Porphyry Copper Deposits Ore

tops and bottoms of porphyry copper deposits | Economic ...

Programs of exploration for porphyry ore deposits can clearly benefit from the application of a model of this sort.A typical porphyry copper-bearing stock is inferred to grade downward into stock-work mineralization and potassium silicate alteration in a phaneritic intrusive, which in turn is transitional downward to an essentially unaltered ...

Chuquicamata, Porphyry copper deposit

Cuadra, P., and Camus, F., 1998, The Radomiro Tomic porphyry copper deposit, northern Chile, in Porter, T.M., ed., Porphyry and hydrothermal copper and gold deposits ...

ORE DEPOSITS 101 Part 3 Porphyries - YouTube

Mar 14, 2015· 1- Mineral Systems Approach to Porphyry Copper Exploration: Southwest Alaska- Eric Anderson, 2015 - Duration: 34:11. ... Porphyry type deposit gold ore samples - Duration: 14:49.

Gold in porphyry copper deposits: its abundance and fate ...

Gold abundances in porphyry copper deposits vary greatly, complicating efforts to define gold-rich porphyry copper deposits. The original definition was based on the Au/Mo ratios of porphyry copper deposits with no reference to their copper content , and resulted in the suggestion that gold-rich deposits were found largely in island arc regions (Kesler, 1973).

Porphyry copper deposits in China | Request PDF

The "three-high" are that, 1) the high polarization body directly reflects the sulphide belt on both flanks of porphyry copper deposit and indirectly reflects the included copper ore in the ...

Exploration of Porphyry Copper Deposits

Anomalies can be very tightly defined using soil geochemistry and usually wet enough to allow you to site a drill hole. As with almost all ore deposit types porphyry targets need to be drilled eventually to quantitatively determine actual copper, gold and molybdenum values in the identified mineralization.

Porphyry Copper Flashcards | Quizlet

Can porphyry copper deposits be located within the host rock, country rock or both? Both. If the ore is spread-out (at different grades) through the entire deposit is it then not fracture controlled? No. ... precipitation of porphyry ore on cooling

How to make porphyry copper deposits - ScienceDirect

Like most ore deposits, porphyry copper deposits (PCDs) are rare, but they exhibit spatiotemporal patterns of distribution and geochemical signatures that may hint at their origins. They represent shallow level intrusives (2–5 km) (Sillitoe, 2010), not too shallow that they erupt and not too deep that they do not degas . On a global scale ...

Porphyry Copper Deposits – geo590

Porphyry Copper Deposits . Shelby Cloer, Rhiannon Garrard, and Ian Johnson. Definition and Occurrence. Porphyry copper deposits define a broad range of sulfide rich, ore bearing intrusions and surrounding rocks found generally formed at …

What Makes for a Copper Porphyry Takeover Target

Major miners look to copper porphyry deposits for large-tonnage, low-cost operations. We take a look at what makes for a copper porphyry takeover target…

By-Products of Porphyry Copper and Molybdenum Deposits ...

Porphyry Cu and porphyry Mo deposits are large to giant deposits ranging up to >20 and 1.6 Gt of ore, respectively, that supply about 60 and 95% of the world’s copper and molybdenum, as well as significant amounts of gold and silver.

Copper processing - Ores | Britannica

Copper processing - Copper processing - Ores: Principal forms in which copper ores are found include native copper, porphyry copper, massive deposits, and mixed ores. Native copper is simply the metal found unadulterated in nature. Occasionally copper is still found in its native form, but more frequently it is mixed with other minerals, some of which may have value …

UK scientists develop new method to find copper deposits ...

Porphyry-type copper deposits, which originally form at several kilometres depth below the Earth’s surface, above large magma chambers, are …

Porphyry Deposits: The World's Largest Source of Copper ...

Iron oxide copper gold ore deposits (IOCG) are important and highly valuable concentrations of copper, gold and uranium ores hosted within iron oxide dominant gangue assemblages which share a common genetic origin. These ore bodies range from around 10 million tonnes of contained ore, to 4,000 million tonnes or more, and have a grade of between 0.2% and 5% copper, with gold contents ranging ...

What Investors Need to Know About Porphyry Copper Deposits ...

Porphyry copper deposits are among the world’s most valuable deposits. Here’s what investors should know about them. Approximately 50-60 percent of the world’s copper, and 95 percent of ...

