gold skarn and porphyry gold

Rapid Formation of Porphyry and Skarn Copper-Gold ...

The Gold Coast skarn and associated porphyry-style veins in Sydney Monzodiorite and Ieru siltstone formed in 14,000 to 21,000 years (n = 3), the Siltstone Ridge porphyry system in 2,000 to 12,000 years (n = 4), and the Fubilan porphyry system in 31,000 to 40,000 years (n = 6). The Taranaki skarn has not been dated in the mine area due to a lack ...

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(PDF) Skarns in the Porphyry Copper-Gold Environment

The skarns in porphyry-skarn systems usually form at the contact zone between the intrusions and wall rock and contain massive and high-grade copper mineralization,

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gold skarn and porphyry gold - creances-fleurs.fr

Porphyry Copper Deposits. Extensive experience with copper-gold porphyry systems I have worked on porphyry systems in Indonesia, Peru, Haiti, British Columbia, and Nevadagold skarn and porphyry gold crusher for sale Western Pacific enters agreement to acquire the Deer Trail Mine Feb 26, Trail, .How Are Porphyry Copper Deposits , of secondary minerals including gold (usually called a gold ...

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Gold Skarn Deposits—Geology and Exploration Criteria

About 10 6 kg (>30 Moz) of gold have been recovered from skarn deposits. These occurrences can be subdivided into five major skarn types: gold, iron, copper, porphyry copper, and lead-zinc. Each skarn type has distinctive characteristics and can be differentiated on the basis of geochemistry, mineralogy, pedogenesis, and tectonic setting.

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(PDF) The mineralogy of gold-copper skarn related

Clacic gold–copper bearing skarn in the Batu Hijau porphyry deposit is located in the western part of Sumbawa Island, Indonesia. Skarn mineralizations were found at the

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Gold Skarns - British Columbia

2018-8-22  Characteristics of Gold Skarns Gold skarns are defined as skarn deposits in which gold is the primary or dominant economic metal present. The following features should be noted about these deposits: 1. They occur worldwide along destructive plate margins (Figure 1) and tend to have a spatial and temporal association with Cu porphyry provinces. 2.

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Skarn Occurrences in Utah and the Potential for

2019-6-11  gold in porphyry systems show that gold mineralization can occur in multiple locations within the same system. Sillitoe and Bonham (1990) present a model showing gold in Cu-Mo porphyry, Cu skarn, polymetallic carbonate replacement/skarn, and sediment-hosted deposits. A

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Evolution of the gold (copper) mineralization in the ...

2021-9-1  The precious and base metal mineralization in the Astarghan area occurred in three main zones, (1) copper–lead–zinc skarn patches (Zone A; Fig. 2), (2) porphyry-type copper–(gold) stockwork veins/veinlets, mainly associated with the potassic zone, and quartz–tetrahedrite veins/veinlets related to the phyllic alteration (Zone B; Fig. 2 ...

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Geology and geochemistry of the Phu Lon copper-gold

2019-3-22  typical of porphyry copper environments (Burnham and Ohmoto, 1980). Therefore, any exsolved magmatic fluid associated with the Phu Lon plutons would have been oxidised potentially rich in sulphur, copper and even gold. These fluids would have been critical in forming the mineralised skarn at Phu h. Based on crosscutting

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

2002-10-1  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).

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Gold Skarns - British Columbia

2018-8-22  Characteristics of Gold Skarns Gold skarns are defined as skarn deposits in which gold is the primary or dominant economic metal present. The following features should be noted about these deposits: 1. They occur worldwide along destructive plate margins (Figure 1) and tend to have a spatial and temporal association with Cu porphyry provinces. 2.

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(PDF) The mineralogy of gold-copper skarn related

Clacic gold–copper bearing skarn in the Batu Hijau porphyry deposit is located in the western part of Sumbawa Island, Indonesia. Skarn mineralizations were found at the deep level of the deposit ...

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Hopper Copper Gold Porphyry Skarn – CAVU

The Hopper property hosts copper-gold skarn and porphyry mineralization in southwestern Yukon Territory. This 74 sq km road accessible property is located 22 km north of the Otter Falls hydroelectric generator within the Traditional Territory of the Champagne Aishihik First Nation.

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gold skarn and porphyry gold - creances-fleurs.fr

Porphyry Copper Deposits. Extensive experience with copper-gold porphyry systems I have worked on porphyry systems in Indonesia, Peru, Haiti, British Columbia, and Nevadagold skarn and porphyry gold crusher for sale Western Pacific enters agreement to acquire the Deer Trail Mine Feb 26, Trail, .How Are Porphyry Copper Deposits , of secondary minerals including gold (usually called a gold ...

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Chesapeake Intercepts Skarn and Porphyry Mineralization

2018-6-21  A high grade silver-gold vein field and ore grade zinc-gold skarn-hosted mineralization have been identified at Central and Lucy. The geological and geophysical work to date suggests Yarely could host several porphyry type targets which would be the first known in this region of the country.

