Relevant bibliographies by topics / Cobalt and copper

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Cobalt and copper'

Author: Grafiati
Published: 3 June 2025
Last updated: 22 June 2025

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Journal articles on the topic "Cobalt and copper"

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Guo, Lian, Jianwen Han, Eric Yakobson, Wenbo Shao, Kyle Whitten, and Elie Najjar. "Recent Advances in Electrodeposition of Copper Ultrathin Films on Cobalt Substrate." ECS Meeting Abstracts MA2022-02, no. 23 (2022): 955. http://dx.doi.org/10.1149/ma2022-0223955mtgabs.

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As the miniaturization trend in integrated circuits fabrication continues, alternative liner materials in copper interconnects have been actively explored. Cobalt has been widely investigated and employed due to its low resistance at nanoscales, integration compatibility, as well as benefit of improving copper electromigration resistance. However, direct electrodeposition of copper onto cobalt remains less explored due to the stability issue of cobalt in acidic copper damascene process. Subsequent processes of copper seeding and copper electroplating face increasing technical difficulties when widths and aspect ratios of electro-fill features become more challenging. Direct electrodeposition of copper on cobalt has been explored in acidic and alkaline chemistries, both of which were formulated by MacDermid Alpha Semiconductor Solutions. In both cases, well-adherent, nearly-pinhole-free, and ultrathin Cu has been successfully electrodeposited onto cobalt substrate with less than 10% cobalt loss. SEM images in Figure 1 imply uniform dispersion of copper on cobalt. XRF and ICP analysis confirm that the thinnest copper films deposited could be no thicker than 2 nm. Corrosion test in acidic copper plating bath shows that an ultrathin copper layer of thickness less than 2 nm can effectively suppress cobalt dissolution by a factor of three in comparison to non-coated bare cobalt. This work could pave the avenue towards direct copper electrodeposition onto cobalt liner in semiconductor manufacturing for advanced technology nodes. Figure 1. Top-down SEM images. (left) As-received cobalt substrate; (center) Cu of 2 nm nominal thickness electrodeposited on cobalt from an acidic solution; (right) Cu of 2 nm nominal thickness electrodeposited on cobalt from an alkaline solution. All three images have the same scale and scale bars are 200 nm. Figure 1
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(Mrs.), V. A. JADHAV, and VANDRE. "2,7 -Dichloroquinoline-3-carbaldehyde Thiosemicarbazone as an Analytical Reagent for Cobalt(II) and Copper(II)." Journal of Indian Chemical Society Vol. 69, Nov 1992 (1992): 791–92. https://doi.org/10.5281/zenodo.6044492.

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Department of Chemistry. Shivaji University, Kolhapur-416 004 <em>Manuscript received 18 June 1988, revised 15 July 1992, accepted 12 August 1992</em> 2,7 -Dichloroquinoline-3-carbaldehyde Thiosemicarbazone as an Analytical Reagent for Cobalt(II) and Copper(II). &nbsp;
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(MRS.), V. A. JADHAV, and M. U. KULKARNI (Ms.). "7-Methyl-2-chloroquinoline-3-carbaldehyde Thiosemicarbazone as Analytical Reagent for Copper,-Cobalt--and Nickel(II)." Journal of Indian Chemical Society Vol. 69, May 1992 (1992): 287–88. https://doi.org/10.5281/zenodo.6089420.

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Department of Chemistry, Shivaji University, Kolhapur-416 001 <em>Manuscript received 1 August 1988, revised 11 September 1989, accepted 1 April 1992</em> 7-Methyl-2-chloroquinoline-3-carbaldehyde Thiosemicarbazone as Analytical Reagent for Copper,-Cobalt--and Nickel(II).&nbsp;
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Zhou, Fengbo, Bo Wu, and Jianhua Zhou. "Novel Spectrophotometric Method for Robust Detection of Trace Copper and Cobalt in High-Concentration Zinc Solution." Molecules 29, no. 23 (2024): 5765. https://doi.org/10.3390/molecules29235765.

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In the purification process of zinc hydrometallurgy, the spectra of copper and cobalt seriously overlap in the whole band and are interfered with by the spectra of zinc and nickel, which seriously affects the detection results of copper and cobalt in zinc solutions. Aiming to address the problems of low resolution, serious overlap, and narrow characteristic wavelengths, a novel spectrophotometric method for the robust detection of trace copper and cobalt is proposed. First, the Haar, Db4, Coif3, and Sym3 wavelets are used to carry out the second-order continuous wavelet transform on the spectral signals of copper and cobalt, which improves the resolution of copper and cobalt and eliminates the background interference caused by matrix zinc signals and reagents. Then, the information ratio and separation degree are defined as optimization indexes, a multi-objective optimization model is established with the wavelet decomposition scale as a variable, and the non-inferior solution of multi-objective optimization is solved by the state transition algorithm. Finally, the optimal second-derivative spectra combined with the fine zero-crossing technique are used to establish calibration curves at zero-crossing points for the simultaneous detection of copper and cobalt. The experimental results show that the detection performance of the proposed method is far superior to the partial least squares and Kalman filtering methods. The RMSEPs of copper and cobalt are 0.098 and 0.063, the correlation coefficients are 0.9953 and 0.9971, and the average relative errors of copper and cobalt are 3.77% and 2.85%, making this method suitable for the simultaneous detection of trace copper and cobalt in high-concentration zinc solutions.
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Sanpo, Noppakun, James Wang, and Christopher C. Berndt. "Sol-Gel Synthesized Copper-Substituted Cobalt Ferrite Nanoparticles for Biomedical Applications." Journal of Nano Research 22 (May 2013): 95–106. http://dx.doi.org/10.4028/www.scientific.net/jnanor.22.95.

