EPITHERMAL GOLD-SILVER and PORPHYRY COPPER …
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 Hydrothermal alteration
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Discovery, geology and mineralisation of the Phu Kham copper-gold
The Phu Kham copper-gold deposit is in the Lao People's Democratic Republic. The name translates literally as "Mountain of Gold". The deposit includes distal sulphide skarn, proximal silicate-oxide skarn and stockwork mineralisation styles that are spatially related to a series of intermediate porphyry dykes.
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Gold-bearing skarns | U.S. Geological Survey
Gold-bearing skarns are generally calcic exoskarns associated with intense retrograde hydrosilicate alteration. These skarns may contain economic amounts of numerous …
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Discovery, geology and mineralisation of the Phu Kham …
The Phu Kham copper-gold deposit is in the Lao People's Democratic Republic. The name translates literally as "Mountain of Gold"". The deposit includes distal sulphide skarn, proximal silicate-oxide skarn and stockwork mineralisation styles that are spatially re-lated to a series of intermediate porphyry dykes. The alteration as-
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New Paleomagnetic results from the Beiya porphyry-skarn gold
Therefore, in this study, we selected mineralized rocks and intrusive rocks from the ~35 Ma Beiya porphyry-skarn gold–polymetallic deposit of the Dali faulted-block for systematic paleomagnetic studies (Fig. 1 b). Our aim was to resolve ongoing controversies concerning the deformation behavior within the CDF. 2.
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New Insights into Porphyry, Epithermal, and Skarn Deposits
Porphyry, epithermal, and skarn deposits are major deposit types in the world, producing large amounts of Cu, Au, Ag, Fe, W, Sn, Mo, Pb, and Zn, as well as other critical, nonferrous, and precious metals each year. ... The Ruwai skarn deposit is located in the Schwaner Mountain complex within the central Borneo gold belt and is currently ...
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Advances in Geological Models and Exploration …
Copper ± gold ± molybdenum porphyry deposits are large tonnage, low -grade hypogene resources. The deposit class is unified by a close spatial, temporal and genetic association ... significant resources of gold, and that epithermal and skarn deposits are genetically and spatially associated with porphyry deposits in many mineral districts ...
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Norden Crown Identifies New Copper Porphyry, Epithermal
Preservation of the porphyry-skarn-CRD-epithermal environments on the property. Geological mapping observations include exotic copper mineralization, high-sulfidation style gold showings, skarn ...
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EPITHERMAL GOLD-SILVER and PORPHYRY COPPER …
features provide vectors towards blind exploration targets. Skarns, developed by the alteration of reactive rocks, represent b. th ore systems and vectors to buried porphyry source rocks. These …
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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 …
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Distribution of tellurium, selenium, cobalt and gold in sulfide
Late Mesozoic porphyry-skarn Cu-Fe-Au deposits in the MLYRB contain associated Te, Se, and Co mineralization ... Recent progress in study of enrichment mechanism of tellurium, selenium and thallium from oxidized gold-rich porphyry-skarn deposits. Miner. Depos., 39 (2020), pp. 559-567. In Chinese with English Abstract.
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(PDF) The Batu Hijau porphyry copper-gold …
The Cadia porphyry gold-copper district is the largest hydrothermal, intrusion-related gold deposit in eastern Australia. ... (Cadia East) and skarn (Big Cadia and Little Cadia). All of the porphyry deposits show a close spatial association …
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All about skarns
The McCoy gold skarn is only 45 km southwest of the reduced Fortitude gold skarn in northcentral Nevada, but differs dramatically in regards to the style of mineralization and wallrock alteration. The McCoy deposit contains 15.6 Mt of ore averaging 1.44 g/t Au and an additional 30,430 tonnes averaging 14.6 g/t Au that was mined underground ...
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Skarn mineralization associated with the Cadia …
Skarn mineralization associated with the Cadia porphyry gold-copper deposit, NSW, Australia David B. Forster and Philip K. Seccombe* School of Geosciences, The University of Newcastle, Callaghan NSW, Australia 2308 [email protected] The Cadia deposits, located near Orange NSW, are among several examples of Ordovician, high and low
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(PDF) Skarn mineralization associated with the Cadia porphyry gold
Skarn mineralization associated with the Cadia porphyry gold-copper deposit, NSW, Australia May 2000 Conference: GeoCanada 2000, GAC-MAC Annual Meeting, Calgary, Canada
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The Gersdorffite-Bismuthinite-Native Gold Association and the Skarn
In the Serpieri deposit (Kamariza area), a porphyry-style pyrrhotite-arsenopyrite mineralized microgranitic dike is genetically related to a garnet-wollastonite bearing skarn characterized by a ...
