gold skarn and porphyry gold

(PDF) Skarns in the Porphyry Copper-Gold Environment

2022-2-13 · Skarns in the Porphyry Copper-Gold Environment. November 2008. Conference: PACRIM 2008. At: Gold Coast, Queensland, Australia. Volume: …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

MINERALOGY, GEOCHEMISTRY AND ORIGIN OF SKARN ...

MINERALOGY, GEOCHEMISTRY AND ORIGIN OF SKARN MINERALIZATION ASSOCIATED WITH THE BATU HIJAU PORPHYRY COPPER-GOLD DEPOSIT, SUMABAWA ISLAND, INDONESIA . May Thwe Aye, Assoc. Prof. Dr. Subagyo …Home | C3 METALS INC. | Copper-Gold Mining Exploration2022-2-7 · A Rare Copper-Gold Portfolio in The Americas. C3 Metals Inc. (TSXV: CCCM) has concessions covering 5,700 hectares of copper and gold mineralized skarn in southern Peru, in the prospective Andahuaylas-Yauri belt, an emerging porphyry copper province that is host to some of the worlds largest copper mines.

Copper-gold endoskarns and high-Mg …

2007-4-14 · Copper–gold skarn, hosted by quartz monzodiorite porphyry, was intersected by drill holes SHD-8 and SHD-10 (Fig. 8). Two deformation zones of sericite–chlorite–carbonate schist, dipping 40 and 60° northeast, are correlated from hole to hole. The porphyry in between is massive but fractured and veined.Pacific Ridge Acquires Onjo Copper-Gold Porphyry Project ...2022-2-3 · The Project hosts skarn and alkalic porphyry copper-gold mineralization associated with monzonitic phases of the Witch Lake intrusions cutting Takla volcanic rocks, similar to the mineralization and host rocks at the Mount Milligan Mine. The style of copper-gold mineralization returned in historical drilling, combined with the presence of ...

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 owned Boss porphyry copper-gold project in the Goodsprings Mining .. pper-gold endoskarns and high-Mg …2007-4-14 · Copper–gold skarn, hosted by quartz monzodiorite porphyry, was intersected by drill holes SHD-8 and SHD-10 (Fig. 8). Two deformation zones of sericite–chlorite–carbonate schist, dipping 40 and 60° northeast, are correlated from hole to hole. The porphyry in between is massive but fractured and veined.

Gold Skarn Deposits | PDF | Rock (Geology) | Rocks

2012-3-20 · Porphyry copper type: Large-scale and low-gold grade. Lead-zinc type: very little gold contain Fig.2 Distribution of Au, Ag, and Cu in skarn, pluton, and protolith of a large copper skarn system, Whitehorse copper belt, Canada (from …Golden Dawn to Fly Vtem in Search for Major Copper-Gold ...2021-1-14 · The exploration target is a major copper-gold skarn deposit and possibly an intrusion-related porphyry-type copper-gold deposit. Maps showing Greenwood Precious Metals Project (top) and Phoenix area (bottom) with interpreted direction of offset of Phoenix cluster of mines from north-trending corridor and eastern cluster of deposits.

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 crosscuttingThe Gersdorffite-Bismuthinite-Native Gold Association and ...The Lavrion district in Greece is part of the Attic-Cycladic metamorphic core complex, and contains a variety of ore types including porphyry Mo-W, skarn Fe-Cu-Bi-Te, carbonate-replacement Pb-Zn-Cu-As-Sb-Ag ± Au-Bi, and vein/breccia Pb-Zn-Cu-As-Sb-Ag-Au-Ni-Bi [1,2,3,4,5,6,7].Mineralization was synchronous with the intrusion of a Miocene granodiorite …

Relationship Between Magmatism and Mineralization in …

2015-5-7 · associated to economically significant gold deposits. The most abundant Mesozoic ore deposits in eastern Nevada are related to Cretaceous intrusions, and include the copper-(gold) porphyry, skarn, and sedimentary rock-hosted deposits in the Robinson district near Ely, Nevada (Fournier, 1967; Seedorff et al., 1995); Ag-Pb-Zn-Au carbonateCU, AU, AND ZN-PB SKARN DEPOSITS (MODELS 18b,c; …2004-2-25 · Fe skarn model, Hammarstrom and others, this volume). Total sulfide mineral content at the McCoy, Nev., gold skarn is low ( <2 volume percent) and many sulfide minerals are oxidized. In contrast, at the Fortitude, Nev., gold skarn about 30 km to the north, high grade ore is sulfide mineral rich, and includes mostly pyrrhotite as well as

