2020-1-30 · Two deposits named Cerro Casale and Caspiche that are located at a distance of 12km from each other, within the Maricunga Gold Belt of northern Chile, will be mined as part of the project. 6. Carlin Trend gold mine – 12.46Moz
2014-6-27 · Cordillera of northern Chile, are high temperature analogous to Fe-poor stratabound Cu (-Ag) deposits, also known as Chilean manto-type deposits. Both deposit types are hosted in Lower Cretaceous volcanic and volcano sedimentary rocks and are characterized by relatively moderate temperature sodic (-
2012-6-27 · El Morro is a copper-gold development project located in northern Chile, approximately 800 kilometres north of Santiago. Proven and probable gold reserves at Dec. 31, 2011 totaled 5.84-million ...
The Refugio, Aldebarán, and La Pepa districts in the Maricunga belt of northern Chile contain advanced argillic alteration zones that locally host high-sulfidation epithermal gold deposits in proximity to porphyry gold (± copper) deposits. The spatial association suggests a genetic link.
NuevaUnion copper-gold-molybdenum project location, geology, and mineralization. The El Morro part of the project is located within the El Morro Mining District in northern Chile. With an elevation ranging from 4,000m to 4,200m, the deposit lies at the southernmost extension of the Chilean porphyry copper belt of Eocene to Oligocene age.
2020-7-30 · 30 Jul 2020. Engineering and construction firm Fluor has announced that it was given full notice by South African gold miner Gold Fields to move ahead with the Salares Norte open pit gold mine in Chile. Fluor is providing engineering, procurement and construction management services for the project located in the Atacama region of northern ...
2016-11-23 · Mesothermal and Greenstone Gold Deposits AKA Orogenic Geology Formation. Mesothermal gold deposits form half way up through the rise of the melt from the deep crust to the surface usually at a depth of less than 10 km but greater than 1 …
Abstract/Review. The El Dorado Au-Cu deposit is located in an extensive intra-caldera zone of hydrothermal alteration affecting Upper Cretaceous andesites of the Los Elquinos Formation at La Serena (approximate to 29 degrees 47''S Lat., 70 degrees 43''W Long., Chile). Quartz-sulfide veins of economic potential are hosted by N25W and N20E fault ...
2015-10-24 · new gold deposits. The objectives of this paper are to provide an update on gold deposit models, and what new approaches and techniques can now be used to find gold deposits. Gold occurs in a wide range of deposit types and settings, but this paper is concerned with deposits in which gold forms the main economic commodity or a co-product.
The El Dorado Au-Cu deposit is located in an extensive intra-caldera zone of hydrothermal alteration affecting Upper Cretaceous andesites of the Los Elquinos Formation at La Serena (≈ 29°47''S Lat., 70°43''W Long., Chile). Quartz-sulfide veins of economic potential are hosted by N25W and N20E fault structures associated with quartz-illite alteration (+supergene kaolinite).
2017-4-4 · INTERACTIVE MAP: World''s top 10 gold deposits. Fluid ounces. Image: Polyus Gold. To give a true picture of the size and potential of the globe''s largest deposits of gold, MINING and sister ...
The Caspiche porphyry gold-copper deposit, part of the Maricunga gold-silver-copper belt of northern Chile, was discovered in 2007 beneath postmineral cover by the third company to explore the property over a 21-year period.
2020-8-17 · The Escondida copper-gold-silver mine is located in the arid, northern Atacama Desert of Chile about 160km southeast of the port of Antofagasta, at an elevation of 3,050m above sea level.. The mine is a joint venture between BHP-Billiton …
2015-8-20 · With 970,000 troy ounces of gold recovered in 2014, Newmont/Buenaventura''s Yanacocha mine is the leader in HL of gold, followed by Barrick''s Veladero (722,000 troy ounces of gold…
2021-11-1 · Approximately 80 percent of Chilean production comes from porphyry copper deposits rich in molybdenum, gold, and silver byproducts. Most such deposits lie in northern Chile (20º to 26º S). The second-largest source of copper production and reserves are stratabound deposits located primarily on northern coastal areas and parts of central Chile.
2016-1-1 · The data used in this contribution are mainly from a global compilation of well-established IOCG deposits in Williams et al. (2005), Cox and Singer (2007), Porter (2010) and other references shown in Table 1 posits without available gold grades (e.g., Gameleira in Carajás mineral province, Boss-Bixby in Southeast Missouri Iron Province, Vi Kem in North Vietnam and some deposits in Khetri ...
