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  • Massive Sulfide an overview ScienceDirect Topics

    Massive Sulfide An Overview Sciencedirect Topics

    Mar 03, 2012 The massive sulfide bodies may be located within felsic basement gneiss up to 30 m below the basal contact of the intrusion, or within the intrusion, up to 20 m above the basal contact (Figs. 3.3.5 and 3.3.9). They range in size from about 1

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    Massive Sulphide Deposits Earth Sci

    The massive sulphide ovoid is the focus of attention its surface plan is roughly circular and about 300 metres in diameter and it extends to a maximum depth of more than 100 m. Explorationists, then, are looking for a body of rock about the size of the Rocks Area in Sydney and the height of a 10 storey building, which may be deeply buried under gravel and/or rock

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  • Volcanogenic Massive Sulphide Ore Deposits

    Volcanogenic Massive Sulphide Ore Deposits

    Volcanogenic massive sulphide (VMS) deposits are also known as volcanic-associated, volcanic-hosted, and vol-cano-sedimentary-hosted massive sulphide deposits. They typically occur as lenses of polymetallic massive sulphide that form at or near the seafloor in submarine volcanic envi-ronments. They form from metal-enriched fluids associated

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    Volcanicassociated Massive Sulfide Deposits

    Massive sulfide deposits with associated carbonate alteration assemblages that are easily accessible to acid water are less likely to produce acid drainage. Nature of ore Massive sulfide deposits, by definition, contain zones or lenses of massive sulfide minerals, many with sulfide mineral contents exceeding 90 volume percent.

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  • VMS Volcanogenic Massive Sulphide Ore Deposits

    Vms Volcanogenic Massive Sulphide Ore Deposits

    Apr 24, 2015 The massive sulphide material varies from 1- 70 meters thick, this is unusual as most VMS deposits are less than 20 meters in thickness. Bisha is a footprint thats about 1 kilometre long and 200 meters wide. In spite of the steep dip to the mineralization which results in a pit with a high stripping ratio the deposit has one big advantage.

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  • Massive deepsea sulphide ore deposits discovered

    Massive Deepsea Sulphide Ore Deposits Discovered

    Feb 01, 1979 Massive ore-grade zinc, copper and iron sulphide deposits have been found at the axis of the East Pacific Rise. Although their presence on the deep ocean-floor had been predicted there was no...

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  • 7 Geophysical Characteristics of Volcanogenic Massive

    7 Geophysical Characteristics Of Volcanogenic Massive

    massive sulfide ore body and may be associated with clays, which also produce significant IP responses (Ford and others, 2007). The techniques associated with electromagnetic (EM) surveys, collected both on ground and in air, are the most common electrical methods employed in mineral exploration.

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  • Gold upgrading in metamorphosed massive sulfide ore

    Gold Upgrading In Metamorphosed Massive Sulfide Ore

    The metamorphosed Boliden volcanic-hosted massive sulfide (VHMS) ore deposit, northern Sweden, is characterized by an abundance of massive arsenopyrite ore and unusually high gold enrichments (up to 300600 g/t) in crosscutting veins and fracture zones.

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    Gold And Pge In Massive Sulfide Ore Of The

    The Uzelginsk deposit in the southern Urals, in Russia, is an example of a weakly altered classical massive sulfide deposit of the Uralian type. Pyritic CuZn ore contains gold in two main modes so-called invisible gold in sulfides, and mineral forms represented by native gold and tellurides.

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  • Sulfidesilicate textures in magmatic NiCuPGE

    Sulfidesilicate Textures In Magmatic Nicupge

    Oct 01, 2018 Massive ores consist of upward of 90% sulfide by volume, with variable but typically low proportions of oxides, and are commonly free of silicate inclusions altogether, particularly where massive sulfide pools are more than a few metres thick.

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  • The Cu Stockwork and Massive Sulfide Ore of the

    The Cu Stockwork And Massive Sulfide Ore Of The

    consists of 55 million metric tons of Zn-Pb-Cu massive sulfide overlying a Cu-rich stockwork. The massive ore is overlain by up to 30 m of feldspar-phyric, rhyolitic volcaniclastic rock and locally by a jasper and/or chert layer up to 15 m thick. The massive sulfide orebody consists dominantly of pyrite, sphalerite, galena, chalcopyrite,

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    The Massive Sulfide Occurrences In Wisconsin

