Characteristics and controls of the largest porphyry ... · Eleven gold‐rich porphyry copper and 14 epithermal gold deposits around the Pacific rim contain > 200 t (‐7 million oz) of gold. These large porphyry‐type deposits conform to a single overall model, whereas the large epithermal gold deposits are varied in both genetic type and mineralisation style. Most regional and local characteristics of the largest porphyry and epithermal deposits ...
Why No Porphyry Copper Deposits in Japan and South Korea ...Why No Porphyry Copper Deposits in Japan and South Korea? Richard H. SILLITOE London, UK Abstract This analysis concludes that there is little realistic likelihood of discovering large, highgrade porphyry Cu deposits in Japan and South Korea because of an unusual combination of geological factors. First, weak interplate coupling, trench retreat, and extension – a tectonic regime ...
Chapter 7 ByProducts of Porphyry Copper and Molybdenum ...Porphyry Copper and Molybdenum Deposits General description Porphyry Cu deposits and encompassing porphyry Cu systems are the subject of extensive ongoing research, and many aspects of these systems are discussed in recent summary papers that include Sillitoe (2000, 2005, 2010), Tosdal and Richards (2001), Richards (2003, 2009, 2011), Cooke et al.
A clustering approach for mineral potential mapping: A ...A deposit scale mineral prospectivity analysis: A comparison of various knowledge–driven approaches for porphyry copper targeting in Seridune, Iran. Journal of African Earth Sciences, 128: 127–146.##
Geostatistics for the Mining Industry: Appliions to ... · Despite focusing on copper porphyry deposits, the generalization of the methods presented to the entire mining industry is straightforward. The broad range of problems addressed, including generally neglected disciplines such as geotechnics, geometallurgy and sampling, and their practical presentation make this book unique and usable by a very wide audience – students, .
Generation of postcollisional porphyry copper deposits in ...Oligocene to Miocene postcollisional porphyry Cu deposits in the Gangdese belt in southern Tibet contain total resources of >20 million metric tons (Mt) Cu and are genetically associated with granodioriticquartz monzogranitic porphyry intrusions with adakitelike signatures (, Sr/Y >40). The adakitelike magmatic rocks in the southern subbelt of the eastern Gangdese belt (east of 87° E ...
World Copper Ltd.: World Copper Confirms Two Porphyry ... · Surface sampling programme confirms two copperporphyry targets and one skarn target to the northeast of the main Escalones deposit. The Rio .
Geology and origin of the Zhunuo porphyry copper deposit ... · The Zhunuo porphyry copper deposit in the Gangdese belt of southern Tibet contains Mt at % Cu. In this deposit, Eocene rhyolite ( ± Ma) and quartz porphyry ( ± Ma) were intruded by monzogranite ( ± Ma) and monzogranite porphyry ( ± Ma) which commonly host mafic microgranular enclaves ( ± Ma). Latemineralization diorite porphyry .
Neoproterozoic Jebel Ohier Porphyry Copper Deposit | CSA ... · The Jebel Ohier porphyry copper deposit bears many similarities to well documented Phanerozoic analogues elsewhere in terms of (1) the mapped style and zonation of hydrothermal alteration (, proximal Ksilie–dominated, to sericitic, to distal propylitic alteration), (2) the occurrence of intense Cubearing A and Btype vein stockwork, as well as sulfideonly Ctype veins, anhydrite ...
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 loed under the ring of fire around the subducting pacific plate another fertile subduction zone occurs in Balkans, Turkey, Iran and Pakistan.
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. Bingham Canyon, Salt Lake County, Utah (Photo taken by Ken Krahulec, July 2005). Over the last century ...
Super Porphyry Cu Au DepositsPorphyry Copper Deposits of the UrumiehDokhtar Magmatic Arc, Iran. Robin Armstong, The Natural History Museum, London, UK, Dejan Kozelj, formerly RTB Bor, Bor, Serbia and Richard Herrington, The Natural History Museum, London, UK. Abstract: The Majdanpek Porphyry CuAu Deposit of Eastern Serbia: A Review. Reimar Seltmann, Centre for Russian and Central EurAsian Mineral Studies .
Porphyry Deposits | Economic Geology | ChemistryPorphyry Deposits. The Importance of Porphyry Deposits as a Copper and Gold Resource. Gold Resources Copper Resources A Geological Cross Section through the Batu Hijau Porphyry Deposit, Indonesia (920 million tons of ore grading wt.% Cu, g/t Au) Batu Hijau Porphyry CuAu Deposit, Indonesia Batu Hijau Porphyry CuAu Deposit, Indonesia ...