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Copper-substituted cobalt ferrite nanoparticles were prepared via a sol-gel route using citric acid as a chelating agent. The influence of copper concentration on the microstructure, crystal structure and antibacterial property of copper-substituted cobalt ferrite nanoparticles against E. coli and S. aureus has been systematically investigated. The results indicate that the substitution of copper influences strongly the microstructure, crystal structure, particle diameter and antibacterial property of cobalt ferrite nanoparticles.
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Sanpo, Noppakun, James Wang, and Christopher C. Berndt. "Sol-Gel Synthesized Copper-Substituted Cobalt Ferrite Nanoparticles for Biomedical Applications." Journal of Nano Research 25 (October 2013): 110–21. http://dx.doi.org/10.4028/www.scientific.net/jnanor.25.110.

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Copper-substituted cobalt ferrite nanoparticles were prepared via a sol-gel route using citric acid as a chelating agent. The influence of copper concentration on the microstructure, crystal structure and antibacterial property of copper-substituted cobalt ferrite nanoparticles against E. coli and S. aureus has been systematically investigated. The results indicate that the substitution of copper influences strongly the microstructure, crystal structure, particle diameter and antibacterial property of cobalt ferrite nanoparticles.
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Yang, Wei Jiao, Cheng Yan Wang, Bao Zhong Ma, Zhong Wang, Yong Qiang Chen, and Fei Yin. "Recovery of Cobalt from Copper Converter Slag by a Selective Reduction-Roasting Process." Advanced Materials Research 550-553 (July 2012): 2186–89. http://dx.doi.org/10.4028/www.scientific.net/amr.550-553.2186.

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An industrial converter slag was treated by a selective reduction-roasting process to recovery cobalt and copper in this study. To maximizing the recovery of cobalt and copper, the major process parameters such as reducing agent, curing agent and roasting temperature were investigated. Under the determined conditions, 95% cobalt and 96% copper can be recovered. According to the mineralogical analysis, it is found that cobalt in the converter slag mainly distributes in the iron-bearing minerals, which migrates with iron during the reduction-roasting process. After the reduction-roasting, most cobalt distributes in the metallic iron in the form of Co-Fe alloy.
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Flores-Lasluisa, Jhony Xavier, Javier Quílez-Bermejo, Ana Cristina Ramírez-Pérez, Francisco Huerta, Diego Cazorla-Amorós, and Emilia Morallón. "Copper-Doped Cobalt Spinel Electrocatalysts Supported on Activated Carbon for Hydrogen Evolution Reaction." Materials 12, no. 8 (2019): 1302. http://dx.doi.org/10.3390/ma12081302.

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The development of electrocatalysts based on the doping of copper over cobalt spinel supported on a microporous activated carbon has been studied. Both copper–cobalt and cobalt spinel nanoparticles were synthesized using a silica-template method. Hybrid materials consisting of an activated carbon (AC), cobalt oxide (Co3O4), and copper-doped cobalt oxide (CuCo2O4) nanoparticles, were obtained by dry mixing technique and evaluated as electrocatalysts in alkaline media for hydrogen evolution reaction. Physical mixtures containing 5, 10, and 20 wt.% of Co3O4 or CuCo2O4 with a highly microporous activated carbon were prepared and characterized by XRD, TEM, XPS, physical adsorption of gases, and electrochemical techniques. The electrochemical tests revealed that the electrodes containing copper as the dopant cation result in a lower overpotential and higher current density for the hydrogen evolution reaction.
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Zhang, Zhiwei, Xiang Zhao, and Sadahiro Tsurekawa. "Diffusion in Copper/Cobalt Systems under High Magnetic Fields." Materials 14, no. 11 (2021): 3104. http://dx.doi.org/10.3390/ma14113104.

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Comprehensive research on a high magnetic field’s effect on diffusion is lacking; hence, this study investigates the effect of the magnetization of such a field on diffusion using a copper/cobalt diffusion couple in the diamagnetic/ferromagnetic states, respectively. The diffusion couple was formed using explosive welding to avoid diffusion during manufacturing. The diffusion couple annealed within a temperature range of 1165–1265 K under a 0–6-T high magnetic field. The angle between the diffusion and magnetic field directions was set as 0° and then 180°. The penetration profiles of cobalt volume diffusion in the copper and grain-boundary diffusion of copper in cobalt were constructed using an electron probe micro analyzer. The high magnetic field increased the volume diffusivity of cobalt in copper, but had no evident effect on the grain-boundary diffusivity of copper in cobalt, irrespective of the magnetic field direction. An Arrhenius plot of the cobalt volume diffusivity in copper demonstrated that the applied high magnetic field enhanced diffusion by changing the frequency factor rather than the activation energy; this can be attributed to the increased diffusion entropy caused by changing the vacancy concentration, which resulted from the introduction of magnetization under a high magnetic field.
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Zeng, Gui Sheng, Ming Jing Li, and Yu Xie. "Influencing Factors and Mechanism of Cobalt Redissolution from Zinc Sulphate Solution." Advanced Materials Research 402 (November 2011): 12–16. http://dx.doi.org/10.4028/www.scientific.net/amr.402.12.