Porphyry Copper Systems*

alteration-mineralization in the porphyry Cu deposits is zoned upward from barren, early sodic-calcic through potentially ore-grade potassic, chlorite-sericite, and sericitic, to advanced argillic, the last of these constituting the lithocaps, which may attain >1 km in thickness if unaffected by significant erosion. Low sulfidation-state

Porphyry Copper Deposits | Geology for Investors

Jul 23, 2013· Most of the world’s copper is extracted from a type of mineral deposit called a “porphyry copper”. If you’ve seen a picture of a great big open-pit mining operation odds are that it was a porphyry copper deposit. Some of the biggest man-made holes in the ground are porphyry copper mines ...

Porphyry copper deposits of the world - USGS

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.

A Plate Tectonic Model for the Origin of Porphyry Copper ...

space-time distribution of porphyry copper and porphyry molybdenum deposits. Porphyry ore deposits, occurring in the western Americas, southwest Pacific and Alpide orogenic belts, are thought to constitute a normal facet of calc-alkaline magma- tism. Chemical and isotopic data cited are consistent with the generation of the com-

Geology of Porphyry Copper Deposits

If you take into account the probable cut off you can see how small the margins are porphyry deposits are very sensitive to metal prices. These examples are some of the cadillacs of the ore deposit worlds but other lower grade porphyry deposits can become uneconomic with just a 20% drop in copper price.

Porphyry Copper Deposit Model - USGS

Summary of Porphyry Copper Deposit Model. A. Introduction. B. Deposit Type and Associated Commodities. C. History of Porphyry Copper Deposits. D. Regional Environment. E. Physical Description of Deposits. F. Geophysical Characteristics. G. Hypogene Ore Characteristics. H and K. Hypogene and Supergene Gangue Characteristics. I. Hydrothermal ...

Porphyry copper deposit | mineralogy | Britannica

Porphyry copper deposit, large body of rock, typically a porphyry of granitic to dioritic composition, that has been fractured on a fine scale and through which chalcopyrite and other copper minerals are disseminated.Porphyry copper deposits commonly contain hundreds of millions of metric tons of ore that averages a fraction of 1 percent copper by weight; although they are low-grade, the ...

Triggers for the formation of porphyry ore deposits in ...

Oct 13, 2013· Porphyry ore deposits supply much of the copper, molybdenum, gold and silver used by humans. A review of the main processes that trigger porphyry ore formation suggests that sulphide saturation of ...

PORPHYRY DEPOSITS - Earth science

The major products from porphyry copper deposits are copper and molybdenum or copper and gold. The term porphyry copper now includes engineering as well as geological considerations; It refers to large, relatively low grade, epigenetic, intrusion-related deposits that can be mined using mass mining techniques.

Porphyry copper deposit - Infogalactic: the planetary ...

Porphyry-type ore deposits for metals other than copper. Copper is not the only metal that occurs in porphyry deposits. There are also porphyry ore deposits mined primarily for molybdenum, many of which contain very little copper.

Porphyry Deposits 101 – Doubleview Capital Corp.

Porphyry copper-gold deposits form in a variety of volcanic environments, most commonly in continental margins and intra-oceanic arcs. These are large scale magmatic-hydrothermal systems associated with a series of porphyritic intrusions, which result in extensive alteration footprints that we map and model to target high grade copper-gold mineralization.

Porphyry copper deposits: Strike-slip faulting and ...

Porphyry copper deposits sometimes form during the solidification of stocks of relatively oxidized magma of intermediate composition. Most workers have assumed ore-forming systems have special chemical attributes, but none has been found that is …

ORE DEPOSITS 101 - Part 3 - Porphyries, Skarns ... - YouTube

Jul 07, 2017· ORE DEPOSITS 101 - Part 3 - Porphyries, Skarns & IOCG SprottEDU. ... Finding Something Unexpected in an Abandoned Copper Mine - Duration: 14:48.

PORPHYRY DEPOSITS - Earth science

The major products from porphyry copper deposits are copper and molybdenum or copper and gold. The term porphyry copper now includes engineering as well as geological considerations; It refers to large, relatively low grade, epigenetic, intrusion-related deposits …

What is a Porphyry Copper Deposit?

bodies are very large, generally containing from 100 million to several billion tons of copper ore with a copper content of 0.2% to 2.0%. The majority of porphyry copper deposits occur adjacent to subduction zones (i.e. Ring of Fire around the Pacific Ocean), which form along continental margins (i.e. Andes Mountains) and island

King Copper | AZGS

A third copper source includes copper of breccia pipes of the Breccia Pipe Province of northern Arizona. Porphyry Copper Deposits. Most of the copper mined in Arizona comes from porphyry copper deposits. These are copper ore deposits associated with intrusive igneous rocks similar to granite.