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copper sulfide representative

2020-07-20T20:07:22+00:00
  • Copper sulfide - Wikipedia

    OverviewKnown copper sulfidesClasses of copper sulfidesOxidation states of copper and sulfurSee alsoExternal links

    Copper sulfides describe a family of chemical compounds and minerals with the formula CuxSy. Both minerals and synthetic materials comprise these compounds. Some copper sulfides are economically important ores. Prominent copper sulfide minerals include Cu2S (chalcocite) and CuS (covellite). In the mining industry, the minerals bornite or chalcopyrite, which consist of mixed copper-iron sulfides, are often referred to as "

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  • Copper(I) sulfide - Wikipedia

    Copper (I) sulfide is a copper sulfide, a chemical compound of copper and sulfur. It has the chemical compound Cu 2 S. It is found in nature as the mineral chalcocite. It has a narrow range of stoichiometry ranging from Cu 1.997 S to Cu 2.000 S.

  • Chemical formula: Cu₂S
  • Max Resource : Reports Assays of 3.3% Copper Over 25 ...

    2020-10-07  New Discovery at AM South: Located approximately 1.0-kilometre south of AM-3, consists of 7 first pass composite representative grab sample locations over 400-metres of mineralization; all 7 were over 25-metre intervals with assays ranging from 0.3% to 2.1% copper. The New Discovery remains open, and will be resampled as a series of continuous chip channels, mapped and

  • Copper Sulfide - an overview ScienceDirect Topics

    Copper sulfide ores must be concentrated before they can be economically transported and smelted. The universal technique for this concentration is froth flotation of finely ground ore. Froth flotation entails attaching fine Cu-sulfide mineral particles to bubbles and floating them out of a water–ore mixture.

  • Copper Sulfide Mining - Earthworks

    In 2012, state and federal documents were reviewed for fourteen copper sulfide mines representing 89% of U.S. copper production in 2010 – the most recent data on copper production available from the U.S. Geological Survey. These mines provided a representative view of the types of environmental impacts resulting from the development of copper sulfide deposits, focusing on pipeline spills ...

  • Frontiers Copper Sulfide Nanoparticles-Incorporated ...

    Moreover, nano-formed copper such as copper sulfide nanoparticles (CuS NPs) is capable of photothermal therapy induced by near-infrared (NIR) light irradiation which would be effective in killing bacteria as a non-resistant and minimally invasive process (Zhou et al., 2015; Feng et al., 2019).

  • Cited by: 1
  • Copper Ore Types: Sulfides vs. Oxides An Investor's ...

    2019-05-29  Copper sulfide ores are typically the most profitable types of copper ores to mine. That is because they have high copper content, and the copper

  • Frontiers Copper Sulfide Based Heterojunctions as ...

    Copper sulfide powder, containing predominant crystalline phases CuS and Cu 1.8 S (digenite), was synthesized via the photochemical method and thin films of Cu x S, TiO 2 and coupled Cu x S/TiO 2 was deposited on the Limestone by doctor blade technique.

  • Cited by: 6
  • Copper oxy-sulfide and copper sulfate thin films as ...

    2018-05-01  The morphology of the Cu 2 O and CuS layers is illustrated in Fig. 2, which includes representative AFM images and scan lines that evidence a higher roughness for the sulfide surface. The largest vertical features are ∼15 nm for Cu 2 O and above 30 nm for CuS, in the same order than the respective crystallite size determined by XRD.

  • Cited by: 5
  • The science is clear: copper sulfide... - Representative ...

    The science is clear: copper sulfide mining is directly linked to significant environmental and public health impacts. Despite this incontrovertible link, the Trump Administration in 2018 reversed an...

  • Galileo continues its hunt for Fraser Range nickel discovery

    2020-10-06  The company intersected significant nickel-copper sulphide mineralisation. This substantially advanced the company along the exploration path and provided new insights to build up the exploration model and prepare for the next round of drilling to begin. Core samples from the diamond drilling program are now at the laboratory with assay results pending. Disseminated, blebby and banded sulphide ...

  • GAL intersects nickel-copper sulphide in diamond drilling

    2020-09-09  This includes 23m of heavily disseminated, blebby and banded nickel-copper sulphides in ultramafic host rock from Lantern South (drill hole LARC013D), and 16m of disseminated and blebby sulphide within an overall 108m zone of disseminated sulphide in gabbronorite host rock from Lantern East (drill hole LARC008D).The source of the conductive anomaly adjacent to sulphide in LARC008D

  • Copper activation option for a pentlandite–pyrrhotite ...

    2016-05-30  Different sulphide ores respond differently in the prospect of copper activation to thiols for froth flotation. With the BCL Selebi-Phikwe ore body, pentlandite–pyrrhotite–chalcopyrite co-occur and there is the constraint of fine pentlandite dissemination in the pyrrhotite, so that liberation is limited. In the presence of pentlandite, pyrrhotite can even be galvanically depressed.

  • Electrodeposition of nanowires of a high copper content ...