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Redissolution of cemented cobalt from zinc sulphate solution occurs, and is a well known problem among zinc producers. A variety of mechanism of cobalt redisisolution have been proposed in the literatures, however, it is still not very well understood. The influencing factors of cobalt redissolution such as detention time, oxidation, particle size of zinc dust and copper ion have been investigated in this paper. The redissolution does not occur when very large particles are used but the redissolution of cobalt is significant from small zinc particles. The redissolution is obvious with copper ion added, while the redissolution is not occurred from the zinc sulphated solution without copper ion added. The redissolution mechanism of cobalt is obtained.
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Dissertations / Theses on the topic "Cobalt and copper"

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England, Craig Dennis. "Properties of cobalt/copper and cobalt/palladium multilayers." Diss., The University of Arizona, 1991. http://hdl.handle.net/10150/185707.

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The physical properties of Co/Cu and Co/Pd magnetic multilayers have been studied. The Co/Cu multilayers were prepared by sputtering, while the Co/Pd multilayers were made by sputtering and molecular beam epitaxy (MBE). Various x-ray diffraction techniques have been used to study the structure of the multilayers. Magnetometry techniques were used to study the magnetic properties. Various optical techniques have been used to investigate the magneto-optical properties. Brillouin light scattering spectroscopy was used to determine the effective elastic constants of the Co/Cu multilayers and the magnetic properties of the sputtered Co/Pd multilayers.
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Numprasanthai, Apisit Chemical Sciences &amp Engineering Faculty of Engineering UNSW. "Binary skeletal copper-cobalt catalysts." Publisher:University of New South Wales. Chemical Sciences & Engineering, 2009. http://handle.unsw.edu.au/1959.4/43587.

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Binary skeletal metal catalysts were made by starting with a ternary alloy. The percursor alloys and catalysts were characterised using Optical Microscopy, X-ray Diffractometer, Scanning Electron Microscopy, Inductively Coupled Plasma (ICP) and BET surface area in term of morphologies, phase identification, surface area and pore structure. Skeletal copper catalyst presented high surface areas and consisted primarily of CuAl2 grains, with small well-dispersed areas of the Al-CuAl2 eutectic. The CuAl2 phase, which represented a tetragonal structure, showed large cell volumes resulted in a fine skeleton structure. Binary nickel-copper catalyst composed of three majority phases including Ni2Al3, Cu4NiAl7 and Al. The Cu4NiAl7 was found to be a caustic resistant phase which led to low surface area in the nickel-copper catalyst In terms of the selective removal of aluminium from the copper-cobalt-aluminium alloy to create the binary copper-cobalt catalyst, 11 alloy samples with various compositions were produced following the ternary phase diagram. The surface area and pore size of these catalysts was dependant on the crystal structure of the phases present and the amount of remaining Al. Electrochemical glucose oxidation and carbon dioxide reduction activity have been used for testing the catalyst performance. The electrochemical oxidation of glucose experiment using 11 samples of skeletal Cu-Co catalyst as an electrode showed the results that the significant oxidation peaks were observed in sample 1, 4, 8, 9 and the small oxidation humps were observed in other sample except sample 2. These small peaks resulted from that the glucose molecule had difficulty to absorb on the surface area of the skeletal Cu-Co catalysts electrode. The difficulty may results from very fine pore volume and pore size of the catalysts. In term of assessing the skeletal Cu-Co catalyst with electrochemical reduction of carbon dioxide experiment, the skeletal Cu-Co catalyst sample 7 which presented the highest surface area was selected as an electrode to compare with Cu foil electrode. The result of using skeletal Cu-Co as an electrode indicated significantly higher current. This results from that a skeletal Cu-Co catalyst electrode presented an actual high surface area which leads to more adsorbed regions.
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Setna, R. P. "Study of the decomposition of copper-cobalt alloys." Thesis, University of Oxford, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.239277.

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Richards, G. M. "Deformation processes during creep of copper-cobalt alloys." Thesis, Swansea University, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.638656.

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Suggu, Santosh Kumar. "Modeling the electrodeposition process of copper on cobalt chrome." Thesis, Wichita State University, 2014. http://hdl.handle.net/10057/10983.

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A simulation is a computer program that helps in creating a real time abstract model of a process. Using simulations the costs of conducting experiments have come down and this has achieved flexibility in terms of optimizing parameters and durations. Electrodeposition is a process that uses electrical current to reduce dissolved metal cations from anode so that they form a metal coating on cathode. Electrodeposition is widely used for many applications varying from anti-corrosion coatings, decorative purposes to high precision nanotechnology cloaking devices. The objective of this research was to predict the electrodeposition of copper on cobalt chrome enabling an efficient optimization of the deposition. The main governing equation used for this model was mass species conservation. COMSOL, finite element software was used to solve the governing equations. The model was simulated to predict coating thickness under different conditions such as, varying current density, concentration and deposition durations. Experiments were conducted to validate the results from the simulation. Electrodeposition was carried in an electrochemical cell with Co- Cr as cathode and Cu as anode with CuSO4 as an electrolyte. Coating thickness was determined using scanning electron microscope (SEM) and thickness gauge. There was an increasing trend in thickness in the both model and experiment when there was increase in current density. Decreasing trend was observed in the thickness in both model and experiment when there was reduction in the conductivity of the electrolyte. Model predicted results of the experiment at lower durations, at higher durations the experimental values deviated from the predicted values. These variations in the results were due to the limitations in the model and experimental verification methods, which could be worked in the future to reduce the variability.<br>Thesis (M.S.)--Wichita State University, College of Engineering, Dept. of Industrial and Manufacturing Engineering
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Cooper, Joshaniel Francis Keany. "Electrodeposition, magnetism and growth studies of cobalt, nickel and copper." Thesis, University of Cambridge, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.610316.

