(PDF) Volcanogenic Massive Sulphide– Oxide Gold

The 0.85–0.55 Ga Arabian - Nubian Shield of northeast Africa comprises an assemblage of volcanic arc and sub-arc strata that are fertile for …

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Volcanogenic Massive Sulphide Ore Deposits

Volcanogenic Massive Sulphide Ore Deposits

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Controls on the siting and style of volcanogenic massive …

Volcanogenic massive sulphide deposits formed in a restricted number of geologic settings that reflect the existence of different geochemical traps. The largest deposits formed …

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Metavolcanic host rocks, mineralization, and gossans of the Shaib …

The WBMD massive sulphide deposits are inter- preted to be stratiform (Jackaman 1972;Beziatand Donzeau 1989).Duetothedeformation,theextentto which the massive sulphides were precipitated at the seafloor in a mound or in the subseafloor as replace- ments (Genna et al. 2014b;Piercey2015;Tornoset al. 2015) is unclear.

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Volcanogenic Massive Sulphide Deposits

There is typically a mound-shaped to tabular, stratabound body composed principally of massive (>40%) sulphide, quartz and subordinate phyllosilicates and iron oxide minerals and altered silicate wallrock. These stratabound bodies are typically underlain by discordant to semi-concordant stockwork veins and disseminated sulphides.

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Vectoring Volcanogenic Massive Sulphide Mineralization at the …

Gale et al (1997) established REE patterns for exhalite, including layered sulphide ores, solid sulphides and footwall alteration zones in and around various volcanogenic massive sulphide (VMS) deposits, and proposed that REE data could be used to vector VMS mineralization. Rare earth element patterns typically associated with VMS mineral-

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Volcanogenic Massive Sulphide Deposits

Cu-Fe sulphides with Zn, Au and Ag known as volcanogenic massive sulphides (VMS) occur as massive, disseminated and vein mineralizations in volcanosedimentary rocks, volcanics, gabbroid...

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volcanogenic strata bound massive sulphides,

The comparison of strata-bound massive sulfide deposits, Abstract The Zlaté Hory ore deposits — as an example of volcanogenic, strata-bound, massive, base-metal sulfides occurring in the Devonian formations of the Jeseníky Mts — are compared with distinctive Phanerozoic types representing this type of ore deposit, ie, with Kuroko-type, Rosebery-type, Besshi-type and …

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MASSIVE SULPHIDE DEPOSITS

VMS Volcanogenic Massive Sulphide Deposits and Ni-Cu-Co Type Magmatic Massive Sulphide Deposits Volcanic-associated massive sulphide (VMS) deposits occur throughout the world and throughout the geological time column in virtually every tectonic domain that has submarine volcanic rocks as an important constituent.

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VMS-Volcanogenic-Massive-Sulphide-Ore-Deposit.pdf

vms deposits • volcanogenic massive sulfide (vms), volcanic-hosted massive sulfide (vhms), volcanic- and sediment-hosted massive sulfide (vshms),volcanic-associated massive sulfide (vams), etc. • lenses and sheets of massive sulfide that form from seafloor hydrothermal systems where metal-rich fluids (black smoke)precipitate on (exhalative) or …

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Volcanogenic Massive Sulphide (VMS) Base Metal …

Volcanic massive sulphide deposits are accumulations of metal sulphides that precipitate from heated hydrothermal fluid associated with volcanically active under-sea environments. The volcanic activity typically …

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Volcanogenic Massive Sulfide Occurrence Model

Massive ore in volcanogenic massive sulfide deposits consists of greater than 40 percent sulfides, usually pyrite, pyrrhotite, chalcopyrite, sphalerite, and galena; non-sulfide gangue typically consists of quartz, barite, anhydrite, iron oxides, …

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Volcanogenic Massive Sulphide Deposits | PDF | Magma

Volcanogenic massive sulphide (VMS) deposits are VMS deposits form at, or near, the seafloor through the also known as volcanic-associated, volcanic-hosted, and vol- focused discharge of hot, metal-rich hydrothermal fluids. For cano-sedimentary-hosted massive sulphide deposits. They this reason, VMS deposits are classified under the general

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Deformation and metamorphism of massive sulphides at Sulitjelma, Norway

The copper-bearing stratabound pyritic massive sulphide bodies contained in metamorphosed basic eruptives of Ordovician age at Sulitjelma in Nordland County, Norway, form one of the important fields of sulphide mineralisation within the Köli Nappe Complex.