    However, the abundance and relatively low toxicity of copper sulfide make it a promising candidate for diverse applications in numerous fields including energy harvesting and storage, 4–8 photocatalysis, 9,10 optoelectronics, 11–14 sensors, as well as in microbiology, 15 and medical diagnostics 16–18 and therapy. 19–21 Various stoichiometries, phases, and morphologies of copper sulfide ...

  • PROCEDURE TO CONSIDER FOR FUSING COPPER/IRON SULFIDE ...

    consists in fusing a representative sample of copper sulfide concentrates according to different procedures. Considering the large availability of fluxes, chemical additives and fusion instruments on the market, how can an analyst design a fusion procedure without multiplying trials? A factorial plan is used here to minimize the number of trials. It estimates the influence of several factors ...

  • Trump pushes mining with order, but effects are uncertain ...

    2020-10-01  FILE - This Feb. 9, 2016, file photo is the Hull-Rust Mahoning Mine viewed from the overlook in Hibbing, Minn. The Trump administration is seeking to

  • Copper Sulfate Pentahydrate - Chem One - Industrial ...

    The Copper Sulfate Crystals label gives instructions under the heading “CALCULATIONS OF ACTIVE INGREDIENT TO BE ADDED” for calculating the amount of Copper Sulfate Pentahydrate to treat 1 acre-foot of water with 2 ppm Copper Sulfate Pentahydrate. The amount listed is 5.44 lbs. Thus, for a 2 ppm concentration, to treat a 1 acre pond with an average depth of 4 feet, 5.44 lbs x 4 (21.76 lbs ...

  • SYNTHESIS OF COPPER SULFIDE (CuS) THIN FILMS BY A SOLID ...

    Copper sulfides are p-type semiconductors which have various stoichiometric forms that are stable at room temperature, ranging from sulfur rich (CuS) to copper rich (Cu 2 S) [3-7]. The band gaps of CuxS thin films are reported in the range of 1.2 to 2.6 eV but these values can

  • Flotation of a copper sulphide ore from Okiep using thiol ...

    A copper ore from the Okiep Copper Company in the Okiep area of the Northern Cape province of South Africa was used in all tests. Its average copper grade was 1.8% and mineralogy showed that the main copper sulphide was bornite (Table I). Other copper sulphides noted were chalcocite, chalcopyrite, digenite and possibly enargite.

  • Original Research Catalytic Efficiency of ...

    The representative ore sample was ground to fine powder to pass through a 200-mesh 30ºC are comparable. The results of the present study concluded that the bioleaching can be a suitable alternative for conventional hydrominerological processing of low-grade copper ores. Keywords: bioleaching, copper sulfide ore, chalcocite, covalite, acidophilic iron- and sulfur-oxidizing bacterium ...

  • Copper activation option for a pentlandite–pyrrhotite ...

    2016-05-30  Hydrophilic Cu(OH) 2 precipitates at the surface of sulphide grains and bring about depression with increase in the copper hydroxide species in the pulp. This frustrates formation of the metal polysulfide on the grains that needs activation, as well as xanthate interaction for all the sulphides, such that even chalcopyrite is depressed. About this optimum dosage, the Fe content in the

  • GAL intersects nickel-copper sulphide in diamond drilling

    2020-09-09  Galileo Mining Ltd has intersected significant nickel-copper sulphide mineralisation and in its first diamond drilling program at the Lantern Prospect at the Fraser Range Nickel Belt of Western Australia.This diamond drilling at priority targets at Lantern has substantially advanced the company along the exploration path and provided new insights to prepare for the next round of drilling to begin.

  • Copper Sulfate Pentahydrate - Chem One - Industrial ...

    Copper wire (feed stock can be copper telephone wire with the plastic stripped away or motor turnings), is reacted with technical grade sulfuric acid solution and air to produce copper sulfate and water. This reaction is done in a tower or vat, where heated sulfuric acid solutions and air can be circulated through the copper wire. Copper sulfate crystals precipitate from the acid solution and are collected. The

  • Electrodeposition of nanowires of a high copper content ...

    Copper thiourea complexes (CTCs) are well-known single source precursors for copper sulfide nanocrystals. CTCs are chelate complexes of the form [Cu (tu) n ]X y, with tu as a symbol for the thiourea ligand H 2 N–CS–NH 2 and X representing coordinated anions such as

  • Copper Sulfide Nanoparticles Theranostics Bioz

    Copper Sulfide Nanoparticles, supplied by Theranostics, used in various techniques. Bioz Stars score: 91/100, based on 2 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more

  • copper sulfide mining lvgaldieri

    Tag Archives: copper sulfide mining “America is Not a Company”: Lowenthal Questions Nedd on the Boundary Waters. 2 Replies “documents that have already been released”: the February 2017 email from Michael Nedd that Representative Lowenthal used for today’s line of questioning. One of the documents I obtained from the Department of Interior through a Freedom of Information Act ...

