The Witwatersrand deposit and the problem of the ore formation
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 interpreted in terms of the nuclear magnetic physicochemical phenomena. It is concluded that the Witwatersrand deposit is a hydrothermal metasomatic deposit.
Key wordsgold carbon ore formation large deposits Witwatersrand
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- 1.A. L. Buchachenko, “Magnetic Scenario of Chemical Reaction,” in Science and Humanity (Znanie, Moscow, 1990), pp. 193–201 [in Russian].Google Scholar
- 2.V. G. Gar’kovets, “Concept of Lithogenic Ore Formation,” Otech. Geol., No. 12, 3–8 (1992).Google Scholar
- 3.L. T. Nell, “The Problem of Uraninite Genesis in the South African Gold Conglomerates,” in Proceedings of the XXIst International Geologic Congress, Copenhagen, Denmark, 1960 (Copenhagen, 1960; Mir, Moscow, 1964), No. 3, pp. 258–274 [in Russian].Google Scholar
- 4.A. M. Portnov, “Abyssal Conglomerates: Gold, Uranium, and Diamond Deposits,” Priroda, No. 7, 27–33 (1980).Google Scholar
- 5.N. A. Shilo and M. S. Sakharova, “Origin of Pyrite Forms in the Witwatersrand Deposits,” Geol. Rudn. Mestorozhd. 28(2), 85–89 (1986).Google Scholar
- 6.N. A. Shilo, “Formation Mecanisms of Mineral Assemblages in Placers Forming in Periglacial and Arid Conditions,” Tikhookean. Geol. 14(3), 311 (1995).Google Scholar
- 7.N. A. Shilo, Placer Geology—Theory of Placer-Forming Ore Formations and Placers (Dal’nauka, Vladivostok, 2002) [in Russian].Google Scholar
- 8.E. L. Shkol’nik, E. A. Zhegallo, L. M. Girasimenko, and Yu. V. Shuvalova, Carbonaceous Rocks and Associated Gold in Witwatersrand, South Africa—Electronic Microscopy Analysis (Moscow, 2005) [in Russian].Google Scholar
- 9.A. D. Shcheglov, “On the Genesis of Gold Deposits in the Witwatersrand Region,” Dokl. Akad. Nauk 333(1), 79–82 (1993).Google Scholar
- 10.A. D. Shcheglov, On the Metallogeny of the Republic of South Africa, Genesis of Gold Deposits of Witwatersrand and the Probability of Discovering Their Analogs in Russia (Izd. Vses. Geol. Inst., St. Petersburg, 1994).Google Scholar
- 11.A. D. Shcheglov, “On Some Specific Features of Gold Deposits in Witwatersrand and Their Equivalents in the Eastern Regions of Russia,” Tikhookean. Geol., No. 2, 160–166 (1995).Google Scholar
- 12.D. K. Hallbauer and E. J. D. Kable, “Fluid Inclusion and Trace Element Content of Quartz and Pyrite Pebbles from Witwatersrand Conglomerates: Their Significance with Respect to the Genesis of Primary Deposits,” in Ore Genesis—The State of Art, Ed. by G. C. Anstutz, et al. (Berlin, Heidelberg, New York, 1982), pp. 742–752.Google Scholar