The southwestern North America porphyry copper province comprises, in the United States, adjacent parts of Arizona, New Mexico, and far western Texas, and in Mexico, Baja California, Sonora, Sinaloa and Chihuahua; this province is one of the world's great sources of copper …
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.
Porphyry copper deposits of the world. Information on porphyry copper deposits from around the world with grade and tonnage models, a general classification based on geologic setting, mineralogy, with data allowing locations of these deposits to be plotted using GIS.
Porphyry deposits can be divided into three main subtypes: molybdenum porphyry, gold porphyry and copper porphyry. The world's most important sources for copper today are copper porphyry ...
Porphyry copper deposits of the American Cordillera
In the porphyry-epithermal 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 high-temperature, proximal deposits such as porphyry Cu-Au-Mo deposits and Cu-rich skarns.
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. So this gives us a ...
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
This is an ore from a zone of Copper Porphyry which was located in southeastern New Brunswick. The overall grade of the ore was assayed at .35% copper and 600ppb AU or gold. This deposit is actually a project which myself and another prospector have been looking at over the last year.
Porphyry copper deposits represent an important resource and the dominant source of copper that is mined today to satisfy global demand.  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. 
Hydrothermal alteration of the rocks of the Morenci porphyry copper deposit is well described in Lindgren (1905a), Reber (1916), Bennett (1974), Preece, Stegen and Weiskopf (1993), and Walker (1995). Descriptions of the Tertiary volcanic and sedimentary rocks are primarily derived from recent mapping by Ferguson and Enders (this report).
May 28, 2014· 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. While copper is generally the dominant metal ...
Porphyry copper deposits commonly yield molybdenum and silver as co-products, 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.
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.
Carube Copper Corp. has 5700 hectares of copper and gold skarn licences in southern Peru, in the very prospective Andahuaylas-Yauri belt, an emerging porphyry copper province that is host to several producing mining projects. Carube currently holds a interest in 5 licenses covering 207 km2 of highly prospective copper-gold terrain in ...
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 …
Porphyrische Kupferlagerstätten (oder Kupfer-Porphyries, nach englisch porphyry copper deposits oder copper porphyries) sind Kupfer-Lagerstätten, die an Tiefengesteine (Intrusionen) mit einem hohen bis intermediären Gehalt von Siliciumdioxid gebunden sind. Der Name der Lagerstätten ist hierbei leicht irreführend, denn er bezieht sich auf das oftmals porphyrische Gefüge der magmatischen ...
Request PDF | Porphyry copper deposits in China | Porphyry Cu deposits in China contain a total resource of ~47 million tonnes (Mt) Cu at average grades ranging mostly from 0.2 to 0.7% Cu (most ...
Order the 4 hydrothermal alteration zones associated with porphyry copper starting from the core of the deposit. Pottasic zone, Phyllic zone, Argyillic zone, Prophylitic zone. ... precipitation of porphyry ore on cooling-Continued crystallisiation and slow degassing: acid alteration at shallow levels Formation is due to rising magma and fractures.
Porphyry Copper Systems* RICHARD H. SILLITOE† 27 West Hill Park, Highgate Village, London N6 6ND, England Abstract Porphyry Cu systems host some of the most widely distributed mineralization types at convergent plate boundaries, including porphyry deposits centered on intrusions; skarn, carbonate-replacement, and sediment-
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 1,2.They ...
Porphyry Copper Deposits of the World: Database and Grade and Tonnage Models, 2008 By Donald A. Singer, Vladimir I. Berger, and Barry C. Moring 2008. Tonnage of porphyry copper deposits versus average copper grades (from figure 1). This report is an update of earlier publications about porphyry copper deposits (Singer, Berger, and Moring, 2002 ...
Porphyry copper deposits (PCDs) represent shallow level intrusions (2–5 km) in the crust. Mineralization of Cu ores tend to occur at the tops of porphyry systems in cupolas. Possible regimes where Cu may be mobilized include hydrothermal circulation at mid-ocean ridge centers, dehydration or melting of the subducting slab, and late stage ...
Copper, gold, and molybdenum are among the important minerals extracted from these deposits. For modeling purposes a simplified porphyry model was constructed based on known geologic information (Titley, 1982, and Pierce and Bolm, 1995). An idealized porphyry copper system is shown in Fig. 12.12.
Porphyry Cu systems host some of the most widely distributed mineralization types at convergent plate boundaries, including porphyry deposits centered on intrusions; skarn, carbonate-replacement, and sediment-hosted Au deposits in increasingly peripheral locations; and superjacent high- and intermediate-sulfidation epithermal deposits. The systems commonly define linear belts, some many ...
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 …
Mar 15, 2017· Porphyry deposits, suppliers of ~75% of the world's copper and of significant proportions of Mo, Au, Re, are formed in subduction-related magmatic arcs 1 …
Bogdanov, B.D., 1986, Copper ore deposits in Bulgaria, in Petraschek, W.E., and Jankovi?, S., eds., Geotectonic evolution and metallogeny of the Mediterranean area ...
The locations of 88 porphyry and related copper and molybdenum occurrences are shown on a 1:1,000,000-scale topographic base map of Nevada. In addition to porphyry copper the map includes copper skarn deposits, copper-bearing high-level alteration zones, and …
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 fraction of 1 percent copper by weight; although they are low-grade, the ...
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