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 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 …2.2 Porphyry-epithermal mineral system - Geoscience …2022-2-3 · 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 …

Models and Exploration Methods for Major Gold Deposit …

2015-10-24 · known porphyry and high-sulfidation epithermal gold deposit types, as well as skarn and manto type deposits, formed in continental and oceanic convergent plate settings. These deposits are best regarded as components of large hydrothermal systems centered on high-level, generally oxidized, intermediate to felsic porphyry stocks (Figure 1; Table 1).Skarn: A rock altered by hot, chemically-active fluidsSome of the world''s best copper, gold, lead, molybdenum, tin, tungsten, and zinc deposits have been in skarn. Skarn Information [1] Arc-Related Porphyry Molybdenum Deposit Model, by R.D. Taylor, J.M. Hammarstrom, N.M. Piatak, …

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 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 …Skarn: A rock altered by hot, chemically-active fluidsSome of the world''s best copper, gold, lead, molybdenum, tin, tungsten, and zinc deposits have been in skarn. Skarn Information [1] Arc-Related Porphyry Molybdenum Deposit Model, by R.D. Taylor, J.M. Hammarstrom, N.M. Piatak, …

(PDF) Distribution of gold in porphyry copper deposits

2022-1-27 · Gold grades are less than 0.05 ppm in the porphyry copper-molybdenum deposits. Between these end members is an economically important group containing significant amounts of both gold and ...Gold in porphyry copper deposits: its abundance and fate ...Whether gold remains in porphyry copper deposits is important both to their economic attractiveness and to the distribution of gold in the upper crust. Cu/Au atomic ratios of porphyry copper ore deposits form a continuous range from about 5000 to 5,000,000 with a median near 40,000, which separates gold-rich and gold-poor deposits.

Models and Exploration Methods for Major Gold Deposit …

2015-10-24 · known porphyry and high-sulfidation epithermal gold deposit types, as well as skarn and manto type deposits, formed in continental and oceanic convergent plate settings. These deposits are best regarded as components of large hydrothermal systems centered on high-level, generally oxidized, intermediate to felsic porphyry stocks (Figure 1; Table 1).2.2 Porphyry-epithermal mineral system - Geoscience …2022-2-3 · 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 …

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 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 …Gold Skarn Deposits | PDF | Rock (Geology) | Rocks2012-3-20 · Porphyry copper type: Large-scale and low-gold grade. Lead-zinc type: very little gold contain Fig.2 Distribution of Au, Ag, and Cu in skarn, pluton, and protolith of a large copper skarn system, Whitehorse copper belt, Canada (from …

Relationship Between Magmatism and Mineralization in …

2015-5-7 · associated to economically significant gold deposits. The most abundant Mesozoic ore deposits in eastern Nevada are related to Cretaceous intrusions, and include the copper-(gold) porphyry, skarn, and sedimentary rock-hosted deposits in the Robinson district near Ely, Nevada (Fournier, 1967; Seedorff et al., 1995); Ag-Pb-Zn-Au carbonateMAPS SHOWING MINERAL RESOURCE ASSESSMENT …2012-3-1 · report considers two deposit types: (1) porphyry or stock­ work deposits of copper. and molybdenum (referred to generally in this report as porphyry deposits) and (2) skarn deposits of tungsten, iron, gold, copper, and silver. Com­ bining copper and molybenum porphyry deposits into a

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) ProgressiveTINGI 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).

Skarn: A rock altered by hot, chemically-active fluids

Some of the world''s best copper, gold, lead, molybdenum, tin, tungsten, and zinc deposits have been in skarn. Skarn Information [1] Arc-Related Porphyry Molybdenum Deposit Model, by R.D. Taylor, J.M. Hammarstrom, N.M. Piatak, …The Gersdorffite-Bismuthinite-Native Gold Association and ...The Lavrion district in Greece is part of the Attic-Cycladic metamorphic core complex, and contains a variety of ore types including porphyry Mo-W, skarn Fe-Cu-Bi-Te, carbonate-replacement Pb-Zn-Cu-As-Sb-Ag ± Au-Bi, and vein/breccia Pb-Zn-Cu-As-Sb-Ag-Au-Ni-Bi [1,2,3,4,5,6,7].Mineralization was synchronous with the intrusion of a Miocene granodiorite …

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).All about skarns - Clark Science Center2007-11-2 · Gold skarn mineralization at the Crown Jewel deposit was discovered in 1988 and current reserves stand at 8.7 Mt averaging 6.0 g/t Au, for a total of 52 t Au, although the deposit is still in a protracted permitting phase (Bob Derkey, Washington Department of Natural Resources, personal communication).

