Origin Of Porphery Copper Deposits

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 …

Mantle origin of the Dexing porphyry copper deposit, SE China

The Dexing porphyry copper deposit, part of the circum- Pacific porphyry copper ore belt (Figure 1A), is the largest porphyry copper deposit in China and contains

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

A Plate Tectonic Model for the Origin of Porphyry Copper

A Plate Tectonic Model for the Origin Porphyry Copper Deposits RICHARD H SILLITOE Abstract The theory of lithosphere plate tectonics, embodying the concepts of sea-floor spread- ing, transform faulting, and underthrusting at continental margins and island arcs, is

Porphyry copper deposit | mineralogy | Britannica

…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)

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

Porphyry Copper | Definition of Porphyry Copper by Merriam

Learn More about porphyry copper Share porphyry copper Resources for porphyry copper Time Traveler! Explore the year a word first appeared Dictionary Entries near porphyry copper porphyrous Porphyrula porphyry porphyry copper porphyry shell Porpita porpoise Statistics for porphyry copper

Mineral deposit - Hydrothermal solution | Britannica

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

Preliminary Model of Porphyry Copper Deposits - USGS

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

ORIGIN OF ORE TEXTURES: PORPHYRY COPPER DEPOSITS - Confex

By last count, there are more than 100 porphyry copper deposits in North America, but there is scant information on textures of ore minerals in this type of deposit, or …

Porphyry | Definition of Porphyry by Merriam-Webster

Porphyry definition is - a rock consisting of feldspar crystals embedded in a compact dark red or purple groundmass a rock consisting of feldspar crystals embedded in a compact dark red or purple groundmass; an igneous rock of porphyritic texture…

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 tinIn addition, porphyry deposits may host valuable by-products

Origin of illites at dexing porphyry copper deposit

lation between illite index and copper grade indicates that, within the alteration zone, the smaller the illite crystallinity, the stronger the alteration degree, and the higher the copper grade due to higher water/rock ratio At lower levels of the porphyry body, however, the illite

origin of porphery copper deposits - raftingandcamping

Geology of Porphyry Copper Deposits Understanding Geology of Porphyry Copper Deposits and formations using models around the World Porphyry Copper Deposits are the largest source of Cu/Mo/Au Online service

GEOLOGY AND EVOLUTION OF THE COPPER FLAT PORPHYRY …

The Hillsboro district, in central New Mexico, is an example of the typical geologic style of the development of Laramide porphyry copper deposits in southwestern United States Porphyry copper deposits form from hydrothermal fluids that come from a magmatic source, generally a volcano

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

(PDF) The formation of porphyry copper deposits

The formation of porphyry copper deposits small porphyry copper deposits of Cenozoic age in northern The origin of tin deposits in the Mount Wells Region, Pine Creek Geosyncline

Porphyry Copper Deposits of the American Cordillera

about two-thirds of newly mined copper in the United States Significant quantities of by-product molybdenum, silver, gold, and platinum are also produced This paper presents a brief history of the technological evo­ lution of southwest porphyry copper deposits as bulk low-grade deposits and the evolution of knowledge of their settings, habits,

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 …

The Potential for Porphyry Copper-Molybdenun1 Deposits in

The Potential for Porphyry Copper-Molybdenun1 Deposits The Potential for Porphyry Copper-Molybdenun1 Deposits in the Eastern United States evidence for a subvolcanic origin, and the metal suite provide only a sketchy picture of the whole hydrothermal system,

PORPHYRY DEPOSITS WD SINCLAIR Geological Survey of

Quebec Copper production from porphyry deposits increased rapidly in the 1960s and early 1970s with the development of deposits in British Columbia such as Bethlehem and Lornex in the Highland Valley district, Granisle and Bell Copper in the Babine district, Ingerbelle in the Copper Mountain district, Brenda, Island Copper, and Gibraltar

porphyry copper deposits - YouTube

Aug 29, 2016 · Regional Characteristics of Porphyry Copper Deposits of the Abstract MODEL FOR THE ORIGIN AND DISTRIBUTION OF METALS IN PORPHYRY MODEL FOR THE ORIGIN AND DISTRIBUTION OF METALS IN PORPHYRY

