porphyry copper deposit

porphyry copper deposit

Porphyry copper deposit - WikipediaPorphyry 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.Geology of Porphyry Copper Deposits - 911 MetallurgistOct 17, 2017 . Here let's understand the geology of porphyries and iron oxide copper gold deposits or IOCG as they are known. These are somewhat the giants of the ore deposits world. As a mining interested learner, the geology of porphyry copper deposits is vital to your education. Now in the first Exploration Geology.

Porphyry copper deposit | mineralogy | BritannicaPorphyry 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 ore that averages a.porphyry copper deposit,Porphyry Copper Deposit Model, Chapter B of Mineral Deposit .Cover. Photographs of porphyry copper deposits and ores. Upper left: Ray Mine, Arizona, one of the largest porphyry copper deposits in the United States. Upper right: High-grade copper ore from the Ray Mine, Arizona. Chalcopyrite veins cut the. Ray diabase. Sample is about 6.5 centimeters wide. Lower left: Chrysocolla.

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What is a Porphyry Copper Deposit? - Arizona Geological Society

Jan 11, 2014 . Over the last several years, many of you have probably heard the term “porphyry copper” and wondered what everyone is talking about. Porphyry copper deposits are very large mineralized systems that are typically formed by relatively small intrusions (stocks), which are several thousand feet in diameter.

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 to the distribution of gold in the upper crust.

Porphyry copper deposit | mineralogy | Britannica

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 ore that averages a.

Porphyry Copper Deposit Model, Chapter B of Mineral Deposit .

Cover. Photographs of porphyry copper deposits and ores. Upper left: Ray Mine, Arizona, one of the largest porphyry copper deposits in the United States. Upper right: High-grade copper ore from the Ray Mine, Arizona. Chalcopyrite veins cut the. Ray diabase. Sample is about 6.5 centimeters wide. Lower left: Chrysocolla.

porphyry copper deposit,What Investors Need to Know About Porphyry Copper Deposits .

May 4, 2017 . Porphyry copper deposits are among the world's most valuable deposits. Here's a brief overview of a few things investors should know about them.

PORPHYRY DEPOSITS - Earth Science Australia

Introduction Distribution and age. Classification What to look for in the field. Structure Alteration Mineralisation Theory Conclusion. specimen of porphyry copper ore.

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

May 28, 2014 . What is a Porphyry Deposit? The term “Porphyry” comes from the word “Porphyritic”, a textural term used by geologists when describing the mineral pattern within the rocks that commonly occur in copper porphyry deposits. Porphyry Copper deposits play an important role in the global economy.

The formation of porphyry copper deposits | SpringerLink

Copper is a moderately incompatible chalcophile element. Its behavior is strongly controlled by sulfides. The speciation of sulfur is controlled by oxygen fugacity. Therefore, porphyry Cu deposits.

Porphyry copper deposit formation by sub-volcanic sulphur dioxide .

Feb 27, 2015 . Porphyry copper deposits—the primary source of the world's copper—are a consequence of the degassing of intrusion complexes in magmatic arcs associated with ancient subduction zones. They are characterized by copper and iron sulphides, commonly found with anhydrite (CaSO4), over scales of.

Malanjkhand: Proterozoic Porphyry Copper Deposit, M.P. India .

The Malanjkhand porphyry copper deposit is estimated to contain 789 million tonnes averaging 0.83% Cu cut-off-grade of 0.20% Cu, 0.004wt% Mo, 0.2 gm/T Au, 6 gm/T Ag. 448 million tonnes 0.84% Cu (millhead grade) are available for open pit mining to a depth of 100 MRL. The deposit can support a mine, mill, smelter.

Bulletin 64 - Porphyry Copper and Molybdenum Deposits, West .

Bulletin 64 describes porphyry copper and molybdenum deposits in west-central British Columbia that are associated with plutons of Late Cretaceous and Tertiary age that intrude Mesozoic volcanic and sedimentary rocks of the Intermontane Tectonic Belt. The porphyry deposits are contained in an area bounded on the.

THE EVOLUTION OF SUPERGENE ENRICHMENT IN THE .

THE EVOLUTION OF SUPERGENE ENRICHMENT IN THE MORENCI. PORPHYRY COPPER DEPOSIT, GREENLEE COUNTY, ARIZONA by. Merritt Stephen Enders.

Geochronology of the Emplacement, Enrichment, and . - CiteSeerX

IT is difficult to overemphasize that an understanding of the Tertiary geological history is important to mining geologists who concern themselves with ex- ploration for porphyry copper deposits in Arizona. In 1933, the late Dr. Harrison Schmitt stated: ß . . most of the country was attacked by erosion as soon as it was elevated.

Geochronology of the porphyry copper deposits and related .

K–Ar dating demonstrates that all but eight of 41 dated porphyry copper and related ore deposits of Mexico were emplaced during the Laramide episode of maximum plate convergence. One older deposit is related to the Jurassic volcanic arc of western North America, one is pre-Laramide Cretaceous, four are Oligocene in.

Mission pit (Mission Mine [old]; East Pima Mine; Mission Porphyry .

Mission pit (Mission Mine [old]; East Pima Mine; Mission Porphyry Copper deposit), Mission complex, San Xavier, Pima District (Olive District; Mineral Hill District; Twin Buttes District), Sierrita Mts, Pima Co., Arizona, USA : A large surface producer Cu-Ag-Zn-Mo-Pb-Au-Sn-W-Fluorspar-Cd-Sn-W-PGE mine located in.

Fluid Evolution of the Magmatic Hydrothermal Porphyry Copper .

Sep 22, 2013 . The Darrehzar porphyry copper deposit is located ~70 km southwest of Kerman City in the Kerman province of southwestern Iran (Figure 1). The stock is a part of the Sahand-Bazman igneous and metallogenic belt, a deeply eroded Tertiary volcanic field, roughly 100 by 1700 km in extent, consisting mainly.

Studies re-examine how major copper deposits form | EARTH .

Jun 21, 2015 . Every year, the world consumes about 20 million tons of copper primarily for construction materials like electrical wiring and water pipes. Most nonrecycled supplies come from porphyry copper deposits (PCDs), which form when hot, metal-bearing fluids percolate up through Earth's crust. But while.

Generalized Models of Porphyry Copper Deposits - Mirasol .

Mirasol Resources Ltd. 910-850 West Hastings Street. Vancouver, BC. Canada V6C 1E1. (604) 602-9989 .mirasolresources. TSXV - MRZ. For further information contact: Stephen Nano. Generalized Models of Porphyry Copper Deposits: Anatomy, Alteration Zoning and Lithocap. Development.

Porphyry copper deposit - BioMineWiki

Oct 9, 2007 . Porphyry copper deposits are one of the important sources of copper in the world: worldwide average size and grade per deposit about 700Mt containing 0.75% Cu;. A porphyry copper deposit is composed of different layers of copper minerals. Minerals close to the surface are more oxidated than those.

Geochemistry of the Catheart Mountain Porphyry Copper Deposit .

Porphyry Copper Deposit, Maine. Robert A. Ayuso. U.S. Geological Survey. Reston , ia 22092. ABSTRACT. The Ordovician Catheart Mountain pluton is the best example of a porphyry copper system in the New England. Appalachians. It intrudes the Ordovician Attean quartz monzonite in the Proterozoic Chain Lakes.

ORIGIN OF ORE TEXTURES: PORPHYRY COPPER DEPOSITS

Apr 23, 2010 . 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 in the other types of porphyry deposits as well. In this study, 76 polished thin sections were examined in reflected light from 8 porphyry copper.

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