Porphyry Copper Gold Deposits

to many porphyry copper deposits (for example, Bingham, Utah), as well as crosscutting porphyry-style mineralization (for example, Valea Morii, Romania). Primary Commodities Copper is the primary commodity of economic interest in most porphyry copper deposits, although some deposits with low

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Porphyry deposits are one of the most important sources of copper and molybdenum, and are also major sources of silver, gold, and tin.In addition, porphyry deposits may host valuable by-products ...

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Porphyry copper deposits are copper orebodies that are formed from hydrothermal fluids that originate from a voluminous magma chamber several kilometers below the deposit itself. Predating or associated with those fluids are vertical dikes of porphyritic intrusive rocks from which this deposit type

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Porphyry Copper, Gold, and Molybdenum Deposits: Preface . ... Porphyry deposits are the world’s principal resources of Cu, Mo, and Re, and are major resources of Au and Ag. Since 1905, more than 700 articles concerning porphyry deposits have been published by the Society of Economic Geologists in its various publications (Economic Geology,

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Nov 08, 2019· Gold is found in porphyry copper deposits in solid solution in Cu–Fe and Cu sulfides and as small grains of native gold, usually along boundaries of bornite… bornite and chalcopyrite can ...

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About Libero Copper & Gold. Libero holds a collection of porphyry deposits throughout the Americas in prolific but stable jurisdictions. The portfolio includes both exploration properties such as Big Red, a new gold discovery in the Golden Triangle, Canada, and high-quality deposits with significant resources but without any fatal flaws or ...

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Aug 19, 2019· Exploradora North exhibits excellent targets, both geologically and geophysically, for discovering and delineating a porphyry copper-gold deposit in …

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porphyry gold deposits at Refugio in the Maricunga belt con-tain the lowest known copper:gold ratios of any porphyry-type deposit, and previous studies have established their similari-ties to gold-rich porphyry copper deposits (Vila and Sillitoe, 1991; Vila et al., 1991). One of …

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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. Mineralized zones are characterized by four main vein types that formed at …

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So how do we explore for Porphyry Copper Deposits which are completely covered by barren younger rocks? Well let’s back up a bit, we know that porphyries form under large subduction related volcanoes and that most of these are located under the ring of fire around the subducting pacific plate another fertile subduction zone occurs in Balkans, Turkey, Iran and Pakistan.

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Although copper has been mined from a number of different types of mineral deposits, porphyry copper deposits are the most important source for copper, accounting for more than 60 percent of the annual world copper production and approximately 65 percent of the known total copper resource.

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Jul 12, 2019· Liberty Gold Announces Receipt of US$4,000,000 and Amended Definitive Agreement to Sell the Halilağa Porphyry Copper Gold Deposit in Turkey. November 12, 2019

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Iron oxide copper gold ore deposits (IOCG) are important and highly valuable concentrations of copper, gold and uranium ores hosted within iron oxide dominant gangue assemblages which share a common genetic origin. These ore bodies range from around 10 million tonnes of contained ore, to 4,000 million tonnes or more, and have a grade of between 0.2% and 5% copper, with gold contents …

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When it comes to porphyry deposits there are a number of variations on a theme and the deposits can be copper only, they can be copper gold, copper molybdenum or molybdenum only but regardless of the metal mix the process of deposit formation is the same.

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Jun 14, 2019· Learn how to Find Rich Gold Deposits in Porphyry , we are going to be talking about that in great depth and the associated Geology with Porphyry, Copper Porphyry, Skarn, ( Polymetallic replacement ...

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Porphyry Copper Gold Deposit Model Porphyry deposits are the world's most important source of Cu and Mo, and are major sources of Au, Ag, and Sn. They account for about 50 to 60% of world Cu production and more than 95% of world Mo production.

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The Josemaría porphyry copper-gold deposit is located in the Frontal Cordillera of San Juan Province, Argentina, near the present-day northern limit of the Chilean-Pampean flat-slab segment of the central Andes, and midway between the Maricunga and El Indio metallogenic belts.

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Based on a synthesis of theoretical, experimental, and field data, a variation on the classic porphyry Cu model is proposed to explain the formation of reduced porphyry Cu-Au deposits and their relatively Cu-poor but Au-rich nature. The proposed reduced porphyry Cu-Au model does not contradict the current understanding of porphyry Cu-Au formation.

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Anonymous, 1973b, Yugoslavia s Krivelj project: Mining Magazine, May, p. 342 353.

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20.6.13.1 Copper–gold–molybdenum porphyry deposits. Copper porphyry deposits are significant sources of copper, molybdenum, gold, and silver. Till geochemistry is an important exploration tool for these deposits as demonstrated in several studies and regional till surveys ...

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2.4 Iron oxide copper-gold mineral system; ... Mineral deposits of the porphyry-epithermal mineral system are associated with magmatism that generally, although not exclusively, is associated with magmatic arcs within convergent geodynamic settings. ... Cadia Hill open cut mine, an example of porphyry copper–gold deposits. Image: Alan Whitaker.

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Gold abundances in porphyry copper deposits vary greatly, complicating efforts to define gold-rich porphyry copper deposits. The original definition was based on the Au/Mo ratios of porphyry copper deposits with no reference to their copper content , and resulted in the suggestion that gold-rich deposits were found largely in island arc regions (Kesler, 1973).

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Porphyry copper-gold deposits form in a variety of volcanic environments, most commonly in continental margins and intra-oceanic arcs. These are large scale magmatic-hydrothermal systems associated with a series of porphyritic intrusions, which result in extensive alteration footprints that we map and model to target high grade copper-gold mineralization.

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The major products from porphyry copper deposits are copper and molybdenum or copper and gold. The term porphyry copper now includes engineering as well as geological considerations; It refers to large, relatively low grade, epigenetic, intrusion-related deposits that can be mined using mass mining …

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The first mining of low-grade copper porphyry deposits from large open pits coincided roughly with the introduction of steam shovels, the construction of railroads, and a surge in market demand near the start of the 20th century. Some mines exploit porphyry deposits that contain sufficient gold or molybdenum, but little or no copper.

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Jul 12, 2019· ABOUT LIBERTY GOLD. Liberty Gold will continue to own 60% of the TV Tower project in the Biga Province that contains a large number of exploration targets ranging from high-sulphidation and low-sulphidation epithermal gold-silver and three drill confirmed porphyry copper-gold discoveries.

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Mar 11, 2015· Porphyry deposits are very large, polymetallic systems that typically contain copper along with other important metals. Much of today’s mineral production depends on porphyries: 60% of copper, 95% of molbdenum, and 20% of gold comes from this deposit type. Porphyries are most commonly found along ...

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PORPHYRY COPPER-GOLD EXPLORATION - Short Course Manual Greg Corbett Incomplete DRAFT as at February 2018 www.corbettgeology.com. Corbett Short Course Manual SUMMARY This short course manual considers field aspects of epithermal and porphyry ore deposits as an aid to mineral exploration. The classification of ore systems used here allows ore and ...

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This report contains a revised descriptive model of porphyry copper deposits (PCDs), the world’s largest source (about 60 percent) and resource (about 65 percent) of copper and a major source of molybdenum, gold and silver.

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Major miners look to copper porphyry deposits for large-tonnage, low-cost operations. We take a look at what makes for a copper porphyry takeover target. Ask any economic geologist the most ...

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