May 28, 2014· These deposits provide over 60% of the world's copper and include other important metals such as molybdenum, gold and silver. Porphyry copper deposits are known for their low grades and very high tonnage. A porphyry is not a rock type, but rock with a particular texture. This porphyritic rock has large feldspar crystals in a finer grained matrix.

Major Deposit, Copper, Gold, Cobalt, Western Canada, Porphyry. Doubleview Gold Corp.[DBG-TSXV; DBLVF-OTCBB; 1D4-FSE] has been following up on its 2014 copper-gold Hat Project alkalic porphyry discovery in the Golden Triangle region of northwestern British Columbia.Extraordinarily prolific, the Golden Triangle, which hosts high-grade gold and silver vein deposits, large-scale porphyries and VMS ...

IG Copper LLC (IGC) IG Copper LLC, (IGC) between 2010 and 2018, advanced the Malmyzh porphyry copper-gold project until it was sold for $200M to Russian Copper Company, a leading copper producer in the Russian Federation. Located in Russia's Far East, the Malmyzh exploration and mining licenses were held by IGC and Freeport-McMoran ...

Jan 13, 2016· Well I'll start out by giving you the background on this rock sample. It comes from a section of New Brunswick where Gold and Copper deposits are being located on a yearly basis. This is an ore from a zone of Copper Porphyry which was located in southeastern New Brunswick. The overall grade of the ore was assayed at .35% copper and 600ppb AU or gold.

Porphyry copper deposits are heavily studied and mined due to the abundance of base metals (Cu, Mo, etc.), and significant byproduct metals such as gold and silver. Porphyry deposits account for ~60% of copper production and 95% of molybdenum production globally (Sinclair 2007).

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 …

Feb 05, 2021· 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).

Sep 21, 2021· The inferred resource was 334,000 tonnes at 0.17% copper, 0.11 g/t gold, 0.84 g/t silver and 0.013% molybdenum. (This article first appeared in the Canadian Mining Journal )

Jan 14, 2020· These porphyry deposits, which are found mainly around the Pacific Ring of Fire, produce three-quarters of the natural copper and a quarter of the natural gold mined. "A copper deposit can contain ...

Mineral deposits 3 Porphyry/stockwork Deposits Of Copper, Molybdenum, And Tungsten 5 Stockwork/disseminated Deposits Of Gold And Silver 6 Methodology Of Mineral Resource Assessment 6 Description Of Data Sets 7 Geology 7 Sedimentary rocks 8 Plutonic rocks 9 Mines and prospects 10 Geochemistry 10 Sampling methods 10 Analytical methods 10

Porphyry Copper-Gold Deposits . Oyu Tolgoi: 2,467 Mt @ 0.68 wt % Cu, 0.32 g/t Au, (790 t Au) Batu Hijau: 1,644 Mt @ 0.44 wt % Cu, 0.35 g/t Au, (572 t Au) Frieda River: 1,103 Mt @ 0.61 wt % Cu, 0.32 g/t Au, (354 t Au) Porphyry Cu-Mo Deposits . El Teniente: 12,482 Mt @ 0.63 wt % Cu, 0.02 wt % Mo, 0.035 g/t Au, (437 t Au)

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 …

Jun 24, 2020· The Miners Queen project is part of the Cascade Range porphyry copper province of Washington and Oregon that includes about 20 known occurrences of porphyry-style mineralization associated with Oligocene to Miocene intrusions (Lasmanis, R., 1995), including the giant Mt. Margaret porphyry copper-molybdenum deposit (523 Mt of 0.366% Cu, 0.011% Mo, 0.24 g/t Au, and 1.6 g/t Ag (non 43-101 ...

Dec 09, 2020· Copper-gold porphyry deposits. Mr Tunks used the Cadia copper-gold district being mined by Newcrest Mining (ASX: NCM) in New South Wales as an example of a "massively profitable" copper-gold porphyry deposit that annually produces around 950,000 ounces of gold and 90,000t of copper.

Learn how to Find Rich Gold Deposits in Porphyry, we are going to be talking about that in great depth and the associated Geology with Porphyry, Copper Porp...

