Gold-rich volcanogenic massive sulphide deposits.
Dubé, B., Gosselin, P., Mercier-Langevin, P., Hannington, M. D. and Galley, A. (2007) Gold-rich volcanogenic massive sulphide deposits. In: Mineral Deposits of ...
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VOLCANIC-ASSOCIATED MASSIVE SULFIDE DEPOSITS …
Essential characteristics of an idealized volcanogenic massive sulfide deposit (modified from Lydon, 1984). Mineral abbreviations ... with shear-hosted mesothermal lode gold deposits (Model 36a) and Algoma-type banded iron formation (Model 28b). ... Pyrrhotite-rich and magnetite-bearing massive sulfide deposits may be locatable by detailed
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GOLD-RICH VOLCANOGENIC MASSIVE SULPHIDE …
The Mouska mine in the Bousquet mining district represents a sulfide-rich gold deposit hosted by the Archean mafic metavolcanites of the Blake River Group, southern Abitibi greenstone belt. … Expand
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Gold-rich Volcanogenic Massive Sulphide Deposits
Scientific definition Gold-rich volcanogenic massive sulphide deposits (Au-VMS) are a sub-type of both volcanogenic massive sulphide (VMS) and lode gold deposits (Poulsen and …
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Gold in the Brunswick No. 12 volcanogenic massive sulfide …
The 329-Mt Brunswick No. 12 volcanogenic massive sulfide deposit (total resource of 163 Mt at 10.4% Zn, 4.2% Pb, 0.34% Cu, and 115 g/t Ag) is hosted within a Middle Ordovician bimodal volcanic and sedimentary sequence. Massive sulfides are for the most part syngenetic, and the bulk of the sulfide ore occurs as a Zn–Pb-rich banded sulfide facies that forms an …
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GOLD-RICH VOLCANOGENIC MASSIVE SULPHIDE …
Scientific definition Gold-rich volcanogenic massive sulphide deposits (Au-VMS) are a sub-type of both volcanogenic massive sulphide (VMS) and lode gold deposits (Poulsen and Hannington, 1996; Hannington et al., 1999; Huston, 2000; Poulsen et al., 2000) (Fig.1). Like most VMS deposits, they consist of semi-massive to massive, concordant ...
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Pyrite geochemistry for deposit type prediction and exploration in …
Examples of missing pyrite training data from the preferred model include: (1) economically significant deposit sub-types such as the rare gold-rich volcanogenic massive sulphide deposits (e.g., Eskay Creek) and PGE-rich pyrite from some porphyry copper-gold deposits elsewhere in British Columbia (i.e., New Afton); and (2) other deposit types ...
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Volcanogenic Massive Sulfides
Volcanogenic massive sulfide (VMS) deposits are mineral accumulations that form on or near the seafloor at sites of high-temperature hydrothermal vent fluid discharge. The deposits are formed by the precipitation of dominantly sulfide minerals around hydrothermal vents (e.g., black and white smokers) where high-temperature, metal- and sulfur-rich fluids mix with …
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Geology and Controls on Gold Enrichment at the Horne 5 Deposit …
A broad and diffuse halo of distal sericite-chlorite-epidote alteration extends outboard of intensely sericite-altered zones proximal to the sulfide lenses. Gold is interpreted to be synvolcanic on the basis of Au-rich massive sulfide clasts in the volcaniclastic units, the presence of preserved Au-rich primary pyrite, Au zones limited to the ...
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Volcanogenic Massive Sulfide Deposits Enriched in Gold
Volcanogenic massive sulfide deposits contain not only Cu, Zn, and Pb, but Sb, Bi, Te, Se Ag, Co, other metals, and variable amounts of Ag and Au. In some of these, gold …
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The gold content of volcanogenic massive sulfide deposits
Volcanogenic massive sulfide deposits contain variable amounts of gold, both in terms of average grade and total gold content, with some VMS deposits hosting world-class gold mines with more than 100 t Au. Previous studies have identified gold-rich VMS as having an average gold grade, expressed in g/t, exceeding the total abundance of base metals, …
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Volcanogenic Gold in the Massive Sulfide Environment
In this chapter, we compare the geologic settings, mineralogy, geochemistry, and alteration associated with several of the most gold-rich deposits and examine the possible …
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A chemical model for the concentration of gold in volcanogenic massive
Scientific definition Gold-rich volcanogenic massive sulphide deposits (Au-VMS) are a sub-type of both volcanogenic massive sulphide (VMS) and lode gold deposits (Poulsen and Hannington, 1996; … Expand. 53. 1 Excerpt; Save. Antithetic behaviour of gold in the volcanogenic massive sulphide deposits of the Iberian Pyrite Belt.
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Gold-Rich Volcanogenic Massive Sulphide Deposits
Gold-rich volcanogenic massive sulphide (Au-VMS) deposits are a subtype of both VMS and lode gold deposits. They consist of semi-massive to massive sulphide lenses underlain by stockwork feeder zones, with gold concentrations that exceed combined copper, lead, and zinc grades. Au-VMS deposits form on or below the seafloor from hydrothermal vents on submarine volcanoes. …
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The formation of gold‐rich seafloor sulfide deposits: Evidence …
Volcanogenic massive sulfide (VMS) deposits form at or near the seafloor as polymetallic sulfides precipitated from hot (up to ∼400°C) hydrothermal fluids [Franklin et al., …
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Geological setting of the Rapu Rapu gold-rich volcanogenic massive
Gold-rich Fe–Cu–Zn volcanogenic massive sulfide deposits occur within strata of probable Jurassic age on Rapu Rapu Island in Albay Province, Philippines.
