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Primary distribution of silver and copper in native gold …

Abstract Electron-microprobe analyses and mineragraphic studies of native gold demonstrate considerable variations in the primary intergrain and intragrain distribution of silver. The gold grains have from 1–55 weight percent silver; copper is present in grains from ...

(PDF) Distribution of copper and gold in ophiolites from …

 · The distribution of gold in the lithosphere bears critically on models for gold ore deposits.

(PDF) DISTRIBUTION OF COPPER AND GOLD IN …

CanadianMfueralogist Vof. 19,pp.225-232 (1981) DISTRIBUTION OF COPPER AND GOLD IN OPHIOLITES FROM NEW CALEDONIA C. DUPUY Centre glologique et glophysique, Universitd des sciences et & Hutchinson 1976; Ferrario & Caruti 1979, Such a distribution suggeststhat both elements are Papino 1979, Tischler 1979).

Gold distribution at the E26 porphyry copper-gold …

Gold distribution at the E26 porphyry copper-gold deposit, Goonumbla N.S.W. - CORE Reader

Distribution of copper, silver and gold during thermal …

The results obtained indicate that up to about 50% of copper and silver can evolve from sample residues in the form of volatile CuBr and AgBr above 600 and 1000°C, respectively. The reactions occur in the molten resin phase simultaneously with the decomposition of the brominated resin.

Gold in porphyry copper deposits: its abundance and fate

 · Porphyry copper deposits are among the largest reservoirs of gold in the upper crust and are important potential sources for gold in lower temperature epithermal deposits. Whether gold remains in porphyry copper deposits is important both to their economic attractiveness and to the distribution of gold in the upper crust.

Tectonic controls on the distribution of large copper and gold …

Tectonic controls on the distribution of large copper and gold deposits in Southeast Asia to identify productive and non-productive structures Bert De Waele, Peter Williams, Gavin Chan SRK Consulting, 10, Richardson Street, West Perth, WA6005, Western

Gold Distribution in Porphyry Copper Deposits of Kerman …

The distribution of gold in the porphyry copper deposits of Iran, and the factors controlling the gold contents, are poorly understood. To this aim, we selected eight porphyry copper deposits from the Kerman region, which is known as the most important [14,15]. ...

Figure 2 from Gold Distribution in Porphyry Copper …

- "Gold Distribution in Porphyry Copper Deposits of Kerman Region, Southeastern Iran" Figure 2. Geochemical and tectonic classification of the Cuhosting porphyries from Kerman region: (a) A/NK vs.

(PDF) The Geology and Distribution of Copper-Gold in …

The Geology and Distribution of Copper-Gold in Panama Panama has a rich endowment of gold and copper deposits which formed as a result of subduction-related arc magmatism related to th e Pacific ...

(PDF) Distribution of copper and gold in ophiolites …

DISTRIBUTION OF COPPER AND GOLD IN OPHIOLITES FROM NEW CALEDONIA C. DUPUY Centre glologique et glophysique, Universitd des sciences et techniques du Languedoc, 34060 Montpellier Cedex, France J ...

Distribution of gold in porphyry copper deposits | …

Semantic Scholar extracted view of "Distribution of gold in porphyry copper deposits" by D. Cox et al. DOI: 10.3133/OFR8846 Corpus ID: 126941395 Distribution of gold in porphyry copper deposits @inproceedings{Cox1988DistributionOG, title={Distribution of gold

Gold distribution at the E26 porphyry copper-gold …

The E26 porphyry copper-gold deposit is the largest of several copper-gold deposits discovered to date in the Goonumbla region of central west N.S.W. Cu and Au mineralisation occurs in areas of strong pervasive potassic alteration and quartz veining, associated with ...

Distribution of gold, copper, and some other metals in …

The item Distribution of gold, copper, and some other metals in the McCarthy B-4 and B-5 quadrangles, Alaska, by E.M. MacKevett, Jr., and James G. Smith represents a specific, individual, material embodiment of a distinct intellectual or artistic creation found in Bowdoin College Library.

Copper Just Hit a Near-Decade High. Here Are 3 Reasons …

 · Copper has soared of late, but that could be an indication of more gains—not weakness—ahead. The price of the copper continuous contract (HG00) has risen almost 40%, to $4.14 per pound, since ...

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Figure 5 – View looking west showing distribution of: A) gold, B) silver, and C) copper in the top 215 metre extent of Bx 1. Values plotted are gram-metre for gold and silver, and pound-metre for copper. Elevation ranges shown in Figure 4 indicated by dashed

Distribution of copper, silver and gold during thermal …

Distribution of copper, silver and gold during thermal treatment with brominated flame retardants Sylwia Oleszek, Mariusz Grzegorz Grabda, Etsuro Shibata, Takashi Nakamura Research output : Contribution to journal › Article › peer-review

Iron Oxide Copper-Gold Deposits: Geology, Space-Time …

"Iron Oxide Copper-Gold Deposits: Geology, Space-Time Distribution, and Possible Modes of Origin", One Hundredth Anniversary Volume, Jeffrey W. Hedenquist, John F. H. Thompson, Richard J. Goldfarb, Jeremy P. Richards Download citation file: Ris (Zotero)

(PDF) The Geology and Distribution of Copper-Gold in …

This talk describes the distribution of copper and gold deposits in Panama in the context of their availability for pre-Columbian mining and the distribution of archaeological artifacts.

Gold-Distribution of Gold in Porphyry Copper Deposits

content of porphyry copper-gold deposits is related to the fact that in many systems molybdenum is distributed as a peripheral zone outside the copper-gold orebody that itself

(PDF) Distribution of gold in porphyry copper deposits

Distribution of gold in porphyry copper deposits January 1992 In book: Contributions to commodity research (pp.C1-C14) Edition: Bulletin 1877 Publisher: U.S. Geological Survey Editors: DeYoung ...

Copper and gold distribution at the Aitik Deposit, Gällivare …

(2003). Copper and gold distribution at the Aitik Deposit, Gällivare Area, Northern Sweden. Applied Earth Science: Vol. 112, No. 3, pp. 260-267.

Copper and gold distribution at the Aitik Deposit, …

(2003). Copper and gold distribution at the Aitik Deposit, Gällivare Area, Northern Sweden. Applied Earth Science: Vol. 112, No. 3, pp. 260-267.

Distribution of silver and copper in placer gold derived …

Distribution of silver and copper in placer gold derived from the northeastern part of the colorado mineral belt

-MCMORAN COPPER & GOLD INC. CASH DISTRIBUTION

FREEPORT-MCMORAN COPPER & GOLD INC. CASH DISTRIBUTION Ex - Distribution Date: 06/12/2013 DESCRIPTION: Freeport -McMoRan Copper & Gold Inc. (FCX) has announced a supplemental Dividend of $1.00 per FCX CommonThe record 201312, 2013 ...

Copper

Kansanshi Copper Mine - Gold By Product Distribution. – Characterisation of distribution of gold with copper minerals. – Definition of balance between gold recovery to copper concentrate and recoverable free gold for dedicated gold circuit. Cadia - Gold By Product Distribution.