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6 Intrusion-related gold deposits
hydration product, gypsum, are commonplace. Gold in hypogene porphyry copper gold deposits is commonly present in pyrite-poor, chalcopyrite-bornite assemblages, whereas in porphyry gold deposits pyrite is the only significant sulphide (Table 6.1). Magnetite, in part transformed to hypogene hematite, is a common but not ubiquitous
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Skarns in the Porphyry Copper-Gold Environment
Porphyry-related skarns are common around thePacific Rim. Examples include Cadia and Goonumbla (Australia) Ok Tedi (PNG) and Ertsberg and Grasberg (Indonesia). Although usually treated as separate to the adjacent porphyry copper-gold (Cu-Au) deposit, skarns near porphyry deposits are commonly inextricably part of the larger Cu-Au system(s). Using Cadia as the …
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The role of porphyry-related skarns in the Chating porphyry …
The Middle Lower Yangtze River Valley Metallogenic Belt (MLYB), characterized by porphyry and skarn copper–gold deposits and magnetite and apatite iron deposits, is one of the most important Cu–Fe–Au metallogenic belts in central eastern China. Due to the widespread Ordovician to Triassic carbonate rocks in the MLYB, skarn deposits are ...
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Geodynamic settings and tectonic model of skarn gold …
Porphyry–skarn Au deposits are distributed in the Tianshan-Altay, the Middle and Lower Yangtze River region, and Tibet and Sanjiang orogenic belts in both subduction and continental collision settings. The magma for the porphyry–skarn Au deposits commonly formed by melting of a thickened juvenile crust.
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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
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LARGE DISTAL-DISSEMINATED PRECIOUS- METAL …
At Copper Canyon, gold-bearing skarns are present in a widespread 39–Ma skarn-related, porphyry copper system, including the Fortitude gold skarn (approximately 2 million oz Au, …
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Rapid Formation of Porphyry and Skarn Copper …
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 ...
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U–Pb, Re–Os, and 40Ar/39Ar geochronology of the Nambija Au-skarn …
The porphyry-related, gold skarn district of Nambija has been one of the main gold producers of Ecuador with an estimated 62 t of gold extracted mostly by artisanal methods since the 1980s. Previous K–Ar dating (Prodeminca 2000) has yielded Late Jurassic to Early Cretaceous dates for skarn formation and Cu–Mo porphyry mineralization and ...
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Geology and geochemistry of the Phu Lon copper-gold …
Phu Lon skarn deposit may represent an oxidised end- member of gold enriched types. Key words: Phu Lon, skarn copper-gold, fluid chemistry, magmatic fluid, INTRODUCTION The Phu Lon skam deposit is located in the northernmost portion of the hi Fold Belt (Figure l), approximately 125 km northeast of the city of Loei. Copper mineralisation in
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Vectoring Deep Exploration Target in Skarn Gold Deposit, …
Serantak Skarn gold deposit is an enchanting exploration target as it has potential resources in about 250,000 ounces of gold. Discover the world's research 25+ million members
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Skarns in the Porphyry Copper-Gold Environment
Although usually treated as separate to the adjacent porphyry copper-gold (Cu-Au) deposit, skarns near porphyry deposits are commonly inextricably part of the larger Cu-Au system(s). Using Cadia as the primary example, we demonstrate that large, ... (location) Porphyry resource (wt % Cu, ppm Au) Skarn type and (skarn resource) Porphyry to skarn ...
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Skarns in the Porphyry Copper-Gold Environment
In this study we demonstrate the importance of understanding porphyry-skarn relationships in order to provide insights into the fluid dynamic and mineralising processes that occur in the …
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Gold Skarn Deposits -Geology and Exploration Criteria
Explorationists should noted that the more proximal gold-poor, garnet-rich part of a skarn deposit is likely to be more resistant to erosion and thus more likely to crop out and be sampled than …
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Models and Exploration Methods for Major Gold Deposit …
Oxidized intrusion-related deposits, including porphyry, skarn, and high-sulfidation epithermal deposits, are associated with high-level, oxidized porphyry stocks in magmatic arcs. Other …
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