porphyry copper gold deposits

Reduced porphyry copper-gold deposits: A new variation on ...

Reduced porphyry copper-gold deposits: A new variation on an old theme Stephen M. Rowins. Stephen M. Rowins 1. Department of Earth and Ocean Sciences, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada. Search for other works by this author on: GSW.

Geology of Porphyry Copper Deposits

Porphyry copper deposits ppt. Here let's understand the geology of porphyries and iron oxide copper gold deposits or IOCG as they are known. These are somewhat the giants of the ore deposits world. As a mining interested learner, the geology of porphyry copper deposits …

Dipidio Group, Porphyry copper deposit

May supply feed to Dipidio. True Blue Gold/Copper Project: exploration in the Dipidio area (35 prospects). Area near the Dipidio open pit has been extensively explored. Drilling at True Blue in 2006 identified a small intrusive stock. In 2011, reported as low-grade alkalic porphyry deposit 0.6 km from Dipidio; may provide mine feed to Dipidio.

Porphyry Deposits | PDF | Geology | Economic Geology

Porphyry Deposits as a Copper and Gold Resource Gold Resources Copper Resources A Geological Cross Section through the Batu Hijau porphyry deposit, Indonesia (920 million tons of ore grading 0. Wt.% cu, 0. G / t au) Supergene Malachite Spatial Distribution of Porphyry Deposits The Origin of Porphyry Cu-Au-Mo Magmas Hydration Melting Porphyry-epithermal-skarn system - overview.

Gold in Porphyry Copper Deposits: Experimental ...

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. Coexisting magnetite in these deposits should generate magnetic anomalies.

Gold Distribution in Porphyry Copper Deposits of Kerman ...

Gold contents of the Kerman porphyry copper deposits are generally low, ranging from 0.010 to 0.190 g/t. The copper ores exhibit Cu/Au atomic ratios much greater than 40000, and Au/Mo ratios below 30, which signifies them as gold-poor porphyry copper deposits. The gold-poor signature of the Kerman

PORPHYRY COPPER-GOLD DEPOSIT, BRITISH COLIJMBIA

PORPHYRY COPPER-GOLD DEPOSIT, BRITISH COLIJMBIA (93A/12) By Theresa M. Fraser, Colin I. Godwin, John F.H. Thompson and Clifford R. St: nley Mineral Deposit Research Unit, U.B.C. (MDRU Contribuh'on 021) KEYWORDS: Economic geology, porphyry Cu.Au, Mount

Enrichment of Platinum‐group Elements (PGE) and Re‐Os ...

The osmium isotopic compositions in porphyry copper (gold) deposits reveal that (187 Os/ 188 Os) i values are highly variable and not lower than those of primitive upper mantle (PUM) and mantle peridotite, however, osmium concentrations are commonly lower than mantle peridotite, suggesting that parental magmas of some porphyry intrusions had experienced crustal contamination …

(PDF) Skarns in the Porphyry Copper-Gold Environment

Gold to copper ratios within the skarns are generally lower than for porphyry Au-Cu deposits at Cadia, particularly the high tonnage, low-grade Cadia Hill deposit.

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).

Gold concentrations of magmatic brines and the metal ...

Porphyry copper–molybdenum–gold deposits are the most important metal resources formed by hydrothermal processes associated with magmatism. It remains controversial, however, whether the metal ...

The geological characteristics, geochemical signature and ...

gold-bearing, global porphyry systems are related to potassic magmas. About 60% of the gold that is contained in the 25 largest porphyry copper-gold deposits in the world, as ranked by gold content, occurs in nine potassic magma-related deposits (Garwin, 2019). In approximate order of decreasing

Gold endowments of porphyry deposits controlled by ...

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.These deposits …

Characteristics and controls of the largest porphyry ...

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 …

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

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 deposits and country rock containing gold that is thought to have been derived from them (Jones, 1992). Gold can be removed from porphyry copper systems by vapors that ...

Ridge subduction and porphyry copper-gold mineralization ...

Sillitoe R H. Characteristics and controls of the largest porphyry copper-gold and epithermal gold deposits in the circum-Pacific region. Australian J Earth Sci, 1997, 44: 373–388. Article Google Scholar 2. Cooke D R, Hollings P, Walsh J L. Giant porphyry deposits: Characteristics, distribution, tectonic controls.