Anatomy of Porphyry-Related Mineralised Au-Cu-Ag-Mo …

deposits benefited from the use of the analogies drawn from the study of geothermal systems, dominantly the back arc rift geothermal systems such as the Taupo Volcanic Zone in New Zealand (Weissberg et al, 1976; Henley and Ellis, 1983)

Exploration of Porphyry Copper Deposits

Exploration of Porphyry Copper Deposits View Larger Image; 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

Porphyry Copper Deposits | Geology for Investors

Porphyry copper deposits are typically very-low grade with between 04 and 1% copper The main mineral is chalcopyrite, which is finely disseminated through the host porphyritic rocks The only reason these ore bodies are economic is because porphyries are huge, with hundreds of millions of tonnes available in a fairly low-cost mining setting

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

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 Since 1970, more than 95 percent of the U S copper production has been derived from porphyry copper deposits

Origin of porphyry copper ore shells – Fluids and Mineral

Origin of porphyry copper ore shells Main content ETH Life article How ore deposits are formed References Weis, P Driesner T, Heinrich C A (2012), Porphyry-Copper Ore Shells Form at Stable Pressure-Temperature Fronts Within Dynamic Fluid Plumes, Science, 338, 1613-16,

Geology, geochronology, geochemical characteristics and

Geology, geochronology, geochemical characteristics and origin of Baomai porphyry Cu (Mo) deposit, Yulong Belt, Tibet Porphyry copper deposits are generally located in island and continental arc settings in association YQ Ma, GR Wang, WJ QuNarigongma porphery molybdenite copper deposit, northern extension of Yulong copper belt

Formation of Porphyry Copper Deposits

Stephen J Reynolds, Dept of Geology, Arizona State University

Gold in porphyry copper deposits: its abundance and fate

Porphyry copper deposits are among the largest reservoirs of gold in the upper crust and are important potential sources for gold in lower temperature epithermal deposits Whether gold remains in porphyry copper deposits is important both to their economic attractiveness and …

Porphyry (geology) - Wikipedia

Porphyry deposits are formed when a column of rising magma is cooled in two stages In the first stage, the magma is cooled slowly deep in the crust, creating …

Ely, Porphyry copper deposit - USGS

Einaudi, MT, 1982, Description of skarns associated with porphyry copper plutons, southwestern North America, in Titley, SR, ed, Advances in geology of the

Geology and porphyry copper-type alteration-mineralization

The Christmas copper deposit, located in southern Gila County, Arizona, is part of the major porphyry copper province of southwestern North America Although Christmas is known for skarn deposits in Paleozoic carbonate rocks, ore-grade porphyry-type copper mineralization also occurs in a composite granodioritic intrusive complex and adjacent mafic volcanic country rocks

Cananea, Porphyry copper deposit - USGS

Barton, MD, Staude, J-MG, Zürcher, L, and Megaw, PKM, 1995, Porphyry copper and other intrusion-related mineralization in Mexico, in Pierce, FW, and Bolm

Thomson Resources - Porphyry Copper Gold Deposit Model

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

Geophysical Case History of North Silver Bell, Arizona: a

The Silver Bell district is within the porphyry-copper province of southwestern North America, located 35 miles northwest of Tucson, Arizona on the south side of the Silver Bell Mountains Mineralization in the district consists of at least three distinct disseminated porphyry copper deposits and several skarn replacement deposits

Preliminary model of porphyry copper deposits - USGS

Periodic updates of models are published in order to incorporate new concepts and findings on the occurrence, nature, and origin of specific mineral deposit types This update is a preliminary model of porphyry copper deposits that begins an update process of porphyry copper models published in USGS Bulletin 1693 in 1986

Porphyry Copper Deposit | Economic Geology | Minerals

Porphyry copper deposits are typically mined by open-pit methodssericite alteration zone typically occurs closer to the center and may overprintchlorite mineral alteration zone [edit] Examples of porphyry copper deposits where they precipitate The deposits typically have an outer epidote or by quartz veins with sulfides

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