advanced argillic assemblages (magmatic-hydrothermal...magmatic steam, and supergene). The occurrence of alunite throughout the paragenesis of this epithermal system...nature of alteration and mineralization of the alunite-pyrite-enargite assemblage in the deposit. Early |  | 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 |  | 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...sea level in the Frontal Cordillera of San Juan Province, Argentina, ~8 km east of the border with Chile...Indio rt Pliocene - Holocene sediments TINA Veladero ue ho ac 20 km GEOLOGY Valeriano 15° si |  | | 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 |  | 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...significant amounts of the following minerals: (1) alunite, pyrite, and enargite; (2) pyrite; (3) pyrite and...system developed above a porphyry stock located in Argentina. Extensive vuggy silica and advanced argillic |  | | Journal (article/letter/editorial) | | solution between alunite and natroalunite in the El IndioâPascua belt of Chile and Argentina C.L. Deyell*...Deyell*, G.M. Dipple Mineral Deposit Research Unit, Department of Earth and Ocean Sciences, University of British...effects of temperature and bulk-fluid K/Na on the alunitenatroalunite solid solution have been determined...environments, which are characterized by the presence of alunite-bearing alteration zones. Our model is based on...experimental parameters, which indicate that both alunite and natroalunite are stable over this temperature |  | 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...alteration mineral assemblages, with kaolinite, alunite, and silica jaspers. The Miocene history of hydrothermal |  | | Journal (article/letter/editorial) | | California-Vetas mining district. Coeval volcanic rocks are not recognized in the district and volumetrically...multiphase hydrothermal breccia development and quartz-alunite alteration. Stage 3 is defined by presence of copper...and stage 6 by sphalerite. Pyrite, quartz, and alunite are common to all epithermal stages. Residual vuggy...through 5 with some gold introduced during stage 2. Alunite 40Ar/39Ar ages constrain epithermal mineralization...ÎŽ18O and ÎŽD data, alunite was precipitated from magmatic fluids and only stage 6 alunite shows clear evidence |  | Deyell, C.L., Rye, R.O., Landis, G.P., Bissig, T. (2005) Alunite and the role of magmatic fluids in the Tambo high-sulfidation deposit, El IndioâPascua belt, Chile. Chemical Geology, 215 (1) 185-218 doi:10.1016/j.chemgeo.2004.06.038 | Journal (article/letter/editorial) | | (2005) 185 â 218 www.elsevier.com/locate/chemgeo Alunite and the role of magmatic fluids in the Tambo high-sulfidation...T. Bissigc a Mineral Deposit Research Unit, Department of Earth and Ocean Sciences, University of British...Denver Federal Center, Denver, CO, 80225, USA c Department of Geological Sciences and Geological Engineering...Episodic magmatic-hydrothermal activity in the district occurred over at least 4 my and is characterized...barite and alunite within hydrothermal breccias and veins. Isotopic compositions of fluid in alunite show a |  | Pan, Jun-Yi, Ni, Pei, Chi, Zhei, Wang, Wen-Bin, Zeng, Wen-Can, Xue, Kai (2019) Alunite 40Ar/39Ar and Zircon U-Pb Constraints on the Magmatic-Hydrothermal History of the Zijinshan High-Sulfidation Epithermal Cu-Au Deposit and the Adjacent Luoboling Porphyry Cu-Mo Deposit, South China: Implications for Their Genetic Association. Economic Geology, 114 (4) 667-695 doi:10.5382/econgeo.4658 | Journal (article/letter/editorial) | | Economic Geology, v. 114, no. 4, pp. 667â695 Alunite 40Ar/39Ar and Zircon U-Pb Constraints on the M...Institute of Geological Survey, Fuzhou 350013, China Mining Group Co., Ltd., Shanghang 