Combination Crusher

Combination Crusher

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porphyry copper deposit model - usgs

This report contains a revised descriptive model ofporphyry copper deposits(PCDs), the world’s largest source (about 60 percent) and resource (about 65 percent) ofcopperand a major source of molybdenum, gold and silver. Despite relatively low grades (average 0.44 percentcopperin 2008), PCDs have significant economic and societal impacts

gold in porphyry copper deposits: its abundance and fate

Oct 01, 2002· Porphyry copper deposits areamong 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

geology of porphyry copper deposits southwestern north

Hardcover Book: Geology of ThePorphyry Copper Deposits- Southwestern North America, by; Titley & Hicks Measures 12" x 9" - 287 pages - Dated 1966, by; Edited By; Spencer R. Titley & Carol L. Hicks - University of Arizona Press

basics ofcopper porphyry depositsfor investors

Oct 21, 2020· The ore incopper porphyry depositsis usually located between the potassic and phyllic alternations. There is a pyrite halo surrounding the ore. Chlorite, calcide, epidote, and adularia are

porphyry deposits: the world’s largest source ofcopper

Nov 21, 2019·Copperin thesedepositsgenerally occurs incopper-iron sulfide minerals such as chalcopyrite (CuFeS 2) and bornite (Cu 5 FeS 4). Brassy-yellow Chalcopyrite is the primarycopper-bearing mineral inPorphyry deposits. It can be most easily distinguished from pyrite by its more colourful tarnish

porphyry deposits- earth science

The major products fromporphyry copper depositsarecopperand molybdenum orcopperand gold. The termporphyry coppernow includes engineering as well as geological considerations; It refers to large, relatively low grade, epigenetic, intrusion-relateddeposits…

everything you need to know about copper porphyries

Mar 11, 2015·Porphyry depositsare very large, polymetallic systems that typically containcopperalong with other important metals. Much of today’s mineral production depends on porphyries: 60% ofcopper, 95% of molbdenum, and 20% of gold comes from thisdeposittype

safford,porphyry copper deposit- usgs

Deposittype:Porphyry copper: Depositsubtype: Cu-Au: Age (Ma) 48 Ma: Age determination method: K-Ar: Age range: 57–48 Ma: Age reference: Langton and Williams (1982); Singer and others (2008) Minerals

gold inporphyry copper deposits: its abundance andfate

Oct 01, 2002· 1. Introduction.Porphyry copper depositscontain up to 100 t of gold and are among the largest reservoirs of gold in the upper crust (Kerrich et al., 2000).They are commonly surrounded bydepositsand country rock containing gold that is thought to have been derived from them (Jones, 1992).Gold can be removed fromporphyry coppersystems by vapors that separate at high …

geology ofporphyry copper depositssouthwestern north

Hardcover Book: Geology of ThePorphyry Copper Deposits- Southwestern North America, by; Titley & Hicks Measures 12" x 9" - 287 pages - Dated 1966, by; Edited By; Spencer R. Titley & Carol L. Hicks - University of Arizona Press

the great porphyry copper deposits of arizona| geology

Oct 17, 2019· Theporphyry copper deposits of Arizonaare located in what is known as the ‘basin and range’ physiographic province. This region is characterized by a series of fault bound blocks that have risen and fallen creating a distinctive valley-mountain range topography

number of undiscoveredporphyrycu modepositsexpected to

number of undiscoveredporphyryCu-Modepositsexpected to occur in this tract is: Percentile 90 50 10 5 1 Estimated no. ofdeposits1 2 4 8 10 References Beane, R.E., and Titley, S.R., 1981,Porphyry copper deposits, Part II; Hydrothermal alteration and mineralization, in Skinner, B.J., editor, Economic Geology 75 th Anniversary Volume: Economic Geology Publishing Company, p. 235-269

giant versus smallporphyry copper depositsof cenozoic

Abstract.Cenozoic magmatic activity in northern Chile led to the formation of two contrastingporphyry copperbelts: (1) a Paleocene–Early Eocene belt comprising smallporphyry copper deposits(e.g., Lomas Bayas) of normal calc-alkaline affinity; and (2) a Late Eocene–Early Oligocene belt hosting hugeporphyry copper deposits(e.g., Chuquicamata) of adakitic affinity

2.2porphyry-epithermal mineralsystem | geoscience australia

The mainporphyry-epithermal province in Australia is the Siluro-Ordovician Macquarie Arc in New South Wales, which contains majorporphyryCu-Audepositsat Cadia (global resource of 1.31 Gt at 0.31% Cu and 0.74 g/t Au: Cooke et al., 2007) and Northparkes (global resource of 153 Mt at 1.03% Cu and 0.46 g/t Au: Cooke et al., 2007)

porphyry copper depositdensity - usgs

Porphyry copper depositdensities vary from 2 to 128depositsper 100,000 km 2 of exposed permissive rock, and the density histogram is skewed to high values. Ninety percent of the control areas have densities of four or moredeposits, 50 percent have densities of 15 or moredeposits, and 10 percent have densities of 35 or moredepositsper

porphyry copper deposit density| economic geology

Porphyry copper depositdensities vary from 2 to 128depositsper 100,000 km 2 of exposed permissive rock, and the density histogram is skewed to high values. Ninety percent of the control areas have densities of four or moredeposits, 50 percent have densities of 15 or moredeposits, and 10 percent have densities of 35 or moredepositsper

by-products ofporphyry copperand molybdenumdeposits

PorphyryCu andporphyryModepositsare large to giantdepositsranging up to >20 and 1.6 Gt of ore, respectively, that supply about 60 and 95% of the world’scopperand molybdenum, as well as significant amounts of gold and silver. Thesedepositsform from hydrothermal systems that affect 10s to >100 km3 of the upper crust and result in enormous mass redistribution and potential

(pdf)porphyry deposits- researchgate

porphyry copper deposits, such as Bingham and Bajo de la Alumbrera, sulphide deposition was primarily due to cooling of metal-rich, saline brines below 400ºC (Ulrich et al., 2001;

geology ofporphyry copper depositssouthwestern north

Hardcover Book: Geology of ThePorphyry Copper Deposits- Southwestern North America, by; Titley & Hicks Measures 12" x 9" - 287 pages - Dated 1966, by; Edited By; Spencer R. Titley & Carol L. Hicks - University of Arizona Press

explainer: why are somany explorers chasing a porphyry

Mar 01, 2020· When it comes toporphyry deposits, size counts. These multigenerational monsters are responsible for ~60 per cent of the world’scopper, most of its molybdenum, and significant amounts of gold and silver. Their easy-mining large volumes make up for the low grades, typically between 0.3 per cent to 1 per centcopperequivalent. But these […]

number of undiscoveredporphyrycu modepositsexpected to

number of undiscoveredporphyryCu-Modepositsexpected to occur in this tract is: Percentile 90 50 10 5 1 Estimated no. ofdeposits1 2 4 8 10 References Beane, R.E., and Titley, S.R., 1981,Porphyry copper deposits, Part II; Hydrothermal alteration and mineralization, in Skinner, B.J., editor, Economic Geology 75 th Anniversary Volume: Economic Geology Publishing Company, p. 235-269

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