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Mukhtar, Hassan. "Novel technology for the simultaneous recovery of metals from and the destruction of organic molecules in aqueous systems." Thesis, Brunel University, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.311238.

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Jiang, Xiong. "Electrochemical studies on the cementation of copper and cobalt with zinc." Thesis, Jiang, Xiong (1987) Electrochemical studies on the cementation of copper and cobalt with zinc. PhD thesis, Murdoch University, 1987. https://researchrepository.murdoch.edu.au/id/eprint/118/.

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The work described in this thesis deals mainly with a fundamental study of two cementation reactions, i.e., Cu(II)/Zn and Co(II)/Zn, using the electrochemical techniques of linear potential sweep voltammetry, cyclic vol tammetry, chronopotentiometry (stripping), capacitance measurements,ring current measurements and impedance spectroscopy. In addition, solution analysis, x-ray diffraction and scanning electron microscopy were employed to achieve a better understanding of the kinetics and mechanisms of the two cementations. The half reactions of the two systems were also investigated as an essential part of the whole study. Of the two systems investigated, the Cu(II)/Zn system, was mainly used as a reference system on which some of the new techniques could be proved. The Cu(II)/Zn reaction has been shown to be diffusion controlled. Five methods, including solution analysis, have been used to determine the rate of reaction. The values of the rate constants thus determined were in good agreement provided allowance was made for the nonstoichiometry of this reaction due to proton displacement by zinc. The Co(II)/Zn cementation reaction, though thermodynamically highly favourable, is kinetically very sluggish. Of the factors affecting this reaction, the solution pH was found to play a substantial role. For example, while the reaction is largely under chemical control, at pH 5 the reaction rate becomes limited by the speed at which cobalt(I1) ions diffuse to the reacting metal surface. The favourable influence of a higher pH on the reduction of cobalt(II) carried out either electrochemically or chemically using zinc powder was ascribed to the increasing formation of the electrochemically active species, CoOH+ . Increasing the temperature also favours the shift from chemical control to diffusion control. Values for the rate constants of the Co(II)/Zn reaction in the absence of added zn2+ ions were determined from Evans' diagram, chronopotentiometry and impedance spectroscopy, The reasons for the differences in the values of rate thus obtained were discussed. The presence of zinc ions in the reaction solution greatly suppressed the rate of Co(II)/Zn cementation reaction. Several factors have been identified as contributing to the reduced reaction rate. These are the double layer effect, zinc ion and hydrogen atom adsorption, and precipitation of basic zinc salts which blanket the reacting metal surface. The action of compounds such as Sb(III) and As(III), which are commonly used to activate the Co(II)/Zn reaction in the presence of large amounts of zn2+, was investigated mainly by impedance spectroscopy. From the similarity of the impedance spectra for the reaction i n the presence of benzoqui none, it was inferred that one role of the activators was to suppress the formation of adsorbed hydrogen on the reacting surface and to allow a higher concentration of the active species, COOH'.
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Jiang, Xiong. "Electrochemical studies on the cementation of copper and cobalt with zinc." Murdoch University, 1987. http://wwwlib.murdoch.edu.au/adt/browse/view/adt-MU20060816.135721.

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The work described i n this thesis deals mainly with a fundamental study of two cementation reactions, i.e., Cu(II)/Zn and Co(II)/Zn, using the electrochemical techniques of linear potential sweep voltammetry, cyclic vol tammetry, chronopotentiometry (stripping), capacitance measurements,ring current measurements and impedance spectroscopy. In addition, solution analysis, x-ray diffraction and scanning electron microscopy were employed to achieve a better understanding of the kinetics and mechanisms of the two cementations. The half reactions of the two systems were also investigated as an essential part of the whole study. Of the two systems investigated, the Cu(II)/Zn system, was mainly used as a reference system on which some of the new techniques could be proved. The Cu(II)/Zn reaction has been shown to be diffusion controlled. Five methods, including solution analysis, have been used to determine the rate of reaction. The values of the rate constants thus determined were in good agreement provided allowance was made for the nonstoichiometry of this reaction due to proton displacement by zinc. The Co(II)/Zn cementation reaction, though thermodynamically highly favourable, is kinetically very sluggish. Of the factors affecting this reaction, the solution pH was found to play a substantial role. For example, while the reaction is largely under chemical control, at pH 5 the reaction rate becomes limited by the speed at which cobalt(I1) ions diffuse to the reacting metal surface. The favourable influence of a higher pH on the reduction of cobalt(II) carried out either electrochemically or chemically using zinc powder was ascribed to the increasing formation of the electrochemically active species, CoOH+ . Increasing the temperature also favours the shift from chemical control to diffusion control. Values for the rate constants of the Co(II)/Zn reaction in the absence of added zn2+ ions were determined from Evans' diagram, chronopotentiometry and impedance spectroscopy, The reasons for the differences in the values of rate thus obtained were discussed. The presence of zinc ions in the reaction solution greatly suppressed the rate of Co(II)/Zn cementation reaction. Several factors have been identified as contributing to the reduced reaction rate. These are the double layer effect, zinc ion and hydrogen atom adsorption, and precipitation of basic zinc salts which blanket the reacting metal surface. The action of compounds such as Sb(III) and As(III), which are commonly used to activate the Co(II)/Zn reaction in the presence of large amounts of zn2+, was investigated mainly by impedance spectroscopy. From the similarity of the impedance spectra for the reaction i n the presence of benzoqui none, it was inferred that one role of the activators was to suppress the formation of adsorbed hydrogen on the reacting surface and to allow a higher concentration of the active species, COOH'.
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McGowan, Ross. "The origin of the Nchanga copper-cobalt deposits of the Zambian copperbelt." Thesis, University of Southampton, 2003. https://eprints.soton.ac.uk/402419/.