The world-class Boddington deposit (total resources at 31 December 2010 of 1.53 Gt grading 0.102% Cu and 0.579 g/t Au), in the Saddleback Greenstone Belt of the Southwest Terrain of the Yilgarn Craton, is interpreted as a ∼ 2707 Ma porphyry Cu-Au deposit that has been overprinted by a …

Porphyry Copper, Gold, and Molybdenum Deposits: Preface . EDITOR: DAVID R. COOKE. CODES – The Australian Research Council's Centre for Excellence in Ore Deposit Research, University of Tasmania, Private Bag 126, Hobart, Tasmania 7001, Australia . Porphyry deposits are the world's principal resources of Cu, Mo, and Re, and are major

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.

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.

Copper is the primary commodity of economic interest in most porphyry copper deposits, although some deposits with low to very low copper grades are mined principally for their gold (for example, Çopler, Turkey) and(or) molybdenum (for example,

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.

Key Words: Cadia, gold, copper, porphyry, drilling, magnetics, induced polarisation Introduction The Cadia Ridgeway deposit is one of a group of porphyry-style deposits discovered since 1992 by Newcrest geologists (Wood and Holliday, 1995; Holliday et al, 1998), at Cadia 20 kms south of …

Mar 03, 2010· 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.

Porphyry deposits represent an important resource of copper; however, they are also important sources of gold and molybdenum - with porphyry deposits being the dominant source of the latter. In general, porphyry deposits are characterized by low grades of ore mineralization, a porphyritic intrusive complex that is surrounded by a vein stockwork ...

Mar 11, 2015· In porphyry mineralization, there are many economic minerals that can be found: copper, gold, molybdenum, silver, lead, zinc, tin, and tungsten. There are also associated mineral deposits that can form that depend on the host rock and the distance from the heat source. …

Tonnage and grade represent weighted average for 43-101 compliant indicated and inferred resources for Bayugo at 0.4% Cu cutoff and for measured and indicated reserves and Kaly-an copper/gold project is an exploration area adjacent to (north of) Boyongan project area. Diorite porphyry dikes; breccias. Manila Mining Corp. (2010). Study area name

The Kingking deposit is a gold-rich porphyry copper deposit located in Pantu-kan, Compostela Valley, at the south-eastern portion of Mindanao Island, the Philippines. It has a total mine-able ore reserve of 353 million tons at 0.385% Cu and 0.439 g t-1 Au. It is currently being explored and managed by …

Porphyry Cu systems host some of the most widely distributed mineralization types at convergent plate boundaries, including porphyry deposits centered on intrusions; skarn, carbonate-replacement, and sediment-hosted Au deposits in increasingly peripheral locations; and superjacent high- and intermediate-sulfidation epi-thermal deposits.

Sep 24, 2021· What makes a porphyry copper-gold system really sing is its scale. Lefroy Exploration (ASX:LEX) is demonstrating just that at its Burns discovery 50km from Kalgoorlie, where new exploration results continue to expand a find that has excited the market since an initial hit in February. Lefroy shares were up almost 10% in early trade this morning after it struck more than 240m of continuous ...

Jun 22, 2015· 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. I'll talk more in detail about drilling and the drill techniques in a later course.

May 09, 2007· 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.

Pebble, Alaska: The Pebble deposit is a major copper-gold porphyry system in southern Alaska. ZTEM results over the deposit have been presented earlier by Paré and Legault (2010). The geology (plan and section) are shown in Figure 2. In addition to the ZTEM, Spectrem was flown over the deposit and surrounding area. These results have proven

Jul 06, 2021· Dugmore, M. A., Leaman, P. W. & Philip, R. Discovery of the Mt Bini porphyry copper-gold-molybdenum deposit in the Owen Stanley Ranges, Papua New Guinea—A geochemical case history. J. …

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 …

An Established Porphyry Copper-Gold Mining District 6 km from town of Houston,B.C. • Roadaccessibleto centreof property • Open for es tand ilds, gen terra n 26 km northof EquitySilver Mine Access to infrastructurethatincludes: • Experi enc dw ork f ce • Estab lished road and ai netwo k • Hydro power CSE:EDGM|FRA:EG8 5

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.