Porphyry copper deposits in the Tethyan metallogenic belt broadly occur in early Mesozoic, late Mesozoic, Paleogene, and Neogene within a wide range of tectonic setting.
01-05-2008· The Miduk porphyry copper deposit is located in the Shahr‐Babak area in Kerman province, Iran. This deposit is located 85 km NW of the Sar Cheshmeh porphyry copper deposit ().Preliminary mineral exploration in this area was carried out in 1967–1970 by Parjam and Metallgesellschaft (Hassanzadeh, 1993).So far, more than 50 diamond drill holes with a maximum …
Discriminating productive and barren porphyry copper deposits in the southeastern part of the central Iranian volcano-plutonic belt, Kerman region, Iran: A review Sina Asadia,⁎, Farid Moorea,1, Alireza Zarasvandib,2 a Department of Earth Sciences, Faculty of Sciences, Shiraz University, Shiraz, Iran
21-03-2021· Porphyry copper deposits provide 75% of the world's copper. According to the researchers, the link that they found is related to how vast quantities of …
01-02-2016· A new technique could revolutionise the way mining companies identify copper deposits, particularly those located deep underground.. The method focuses on the exploration for porphyry-type copper ...
16-02-2021· Copper minerals such as chalcopyrite, bornite, and chalcocite occur along with gold and molybdenite in stock work veins and disseminated in the host rock. These predictable alteration and mineralization assemblages help guide geologists looking for copper porphyry deposits. Workers can use mapping and then drilling to define the mineral resource.
08-09-2018· Porphyry deposits are the primary source of the world's Cu and Au. The metals are interpreted to have been deposited from magmatic fluids exsolved from the ore-associated porphyries (Burnham 1967).They predominantly occur above subduction zones, which has led to the suggestion that oxidized, water-rich subduction zone magmas may play an essential role in ore formation.
22-06-2015· 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.
01-11-2014· Metallogenesis of porphyry copper deposits in the KCMA. Porphyry copper deposits in post-collisional settings are generally derived from a thickened juvenile mafic lower crust, sulfur-rich, highly oxidized magmatic systems, with oxygen fugacities (fO 2) between the nickel–nickel oxide (NNO) or sulfide–sulfur oxide (SSO) and magnetite–hematite oxygen (MH) buffers (Imai et al., 1993, Sillitoe, …
05-11-2016· Porphyry ore deposits are the source of much of the copper, molybdenum, gold and silver used by humans. Porphyry ore typically forms in magmatic …
20-10-2020· copper porphyry deposits are valuable Now that you see how some of the clues can be used in exploring, let's talk about the values of these deposits. You see copper porphyry deposits are huge and they can last for decades making careers and companies.
Porphyry copper deposits contain most of the world"s Cu, Mo resources and about 20% of the world"s Au and minor amounts of other metals, especially, Ag, Pd, Te, Se, Bi, Zn and Pb (Sillitoe and ...
barren or contain metals with economic value Skarn deposits are important sources of base and precious metals as skarns form an intermediate zone between porphyry deposits in the center of mining districts and 1986 include porphyry copper Model 17 iron skarn Model 18d polymetallic vein Model 22c and replacement Model 19a...
06-08-2010· The Yulong porphyry copper ore belt is the largest belt of porphyry copper deposits in China. Detailed geological and geochemical comparison indicates that ore-bearing and barren porphyries in this belt were derived by progressive partial melting of veins of phlogopite-garnet clinopyroxenite in lherzolitic lithosphere.
The Ce 4+ /Ce 3+ threshold of 400 at Gibraltar is high in comparison to a value of 300 defined by Ballard et al. in the Chuquicamata-El Abra porphyry copper belt in Chile, 120 used by Liang et al. at five ore-bearing porphyries and three barren ones in Tibet, and 120 also used by Shen et al. at nine porphyry Cu deposits of the Central Asian orogenic belt.
PORPHYRY COPPER DEPOSITS OF THE WORLD: DATABASE MAPS AND PRELIMINARY ANALYSIS . porphyry copper deposits. Each deposit type is coded as the deposit type number and deposit type as listed in USGS Bulletins 1693 (Cox and Singer, 1986) and 2004 (Bliss, 1992).
barren porphyry copper deposit. Distribution of Worlds Porphyry Copper Deposits Modified from Singer et al 2008 Few porphyry copper deposits are greater than 340 million years old Formed at relatively shallow depths in the earths crust less than 15000 to 30000 feet in …
phyry Cu mineralization at the Mamut deposit are com-pared to those from the barren intrusives in the Mount Kinabalu area in order to discuss the genesis of the Mamut deposit. These rocks studied exhibit broadly similar petro-logic features, i.e., rich in K, and thus presumably have Genesis of the Mamut Porphyry Copper Deposit, Sabah, East Malaysia
01-02-2016· The project, funded by Anglo American, a major global mining company, compared the chemical compositions of minerals from magmatic rocks that host porphyry deposits against those which are barren.
porphyry copper exploration for nearly a decade in mapping resistivity contrasts that characterize porphyry copper deposit alteration systems (Ford et al., 2007; Hoschke, 2011). Indeed many ZTEM case-study examples over porphyry deposits have been published,
barren porphyry copper deposit; barren porphyry copper deposit. The formation of Luoboling porphyry Cu–Mo deposit . Zircon U–Pb LA-ICP-MS dating shows that Luoboling porphyry Cu–Mo deposit formed at 100 Ma. • Zircon grains from both barren and ore-bearing samples have high .
28-06-2020· Assess Porphyry Copper Potential of the Tonggou Copper Deposit, Eastern Tianshan Xue-Bing Zhang 1,2,*, Feng-Mei Chai 1, Chuan Chen 1, Hong-Yan Quan 3, Ke-Yong Wang 1,4, Shun-Da Li 1 and Shi-Shan Wu 1 1 College of Geology and …