364200, China Abstract...deposit, constitutes a major porphyry-epithermal ore district in South China. Current debate centers on whether...question of importance for exploration in the district. In this contribution, the magmatichydrothermal...Zijinshan and Luoboling is reconstructed based on new alunite 40Ar/39Ar ages from Zijinshan and zircon U-Pb ages |  | Mavrogonatos, Constantinos, Voudouris, Panagiotis, Spry, Paul G., Melfos, Vasilios, Klemme, Stephan, Berndt, Jasper, Baker, Tim, Moritz, Robert, Bissig, Thomas, Monecke, Thomas, Zaccarini, Federica (2018) Mineralogical Study of the Advanced Argillic Alteration Zone at the Konos Hill MoâCuâReâAu Porphyry Prospect, NE Greece. Minerals, 8 (11) 479 doi:10.3390/min8110479 | Journal (article/letter/editorial) | | 15784 Athens, Greece; voudouris@geol.uoa.gr Department of Geological and Atmospheric Sciences, Iowa...Vancouver, BC V6C 2B5, Canada; timb@eldoradogold.com Department of Mineralogy, University of Geneva, CH-1205...ThomasBissig@goldcorp.com Center for Mineral Resources Science, Department of Geology and Geological Engineering, Colorado...Street, Golden, CO 80401, USA; tmonecke@mines.edu Department of Applied Geosciences and Geophysics, University...Zunyite, along with various amounts of quartz, alunite, aluminum phosphateâsulfate minerals (APS), diaspore |  | Wan, Qiu, Cao, Jingya, Li, Yanhe, Du, Jianguo, Duan, Chao, Shi, Ke, Wang, Limin (2022) LAâICP-MS Zircon UâPb and Alunite 39Ar/40Ar Dating of the Saozhouhe Alunite Deposit: Implications for the Metallogenic Significance of the Xiaotian Basin. Minerals, 12 (9) 1122 doi:10.3390/min12091122 | Journal (article/letter/editorial) | | LAâICP-MS Zircon UâPb and Alunite 39Ar/40Ar Dating of the Saozhouhe Alunite Deposit: Implications for...LAâICP-MS Zircon UâPb and Alunite 39 Ar/40 Ar Dating of the Saozhouhe Alunite Deposit: Implications for...Beijing 100037, China Geological Survey of Anhui Province, Hefei 230001, China The Coverage Area Deep Resource...Mesozoic Xiaotian basin hosts a series of gold and alunite deposits. However, the ages of these deposits remain...these deposits. In this work, zircon LAâICP-MS and alunite 39 Ar/40 Ar isotopic dating studies were carried |  | | Journal (article/letter/editorial) | | El Indio) and bulktonnage (e.g., Pascua-Lama, Veladero), high sulfidation epithermal gold ± silver deposits...prospects also occur farther east, in westernmost Argentina, where they were generated in the backarc to the...AL. Potrerillos Bolivia -26°30â ESPERANZA Argentina Chile Antofagasta LA COIPA Fig. 2 PUREN CopiapĂł...Maricunga CASERONES (REGALITO) MARTE PASCUA -LAMA VELADERO EL INDIO -30° -30° El Indio belt LOBO LA PEPA...to 1990 under an option agreement with a Chilean mining entrepreneur. At the same time, Anglo American |  | | Journal (article/letter/editorial) | | 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...C A 26° El Salvador Potrerillos COPIAPĂ ARGENTINA LA SERENA 30° Lineament Fault Porphyry Cu deposit |  | | Journal (article/letter/editorial) | | particularly IS epithermal orebodies in any particular district, irrespective of whether or not paleosurface features...Silicification, vuggy residual quartz, quartz-alunite Quartz, alunite, barite Silicification, quartz-adulariaillite...H2S-bearing steam condensate Opal/chalcedony, alunite, kaolinite, smectite H2S-bearing steam condensate...argillic assemblage comprises powdery opaline silica, alunite, and/or kaolinite (Fig. 4b), depending on solution...alteration peripheral to the La Coipa HS-IS gold-silver district, Chile. f Hydrothermal breccia, generated by shallow-seated |  | Volkov, A. V., Savva, N. E., Sidorov, A. A., Kolova, E. E., Chizhova, I. A., Alekseev, V. Yu. (2015) The Agan epithermal gold-silver deposit