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Economic Geology, 1970
Studies of fresh carbonate host rocks and unoxidized gold ores of the Carlin mine indicate that gold, quartz, barite, pyrite, and other sulfides were introduced into the Roberts Mountains Formation by acid hydrothermal solutions. Laboratory investigations on the carbonaceous materials in the host rocks and ores and studies of reactions between ...
Arthur S. Radtke, Bernard J. Scheiner
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Studies of fresh carbonate host rocks and unoxidized gold ores of the Carlin mine indicate that gold, quartz, barite, pyrite, and other sulfides were introduced into the Roberts Mountains Formation by acid hydrothermal solutions. Laboratory investigations on the carbonaceous materials in the host rocks and ores and studies of reactions between ...
Arthur S. Radtke, Bernard J. Scheiner
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Transactions of the IMF, 1996
A uniform, bright, high purity gold deposit can be obtained by using a dip gold plating process, characterized by high bath stability. The properties of the deposit have been examined by SEM, SRD and XPS.
Han Keping, Fang Jingli
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A uniform, bright, high purity gold deposit can be obtained by using a dip gold plating process, characterized by high bath stability. The properties of the deposit have been examined by SEM, SRD and XPS.
Han Keping, Fang Jingli
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Laser-induced deposition of gold
AIP Conference Proceedings, 1986AbstractThe laser-induced, vapor-phase deposition of gold metal from dimethyl-(2,4-pentanedionato) gold (III) and two fluorinated derivatives was examined by both photopyrolytic (LCVD) and photochemical modes of decomposition. High purity gold deposits are formed by LCVD with the rates of deposition being extremely vapor pressure dependent and thus ...
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Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, 1974
Summary It is shown that in the case of Au deposition from CN− solution slow surface area changes take place which can be observed by potentiostatic pulse and a.c. impedance methods. The mechanism of incorporation of CN into the Au deposit is briefly discussed.
I.R. Burrows, J.A. Harrison, J. Thompson
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Summary It is shown that in the case of Au deposition from CN− solution slow surface area changes take place which can be observed by potentiostatic pulse and a.c. impedance methods. The mechanism of incorporation of CN into the Au deposit is briefly discussed.
I.R. Burrows, J.A. Harrison, J. Thompson
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Herald of the Russian Academy of Sciences, 2012
The fast growth of global gold prices over the past two decades has boosted interest in the development of large-tonnage deposits with low metal contents. If this trend continues, zones of fine sulfidation may be considered potential and practically inexhaustible deposits of noble metals. The authors have distinguished and briefly characterized several
A. V. Volkov, A. A. Sidorov
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The fast growth of global gold prices over the past two decades has boosted interest in the development of large-tonnage deposits with low metal contents. If this trend continues, zones of fine sulfidation may be considered potential and practically inexhaustible deposits of noble metals. The authors have distinguished and briefly characterized several
A. V. Volkov, A. A. Sidorov
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1991
Lode gold deposits are one of the most characteristic features of Archaean greenstone belts within granitoid-greenstone terranes, with major deposits situated in most major cratonic areas (e.g. Australia, Brazil, Canada, India, South Africa, Zimbabwe: Foster, 1984; Macdonald, 1986; Ho and Groves, 1987).
D. I. Groves, R. P. Foster
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Lode gold deposits are one of the most characteristic features of Archaean greenstone belts within granitoid-greenstone terranes, with major deposits situated in most major cratonic areas (e.g. Australia, Brazil, Canada, India, South Africa, Zimbabwe: Foster, 1984; Macdonald, 1986; Ho and Groves, 1987).
D. I. Groves, R. P. Foster
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Optimization of Catalysts and Conditions in Gold(I) Catalysis—Counterion and Additive Effects
Chemical Reviews, 2021Zhichao Lu, Sagar R Mudshinge, Bo Xu
exaly
1991
In this chapter, ancient placers refer to deposits of Archaean and early Proterozoic age. Because each deposit may cover hundreds of square kilometres, they present economically attractive exploration targets. Individual ancient placer deposits like the Steyn/Basal placer in the Welkom goldfield of South Africa have produced in excess of 4500 t (metric
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In this chapter, ancient placers refer to deposits of Archaean and early Proterozoic age. Because each deposit may cover hundreds of square kilometres, they present economically attractive exploration targets. Individual ancient placer deposits like the Steyn/Basal placer in the Welkom goldfield of South Africa have produced in excess of 4500 t (metric
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Homogeneous and Heterogeneous Gold Catalysis for Materials Science
Chemical Reviews, 2021Kohei Sekine +2 more
exaly