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Books on the topic "Cobalt and copper"

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Wang, Shuisheng. Electrodeposition of copper-cobalt alloys and copper-nickel alloys and pulse plating of copper-cobalt alloys. s.n.], 1989.

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Jeffers, T. H. Cobalt recovery from copper leach solutions. U.S. Dept. of the Interior, Bureau of Mines, 1985.

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O, Dannenberg R., ed. Recovery of cobalt and copper from complex sulfide concentrates. U.S. Dept. of the Interior, Bureau of Mines, 1987.

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Bennett, P. G. Recovery of cobalt from spent copper leach solutions: Improved elution and impurity removal techniques, with revised process economics. U.S. Dept. of the Interior, 1988.

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G, Ri͡a︡bko A., and Gosudarstvennyĭ proektnyĭ i nauchno-issledovatelʹskiĭ institut nikelʹ-kobalʹtovoĭ promyshlennosti (Soviet Union)., eds. Razvitie teoreticheskikh osnov metallurgicheskikh prot͡s︡essov proizvodstva nikeli͡a︡, kobalta i medi: Sbornik nauchnykh trudov. Gos. proektnyĭ i nauchno-issl. in-t Gipronikel, 1991.

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Bennett, P. G. Recovery of cobalt from spent copper leach solutions: Improved elution and impurity removal techniques, with revised process economics. U.S. Dept. of the Interior, Bureau of Mines, 1988.

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O, Dannenberg R., ed. Recovery of cobalt and copper from complex sulfide concentrates. U.S. Dept. of the Interior, 1987.

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United States. Bureau of Mines. Recovery of Cobalt and Copper From Complex Sulfide Concentrates. s.n, 1987.

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Paul E. Queneau International Symposium. Extractive metallurgy of copper, nickel and cobalt: Proceedings of the Paul E. Queneau International Symposium, sponsored by the Extraction and Processing Division of TMS and the Metallurgical Society of the Canadian Institute of Mining, Metallurgy and Petroleum (CIM). Minerals, Metals & Materials Society, 1993.

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Kandji, Ladain. L'exploitation manuelle du cuivre et du cobalt au Katanga: Décadence ou progrès? Éditions Baobab, 2010.

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Book chapters on the topic "Cobalt and copper"

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Turchanin, Mikhail, and Tamara Velikanova. "Cobalt – Copper – Iron." In Iron Systems, Part 2. Springer Berlin Heidelberg, 2008. http://dx.doi.org/10.1007/978-3-540-74196-1_19.

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Roop II, R. Martin, John E. Baumgartner, Joshua E. Pitzer, and Daniel W. Martin. "Magnesium, Copper and Cobalt." In Metals and the Biology and Virulence of Brucella. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-53622-4_6.

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Predel, B. "Co - Cu (Cobalt - Copper)." In B - Ba … Cu - Zr. Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-540-44756-6_156.

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Deng, Tong, and Yunhan Ling. "Reclamation of Cobalt and Copper from Copper Converter Slags." In Electrometallurgy and Environmental Hydrometallurgy. John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118804407.ch72.

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Faucon, Michel-Pierre, Olivier Pourret, and Bastien Lange. "Element Case Studies: Cobalt and Copper." In Agromining: Farming for Metals. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-61899-9_13.

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Uahengo, Foibe D. L., Yotamu R. S. Hara, Rainford Hara, Nachikonde Fumpa, Alexander Old, and Golden Kaluba. "Leaching Cobalt from a Nickel-Containing Copper-Cobalt Zebesha Ore." In Characterization of Minerals, Metals, and Materials 2022. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-92373-0_13.

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Pfaltz, Andreas. "Enantioselective Catalysis with Chiral Cobalt and Copper Complexes." In Modern Synthetic Methods. Springer Berlin Heidelberg, 1989. http://dx.doi.org/10.1007/978-3-642-83758-6_3.

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Arora, Gitanjali, Nirmala Kumari Jangid, Anamika Srivastava, Navjeet Kaur, and Jaya Dwivedi. "Cobalt, Copper, and Rhodium Containing Polymer-supported Catalyst." In Polymer Supported Organic Catalysts. CRC Press, 2024. http://dx.doi.org/10.1201/9781003039785-14.

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Hara, Yotamu R. S., Golden Kaluba, Douglas Musowoya, et al. "Leaching of Copper, Cobalt, and Nickel from Complex Ore." In The Minerals, Metals & Materials Series. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-36628-5_21.

