porphyry copper deposit

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PORPHYRY DEPOSITS Earth science

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, intrusionrelated deposits …

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Porphyry copper deposit density

Porphyry copper deposit density is inversely related to the exposed area of permissive rock. The linear regression line and confidence limits constructed with the 19 control areas can be used to estimate the number of undiscovered deposits, given the size of a permissive area.

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Tombulilato, Porphyry copper deposit USGS

Porphyry copper: Deposit subtype: CuAu: Age (Ma) Ma: Age determination method: KAr biotite: Age range: ± to ± Ma: ... and Kirkegaard, , 1985, Porphyry coppergold deposits of the Tombulilato district, North Sulawesi, Indonesia An extension of the Philippine porphyry coppergold province, in Asian Mining 85 ...

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Porphyry copper deposit Infogalactic: the planetary ...

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 derives its name. In later stages, circulating meteoric fluids may interact with the magmatic ...

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HYPOGENE ALTERATION AND MINERALIZATION IN THE DOS …

Mexico. This region is richly endowed with porphyry Cu(Mo) deposits, yet Dos Pobres, one of at least four porphyry deposits in the Safford district (Langton and Williams, 1982), represents one of the few porphyry Cu(AuMo) deposits, a distinctive family of porphyry deposits that are commonly associated with relatively mafic intrusive rocks

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Mineral deposit Hydrothermal solution |

Porphyry deposits. Among the most distinctive hydrothermal deposits is a class known as porphyry copper deposits, so called because they are invariably associated with igneous intrusives that are porphyritic (meaning the rock is a mixture of coarse and fine mineral grains).Porphyry copper deposits (and their close relatives, porphyry molybdenum deposits) contain disseminated mineralization ...

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Geology of the Josemaría Porphyry CopperGold Deposit ...

The Josemaría porphyry coppergold deposit is located in the Frontal Cordillera of San Juan Province, Argentina, near the presentday northern limit of the ChileanPampean flatslab segment of the central Andes, and midway between the Maricunga and El Indio metallogenic belts.

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porphyry copper deposit at El Salvador, Chile | Economic ...

The formation of the porphyry copper deposit at El Salvador culminated volcanic activity in the Indio Muerto district. Host rocks for the ore are Cretaceous andesitic flows and sedimentary rocks overlain unconformably by lower Tertiary volcanics.

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Porphyry copper deposit | mineralogy |

Porphyry copper deposit: Porphyry copper deposit, large body of rock, typically a porphyry of granitic to dioritic composition, that has been fractured on a fine scale and through which chalcopyrite and other copper minerals are disseminated. Porphyry copper deposits commonly contain hundreds of millions of metric tons of

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Porphyry Copper, Gold, and Molybdenum Deposits: Preface ...

Porphyry Copper, Gold, and Molybdenum Deposits: Preface . EDITOR: DAVID R. COOKE. CODES – The Australian Research Council’s Centre for Excellence in Ore Deposit Research, University of Tasmania, Private Bag 126, Hobart, Tasmania 7001, Australia . Porphyry deposits are the world’s principal resources of Cu, Mo, and Re, and are major

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Porphyry Deposits: The World's Largest Source of Copper ...

Porphyry copper deposits are generally composed of a “pluglike” igneous intrusion – a large magma body that is emplaced beneath a volcanic system. On average these deposits can have a vertical and horizontal extent of 12 km and can range from tens of millions to a billion+ tons in size.

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What Investors Need to Know About Porphyry Copper Deposits ...

Porphyry deposits are one of the most important sources of copper and molybdenum, and are also major sources of silver, gold, and addition, porphyry deposits may host valuable byproducts ...

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What Makes for a Copper Porphyry Takeover Target

Major miners look to copper porphyry deposits for largetonnage, lowcost operations. We take a look at what makes for a copper porphyry takeover target. Ask any economic geologist the most ...

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Porphyry copper deposit Wikipedia

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 derives its name. In later stages, circulating meteoric fluids may interact with the magmatic ...

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Porphyry copper deposit | Wiki | Everipedia

Porphyry copper deposit's wiki: 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 derives its name.

