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Friday, July 31, 2020 | History

2 edition of sources of Witwatersrand gold and uranium found in the catalog.

sources of Witwatersrand gold and uranium

Desmond A. Pretorius

sources of Witwatersrand gold and uranium

a continued difference of opinion

by Desmond A. Pretorius

  • 247 Want to read
  • 7 Currently reading

Published by University of the Witwatersrand in Johannesburg .
Written in English

    Places:
  • South Africa,
  • Witwatersrand.
    • Subjects:
    • Gold ores -- South Africa -- Witwatersrand.,
    • Uranium ores -- South Africa -- Witwatersrand.,
    • Geology -- South Africa -- Witwatersrand.

    • Edition Notes

      Includes bibliographical references (leaves 36-43).

      Statementby D.A. Pretorius.
      SeriesInformation circular / Economic Geology Research Unit ;, no. 206, Information circular (University of the Witwatersrand. Economic Geology Research Unit) ;, no. 206.
      Classifications
      LC ClassificationsQE325 .J6 no. 206, TN427.S62W57 .J6 no. 206
      The Physical Object
      Pagination43 leaves :
      Number of Pages43
      ID Numbers
      Open LibraryOL1808127M
      LC Control Number89216338

      () with limits of Witwatersrand strata (Pretorius, ). The gold in this basin occurs in the coarse grained conglomerates forming the upper portions of the “Witwatersrand Supergroup” that hosts roughly 7 m of sedimentation. It is found here in association . The Witwatersrand Basin has the world‟s richest deposits of gold and low-grade uranium, with South Africa being the world‟s leading producer of gold (Weiersbye et al., ; Kumah, ). Mining started in the Witwatersrand in , after an Australian prospector discovered gold, on what used to be a farm in the area (Sutton et al., ).

      Notes & references General sources. OECD NEA & IAEA, Uranium Resources, Production and Demand ('Red Book') P. Bruneton, M. Cuney, F. Dahlkamp, G. Zaluski, IAEA geological classification of uranium deposits, International Symposium on Uranium Raw Material for the Nuclear Fuel Cycle (URAM ), June World Distribution of Uranium Deposits (UDEPO) with Uranium Deposit . Since , U-producing gold mines in South Africa exported a total of some t of U more than double that amount (ca. t) is estimated to still be contained in gold mining tailings covering some km² in the Witwatersrand basin. These slimes dams and associated infrastructure such as return water dams, pipelines,File Size: KB.

      Gold/Auriferous Deposits can be classified into types for which here is a List of 10 Types of Gold Deposits: Auriferous porphyry dykes, sills, and stocks; Auriferous pegmatites; coarse-grained granitic deposits + albitite. Carbonatites and carbonatite-related . The book presents the results from the Uranium Mining and Hydrogeology Conference (UMH VI) held in September , in Freiberg, Germany. The following subjects are emphasised: Uranium Mining, Phosphate Mining and Uranium recovery. Cleaning up technologies for .


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Sources of Witwatersrand gold and uranium by Desmond A. Pretorius Download PDF EPUB FB2

The Witwatersrand basin hosts the most productive gold fields yet mined anywhere in the world. From to the end ofa total of 41, metric tons ( billion oz) of gold andmetric tons of uranium oxide was recovered from mineralized quartz-pebble conglomerates, quartzites, and thin layers of kerogen deposited between and Ma on braid deltas and braid plains.

The Witwatersrand Basin is a largely underground geological formation which surfaces in the Witwatersrand, South holds the world's largest known gold reserves and has produced over billion ounces (o metric tons), which represents about 50% of all the gold ever mined on earth. The basin straddles the old provinces of Transvaal and the Orange Free State, and consists of a Country: South Africa.

New research by Depiné et al. published in Mineralium Deposita provides critical evidence to the origin of gold and uranium in the Archean Witwatersrand Supergroup in South Witwaterstrand Basin in South Africa accounts for 40% of the world’s gold and is a critical source of uranium for the the planet (Frimmell, ).).

There are two competing models for the origin of the. In South Africa, Witwatersrand-type gold, pyrite, and uranium mineralization is sporadically represented over a considerable period of time from local occurrences in the Archean greenstone basement, through the Dominion Reef, Witwatersrand Supergroup, and Black Reef Formation of the Transvaal Sequence.

The problem of the origin of the Witwatersrand gold-uranium deposit is considered. The fluvial and explosion hydrothermal origin of pyrite spheroids and Au-bearing pseudoconglomerate is denied. Evidence for the primary character of spheroids and the autochthonous crystallization of pyrite under endogenic conditions is furnished.