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Pardasani, R. T., and P. Pardasani. "Magnetic properties of copper(II) cobalt(II) heterobimetallic hydrogenselenite." In Magnetic Properties of Paramagnetic Compounds. Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-49202-4_42.

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Conference papers on the topic "Cobalt and copper"

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Shao, Yun-Hao, Zi-Hong Ni, Gui Chen, Hao Wang, and Xin-Ping Qu. "Low contact resistance copper-copper bonding with selective electroless plating cobalt interlayer." In 2024 IEEE International Interconnect Technology Conference (IITC). IEEE, 2024. http://dx.doi.org/10.1109/iitc61274.2024.10732083.

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Al-Hashem, A., H. Tarish, A. Akbar, and N. Tanoli. "The Effect of Ultrasonically Induced Cavitation Conditions on the Behavior Copper and Cobalt-Based Alloys in Seawater." In CORROSION 2008. NACE International, 2008. https://doi.org/10.5006/c2008-08228.

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Abstract A cavitation facility was used to study the cavitation corrosion behavior of carbon steel (UNS G10200), Cu-Ni 70-30 (UNS C96400), and cobalt-based alloy (UNS R30006) in seawater. The work included measurements of free corrosion potentials, and mass loss in presence and absence of cavitation. The cavitation tests were made at a frequency of 20 KHz and at temperatures of 25°C. Cavitation conditions caused a noble shift in the free corrosion potential for carbon steel and an active one for Cu-Ni 70-30 and cobalt-based alloys. Cavitation also increased the rate of mass loss of these alloys by several orders of magnitude with respect to stagnant conditions. Cavitation made the surface of these alloys very rough, exhibiting large cavity pits in the middle region of the attacked area as revealed by the scanning electron microscope (SEM). Mechanical factors were determined to be the leading cause of metal loss.
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Chandler, C., Jeh-Beck Ju, R. Atanasoski, and W. H. Smyrl. "Corrosion and Electrodissolution Studies of Copper and Cobalt with Microelectrodes and the Quartz Crystal Microbalance." In CORROSION 1989. NACE International, 1989. https://doi.org/10.5006/c1989-89037.

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Abstract The electrodissolution of cobalt in gas saturated 0.1 N H2SO4 was studied with a rotating disk electrode (RDE) and microband electrodes. No mass transport effect was found. The corrosion rates obtained by voltammetry were very close to those obtained with the Quartz Crystal Microbalance (QCM). Copper electrodissolution in gas saturated 0.1 N HCl was influence by mass transport. Different current densities were obtained for a RDE at different rotating speeds or for a microdisk electrode where spherical diffusion enhanced mass transport.
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Nune, Divya, and P. Venkat Ramana. "Comparative Study of Copper and Cobalt Loaded Multi-Patch Rectangular Antenna for Multi Band Frequencies." In 2024 International Conference on Communication, Control, and Intelligent Systems (CCIS). IEEE, 2024. https://doi.org/10.1109/ccis63231.2024.10932119.

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Aylor, D. M., R. A. Hays, R. M. Kain, and R. J. Ferrara. "Crevice Corrosion Performance of Candidate Naval Ship Seawater Valve Materials in Quiescent and Flowing Natural Seawater." In CORROSION 1999. NACE International, 1999. https://doi.org/10.5006/c1999-99329.

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Abstract A wide range of alloys is being evaluated for use in a new generation of seawater valves for the U.S. Navy. This new generation of valves is being developed to reduce valve life cycle costs and to ensure materials compatibility with advanced seawater piping materials such as commercially pure titanium. Part of the evaluation includes assessing the corrosion performance of candidate valve materials. Crevice corrosion performance is of particular interest since valves are connected to shipboard piping systems with flanges and since valves contain numerous internal crevices. Crevice corrosion tests were performed in constant temperature, natural seawater under both quiescent and flowing conditions. Bronze, copper-nickel, and nickel-copper alloys, which are currently used in Navy valves, were used as standards by which the performance of stainless steel, nickel-base, titanium, and cobalt alloys could be measured. No crevice corrosion was observed on any of the titanium or cobalt alloys tested while the stainless steel and nickel-base alloys ranged from fully resistant to highly susceptible. Wrought alloys were typically more resistant to crevice corrosion than their cast equivalents.
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Maubane, Precious, and Michel Kalenga. "RECOVERY OF GERMANIUM FROM COPPER SLAG USING SILICOTHERMIC PROCESS." In 24th SGEM International Multidisciplinary Scientific GeoConference 2024. STEF92 Technology, 2024. https://doi.org/10.5593/sgem2024v/4.2/s17.18.

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The depletion of primary raw materials and the demand in High Tech has played a big role in finding new ways of getting raw materials including recycling. Germanium being a semi-conductor currently in high demand is being sourced from secondary materials. The purpose of this project was to recover Germanium from copper slag in the presence of pure silicon using the carbothermic reduction process. The experiment was designed using Minitab software with Taguchi as the tool for statistical analysis and to design the experiment. The working temperature was kept constant at 1350 degrees Celsius and the mass of silicon, slag basicity and residence time in the furnace were investigated with the response being recovery of germanium to determine the optimum conditions under which there is a high recovery of Germanium as per the conducted experiments. The findings of this experiment are that the conditions that yield a high recovery of Germanium are 0,008 mass of pure silicon, 0,8 basicity and the optimum time was found to be 120 minutes. In this investigation targeted to meet the sustainable research and development goal of implementation of circular economy by virtue of recycling metallurgical waste that goal. Moreover, from the carbothermic reduction cobalt and copper were recovered consequently. The optimum conditions were tested using the main effects, interaction, and sensitivity to noise ratio plots all from Taguchi.
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Turn, John C. "Corrosion Behavior of Beryllium Copper in Simulated Industrial Environments." In CORROSION 1989. NACE International, 1989. https://doi.org/10.5006/c1989-89337.

