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Thursday, May 7, 2020 | History

1 edition of Genesis of uranium- and gold-bearing Precambrian quartz-pebble conglomerates found in the catalog.

Genesis of uranium- and gold-bearing Precambrian quartz-pebble conglomerates

Genesis of uranium- and gold-bearing Precambrian quartz-pebble conglomerates

proceedings of a workshop, Oct. 13-15, 1975, Golden, Colorado

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  • 28 Currently reading

Published by U.S. Govt. Print. Off., for sale by the Supt. of Docs., GPO in Washington .
Written in English

    Subjects:
  • Uranium ores -- Congresses.,
  • Gold ores -- Congresses.,
  • Geology, Stratigraphic -- Precambrian -- Congresses.,
  • Conglomerate -- Congresses.

  • Edition Notes

    Includes bibliographies.

    Statementedited by Frank C. Armstrong.
    SeriesGeological Survey professional paper ; 1161 A-BB, Geological Survey professional paper ;, 1161 A-BB.
    ContributionsArmstrong, Frank C.
    Classifications
    LC ClassificationsQE390.2.U7 G46
    The Physical Object
    Paginationca 450 p. in various pagings :
    Number of Pages450
    ID Numbers
    Open LibraryOL4239747M
    LC Control Number80607118

    The Depositional Model of Uranium-Bearing Quartz-Pebble Conglomerate of Precambrian Age and Application to Exploration. F. Allan Hills. Abstract. Ancient quartz-pebble conglomerates have been the source of most of the gold ever mined and are a major source of uranium and a potential major source of thorium. DOI: /pp Corpus ID: Sedimentary processes and distribution of particulate gold in the northern Bering Sea @inproceedings{NelsonSedimentaryPA, title={Sedimentary processes and distribution of particulate gold in the northern Bering Sea}, author={C. Hans Nelson and David Moody Hopkins}, year={} }.

    A series of uranium-, thorium-, and gold-bearing conglomerates in Late Archean and Early Proterozoic metasedimentary rocks have been discovered in southern Wyoming. The mineral deposits were found by applying the time and strata bound model for the origin of uranium-bearing quartz-pebble conglomerates to favorable rock types within a geologic terrane . Book - GSC OPEN FILE P Publication Number: OF Date: Author: Rose, D.G. Book - URANIUM DEPOSITS OF CANADA. Publication Number: CIM Vol 33 Date: Author: Evans, E.L. Reference Location: Sault Ste. Marie RGP. Book - GENISIS OF URANIUM AND GOLD-BEARING PRECAMBRIAN QUARTZ- PEBBLE CONGLOMERATES.

    GJBX / Cohenour, R. E. and Kopp, R. S. / REGIONAL INVESTIGATION FOR OCCURRENCES OF RADIOACTIVE QUARTZ-PEBBLE CONGLOMERATES IN THE PRECAMBRIAN OF SOUTHWESTERN MONTANA, FINAL REPORT, Grand Junction, pages, 15 plates (in pocket), 97 figs., 49 tables, - 2 -, $ GJM Reports.   Ores in Conglomerates.- Nickel-Cobalt Sulfides in Precambrian Gold and Uranium-Bearing Quartz-Pebble Conglomerates of South Africa.- Different Populations of Gold Particles as Outlined by Their Silver Content: A Regional Investigation in the Precambrian Kimberley Reef Placer of the East Rand Goldfield/Witwatersrand/South Africa/5(1).


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Genesis of uranium- and gold-bearing Precambrian quartz-pebble conglomerates Download PDF EPUB FB2

Genesis of uranium- and gold-bearing Precambrian quartz-pebble conglomerates: Proceedings of a workshop, October, Golden, Colorado on *FREE* shipping on qualifying : Unknown Binding, Import, Get this from a library.

Genesis of uranium- and gold-bearing Precambrian quartz-pebble conglomerates: proceedings of a workshop, Oct.Golden, Colorado. [Frank C Armstrong; Geological Survey (U.S.),;]. Armstrong F. GENESIS OF URANIUM- AND GOLD-BEARING PRECAMBRIAN QUARTZ-PEBBLE CONGLOMERATES USGS Prof. Paper # wps faded else light wear, vg with approx.

pp., scores of figs. Reports in the volume are individually paginated. Price: $ (stock#PPmc). Quartz-pebble-conglomerate gold deposits represent the largest repository of gold on Earth, largely due to the depos-its of the Witwatersrand Basin, which account for nearly 40 percent of the total gold produced throughout Earth’s history.

This deposit type has had a controversial history in regards to genetic : Ryan D. Taylor, Eric D. Anderson. The genesis of Au-U-quartz-pebble conglomerates: some thoughts on the existenceof a non-oxidizing early Precambrian atmosphere.

La genèse des conglomérats à galets de quartz et Au-U: quelques réflexions à propos de l'existence d'une Author: Rudolf Saager. In Genesis of Uranium-and Goldbearing Precambrian Quartz-Pebble Conglomerates (ed. Armstrong, F. C.), USGS Prof. Pap. E,pp.