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 group of papers edited byGeology of Porphyry Copper Deposits2015-3-22 · That skarn had a high enough grade to allow it to continue to be mined from underground. The Big Gossans copper gold skarn deposit is the highest grade deposit in the Grasberg area. Reserves of 37,000,000 tons at 2.7% copper, 1 g per ton gold and 16 g of per ton silver that''s about $240 to $250 a ton rock.

CU, AU, AND ZN-PB SKARN DEPOSITS (MODELS 18b,c; …

2004-2-25 · Fe skarn model, Hammarstrom and others, this volume). Total sulfide mineral content at the McCoy, Nev., gold skarn is low ( <2 volume percent) and many sulfide minerals are oxidized. In contrast, at the Fortitude, Nev., gold skarn about 30 km to the north, high grade ore is sulfide mineral rich, and includes mostly pyrrhotite as well asRedline Gold Skarn Deposits – Western Mining HistoryThe Redline Gold Skarn Deposits is a gold mine located in Humboldt county, Nevada at an elevation of 4,987 feet. About the MRDS Data: All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy.

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) ProgressiveNewrange Samples 2.994 g/t Gold in Porphyry Dike and ...2021-6-14 · Newrange Samples 2.994 g/t Gold in Porphyry Dike and Expands Footprint of Skarn Hosted Gold Mineralization in McGill Canyon Area, Pamlico . VANCOUVER, BRITISH COLUMBIA, June 14, 2021 (TSXV: NRG, US: NRGOF, Frankfurt: X6C) – Newrange Gold Corp. ("Newrange" or the "Company") is pleased to announce that preliminary surface rock sampling …

Copper Canyon Skarn Deposits (MRDS #10310303) AU, …

The East and West copper-gold skarn orebodies were mined in the 1970s and the world-class Fortitude gold-silver skarn deposit was discovered north of the West orebody in late 1980. After three years of stripping and mining of the lower grade Upper Fortitude ore zone, production from the larger and richer lower Fortitude ore zone began in late .. TRUSION-RELATED GOLD DEPOSITS - CMI Capital …2012-5-17 · INTRUSION RELATED GOLD DEPOSITS CHARACTERISTICS • Sillitoe (1991) – Gold-rich porphyry deposits – Epithermal & skarn in porphyry Cu environments – Gold related to alkalic magmatism – Mostly associated oxidized intrusions – Intrusion related gold deposits in Sn-W terranes (Thompson et al., 1999)

MINERALOGY, GEOCHEMISTRY AND ORIGIN OF SKARN ...

MINERALOGY, GEOCHEMISTRY AND ORIGIN OF SKARN MINERALIZATION ASSOCIATED WITH THE BATU HIJAU PORPHYRY COPPER-GOLD DEPOSIT, SUMABAWA ISLAND, INDONESIA . May Thwe Aye, Assoc. Prof. Dr. Subagyo …Genetic Types and Metallogenic Model for the …It contains hundreds of polymetallic copper–gold deposits and occurrences. Those deposits are mainly clustered (from west to east) within the Tongguanshan, Shizishan, Xinqiao, Fenghuangshan, and Shatanjiao orefields. Until recently, the majority of these deposits were thought to be skarn- or porphyry–skarn-type

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) ProgressiveSkarn 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 group of papers edited by

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.Gold Skarns - British Columbia2018-8-22 · 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.

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

2021-5-1 · 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 ...Geology and genesis of the giant Beiya porphyry–skarn …The Beiya gold–polymetallic orefield, with gold reserves of 305 t, is one of the most representative porphyry-skarn orefields in the Jinshajiang–Ailaoshan Cu–Au ore belt within the Sanjiang region of southwest China. The orefield contains seven deposits: the Wandongshan, Hongnitang, Dashadi, Bijiashan, Weiganpo, Matouwan, and Bailiancun ...