972m grading 0.5% copper and 0.2g/t gold from surface (including 412m grading 0.7% copper and 0.3g/t gold) 750m grading 0.6% copper and 0.2g/t gold from 204m down-hole depth (including 188m grading 0.9% copper and 0.4g/t gold) 848m grading 0.4% copper and 0.2g/t gold from 112m down-hole depth (including 184m grading 0.7% copper and 0.3g/t gold)
2021-7-21 · South America - South America - Precious metals and gemstones: Despite the fact that South America was Europe''s treasure trove for gold and silver from the 1530s through the late 1700s, in the early 21st century the region contributes only a small percentage to the world''s production of these precious metals. Brazil is South America''s leading gold producer, with deposits …
2021-10-26 · Chile - Chile - Mineral resources, noncarboniferous: Mining, historically the mainstay of the Chilean economy, has been a catalyst for both external commerce and domestic industrial development. Copper, molybdenum, iron, nitrates, and other concentrated minerals make up a large part of the total value of national exports. Metals account for the highest percentage of mining exports, copper ...
2019-11-29 · Located in the Atacama region of Chile, Nueva Unión is one of the largest undeveloped copper-gold-molybdenum projects in the Americas. It is a 50/50 joint venture between Teck and Newmont Goldcorp.
2001-8-30 · Porphyry Gold Deposits of the Refugio District, Maricunga Belt, Northern Chile JOHN L. MUNTEAN†,* AND MARCO T. EINAUDI Department of Geological and Environmental Sciences, Stanford University, Stanford, California 94305-2115 Abstract The porphyry gold deposits of the Refugio district and similar deposits in the
2015-12-14 · porphyry deposits lack significant volumes of phyllic or advanced argillic altered rock. Magnetite is an important vein and alteration mineral in the high-grade core of some gold-rich deposits, and can locally comprise up to 10 wt. % (e.g., Grasberg, Irian …
Magmatic-hydrothermal gold deposits of the Maricunga belt, northern Chile. Responsibility John Leon Muntean. Imprint 1998. Physical description xvii, 400 leaves, bound : 2 maps. Digital content. ... Hydrothermal deposits. Ore deposits > Chile > Maricunga Belt. …
2021-3-18 · 1. Escondida, Chile. 1,156 ktonnes. Named after the Spanish for ''hidden'', Escondida is a copper mine located Atacama Desert in Northern Chile and is the world''s largest copper mine by output. Open since 1990, it is one of the deepest open-pit …
1991-10-1 · The Maricunga belt is a linear metallogenic unit defined by at least 14 zones of gold and/or silver mineralization between latitudes 26 degrees and 28 degrees S in the Andean Cordillera of northern Chile. After 10 years of exploration, three precious metal deposits are in production, two more have proven reserves, and others are being drilled.
A porphyry gold deposit has been documented for the first time at Marte in the Maricunga belt of the Andean Cordillera, northern Chile. Exploration conducted from 1981 through 1987 resulted in definition of 66 metric tons of contained gold.
2021-10-24 · Finlay Minerals - Mineral exploration for gold - copper bulk tonnage porphyry deposits in central northern British Columbia, Canada. Fiore Gold - Pan Mine in Nevada as well as a suite of exploration projects in Nevada, Washington and Chile. Fiorentina Minerals is now Gold Basin Resources
2018-2-26 · terrains in the Cordillera of North and South America (Fig. 1) provide a useful framework for examining the diversity of IOCG systems, their regional geologic context, and their relationships to other types of mineral deposits. The Cordilleran region contains thousands of occurrences including a number of deposits that have
2008-10-9 · style copper deposits and includes copper-molybdenum, copper-molybdenum-gold, and copper-gold subtypes that are some-times distinguished by economic geologists (for example, Sillitoe, 2000). A brief discussion of the porphyry copper subtypes is in the Appendix. Associated Deposit Types
2021-10-27 · Latest. October 29, 2021 | Quebec Snapshot: Eight explorers looking for gold and green opportunities; October 29, 2021 | Chile copper output sinks to seven-month low; October 29, 2021 | Anglo American to halve indirect emissions by 2040; October 29, 2021 | Nickel, cobalt allow for cheaper, more efficient green hydrogen production; October 28, 2021 | BMO Financial Group''s David Jacobson …
Gold deposits of approximately the same age in the Yili block include the Axi hot springs/epithermal deposit near the Kazakhstan border and a series of small orogenic gold deposits south of Urumqi (e.g. Wangfeng). Gold-rich porphyry copper deposits (e.g. Tuwu) define important new exploration targets in the northern Tian Shan of Xinjiang.
The world''s biggest gold mines: Top ten
Greg Corbett, Consultant Geologist AIG Presidential Lecture 2001-2002. Click here to download paper as PDF . ABSTRACT. Epithermal gold (± Cu & Ag) deposits form at shallower crustal levels than porphyry Cu-Au systems, and are primarily distinguished …
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