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Porphyry Copper Flashcards | Quizlet

Start studying Porphyry Copper. Learn vocabulary, terms, and more with flashcards, games, and other study tools.

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(PDF) The formation of porphyry copper deposits

In the Iju deposit, a small porphyry copper deposit, the oceanic slab was slightly hydrated and minor water was released at the depth of 110–130 Km. A small volume of magma was formed due to ...

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Geology of Porphyry Copper Deposits

A different but closely related group of deposits to Porphyry Copper Deposits are the skarn deposits. Skarns are formed when hot magma intrudes the limestone the fluids from the intrusive alter the limestone to form an exoskarn. The intrusives also simulates the limestone altering its composition and forming and endo skarns.

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Porphyry Copper Deposits | Geology for Investors

Most of the world’s copper is extracted from a type of mineral deposit called a “porphyry copper”. If you’ve seen a picture of a great big openpit mining operation odds are that it was a porphyry copper deposit. Some of the biggest manmade holes in the ground are porphyry copper mines: Bingham Copper Mine, Utah, and Chuquicamata in Chile, and two of the largest.

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Gold in porphyry copper deposits: its abundance and fate ...

Gold abundances in porphyry copper deposits vary greatly, complicating efforts to define goldrich 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 goldrich deposits were found largely in island arc regions (Kesler, 1973).

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Porphyry copper deposit IPFS is the Distributed Web

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 derives its name. In later stages, circulating meteoric fluids may interact with the magmatic ...

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Exploration of Porphyry Copper Deposits

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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Porphyry Copper Deposit Model USGS

Sep 02, 2010· 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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Porphyry (geology) Wikipedia

The term porphyry is also used for a mineral deposit called a "copper porphyry". The different stages of cooling that create porphyritic textures in intrusive and hypabyssal porphyritic rocks also lead to a separation of dissolved metals into distinct zones.. This process, which occurs primarily when fluids are driven off the cooling magma, is one of the main reasons for the existence in the ...

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Preliminary Model of Porphyry Copper Deposits USGS

to many porphyry copper deposits (for example, Bingham, Utah), as well as crosscutting porphyrystyle 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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GEOLOGY AND EVOLUTION OF THE COPPER FLAT PORPHYRY …

The Copper Flat porphyry copper deposit in the northern part of the Hillsboro district was discovered in 1975 (Castellano et al., 1977; Dunn, 1982, 1984), although alteration and mineralization in the area suggested to earlier geologists that a porphyry copper deposit should occur …

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King Copper | AZGS

Porphyry copper deposits commonly yield molybdenum and silver as coproducts, were. The intrusive activity responsible for Arizona's porphyry copper deposits occurred about 70 million years ago, in the Earth's crust deep below the ground surface. The rich metal deposits were subsequently exposed millions of years later by faulting and erosion.

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What is a Porphyry Copper Deposit?

porphyry copper deposits were the first type of metallic mineral deposit to be exploited by largescale, bulk tonnage, open pit mining methods. Economies of scale and advances in technology have made it possible to profitably mine these deposits despite their relatively low ore grades.

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PorphyryEpithermal Transition: Maricunga Belt, Northern …

A spectrum of porphyrystyle deposits exists. Cerro Casale at Aldebarán shares many characteristics of porphyry copper deposits worldwide, whereas Verde at Refugio is a true porphyry gold deposit. Potassic alteration zones and Aveinlets are strongly developed at Cerro Casale, whereas they are absent at Verde. Banded quartz

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(PDF) Porphyry Copper Deposit Model ResearchGate

PDF | 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 ...

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Erdenet, Porphyry copper deposit USGS

Erdenet, a site known since prehistoric time, was recognized as a major copper deposit in 1941, intensively explored during the 1960s, and began production in 1978. Elongate (NW SE) mineralized zone in Selenge Intrusive Complex.

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Everything You Need to Know About Copper Porphyries ...

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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Porphyryepithermal mineral system | Geoscience Australia

In the porphyryepithermal mineral system, pathways for fluids and their contained metals, ligands and sulfur include faults, stratigraphic aquifers and crystallising intrusive bodies. Crystallising intrusions are particularly important pathways for hightemperature, proximal deposits such as porphyry CuAuMo deposits and Curich skarns.

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