Helpful tips

Where are porphyry copper deposits found?

Where are porphyry copper deposits found?

Porphyry copper deposits form in continental magmatic arcs along convergent plate-margin boundaries or in island-arc environments. The deposits are associated with subduction-related volcanic centers, although in some examples, they are thought to be associated with postcollisional volcanism.

Where is the best place to look for copper porphyry deposits?

Only a few are identified in Africa, in Namibia and Zambia; none are known in Antarctica. The greatest concentration of the largest copper porphyry deposits is in northern Chile.

What tectonic setting produces porphyry copper ore deposits?

Tectonic setting of porphyry copper and epithermal ore deposits. Porphyry copper, skarn and epithermal ore deposits are the most common type of hydrothermal ore deposits. They are genetically linked to convergent tectonic margins characterized by calcalkaline magmatism.

Where do the largest copper deposits occur?

The largest copper mine is found in Utah (Bingham Canyon). Other major mines are found in Arizona, Michigan, New Mexico and Montana. In South America, Chile, the world’s largest producer, and Peru are both major producers of copper.

Is the natural deposits of copper?

There are two distinct types of copper deposits: sulfide ore and oxide ore. Currently, the most common source of copper ore is the sulfide ore mineral chalcopyrite, which accounts for about 50 percent of copper production. Sulfide ores are processed via froth floatation to obtain copper concentrate.

How do you check for copper deposits?

Look for igneous rocks. Igneous rocks are volcanic in origin, and copper is usually located in igneous rock formations that are surrounded by rocks that have been altered by volcanic pressure and high temperatures. These deposits are called porphyry copper deposits.

What is the highest grade of copper?

According to FQM, copper cathode produced at Las Cruces reaches a maximum quality of 99.9% copper. The mine with the highest grade of copper in the world is Sudbury (also known as Victoria) in Canada, where the grade of ore is nearly 8%.

What is a good grade of copper?

COPPER: Anything over 100 metres and 1% copper equivalent or better is considered to be high-grade. For example, Serengeti Resources announced 119.6 metres of 0.9% copper equivalent (copper plus gold values added together) at depths from 180 to 300 metres.

What is the natural deposit of copper?

Where is the most copper found?

Chile
Chile, the world’s leading copper producer by far, produced an estimated 5.7 million metric tons of copper in 2020. In second place is Peru, with an estimated copper mine production of 2.2 million metric tons in the same year. The world’s third-largest copper producer from mines is China.

Will we run out of copper?

Copper and its alloys are totally recyclable. Whilst we shouldn’t run out, the demand for copper is growing and this may lead to shortages in the future until new deposits can be mined economically.

Which is the purest form of copper?

Blister copper
Blister copper is the purest form of copper after electrically refined copper (100% pure) which is obtained in this process.

Where are the porphyry copper deposits in 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. Show in a web browser window: Show in Google Earth or other KML viewer:

What kind of rock complexes are found in porphyry deposits?

Intrusive rock complexes that are emplaced immediately before porphyry deposit formation and that host the deposits are predominantly in the form of upright-vertical cylindrical stocks and(or) complexes of dikes; 4. Zones of phyllic-argillic and marginal propylitic alteration overlap or surround a potassic alteration assemblage; and, 5.

Which is the largest source of copper in the world?

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.

How are copper deposits related to the shal-low crust?

Alteration and ore mineralization at 1–4-km depth are genetically related to magma reservoirs emplaced into the shal- low crust (6–8+ km), predominantly intermediate to silicic in composition, in magmatic arcs above subduction zones; 3.