and prospects for the discovery of high-sulfidation mineralization in northeast Russia. Geology of Ore Deposits, 57 (1) 21-41 doi:10.1134/s1075701515010067 | Journal (article/letter/editorial) | | during prospecting in the Central Okhotsk ore district of the OkhotskâChukotka volcanogenic belt (OChVB)...epithermal depos its. It was found that quartzâalunite metasomatites in the ore field are characterized...mineralization developed in siliceous and quartzâalunite litho caps, which are formed above degassing intrusions...2011). The extremely rapid growth of world gold mining from HS epithermal deposits in recent years as...others). This structure is located in the Khasyn district of the Magadan oblast, 100 km from Magadan (Fig |  | Sahlström, Fredrik, Dirks, Paul, Chang, Zhaoshan, Arribas, Antonio, Corral, Isaac, Obiri-Yeboah, Matthew, Hall, Chris (2018) The Paleozoic Mount Carlton Deposit, Bowen Basin, Northeast Australia: Shallow High-Sulfidation Epithermal Au-Ag-Cu Mineralization Formed During Rifting. Economic Geology, 113 (8) 1733-1767 doi:10.5382/econgeo.2018.4611 | Journal (article/letter/editorial) | | Ann Arbor, Michigan 48109-1005, USA 3Evolution Mining, Mt. Carlton Operations, Garbutt, Queensland 4814...volcanic and sedimentary rocks, and an open-pit mining operation includes the Au-rich V2 pit in the northeast...silicic cores transition outward to zones of quartz-alunite alteration, which are, in turn, enveloped by a...rift basins. 40Ar/39Ar dating of hydrothermal alunite yielded an age range of 284 ± 7 to 277 ± 7 Ma,...have halos of advanced argillic minerals (e.g., alunite, dickite, kaolinite, pyrophyllite, diaspore, and |  | | Journal (article/letter/editorial) | | quartzâbarite veins have been recognized in the Bulong ore district. These range in length from 15 to 660 m and are...15 to 40 m thick, occur in the Sawayaerdun ore district. These have Triassic to Jurassic KâAr ages of...Stratigraphy The strata exposed in the Bulong ore district belong to the Silurian and Upper Devonian Yimugantawu...Formation is exposed in the central part of the ore district (Fig. 2), represented by a suite of purplish red...barite veins have been recognized in the Bulong ore district, they are defined as Nos. II, III, IV and VII |  | Yang, Fuquan, Mao, Jingwen, Bierlein, Frank P., Pirajno, Franco, Zhao, Caisheng, Ye, Huishou, Liu, Feng (2009) A review of the geological characteristics and geodynamic mechanisms of Late Paleozoic epithermal gold deposits in North Xinjiang, China. Ore Geology Reviews, 35 (2) 217-234 doi:10.1016/j.oregeorev.2008.09.003 | Journal (article/letter/editorial) | | ericite for low-sulïŹdation gold deposits, and aluniteâkaoliniteâ quartz (chalcedony) for high-sulïŹdation...nonmetallic deposits such as sulfur, kaolinite and alunite, which form at shallow depths, with low temperatures...(700 t Au; Kelley and Ludington, 2002), Veladero in Argentina (400 t Au, 6700 t Ag; Jiang et al., 2004)...type Guilaizhuang gold deposit in the Shandong Province (20 t Au, Lin et al., 1995). These deposits occur...Quartz, chlorite, epidote, calcite, ankerite, alunite, pyrophyllite 21â270 m; 0.7â4.1 m S 4â13 (up |  | | Book | | The endsheet maps are reprinted from The Mexican Mining Industry 1890-1950 by Marvin D. Bernstein, by permission...is * CONTENTS Foreword Preface Important Mining Districts Discovery and Developments in MĂ©xico...introduction contains an interesting summary of the mining history and the development of mineralogy. It also...The author discusses eight of the more important mining districts in MĂ©xico, which produce fine mineral...geologists, mineralo- x / Foreword gists, and mining engineers, but also for mineral and gem collectors |
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