Geology of Porphyry Copper Deposits

Porphyry copper deposits ppt. Here let's understand the geology of porphyries and iron oxide copper gold deposits or IOCG as they are known. These are somewhat the giants of the ore deposits world. As a mining interested learner, the geology of porphyry copper deposits is vital to your education.. Now in the first Exploration Geology Course I discussed how because our current mining ...

Porphyry and Hydrothermal Copper and Gold Deposits: A ...

Porphyry and Hydrothermal Copper and Gold Deposits: A Global Perspective | T.M. Porter (ed.) | download | Z-Library. Download books for free. Find books

Geophysical signatures of copper-gold porphyry and ...

situ measurements of porphyry copper deposits 1.5. Cross-section of alteration zones characteristic of high-sulphidation deposits 1.6. Diagram of hypothetical low sulphidation epithermal gold deposit to illustrate the effect of erosion level on geophysical responses 2.1 Batu Hijau geology, sulphide content, alteration, and RTP magnetics

Porphyry Copper - Aurania Resources

Porphyry deposits produce approximately 60% of the world's copper. Most of these deposits lie in the Pacific Rim, also known as the Ring of Fire, an arc that stretches from Papua New Guinea to the southern tip of Chile. The copper is contained within roughly cylindrical granitic bodies that are remnants of the magma core beneath volcanoes.

Petrographic Characteristics of Porphyry Indicator ...

Petrographic Characteristics of Porphyry Indicator Minerals from Alkalic Porphyry Copper-Gold Deposits in South-Central British Columbia (NTS 092, 093) M.A. Celis, Mineral Deposit Research Unit, University of British Columbia, Vancouver, BC, [email protected] F. Bouzari, Mineral Deposit Research Unit, University of British Columbia, Vancouver, BC

Red Chris Copper-Gold Porphyry Deposit | Geology for Investors

The Red Chris deposit is a copper-gold porphyry deposit in northern British Columbia, Canada. Red Chris is owned by the Red Chris Development Company Ltd. which is wholly owned by Imperial Metals Corporation (TSX:III). Xstrata Canada has a 1.8% smelter royalty on the project which may be reduced to 1% with the payment of $1,000,000 to Xstrata.

EPITHERMAL GOLD-SILVER and PORPHYRY COPPER-GOLD …

PORPHYRY COPPER-GOLD EXPLORATION - Short Course Manual Greg Corbett Incomplete DRAFT as at February 2018 Corbett Short Course Manual SUMMARY This short course manual considers field aspects of epithermal and porphyry ore deposits as an aid to mineral exploration. The classification of ore systems used here allows ore and ...

Super Porphyry Copper & Gold Deposits - A Global ...

in - Porter, T.M. (Ed), 2005 - Super Porphyry Copper & Gold Deposits - A Global Perspective; PGC Publishing, Adelaide, v. 2, pp. 409-421. ABSTRACT The Dexing porphyry copper field in Jiangxi, China, is defined by three porphyry copper deposits which are, from southeast to northwest, Fujiawu‚ Tongchang and Zhushahong respectively, and by the Guanmaoshan gold deposit which lies …

Reduction of oxidized sulfur in the formation of the ...

The Grasberg porphyry copper-gold deposit is located in the Ertsberg-Grasberg mineral district in the province of Papua, Indonesia and lies within the New Guinea fold-and-thrust belt (Fig. 1a).Grasberg is the world's largest gold-rich porphyry copper deposit and its mineral district also contains a number of large mineralized copper-gold skarns (Cooke et al. 2005).

Porphyry copper deposit - Wikipedia

HIGHLY PROSPECTIVE Copper/Gold/Moly Porphyry Targets EMERSON, GOATHORN and JACOBITE 03 THE TARGETS: NEW PROSPERITY GOLD -COPPER PORPHYRY DEPOSIT MODEL 15 EMERSON (50 km2) and GOATHORN (17.8 km2) have characteristics of New Prosperity gold-copper porphyry (7.7M oz. Au; 3.6 billion lb. Cu) JACOBITE(17.8 km2) has characteristics

Porphyry Deposits Showing Potential for High-tonnage, Low ...

Copper porphyry deposits can range from 10s of millions in metric tons (Mt) to more than 1 billion Mt of ore. This high tonnage of mineralized rock and the associated long mine life that can span ...

(PDF) Distribution of gold in porphyry copper deposits

Analysis of 55 porphyry copper deposits demonstrates a continuum between porphyry copper-gold deposits emplaced at a median depth of 1 km, with a median size of 160 million metric tons of copper ...