E1–E6. Quartz-pebble conglomerate of the Singhbhum Craton. In the present study inhomogeneous, partly uraniferous leucoxene/rutile aggregates and brannerite grains from the Elliot Lake area, Canada, and the Pongola basin, South Africa, were identified by ore microscopy.

This observation accords with the fact that U−Ti phases are second only to uraninite as the most important uranium minerals in Precambrian by: 8. Precambrian metalliferous conglomerates are the most important source of gold, uranium, and other metals.

They concentrate no less than 30% of. Uranium ore deposits occur in nearly every major rock type in the earth’s crust, and nearly all igneous, metamorphic, and sedimentary processes are c Book Chapter Geology and Concepts of Genesis of Important Types of Uranium Deposits Author(s) J. Nash J. Nash U.

Geological Survey, Denver, Colorado It is important to note that gold bearing, quartz pebble conglomerates can be an important source of uranium. In fact, they were the primary source of uranium. IAEA uranium deposits classification 1) Unconformity-related 23 2) Sandstones 3) Quartz-pebble conglomerates 22 4) Veins 5) Breccia complexes 1 6) Intrusive 13 7) Phosphorites 10 8) Collapse breccia pipes 10 9) Volcanic 43 10) Surficial 16 11) Metasomatites 12 12) Metamorphic 10 13) Lignite-coal 22 14) Black shales 9.

Schidlovski, “Uraniferous Constituents of the Witwatersrand Conglomerates: Ore-Microscopic Observations and Implications for the Witwatersrand Metallogeny,” in Genesis of Uranium and Gold-Bearing Precambrian Quartz-Pebble Conglomerates (US Geol.

Surv. Prof. Paper, ), pp. N1–N Google ScholarCited by: Chemical Geology, 83 () 47 Elsevier Science Publishers B.V., Amsterdam -- Printed in The Netherlands Age dating of individual grains of uraninite in rocks from electron microprobe analyses John F.W.

Bowles Mineral Science Ltd., Chesham, Buckinghamshire, HP5 2PZ (Great Britain) (Accepted for publication Janu ) ABSTRACT Bowles, J.F.W., Cited by: In: The Genesis of Uranium- and Gold-Bearing Precambrian Quartz-Pebble Conglomerates.

GSA Spec. Publ., Golden, Colo., in press. Recommended articles Citing articles (0)Cited by: PRECAMBRIAN AURIFEROUS QUARTZ-PEBBLE CONGLOMERATES IN BRAZIL WILSON SCARPELLI Anglo American Corporation do Brasil. Sao Paulo, Brasil ABSTRACT: Auriferous quartz-pebble conglomerates were identified at Jacobina, Moeda and Goiis Velho, in Brazil, where they occur in intimate association to greenstone belts, and uranium and Size: KB.

Uranium deposits older than about Ma are generally hosted within quartz-pebble conglomerates and are a source of economic uranium. The genesis of these deposits is controversial and genetic models include hydrothermal, detrital/placer, and modified by: 5.

/ GENESIS OF URANIUM- AND GOLD-BEARING PRECAMBRIAN QUARTZ-PEBBLE CONGLOMERATES: PROCEEDINGS OF A WORKSHOP, October, Golden, Colorado,pb, pages, figs., 38 tables, $ 38 PP B / Snavelly, P D., / MAKAH FORMATION - A DEEP-MARGINAL-BASIN SEQUENCE OF LATE EOCENE AND. uranium deposits in proterozoic quartz-pebble conglomerates - (report of the working group on uranium geology organized by the international atomic energy agency) [international atomic energy agency] on *free* shipping on qualifying offers.

uranium deposits in proterozoic quartz-pebble conglomerates - (report of the working group on uranium geology. In Genesis of Uranium- and Gold-bearing Precambrian Quartz-Pebble Conglomerates (U.S.

Geological Survey Professional PaperArmstrong, F. (Ed.), pp. S1 – S12). Washington: United States Government Printing by: 7. Robertson, James A. The Blind River uranium deposits: the ores and their setting, The genesis of uranium- and gold-bearing precambrian quartz-pebble conglomerates, US Geological Professional Paper A-BB.

Precambrian quartz-pebble conglomerate-type uranium deposits occur only in rocks older than two billion years old. The conglomerates also contain pyrite. These deposits have been mined in the Blind River-Elliot Lake district of Ontario, Canada, and from the gold-bearing Witwatersrand conglomerates of South Africa.Pyrite-bearing quartz-pebble conglomerate and quartz arenite 2 Submarine gold-rich massive sulphide Boliden (Sweden) Mt.

Lyell & Mt. Morgan (Australia), Horne, Bousquet, Agnico-Eagle (QC), Eskay Creek (BC) Mixed volcanic, volcaniclastic and sedimentary sequences in greenstone belts Banded and stratiform massive sulphide lenses and adjacent File Size: KB.Gold-bearing Sedimentary Rocks in Northwest, Wyoming­ A Preliminary Report By J.

C. Antweiler and J. D. Love ABSTRACT Thick sequences of gold-bearing quartzite conglomerate occur in latest Cretaceous and Tertiary formations and in Quaternary gravels derived from them in northwest Wyoming. Analyses ofCited by: 9.