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Abstract Samples of commerical lots of rolled temper beryllium copper C17200 were selected with average surface roughnesses, Ra, of 1 and 5 microinch. Some of the material with 5 microinch Ra was roughened to produce strip with a 12 microincn Ra. These lots of material were cleaned and exposed to laboratory environments at Battel 1 e-Columbus Laboratories. A flowing mixed gas was used to simulate a typical office or warehouse environment and a severe industrial environment tor exposures of 0.5, 1, 2 and 5 d. Other coupons were plated with 20, 50, 100 and 200 microinch of cobalt-hardened gold and exposed to these same environments for j d Profilometry and scanning electron microscopy indicate that the original surface finish of the C17200 was uniform. The corrosion rate of clean, unplated beryllium copper was independent of the Ra over the range of 1 to 12 microinch. The visual appearance of gold plated beryllium copper showed similar corrosion behavior for surface roughnesses of 1 and 5 microinch. Corrosion appeared slightly greater on plated surfaces with an Ra of 12 microinch. Increasing the qold thickness on C17200 reduced the amount of corrosion for gold thicknesses between 20 and 200 microinch. Pore corrosion and creep corrosion from corroded pores were observed for a 5 d exposure in both simulated environments.
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Tyreman, C. J., and Peter Elliott. "High Temperature Metallic Corrosion in HF-Containing Gases." In CORROSION 1988. NACE International, 1988. https://doi.org/10.5006/c1988-88135.

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Abstract The performance of pure metals (nickel, copper, cobalt, iron, chromium, molybdenum, niobium and tantalum) has been studied in anhydrous hydrogen fluoride (AHF) and in equimolar AHF/steam. These short (10 hour) isothermal tests at 850C (1562F) were compared with 50 hour exposures of selected iron-and nickel-base alloys in a 10% steam mixture with AHF. Nickel base alloys were generally better than the iron-base materials which corroded rapidly by internal fluoridation and heavy oxide formation resulting from pyrohydrolysis of fluorides. Reactive elements such as niobium were deleterious for some nickel-base alloys. The refractory metals were completely destroyed in the ten hour tests.
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Bogar, Frederic D., and Miller H. Peterson. "A Comparison of the Pitting Tendency of Commercial Alloys in 3.5 Percent Sodium Chloride Solution and in Natural Seawater." In CORROSION 1985. NACE International, 1985. https://doi.org/10.5006/c1985-85207.

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Abstract Pitting potentials and cyclic potentiodynamic polarization behavior has been determined in sodium chloride solution for a number of stainless steels and other iron, nickel, cobalt and copper based alloys. The predicted corrosion behavior was then compared with the known long term behavior of specimens cut from the same sheet. In general agreement was good except for AL6X and Inconel 718. AL6X would have been predicted to be inert, but specimens from the same sheet suffered crevice corrosion during long term exposures. Inconel 718 would also have been predicted to be highly resistant to pitting and crevice corrosion but performed poorly in long term exposure to seawater.
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Jaeger, Paul. "Adsorbed Inhibitor Fragments Observed on Alloyed Thin Films Identified by TOF-SIMS." In CORROSION 2001. NACE International, 2001. https://doi.org/10.5006/c2001-01199.

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Abstract Time-of-Flight Secondary Ion Mass Spectroscopy TOFSIMS was used to identify the different fragmented species associated with the adsorption of a triazole based inhibitor on alloyed thin films. Copper, cobalt-iron, nickel-manganese, and nickel-iron alloyed films were immersed in an inhibited aqueous solution. Inspection of the positive and negative spectra indicated different fragmented complexes of the inhibitor. In some cases the primary metal of the alloy was where the inhibitor fragments adsorbed thus excluding or lightly covering the secondary alloy. In many cases there are different and unique ratios of inhibitor fragments to metal sites. The different ratios could equate to the protection efficacy of the inhibitor per metal protected and add insight to the bonding of the inhibitor to the substrate. In addition, it is suspected that alloy selection may have an impact on the efficacy of an inhibitor.
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Reports on the topic "Cobalt and copper"

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Cawood, T. K., and J. M. Peter. The geology of critical battery metals: a spotlight on Co in VMS deposits and Li in pegmatites. Natural Resources Canada/CMSS/Information Management, 2024. http://dx.doi.org/10.4095/332348.

