porphyry copper deposits

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Porphyry copper - Revolvy

Jul 06, 2013· Porphyry copper deposits represent an important resource and the dominant source of copper that is mined today to satisfy global demand. [5] Via compilation of geological data, it has been found that the majority of porphyry deposits are Phanerozoic in age and were emplaced at depths of approximately 1 to 6 kilometres with vertical thicknesses on average of 2 kilometres. [5]

(PDF) The formation of porphyry copper deposits

Porphyry ore deposits are the source of much of the copper, molybdenum, gold and silver used by humans. Porphyry ore typically forms in magmatic arcs above subduction zones.

Porphyry molybdenum deposit | mineralogy | Britannica.com

Other articles where Porphyry molybdenum deposit is discussed: mineral deposit: Porphyry deposits: …deposits (and their close relatives, porphyry molybdenum deposits) contain disseminated mineralization, meaning that a large volume of shattered rock contains a ramifying network of tiny quartz veins, spaced only a few centimetres apart, in which grains of the copper ore minerals chalcopyrite ...

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.

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.

Porphyry (geology) - Wikipedia

Collectively, these type of deposits are known as "porphyry copper deposits". Rhomb porphyry. Rhomb porphyry is a volcanic rock with gray-white large porphyritic rhomb-shaped phenocrysts embedded in a very fine-grained red-brown matrix. The composition of rhomb porphyry places it in the trachyte–latite classification of the QAPF diagram.

Porphyry copper deposit | Revolvy

Porphyry copper deposit Bingham Canyon mine in 2005. The gray rocks visible in the pit are almost all in the primary-sulfide ore zone. 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 ...

Porphyry copper deposit | mineralogy | Britannica.com

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

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, intrusion-related deposits …

What is a Porphyry Copper Deposit? - …

porphyry copper deposits were the first type of metallic mineral deposit to be exploited by large-scale, 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.

What is a Porphyry Copper Deposit? by David F. Briggs on ...

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.

Porphyry Deposits 101 – Doubleview Capital Corp.

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.

Porphyry Copper Flashcards | Quizlet

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

Porphyry Copper Deposits - mingeoch.uni-jena.de

Porphyry Copper Deposits This text is based mostly on the Economic Geology Notes by Ron Morton and the review of porphyry-copper deposits by Sillitoe (2010). The latter publication is exhaustive and is available through the ThULB in Jena. Definition: Porphyry copper deposits are large tonnage, low-to medium-grade deposits in which

Why No Porphyry Copper Deposits in Japan and South Korea ...

Antonio Arribas and Toshio Mizuta, Potential for Porphyry Copper Deposits in Northern Tōhoku (or the Exploration Potential for Base and Precious Metal Deposits in Japan 2020), Resource Geology, 68, 2, (144-163), (2018).

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

Porphyry copper deposits are among the world's most valuable deposits. Here's what investors should know about them. Approximately 50-60 percent of the world's copper, and 95 percent of ...

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

Mutschler et al., 1981; Wallace, 1991. Because some porphyry Mo deposits contain significant W, the few papers that document Mo-W and W porphyry deposits are also provided in this subsection. Breccias associated with porphyry copper deposits have been a …

Geology of Porphyry Copper Deposits

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.

Grasberg, Porphyry copper deposit

Potter, D., 1996, What makes the Grasberg anomalous, implications for future exploration, in Porphyry related copper and gold deposits of the Asia Pacific region: Conference Proceedings, Australian Mineral Foundation, Glenside, South Australia, p. 10.1 10.13.

(PDF) Distribution of gold in porphyry copper deposits

PDF | Analysis of 55 porphyry copper deposits demonstrates a continuum between porphyry copper-gold deposits emplaced at a median depth of 1 km, with a median size of 160 million metric tons of ...

Preliminary Model of Porphyry Copper Deposits - USGS

Copper skarn deposits occur near many porphyry copper host intru- sions that intruded carbonate-bearing units (Einaudi and others, 1981), and skarn mineral zoning patterns may be useful in the targeting of a potentially associated porphyry copper deposit (Meinert and others, 2005).

Types of Copper Deposits in the World | Investing News Network

Here's a brief overview of five things that are important to think about when finding the value of a copper deposit. 1. Types of copper deposits. Porphyry copper deposits are low grade, but are ...

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(-Au-Mo) deposits, a distinctive family of porphyry deposits that are commonly associated with relatively mafic intrusive rocks

Triggers for the formation of porphyry ore deposits in ...

Oct 13, 2013· Porphyry ore deposits are the source of much of the copper, molybdenum, gold and silver used by humans. Porphyry ore typically forms in magmatic arcs above subduction zones. However, generation of ...

Rio Tinto on the lookout for BC porphyry deposit | MINING.com

Now the second largest mining company in the world is hoping to add a BC copper porphyry deposit to its portfolio of development properties. Rio Tinto's (ASX, LON:RIO) Chris Welton said the ...

Porphyry copper deposit density - pubs.er.usgs.gov

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.

Porphyry Copper Deposits of the American Cordillera

A tabulation of grade and tonnage of porphyry copper ores of the region has been published by Gilmour (1982) and sum­ marized by Titley and Anthony (1989) and Titley (1994). Re­ serves in 1989 have been listed by Beard (1989). Production figures summarized for 45 porphyry copper deposits in the

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 ...

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 …

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

Porphyry copper deposits are generally composed of a "plug-like" 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 1-2 km and can range from tens of millions to a billion+ tons in size.