Porphyryepithermal mineral system | Geoscience AustraliaCadia Hill open cut mine, an example of porphyry copper–gold deposits. Image: Alan Whitaker. Fluid pathways. 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 ...
Minerals | Free FullText | Using Whole Rock and Zircon ...Eastern Tianshan hosts a number of porphyry Cu deposits. However, these mainly formed in the Jueluotage Belt, in the middle part of Eastern Tianshan. The Tonggou porphyry Cu mineralization is an exception to this, since it is loed in the Bogda Orogenic Belt, north of Eastern Tianshan. We obtained new zircon UPb ages, wholerock geochemical data, zircon Hf isotope data, and zircon trace ...
PORPHYRY DEPOSITSPlutonic porphyry copper deposits occur in batholithic settings with mineralization principally occurring in one or more phases of plutonic host rock. Intrusions Associated with PorphyryCopper Deposits Intrusions associated with, porphyry copper deposits arediverse but generally felsic and differentiated. Those in island arc settingshave primitive strontium isotopic ratios (87Sr/86Sr of ...
Porphyry Deposits: General characteristics and modeling ...Porphyry copper deposits are typically formed in a continental arc and island arc settings along the Pacific Ring of Fire – the west coast of North and South America to the Eastern portions of Asia. PORPHYRY MODEL. Porphyry Cu Systems Granitic cupola at 310 km depth Hydrothermal alteration ores at 1 to >6 km depth Central high sulfide metals Increasing low pH, high fS2 alteration upward ...
CAVU Mining (CSE:CAVU) Announces Porphyry Copper Discovery ... · CAVU Mining (CSE:CAVU), a junior copper exploration company in Canada, has a mission statement of "Creating Value Through Exploration". The company...
Gold Distribution in Porphyry Copper Deposits of Kerman ...in porphyry copper deposits is controlled by factors such as tectonic setting, depth of emplacement, and the oreforming fluid characteristics [16,1012].These factors along with other characteristics such as the ore tonnage, morphology, and the age of the ore deposits have been used to distinguish between different types of porphyry copper deposits ( porphyry CuMo, and porphyry CuAu ...
Porphyry Copper Systems1 | Economic Geology | GeoScienceWorld · Porphyry Cu ± Au ± Mo deposits are centered on the intrusions, whereas carbonate wall rocks commonly host proximal CuAu skarns, less common distal ZnPb and/or Au skarns, and, beyond the skarn front, carbonatereplacement Cu and/or ZnPbAg ± Au deposits, and/or sedimenthosted (distaldisseminated) Au deposits. Peripheral mineralization is less conspicuous in noncarbonate wall .
Porphyry Deposits | PDF | Geology | Economic GeologyPorphyry Deposits as a Copper and Gold Resource Gold Resources Copper Resources A Geological Cross Section through the Batu Hijau porphyry deposit, Indonesia (920 million tons of ore grading 0. Wt.% cu, 0. G / t au) Supergene Malachite Spatial Distribution of Porphyry Deposits The Origin of Porphyry CuAuMo Magmas Hydration Melting Porphyryepithermalskarn system overview.
Porphyry Copper Deposits in the ... · Porphyry Copper Deposits . Geologists estimate that until 2,000 BC, copper grades in mining were around 15%. Some 3,500 years later, the mining grades were around 9%. Around 1800, the grades stood at 67% and mines successfully operated with such grades until the beginning of the 20 th century. At the end of the 19th century, the Bingham Canyon Mine in Utah (USA) began with the .
Porphyry Copper Deposit ModelPorphyry Copper Deposit Model By David A. John, editor, with contributions by Robert A. Ayuso, Mark D. Barton, Richard J. Blakely, Robert J. Bodnar, John H. Dilles, Floyd Gray, Fred T. Graybeal, John C. Mars, Darcy K. McPhee, Robert R. Seal, Ryan D. Taylor, and Peter G. Vikre Chapter B of Mineral Deposit Models for Resource Assessment . This report contains a revised descriptive model of ...
(PDF) Porphyry depositsporphyry copper deposits, such as Bingham and Bajo de la. Alumbrera, sulphide deposition was primarily due to cooling. of metalrich, saline brines below 400ºC (Ulrich et al., 2001; Redmond et al ...