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The gold content of volcanogenic massive sulfide deposits
Keywords Gold.Volcanogenic massive sulfides.Gold-rich VMS.World-class.Base metals Introduction Gold-rich volcanogenic massive sulfide (VMS) deposits are important exploration targets as their gold content contrib-Editorial handling: B. Lehmann Geological Survey of Canada contribution 20090023 P. Mercier-Langevin (*): B. Dubé: V. Bécu
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Ore Remobilization History of the Metamorphosed Rävliden North
The Skellefte district in northern Sweden hosts many volcanogenic massive sulfide (VMS) deposits and is considered one of the most important European mining districts for Cu, Zn, Pb, Ag, and Au. The volcanic and sedimentary rocks that the VMS deposits are hosted in were deformed during the Svecokarelian orogeny, with three documented regional deformation …
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Mineralization styles, alteration mineralogy, and sulfur isotope
Volcanogenic Massive Sulfide (VMS) deposits are synvolcanic stratiform accumulations of base metal sulfides that were precipitated on or near the seafloor from high-temperature hydrothermal fluids (250–350 °C), derived from the interaction of modified seawater with underlying volcanic rocks (Hannington, 2014).They are referred to as "massive deposits" …
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The Boliden gold-rich volcanogenic massive sulfide deposit, Skellefte
The Boliden deposit (8.3 Mt at 15.9 g/t Au) is interpreted to have been formed between ca. 1894 and 1891 Ma, based on two new U–Pb ID-TIMS ages: a maximum age of 1893.9 + 2.0/−1.9 Ma obtained ...
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VMS Volcanogenic Massive Sulphide Ore Deposits & Mineralization
Average Volcanogenic Massive Sulphide Ore Deposits Grades: 5% copper; 4% zinc < 1% lead; Maybe 1 gram per tonne of gold. Again there are a few outlines with far higher grades than these. Let's look now at a few examples of VMS deposits. Nevsun's Bisha deposit near Eritrea is a superb example of a VMS deposit.
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The gold content of volcanogenic massive sulfide …
Gold-rich volcanogenic massive sulfide (VMS) deposits are important exploration targets as their gold content contribute significantly to …
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Volcanic-associated massive sulphide gold | Semantic Scholar
The LaRonde Penna Au-rich volcanogenic massive sulfide (VMS) deposit is the largest Au deposit currently mined in Canada (58.8 Mt at 4.31 g/t, containing 8.1 Moz of Au).
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Hamama volcanogenic massive sulfide deposits, central Eastern …
The Hamama metavolcanics and their sulfide deposits are an important part of the Neoproterozoic Shadli bimodal metavolcanics in the central Eastern Desert (CED) of Egypt and recently became a promising target for gold exploration in Egypt. Semi-massive to massive sulfide deposits occur in quartz-carbonate exhalite and as disseminated grains in metabasalt and …
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Gold in Volcanic-Hosted Massive Sulfide Deposits
It should be noted that lens of cooper and zinc-sulfides of the Honghai VMS deposit have significant amounts of gold and silver (Table 1), and could be classified as gold-rich volcanogenic massive ...
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Precious metal enrichment processes in volcanogenic massive sulphide
Volcanogenic massive sulphide deposits contain precious metals (Au, Ag) that can be present in high to low grades and total amounts; depending on tonnage and/or precious metal grade, such deposits ...
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Volcanogenic Massive Sulfide
Volcanogenic massive sulfide (VMS) deposits, together with their close analogs, sedimentary-exhalative massive sulfide deposits, have accounted for more than half of global production of …
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(PDF) Tectonics of Volcanogenic Massive Sulphide (VMS) …
Gold-rich Fe-Cu-Zn volcanogenic massive sulfide deposits occur within strata of probable Jurassic age on Rapu Rapu Island in Albay Province, Philippines. Massive sulfides at the Ungay Malobago and Hixbar deposits are spatially associated with dacitic volcanic rocks within a highly-deformed sequence of mafic volcanic and quartzofeldspathic ...
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Volcanogenic Massive Sulfide
Volcanogenic massive sulfide (VMS) deposits, together with their close analogs, sedimentary-exhalative massive sulfide deposits, have accounted for more than half of global production of Zn and Pb, 7% of Cu, and a significant amount of silver, gold, and other by-product metals. This article examines the essential elements of the VMS genetic ...
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Volcanogenic Massive Sulfide Deposits Enriched in Gold
Volcanogenic massive sulfide deposits contain not only Cu, Zn, and Pb, but Sb, Bi, Te, Se Ag, Co, other metals, and variable amounts of Ag and Au. In some of these, gold reserves exceed 100 t, while the gold grade reaches several dozens ppm. An original database was used to establish statistically meaningful criteria for identification of deposits with large gold reserves …
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