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As we move away from a fossil fuel-driven economy, the demand for metals used in energy-dense, rechargeable batteries is increasing; these include cobalt and lithium. Although cobalt is mostly obtained as a by-product from nickel and copper mining, significant amounts also occur in volcanogenic massive sulfide (VMS) deposits, of which Canada has many. However, the primary controls on cobalt distribution in VMS deposits are poorly understood, and may be affected by deformation and metamorphism. We show that cobalt can occur in pyrite, which retains its primary composition through greenschist facies metamorphism; and in pyrrhotite, which expels some cobalt during deformation to form cobaltite crystals. In contrast, most of the global lithium supply is derived from rare metal pegmatites and salars, with pegmatites the most important Canadian source. Our preliminary results confirm that lithium-bearing pegmatites can form directly during anatexis, as well as from fractional crystallization of large bodies of granitic magma.
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Crain, J. S., A. M. Essling, and J. T. Kiely. Determination of labile copper, cobalt, and chromium in textile mill wastewater. Office of Scientific and Technical Information (OSTI), 1997. http://dx.doi.org/10.2172/501517.

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Peter, J. M., and S. D. Scott. Mineralogy and Geochemistry of the Windy Craggy Copper - Cobalt - Gold Massive Sulphide Deposit, northwestern British Columbia Canada. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1991. http://dx.doi.org/10.4095/132328.

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Shen, Wei, and Chuchu Fu. China’s Engagement with DRC’s Critical Minerals Sector: Extractivism, Developmentalism, and the Quest for a Just Transition. Institute of Development Studies, 2024. http://dx.doi.org/10.19088/ids.2024.032.

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This Working Paper explores the multifaceted Chinese engagement in the Democratic Republic of the Congo's (DRC) copper and cobalt mining sector. We identified two distinctive approaches for such engagement: one led by central state-owned enterprises (CSOEs) and state-backed policy financial institutions (S-PFIs), and the other by a mix of public and private Chinese companies. The paper argues that while the former approach is embedded with a developmentalist ideology by aiming to utilise resource income to promote infrastructure development, the latter follows a typical extractivist logic of profit maximisation via mineral exports. It suggests that the developmentalist and extractivist approaches have generated significant socio-economic impacts on DRC's development trajectory at the national and local levels. Both pathways also face distinctive challenges in the context of regime and policy changes in DRC in recent years. Therefore, the quest for a just transition in DRC’s mining sector warrants a better understanding of different models of Chinese engagement in this critical sector at a rather distinctive historical juncture.
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Corriveau, L., and E. G. Potter. Advancing exploration for iron oxide-copper-gold and affiliated deposits in Canada: context, scientific overview, outcomes, and impacts. Natural Resources Canada/CMSS/Information Management, 2024. http://dx.doi.org/10.4095/332495.

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The Geo-mapping for Energy and Minerals (GEM) and Targeted Geoscience Initiative (TGI) programs conducted extensive collaborative research on mineral systems with iron oxide-copper-gold (IOCG) and affiliated deposits in prospective settings of Canada. Regional alteration mapping as well as geochemical and geophysical modelling undertaken under the GEM program documented the evolution of polymetallic metasomatic systems with iron-oxide and alkali-calcic alteration and led to an increased recognition of the mineral potential of poorly explored areas and historic deposits of the Great Bear magmatic zone in the Northwest Territories, thus providing a solid framework for exploration. Early and barren albitite corridors form across the mineral systems and locally host uranium mineralization associated with telescoping of alteration facies by tectonic activity during the metasomatic growth of the systems. Subsequent to albitization, high-temperature Ca-Fe and Ca-K-Fe alteration form iron oxide-apatite (± rare-earth element) mineralization and IOCG variants rich in cobalt and other critical metals, respectively. Systems that further mature to K-Fe alteration form IOCG mineralization and can evolve to mineralized near-surface phyllic alteration and epithermal caps. Transitional facies also host polymetallic skarn mineralization. Rare-earth element enrichments within iron oxide-apatite zones are strongest where remobilization has occurred, particularly along deformation zones. The TGI projects documented the pertinence for a GEM activity in the Great Bear magmatic zone and subsequently synthesized GEM geoscientific data into a system-scale, ore-deposit model, and outlined criteria for mineral resource assessment. This model, and newly developed field-mapping and lithogeochemical tools were shown to be efficient mineral exploration and regional mapping methods in Canada and were also applied to the archetype IOCG deposit, Olympic Dam, and other deposits in the Olympic Cu-Au metallogenic province of Australia. Case examples also include the Romanet Horst in the Trans-Hudson Orogen (second phase of GEM), the Central Mineral Belt in Labrador (TGI), the Wanapitei Lake district in Ontario (private sector exploration results used by TGI), and the Bondy gneiss complex in Quebec (TGI).
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Geologic logs and core assays of 14 nickel, copper, and cobalt exploratory holes from the Mirror Harbor Prospect of Fleming and Chichagof Islands. Alaska Division of Geological & Geophysical Surveys, 1991. http://dx.doi.org/10.14509/19021.

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The Use of heavy-mineral concentrate data to show geochemical favorability for zinc-lead-silver and copper-(cobalt) mineral occurrences in the Baird Mountains Quadrangle, northwest Alaska. US Geological Survey, 1991. http://dx.doi.org/10.3133/mf2151.

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Geochemistry, geochronology, mineralogy, and geology suggest sources of and controls on mineral systems in the southern Toquima Range, Nye County, Nevada; with geochemistry maps of gold, silver, mercury, arsenic, antimony, zinc, copper, lead, molybdenum, bismuth, iron, titanium, vanadium, cobalt, beryllium, boron, fluorine, and sulfur; and with a section on lead associations, mineralogy and paragenesis, and isotopes. US Geological Survey, 2003. http://dx.doi.org/10.3133/mf2327c.

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