The association of gold with carbonaceous rocks is Cited by: 4. Explorer and prospector Jan Gerrit Bantjes () was the first and original discoverer of a Witwatersrand gold reef in June having prospected the area since the early s, as well as co-operating the Kromdraai Gold Mine in to the NW of present-day Johannesburg together with his partner Johannes Stephanus Minnaar in an area Location: Witwatersrand Basin, Johannesburg, South Africa.

This workshop was held to examine the origins of uranium bearing placer deposits of South Africa, Canada and the United States in order that future prospectors who are seeking new sources for uranium fuels could profit by knowledge of the geological events believed to have led to known deposits.

The book put forth an fairly interesting history of the use of Uranium. Discussion of the science behind using Uranium for weapons or energy was clear and mostly concise.

The Author spent too much time in my view talking about his particular adventures to various parts of the world investigating the history of Uranium and its impact on the world/5.

Here is some history of the Witwatersrand Gold Style Ore Deposits as they related to South Africa since the arrival of the Dutch and the southernmost tip of the continent in The Dutch set up a small fort where Cape Town stands today and started Market Gardens as a place that the Dutch East India Company ships to shelter and to restock with freshwater and provisions on the long journey.

Winde F., de Villiers A.B. () The nature and extent of uranium contamination from tailings dams in the Witwatersrand gold mining area (South Africa). In: Merkel B.J., Planer-Friedrich B., Wolkersdorfer C.

(eds) Uranium in the Aquatic by: 7. The concentration, by wet high-intensity magnetic separation (WHIMS), of gold and uranium in materials resulting from the cyanidation of Witwatersrand ores was tested on an industrial scale on two South African gold mines, and the results are discussed in detail.

The gold- and uranium-bearing deposits of the Witwatersrand basin took some Ma to form during the Archaean Period, between and Ma ago (Robb and Robb, ). In addition to aeons of natural weathering, a hundred and twenty years of mining and mine residue deposition has resulted in.

Uranium pollution of South African streams – An overview of the situation in gold mining areas of the Witwatersrand F. Winde1,2 & L. Sandham1,3 1School of Environmental Sciences and. • The Witwatersrand has been mined for more than a century. • It is the world’s largest gold and uranium mining basin with the extraction, from more than mines, • of 43 tons of gold in one century and 73 tons of uranium between and File Size: 9MB.

The total uranium production of the Witwatersrand basin between and is estimated to be abouttons of refined uranium. Untilmost of the uranium was exported to the U.S. and to Britain. The problem of the origin of the Witwatersrand uranium-gold deposit Article (PDF Available) in Moscow University Geology Bulletin 67(3) May with Reads How we measure 'reads'.

More information: Sebastian H.J. Fuchs et al, Gold and uranium concentration by interaction of immiscible fluids (hydrothermal and hydrocarbon) in the Carbon Leader Reef, Witwatersrand Supergroup. significant source for detrital gold in the Witwatersrand sediments.

Keywords. Uraninite, trace elements, gold, Witwatersrand grains that are typically enclosed, or partially replaced, 1 Introduction Hardly any other gold province has been studied and debated so thoroughly as.

Wetlands for pollution control around the Witwatersrand gold/uranium mines 63 Impact on groundwater from radionuclide emission % % % % % % Extract 1 - weakly bound Extract 2 - ex carbonates Extract 3 - ex FeOOH, MnOx Extract 4.

radionuclides in water sources, this paper outlines mechanisms, associated with gold mines, which explain the presence of such radionuclides. A Curie of Rock Consider a block of rock, m long, m wide and 1 m thick.

This slice of rock has a mass of about 27 tons. At a uranium grade of g/t of U3O8, this mass of rock. In just over years of mining, about 45 tons of gold (more than 35% of all the gold mined in the history of mankind; Handley, ) and over tons of uranium have been produced from the Witwatersrand by: The Witwatersrand Supergroup contains more uranium than gold and the Witwatersrand gold mines are in fact also uranium mines.

Uranium was originally mined as a by-product of the gold mining industry in Gauteng and the West Rand (Von Backström, ). South Africa also had one of the first uranium extraction plants in the world, which provided Cited by: Abstract— Historically, there have been a range of diameter estimates for the large, deeply eroded Vredefort impact structure within the Witwatersrand Basin, South Africa.

Here, we estimate the diameter Cited by: