Porphyry Copper Deposits – What Investors Need to Know …

2017-5-5 · Here''s what investors should know about them. Porphyry copper deposits are one of the most important sources of copper and molybdenum, and are also major sources of silver, gold, and tin. In ...

Orestone Defines Large Gold Copper Porphyry Target at …

1  · The 100 percent owned Captain gold-copper Project encompasses 105 square kilometres and hosts a large gold dominate porphyry system located 41 kilometres north of Fort St. James and 30 kilometres south of the Mt. Milligan copper-gold mine in North Central British Columbia. The Captain Project features relatively flat terrain, moderate tree ...

Metallis Intersects Significant, Near Surface, Porphyry …

2020-1-17 · @newswire/metallis-intersects-significant-near-surface-porphyry channel ⓘ • Turn off ads with a Pro subscription • Advertise on CEO.CA. Get CEO.CA Pro. Real-time Level 2 Market Depth. Click for live demo *** Limited time offer *** $50 off CEO.CA Pro. Click now to claim. news releases. 31 Aug 2022, 09:01 ...

Characteristics and controls of the largest porphyry …

2007-5-9 · Eleven gold‐rich porphyry copper and 14 epithermal gold deposits around the Pacific rim contain > 200 t (‐7 million oz) of gold. These large porphyry‐type deposits conform to a single overall model, whereas the large epithermal gold deposits are varied in both genetic type and mineralisation style. Most regional and local characteristics ...

A rapid change in magma plumbing taps porphyry copper …

2022-10-14 · The transition to new and green technologies is increasing the need for metals 1, 2 such as copper for which demand is forecast to increase by 140–350% from 2010 to 2050 3, 4. Porphyry-type ...

Porphyry Deposits: The World''s Largest Source …

2014-5-28 · Grasberg is the world''s largest gold mine and second-largest copper mine. It was originally discovered by geologists looking for the source of the rich alluvial gold deposits in the lowlands of Irian Jaya. Between 1990 and 2019, …

Basic characteristics of gold-rich porphyry copper deposits ...

Basic characteristics of gold-rich porphyry copper deposits and their ore sources and evolving processes of high oxidation magma and ore-forming fluid Author(s): LI JinXiang, QIN KeZhang, LI GuangMing Pages: 678-688 Year: Issue:3 Journal: Keyword: ...

Basics Of Copper Porphyry Deposits For Investors

2020-10-21 · According to this table, you need 100 to 200 times the average. In other words, you need copper grade of between 0.58 and 1.16 percent. So, when you see exploration companies report drill results ...

Gold Distribution in Porphyry Copper Deposits of …

2016-2-27 · Gold Distribution in Porphyry Copper Deposits of …

Gold in Porphyry Copper Deposits: Experimental …

2000-3-1 · If gold is present in the ore-forming solutions, more of it will be deposited in high-temperature porphyry copper-gold deposits where it will be closely associated with bornite. …

By-products of porphyry copper and molybdenum …

Abstract. 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. These deposits form from hydrothermal systems that affect 10s to >100 km 3 of the upper crust and ...

Porphyry Copper Deposits | Geology for Investors

2013-7-23 · It was originally discovered by geologists looking for the source of the rich alluvial gold deposits in the lowlands of Irian Jaya. Reserves are estimated to include 2.8 billion tonnes of ore with grades of 1.1% copper 1.04 g/t gold …

Geology of Porphyry Copper Deposits

2015-3-22 · Porphyry deposits and IOCG''s are the world''s primary source of copper and they account for more than 60% of the copper production globally but in addition to copper they also supply of the world''s molybdenum …

Rapid switch in magmatic plumbing taps porphyry copper …

2022-10-17 · Scientists have made an intriguing new discovery about the formation of mineral deposits critical to our transition to a ''green economy''. The new collaborative study, led by Lawrence Carter of the University of Exeter''s Camborne School of Mines, has shown that porphyry-style copper deposits form due to a rapid change in the underlying magmatic piping […]

Gold in porphyry copper deposits: its abundance and fate

2002-10-1 · Porphyry copper deposits contain 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 by …

Recent discovery may lead to next-gen porphyry copper …

2022-10-19 · Recent discovery may lead to next-gen porphyry copper deposits. A. A. UK-based researchers have discovered that porphyry-type copper deposits form due to a rapid change in the underlying magmatic ...

Reduced porphyry copper-gold deposits: A new

2000-6-1 · These "reduced" porphyry Cu-Au deposits lack primary hematite, magnetite, and sulfate minerals (i.e., anhydrite), but contain abundant hypogene pyrrhotite, commonly have …

Porphyry Copper Deposits | Geology for Investors

2013-7-23 · Grasberg is the world''s largest gold mine and third largest copper mine. It was originally discovered by geologists looking for the source of the rich alluvial gold deposits in the lowlands of Irian Jaya. Reserves are estimated to …

The Geology and mineralisation of the Waisoi porphyry ...

: The Waisoi porphyry copper/gold deposits at Namosi, in the Republic of Fiji, arehosted by several units of strongly faulted, fractured and altered volcanic rocks.The lower host volcanic unit consists of coherent and autobrecciated basalticandesite lavas of the ...

Recent discovery may lead to next-gen porphyry copper …

18  · "Porphyry-type deposits provide most of the world''s copper and molybdenum, as well as large amounts of gold and other metals, which are of increasing demand for green technologies such as ...

Gold endowments of porphyry deposits …

2020-1-14 · Porphyry copper–gold deposits are large volume, low-grade disseminations formed by precipitation of copper and gold (plus molybdenum) from fluids of magmatic origin 1.

Porphyry Deposits 101 | Doubleview Gold Corp.

Porphyry Deposits 101. 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 ...

Porphyry Copper Deposit Model

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. …

Gold in porphyry copper deposits: its abundance and fate

2002-10-1 · 1.. IntroductionPorphyry copper deposits contain 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 by deposits and country rock containing gold that is thought to have been derived …

Discovery about how porphyry-type copper deposits form …

2  · Porphyry-type deposits provide most of the world''s copper and molybdenum, as well as large amounts of gold and other metals, which are of increasing demand for green …

Exploration of Porphyry Copper Deposits

2015-6-22 · The epithermal gold mineralization at the top of the image is not detected by the magnetics except as a break between the blue and the green which may indicate a fault, however are blind porphyry intrusion the camp …

Porphyry Deposits: General characteristics and modeling

Porphyry Copper-Gold Deposits . Porphyry Cu-Mo Deposits . Tectonic Setting Porphyry copper deposits are typically formed in a continental arc and island arc settings along the Pacific Ring of Fire – the west coast of North and South America to the Eastern portions of Asia.

Reduced porphyry copper-gold deposits: A new

2000-6-1 · Despite this assertion, several otherwise typical porphyry Cu-Au deposits exhibit clear evidence of having formed from relatively reduced ore fluids. These "reduced" porphyry Cu-Au deposits lack primary hematite, magnetite, and sulfate minerals (i.e., anhydrite), but contain abundant hypogene pyrrhotite, commonly have carbonic-rich ore ...

Meteoric Resources detects ''giant'' potential …

2020-12-9 · High-grade epithermal gold. Meteoric''s exploration team has long been struck by the potential for high-grade epithermal gold deposits at Juruena to be part of a bigger magmatic hydrothermal system. Meteoric managing …

Discovery about how porphyry-type copper deposits form …

2  · Porphyry-type deposits provide most of the world''s copper and molybdenum, as well as large amounts of gold and other metals, which are of increasing demand for green technologies such as electric ...

Porphyry copper, molybdenum, and gold deposits, …

2020-11-11 · Case histories of mineral discoveries, volume 3: porphryry copper, molybdenum and gold deposits, volcanogenic deposits (massive sulfides), and deposits in layered rock. by V.F. Hollister, editor by Victor F. Hollister, 1991, Society for …

University of Exeter: A rapid switch in magmatic plumbing …

1  · The researchers believe that these findings will help exploration geologists discover the next generation of porphyry copper deposits. Porphyry-type deposits provide most of the world''s copper and molybdenum, as well as large amounts of gold and other metals, which are of increasing demand for green technologies such as electric vehicles ...

(PDF) Reduced porphyry copper-gold deposits: A new

For example, some porphyry copper and gold deposits exhibit evidence for a strong association with highly reducing components such as enriched hypogene pyrrhotite and CH 4 fluid …

Porphyry Copper, Gold, and Molybdenum Deposits: …

2018-6-20 · Mutschler et al., 1981; Wallace, 1991. Because some porphyry Mo deposits contain significant W, the few papers that document Mo-W and W porphyry deposits are also provided in this subsection. Breccias associated with porphyry copper deposits have been a source of fascination for many researchers.

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 …