porphyry copper deposit

Mineral deposit Hydrothermal solution | Britannica

Porphyry copper deposits (and their close relatives, porphyry molybdenum deposits) contain disseminated mineralization, meaning that a large volume of shattered rock contains a ramifying network of tiny quartz veins, spaced only a few centimetres apart, in which grains of the copper ore minerals chalcopyrite and bornite (or the molybdenum ore mineral molybdenite) occur with pyrite. The shattered .

Libero Copper to Acquire the Mocoa Porphyry Copper Deposit ...

May 09, 2018· The Mocoa deposit contains an inpit inferred resource at a cutoff of % copper equivalent (CuEq) of 636 million tonnes of % copper equivalent including billion pounds of copper and 511 million pounds of molybdenum.

Porphyry copper deposits of the world

Porphyry copper deposits of the world Metadata Updated: January 29, 2020 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.

Exploration History of the Resolution Copper Deposit ...

Jul 20, 2015· This intercept represents the economic discovery of the Magma porphyry copper system at Superior that was later renamed the Resolution copper deposit. At the conclusion of this effort, it was decided to deemphasize their search for highgrade veins, skarns, stringer zones and targets associated with the South Boundary Fault.

Why No Porphyry Copper Deposits in Japan and South Korea ...

cifically on porphyry Cu deposits before the 1970s (Ishihara, 1974), or since, it seems most unlikely that exposed mineralization of this type would have been missed in a country with such a long Cumining tradition as Japan. Therefore, it is concluded that the lack of Japanese porphyry Cu deposits must have a geological explanation.

Alacer Gold Reports Exploration Results From the Mavialtin ...

Feb 14, 2020· The porphyry copper mineralization is characterized by welldeveloped stockwork quartzmagnetitepyrite veins with copper. Peripheral ironcoppergold skarns are observed within the limestone.

Photographs of :RayMine,Arizona,one thelargest deposits in the United States. Upper right: Highgrade copper ore from the Ray Mine, Arizona.

THE EL TENIENTE MEGABRECCIA DEPOSIT, THE WORLD'S .

as a porphyry copper deposit formed around the Pliocene El Teniente Dacite Porphyry dike, with 80% of its copper mineralization hosted in Miocene andesitic extrusive rocks. During the last decade, however, regional mapping (Figure 3; Morel and Spröhnle, 1992; Floody and Huete, 1998), and mapping in extensive new underground mine

Porphyry Gold Deposits of the Refugio District, Maricunga ...

porphyry gold deposits at Refugio in the Maricunga belt contain the lowest known copper:gold ratios of any porphyrytype deposit, and previous studies have established their similarities to goldrich porphyry copper deposits (Vila and Sillitoe, 1991; Vila et al., 1991). One of the orebodies at Refugio, Pan

Porphyry Copper Deposits | Science

Porphyry Copper Deposits. By R. V. KIRKHAM. See all Hide authors and affiliations. Science 10 Sep 1982: Vol. 217, Issue 4564, pp. DOI: / . Article; Info Metrics; eLetters; PDF; This is a PDFonly article. The first page of the PDF of this article ...

Porphyry copper mineralization in NE Sudan | CSA Global

Preservation of what is considered the first documented porphyry CuAu deposit in the NE African portion of the Arabian Nubian Shield can probably be related to the accretion of the magmatic arc to a stable continental margin within a few million years of mineralization, thus enabling the deposit to escape excessive uplift, erosion and structural dismemberment.

Libero Copper HighQuality Copper and Gold Deposits in ...

About Libero Copper Gold Libero holds a collection of porphyry deposits throughout the Americas in prolific but stable jurisdictions. The portfolio includes both exploration properties such as Big Red, a new gold discovery in the Golden Triangle, Canada, and highquality deposits with significant resources but without any fatal flaws or ...

Porphyry Copper Deposits in the ... Rockstone Research

Porphyry deposits are the most important source for the metals copper, molybdenum and gold (more than 50% of the globally mined copper comes from porphyry systems). Additionally, significant quantities of other metals are mined from porphyry deposits, such as tin, silver, lead and zinc .

in the worldclass porphyry lode deposits of Butte, MT

porphyry deposits in the world, both in terms of average Ag grade ( g/ st) and total production plus reserves (Fig. 1). It is also the second biggest Agproducing mining district in the United States (after the Couer d'Alene district, Idaho). Annual silver and copper production data for .

K20 Drilling at Perseverance Supports Proximity to Copper ...

Jan 21, 2019· The perceived proximity of long intervals of K20 to a large porphyry copper deposit provides the opportunity to utilize directional drilling to avoid redrilling poorly consolidated and weathered cover rocks. In order to determine the optimal direction for wedging,...

in the worldclass porphyry lode deposits of Butte, MT

Butte historic silver production. According to a Geological Survey (USGS) compilation (Singer et al., 2005) Butte, MT is one of the most silver (Ag) rich porphyry deposits in the world, both in terms of average Ag grade ( g/ st) and total production plus reserves (Fig. 1).

Recovery of Copper by Solution Mining Methods

major porphyry copper deposit located in the headwaters of Bingham Creek. This is the present site of the largescale, open pit operation at Bingham Canyon, which commenced operations in 1906 and continues to produce ... Methods . Recovery of Copper by Solution Mining Methods (%) Of % ...

Advances in Geology of the Porphyry Copper Deposits ...

The volume is particularly significant because porphyry coppers are by far the most important class of deposits in terms of global copper reserves and, most importantly, because southwestern North America contains an unusually large number and variety of these deposits.

Rapid formation of porphyry copper deposits evidenced by ...

porphyry copper deposits remains poorly described. Here, we estimate the duration of the magmatichydrothermal fluid flow at 700 °C to <350 °C using diffusion profiles of Ti and δ18O in quartz from Fe, Cu, and Mo sulfidebearing hydrothermal veins and porphyry dikes at the Haquira East porphyry copper deposit.

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 are usually oxidized (with oxygen fugacities > ΔFMQ +2) (Mungall 2002; Sun et al. 2015). The problem is that while most of the magmas at convergent margins are highly oxidized, porphyry Cu deposits are very rare, .

Why large porphyry Cu deposits like high Sr/Y magmas?

It has been recognized for some time that porphyrytype deposits are associated with magmatic arcs 2, but only in recent years have links with high Sr/Y (>40) andesitic to .