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Skarn Occurrences in Utah and the Potential for

2019-6-11  gold in porphyry systems show that gold mineralization can occur in multiple locations within the same system. Sillitoe and Bonham (1990) present a model showing gold in Cu-Mo porphyry, Cu skarn, polymetallic carbonate replacement/skarn, and sediment-hosted deposits. A

Read More
Geology and geochemistry of the Phu Lon copper-gold

2019-3-22  typical of porphyry copper environments (Burnham and Ohmoto, 1980). Therefore, any exsolved magmatic fluid associated with the Phu Lon plutons would have been oxidised potentially rich in sulphur, copper and even gold. These fluids would have been critical in forming the mineralised skarn at Phu h. Based on crosscutting

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MINERALOGY AND ORIGIN OF COPPER- GOLD BEARING

A copper-gold bearing skarn was newly found in the deep level of the Batu Hijau deposit which is an island arc porphyry deposit, located in the southwestern corner of Sumbawa Island, in the west Nusa Tenggara Province, Sunda-Banda Archipelago of Indonesia.

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

2002-10-1  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).

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Porphyry gold–copper mineralisation in the Cadia district ...

The Cadia porphyry gold–copper district is the largest hydrothermal, intrusion-related gold deposit in eastern Australia. Discovered in 1992 by Newcrest Mining Limited, pre-mine resources in the district were in excess of 585 t Au and 2.35 Mt Cu. The Cadia district lies within shoshonitic subaqueous volcanic rocks of the Late Ordovician Molong Volcanic Belt in the eastern Lachlan Fold Belt ...

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Skarn and porphyry deposits -

2009-7-13  Porphyry-Skarn Ratio 15:1 ... Gold Qtz+ Mag Late fluid egress from vein 1cm Key Garnet (zoned) Stage-1 Sta g e -2 Epidote Magnetite-Quartz Sevlage peach Quartz Pathways between skarns and porphyry deposits. Cadia Quarry—Big Cadia Skarn. Dynamic Model (Stages 1 2) Progressive

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(PDF) Skarns in the Porphyry Copper-Gold Environment ...

2 24 - 26 November 2008 PACRIM Congress 2008 SKARNS IN THE PORPHYRY COPPER-GOLD ENVIRONMENT FIG 1 - Model for the formation of the Big Cardia skarn. Shows fluid flow from Cardia Quarry to Big Cardia within the calcareous volcanic-derived sandstone.

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TINGI PORPHYRY COPPER – GOLD / SKARN PROSPECT

TINGI PORPHYRY COPPER – GOLD / SKARN PROSPECT EXPLORATION SUMMARY Frontier Resources Ltd is very pleased to announce the results from a review of historic exploration at the Tingi Valley copper – gold porphyry Prospect, Muller Range ‐ EL 2356, Papua New Guinea (PNG).

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Geology and geochemistry of the Phu Lon copper-gold

2019-3-22  typical of porphyry copper environments (Burnham and Ohmoto, 1980). Therefore, any exsolved magmatic fluid associated with the Phu Lon plutons would have been oxidised potentially rich in sulphur, copper and even gold. These fluids would have been critical in forming the mineralised skarn at Phu h. Based on crosscutting

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A New Copper-Gold Porphyry For Boxxer Gold? -

2010-7-14  Boxxer Gold Corp. (TSX.V:BXX) is preparing to drill 26 areas of mineralized skarn and 32 geophysical (IP) targets on its 100% owned Boss porphyry copper-gold project in

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EPITHERMAL GOLD-SILVER and PORPHYRY COPPER

2018-2-18  EPITHERMAL GOLD-SILVER and PORPHYRY COPPER-GOLD EXPLORATION - Short Course Manual Greg Corbett Incomplete DRAFT as at February 2018 corbettgeology. Corbett Short Course Manual ... 1.2.2.5 Porphyry Cu 1.2.2.6 Skarn 1.2.2 7 Linkages between deposit types 1.3. Conclusions and exploration implications 2 Hydrothermal alteration

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MINERALOGY AND ORIGIN OF COPPER- GOLD BEARING

A copper-gold bearing skarn was newly found in the deep level of the Batu Hijau deposit which is an island arc porphyry deposit, located in the southwestern corner of Sumbawa Island, in the west Nusa Tenggara Province, Sunda-Banda Archipelago of Indonesia.

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2.2 Porphyry-epithermal mineral system Geoscience

2021-10-14  Skarn deposits are also zoned in this mineral system, with Cu-rich skarns generally very close to the causative intrusion, but Zn-Pb-rich skarns more distal. An important feature of the porphyry-epithermal mineral system is the telescoping of different deposit types, for instance porphyry

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The geology, genesis and exploration context of the

2014-11-18  1.2. Aerial photograph showing the location if porphyry and skarn deposits of the Cadia district. 2 1.3. Total gold content versus average gold grade of selected gold-rich alkalic and calc-alkalic porphyry deposits. 3 Chapter 2 Regional Geology 2.1. Principal components of the

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Porphyry gold–copper mineralisation in the Cadia district ...

The Cadia porphyry gold–copper district is the largest hydrothermal, intrusion-related gold deposit in eastern Australia. Discovered in 1992 by Newcrest Mining Limited, pre-mine resources in the district were in excess of 585 t Au and 2.35 Mt Cu. The Cadia district lies within shoshonitic subaqueous volcanic rocks of the Late Ordovician Molong Volcanic Belt in the eastern Lachlan Fold Belt ...

Read More