  • Preliminary Model of Porphyry Copper Deposits

    Sulfide, supergene, and alteration mineralogy in a representative selection of porphyry-style copper deposits, worldwide.....48 4. Alteration-mineral assemblages in the Copper Mountain (British Columbia, Canada) and El Teniente (Chile) porphyry copper deposits .....54. 1 Preliminary Model of Porphyry Copper Deposits Byron R. Berger, Robert A. Ayuso, Jeff C. Wynn, and Robert R. Seal ...

  • New fronts in the fight against copper mining — Friends of ...

    2020-05-20  Representative Betty McCollum (left) receives Friends of the Boundary Waters Wilderness 2018 Conservation Award from Board Chair Margo Brownell. Though met with immediate opposition from allies of the copper-sulfide mining industry, the bill has gained bipartisan support.

  • Original Research Catalytic Efficiency of ...

    The representative ore sample was ground to fine powder to pass through a 200-mesh 30ºC are comparable. The results of the present study concluded that the bioleaching can be a suitable alternative for conventional hydrominerological processing of low-grade copper ores. Keywords: bioleaching, copper sulfide ore, chalcocite, covalite, acidophilic iron- and sulfur-oxidizing bacterium ...

  • Insights into Extinct Seafloor Massive Sulfide Mounds at ...

    Representative sulfide samples obtained by HyBIS from extinct sulfide mound from the TAG area. ( A ) Chimney with a chalcopyrite-rich orifice surrounded by Cu-Fe-rich sulfides, New M. #2, 55-1. ( B ) Chimney wall fragment comprising marcasite that is intimately intergrown with sphalerite and pyrite, and is coated by amorphous silica (not visible on hand specimen scale), New M. #2, 55-3.

  • Electrodeposition of nanowires of a high copper content ...

    Copper thiourea complexes (CTCs) are well-known single source precursors for copper sulfide nanocrystals. CTCs are chelate complexes of the form [Cu (tu) n ]X y, with tu as a symbol for the thiourea ligand H 2 N–CS–NH 2 and X representing coordinated anions such as

  • Copper activation option for a pentlandite–pyrrhotite ...

    2016-05-30  Different sulphide ores respond differently in the prospect of copper activation to thiols for froth flotation. With the BCL Selebi-Phikwe ore body, pentlandite–pyrrhotite–chalcopyrite co-occur and there is the constraint of fine pentlandite dissemination in the pyrrhotite, so that liberation is limited.

  • copper sulfide mining lvgaldieri

    Tag Archives: copper sulfide mining “America is Not a Company”: Lowenthal Questions Nedd on the Boundary Waters. 2 Replies “documents that have already been released”: the February 2017 email from Michael Nedd that Representative Lowenthal used for today’s line of questioning. One of the documents I obtained from the Department of Interior through a Freedom of Information Act ...

  • COPPER SULFIDE MINING - Earthworks

    In 2012, state and federal documents were reviewed for fourteen copper sulfide mines representing 89% of U.S. copper production in 2010 – the most recent data on copper production available from the U.S. Geological Survey. These mines provided a representative view of the types of environmental impacts resulting from the development of copper sulfide deposits, focusing on pipeline spills ...

  • DFL Central Committee passes resolution for copper-nickel ...

    The push for the DFL to officially oppose copper-nickel mining first came to a head in December 2016 at the Central Committee gathering in Lakeville, Minn. In the hallway of the city’s high school, where the meeting was held, some Iron Range leaders went back-and-forth on tabling the resolution and allowing it to resurface down the road.

  • Investigation of Affecting Parameters on Heap Leaching ...

    Reducing Acid Consumption of Low Grade Oxide-Sulfide Copper Ore and operating costs and simple atmospheric leach process make heap leaching suitable for low grade ores and small deposits. Disadvantages include low recoveries, long ramp-up times, large footprint and acid-mine drainage of wastes [6]. Ore and gangue mineralogy is probably the most important parameter affecting the

  • Sulfur-Modified Copper Catalysts for the Electrochemical ...

    Carbon-supported copper sulfide particles with controlled size were prepared following a wet chemistry approach. A sound protocol was developed in this study in view of the lack of available routes aimed at nanoparticulated sulfide materials.

  • Insights into Extinct Seafloor Massive Sulfide Mounds at ...

    These angular sulfide blocks are generally coated by a thin weathering crust (Figure 3 C), comprising iron-oxyhydroxides, jarosite, and copper chloride (atacamite/paratacamite). Figure 3. Photographs of seafloor features observed at extinct seafloor massive sulfides (eSMS) sites in the Trans-Atlantic Geotraverse (TAG) hydrothermal area.

  • COPPER SULPHIDE CERTIFIED REFERENCE MATERIAL OREAS 992

    OREAS 992 is a copper sulphide certified reference material (CRM) prepared from a nickel matte by-product during the refining process at a nickel refinery. It has been prepared, packaged and certified by Ore Research Exploration P/L.

  • RECOVERY OF COPPER FROM OXIDE COPPER ORE BY

    Copper occurs in nature as native copper Cu or in minerals as copper sulphides like chalcopyrite and chalcocite, the copper carbonates like azurite and malachite, and copper oxides like cuprite. There are more than 170 copper bearing minerals known 10 to 15 of which are economically being mined.

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