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volcanogenic strata bound massive sulphides,

Early Proterozoic volcanogenic massive sulfide deposits in Wisconsin; an overview Theodore A DeMatti Theodore A DeMatti 10-353rd Avenue NW, Cambridge, MN, United States, …

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[PDF] Volcanogenic massive sulfide deposits

V olcanogenic massive sulfide deposits are strata-bound ac- cumulations of sulfide minerals that precipitated at or near the sea floor in spatial, temporal, and genetic association with

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Massive sulfide deposits

The term "massive sulfide" is mainly applied to the following classes of ore deposits: Volcanogenic massive sulfide ore deposits (VMS), also called volcanic-hosted massive sulfide deposits (VHMS) Sedimentary exhalative deposits (SEDEX), also called sediment-hosted massive sulfide deposits

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volcanogenic massive sulfide | geology | Britannica

In mineral deposit: Volcanogenic massive sulfides. Wherever volcanism occurs beneath the sea, the potential exists for seawater to penetrate the volcanic rocks, become heated by a magma chamber, and react with the enclosing rocks—in the process concentrating geochemically scarce metals and so forming a hydrothermal solution. When such….

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Volcanogenic Massive Sulfide Occurrence Model

Volcanogenic massive sulfide deposits range in size from small pods of less than a ton (which are commonly scattered through prospective terrains) to supergiant accumulations like Rio Tinto (Spain), 1.5 billion metric tons; Kholodrina …

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volcanogenic strata bound massive sulphides,

Volcanogenic Massive Sulfide Deposits in the East Pontic, volcanogenic and sedimentary pyrites,, deposit consists of strata-bound stockworks, short veins, .... VOLCANOGENIC MASSIVE SULPHIDE DEPOSITS A G G,,

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Deformation and metamorphism of massive sulphides at …

The copper-bearing stratabound pyritic massive sulphide bodies contained in metamorphosed basic eruptives of Ordovician age at Sulitjelma in Nordland County, Norway, form one of the important fields of sulphide mineralisation within the Köli Nappe Complex.

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Massive sulfide deposits

Massive sulfide deposits are ore deposits that have significant stratiform ore bodies consisting mainly of sulfide minerals. Most massive sulfide ore deposits have other portions that are …

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VMS Volcanogenic Massive Sulphide Ore Deposits …

The massive sulphide is made up of a combination of finely interbedded sulphides that settle out of the black smokers and fragments of chimneys that have broken off and rolled down the slope. Here are couple of …

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Volcanic Associated Massive Sulfide Deposits

9781629490151 ISBN print: 1887483527 Publication date: January 01, 1997 Volcanic-associated massive sulfide deposits (VMS) are predominantly stratiform accumulations of sulfide minerals that precipitate from hydrothermal fluids at or below the sea floor, in a wide range of ancient and modern geological settings (Figs. 1, 2).

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The geological setting of volcanogenic sulphide orebodies in Albanian

It includes a 25-km long belt of a significant longitudinal continuity of mineralization between Chafe Mal and Reps. Massive sulphide ores underlain by disseminated veins and stockworks are hosted by a Middle–Upper Jurassic lower basalt–andesite succession at Reps, Spach, Maja e Made, Tuch, Lak Rosch, Paluce and Fushe Arres.

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Gold-rich Volcanogenic Massive Sulphide Deposits

The 21A zone consists of strata bound to stratiform lenses of semi massive to massive stibnite and realgar whereas the 21B zone is a stratiform sulphide-sulphosalt zinc-lead-gold silver zone. The sedimentary textures of the stratiform 21B zone are consistent with its detrital origin (Fig. 11) (Poulsen et al., 2000).

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Massive sulphides « World Ocean Review

Massive sulphides occur around the world at plate boundaries. Geologists distinguish 4 different typical areas of origin for hydrothermal vents and the associated massive sulphides: AT MID-OCEAN RIDGES: Mid-ocean ridges are mountain ranges in the ocean that circle the globe like the seam on a baseball.

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VMS Volcanogenic Massive Sulphide Ore Deposits

In the cross section of the Solwara 1 VMS based on mapping and drilling of deposits we can see the massive sulphides in red, the alterations …

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volcanogenic strata bound massive sulphides,

A thematic issue on the geological setting and genesis of volcanogenic massive sulfide (VMS) deposits, 10 July 2011 # Springer-Verlag 2011 Volcanogenic massive sulfide (VMS) deposits are strata- arc marine basins The VMS deposits occur within these bound accumulations of sulfide minerals that precipitat- extensional basins, at one or a few .

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Stratigraphic-volcanic setting of massive sulfide deposits in the

Abstract The Cambrian Mount Read Volcanics of western Tasmania host the volcanic-hosted massive sulfide (VHMS) deposits at Hellyer, Que River, Rosebery, Hercules, and Mount Lyell. The volcanics were erupted along, and partly onto, the western margin of a Precambrian basement terrane now represented by the Tyennan region.

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