    THE MASSIVE SULFIDE OCCURRENCES FOUl massive sulfide OCCUXIences have been identified in northern Wisconsin (Table 2). Si,nce 1968, wi,th the di,scovery near Ladysmith in Rusk County of a massive sulfi.de ore body, over three dozen mining companies have at one time or another explored for non-ferrous massive sulfide deposits in the Precambrian

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  • Massive Sulfide Ore Deposits Articles Scientific

    Massive Sulfide Ore Deposits Articles Scientific

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  • Weak elasticwave scattering from massive sulfide

    Weak Elasticwave Scattering From Massive Sulfide

    Massive sulfide ore deposits, traditionally the target of electromagnetic or potentialfield geophysical investigations, can potentially be recognized and mapped using seismic methods based on their scattering response. To characterize the seismic expression of massive sulfide orebodies, I review formulas that describe elasticwave ...

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  • Multistage sulfide evolution of the Moran Ni sulfide ore

    Multistage Sulfide Evolution Of The Moran Ni Sulfide Ore

    Oct 05, 2021 The amount of sulfides in basal sulfide-matrix breccia ore was added to massive sulfides as the breccia sulfides represent part of the massive sulfide pool (Barnes et al. 2018). The sulfur content of sulfide-matrix breccia and net-textured ore was used to calculate the amount of sulfides within the specific drill interval.

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  • Hydrothermal models for the generation of massive sulfide

    Hydrothermal Models For The Generation Of Massive Sulfide

    Request PDF Hydrothermal models for the generation of massive sulfide ore deposits The discovery of massive sulfide ore deposits at certain sites at

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  • Sulfide Ore Article about Sulfide Ore by The Free Dictionary

    Sulfide Ore Article About Sulfide Ore By The Free Dictionary

    A distinction is made between massive ores, in which sulfides are predominant, and disseminated ores, in which nonsulfide minerals are predominant. Sulfide ores may be simple or complex. Complex sulfide ores containing sulfides of copper, zinc, and lead are especially common, as are complex copper, nickel, cobalt, antimony, and mercury ores.

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  • Volcanogenic Massive Sulfide Deposits EzineArticles

    Volcanogenic Massive Sulfide Deposits Ezinearticles

    Massive Sulfide Ore Deposits. Volcanogenic massive sulfide deposits also known as VMS deposits are among the most highly mined all orders in the world. They are found on all the continents, and are fossilized black smokers found associated with global rift systems or spreading centers.

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  • Interspinifex Ni sulfide ore from Victor SouthMcLeay

    Interspinifex Ni Sulfide Ore From Victor Southmcleay

    May 06, 2020 These ores are developed as so-called hanging wall ores in open contact positions (i.e. outside pinchouts), where massive sulfide overlies the top of older internally differentiated flows. In both cases, the sulfide in the interspinifex ore can clearly be identified as having percolated down from an overlying massive sulfide pool.

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  • Physical properties and seismic imaging of massive

    Physical Properties And Seismic Imaging Of Massive

    Laboratory studies show that the acoustic impedances of massive sulfides can be predicted from the physical properties (V p, density) and modal abundances of common sulfide minerals using simple mixing relations.Most sulfides have significantly higher impedances than silicate rocks, implying that seismic reflection techniques can be used directly for base metals exploration,

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  • Beneficiation of Seafloor Massive Sulfides by Liquid

    Beneficiation Of Seafloor Massive Sulfides By Liquid

    May 28, 2021 Geology and Mineralogy of Massive Sulfide Ores From the Central Okinawa Trough, Japan, Econ. Geol., 88 (8), pp. 2210 ...

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  • Academics in Massive Sulfide Ore Academiaedu

    Academics In Massive Sulfide Ore Academiaedu

    View Academics in Massive Sulfide Ore on Academia.edu.

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  • Traceelement systematics and isotopic characteristics of

    Traceelement Systematics And Isotopic Characteristics Of

    Jul 01, 2021 The Paleoproterozoic volcanogenic massive sulfide (VMS) deposits in the Betul belt (BB) (ca.1.7 Ga) in central India are well-known for their low-grade Zn-Cu-Pb sulfide mineralization. The physicochemical conditions of ore formation, size, grade, extent, and nature of mineralization are the ongoing debates and concerns to the exploration ...

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  • Aurich bimodalmafic type volcanogenic massive sulphide

    Aurich Bimodalmafic Type Volcanogenic Massive Sulphide

    Request PDF Au-rich bimodal-mafic type volcanogenic massive sulphide deposit associated with Jurassic arc volcanism from the Central Pontide (Kastamonu, Turkey) The

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  • VMS Volcanogenic Massive Sulphide Ore Deposits

    Vms Volcanogenic Massive Sulphide Ore Deposits

    Apr 24, 2015 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. Lets look now at a few examples of VMS deposits. Nevsuns Bisha deposit near Eritrea is a superb example of a VMS deposit.

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  • Massive sulfide ore mineral density gcm 3 and magnetic

    Massive Sulfide Ore Mineral Density Gcm 3 And Magnetic

    Download Table Massive sulfide ore mineral density (g/cm 3 ) and magnetic susceptibility (10 3 Sl). from publication Geophysical Characteristics of Volcanogenic Massive Sulfide Deposits ...

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  • Frontiers Inactive Sulfide Ecosystems in the Deep Sea A

    Frontiers Inactive Sulfide Ecosystems In The Deep Sea A

    Massive sulfide ores of the Troodos have been of economic importance since at least the time of the Phoenicians, an observation that underscored early speculations about and current interest in the economic potential of sulfide deposits on the modern seafloor (Bischoff et al., 1983 Monecke et al., 2016 Petersen et al., 2016a, 2018).

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  • Mineralogy Textures and Relative Age Relationships of

    Mineralogy Textures And Relative Age Relationships Of

    massive sulfide mineralization during the Permian. Introduction IN recent years, detailed studies by Barton (1978), Eldridge (1981), and Eldridge et al. (1983) of the mineralogy and textures of ore in the relatively pris- tine Kuroko-type massive sulfide deposits have re- suited in a dramatic revision in the understanding of

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  • Deformation and metamorphism of massive sulphides at

    Deformation And Metamorphism Of Massive Sulphides At

    Jul 05, 2018 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 Kli Nappe Complex.

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  • Geology and mineralogy of massive sulfide ores from the

    Geology And Mineralogy Of Massive Sulfide Ores From The

    Massive sulfide ores were collected from active and inactive vents and smokers and from mounds of the hydrothermal Jade field in the central Okinawa trough (Japan), which is a tectonically active intracontinental back-arc basin located in the northwestern Pacific.

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  • The Cu stockwork and massive sulfide ore of the Feitais

    The Cu Stockwork And Massive Sulfide Ore Of The Feitais

    The massive ore is overlain by up to 30 m of feldspar-phyric, rhyolitic volcaniclastic rock and locally by a jasper and/or chert layer up to 15 m thick. The massive sulfide orebody consists dominantly of pyrite, sphalerite, galena, chalcopyrite, tetrahedrite-tennantite, arsenopyrite, and bournonite, together with minor quartz, chlorite ...

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  • Volcanogenic massive sulphide deposits SlideShare

    Volcanogenic Massive Sulphide Deposits Slideshare

    Apr 15, 2016 Volcanogenic massive sulphide deposits 1. Volcanogenic Massive Sulphide Ore DepositsVolcanogenic Massive Sulphide Ore Deposits Presented byPresented by Mostafa Abdel-Azim Mohamed MasoudMostafa Abdel-Azim Mohamed Masoud Supervision bySupervision by Dr. Ahmed Mohamed ZayedDr.

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  • What is Sulfide Mining Mining Action Group

    What Is Sulfide Mining Mining Action Group

    Metallic sulfide mining (aka hard rock mining) is the practice of extracting metals such as nickel, gold and copper from a sulfide-rich ore body. Sulfides are a geologic byproduct of mining in this area, and by exposing sulfides to the air and water in our atmosphere, sulfuric acid can be created threatening to poison the nearby water ...

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  • mineral Sulfides Britannica

    Mineral Sulfides Britannica

    mineral - mineral - Sulfides This important class includes most of the ore minerals. The similar but rarer sulfarsenides are grouped here as well. Sulfide minerals consist of one or more metals combined with sulfur sulfarsenides contain arsenic replacing some of the sulfur. Sulfides are generally opaque and exhibit distinguishing colours and streaks. (Streak is the colour of a

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  • Partial Melting of Massive Sulfide Ore Bodies During

    Partial Melting Of Massive Sulfide Ore Bodies During

    Most massive sulfide ore bodies metamorphosed at greenschist or lower amphibolite facies contain rather simple assemblages of pyrite, pyrrhotite, chalcopyrite, sphalerite galena. In contrast, sulfide ore deposits metamorphosed at higher grades contain the same minerals along with a complex assortment of minor phases, including sulfosalts ...

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