Nanomineralogy and nanogeochemistry of ores from gold deposits of Uzbekistan

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• 作者：R. I. Koneev (1)
  R. A. Khalmatov (1)
  Yu. S. Mun (1)
  
• 刊名：Geology of Ore Deposits
• 出版年：2010
• 出版时间：December 2010
• 年：2010
• 卷：52
• 期：8
• 页码：755-766
• 全文大小：887KB
• 参考文献：1. Hochella, M.F., Nanogeoscience: from Origins to Cutting-Edge Applications, / Elements, 2008, vol. 4, pp. 373-79. CrossRef
  2. Hochella, M.F., There’s Plenty of Rooms at the Bottom: Nanoscience in Geochemistry, / Geochim. Cosmochim. Acta, 2002, vol. 66, pp. 735-43. CrossRef
  3. Koneev, R.I., / Nanomineralogiya zolota epitermal’nykh mestorozhdenii Chatkalo-Kuraminskogo regiona (Nanomineralogy of Gold at Epithermal Deposits of the Chatkal-Kurama Region), St. Petersburg: Del’ta, 2006.
  4. Koneev, R.I., Natural Nanotechnologies in the Mineral-Geochemical Systems, / Abstracts of the 32nd IGC, Part 1, Florence, 2004.
  5. Koneev, R.I., Kushmuradov, A.K., and Turesebekov, A.Kh., / Mikromineralogiya -predmet, metody, primenenie (Micromineralogy: Subject, Methods, and Application), Tashkent: Universitet, 1994.
  6. Kotov, N.V., Poritskaya, L.G., and Gembitsky, V.V., / Samorodnoe zoloto mestorozhdenii Zapadnogo Uzbekistana (Native Gold at Deposits of Western Uzbekistan), St. Petersburg: Nevskii kur’er, 1995.
  7. Kremenetsky, A.A. and Mintser, E.F., Universality of Gold Ore Systems—A Key Criterion of Regional Forecast of Economic Mineralization, / Otech. Geol., 1995, no. 1, pp. 19-7.
  8. / Mineralogicheskaya interventsiya v mikro- i nanomir. Materialy Mezhdunarod. seminara (Proceedings of International Seminar: Mineralogical Intervention into Micro- and Nanoworld), Syktyvkar: Inst. Geol. Komi Sci. Center, 2009.
  9. Moiseenko, V.G., Problems of Nanogeochemistry of Gold, in / Nanogeokhimiya zolota (Nanogeochemistry of Gold), Vladivostok: Dal’nauka, 2008, pp. 6-0.
  10. / Nanogeokhimiya zolota. Trudy simpoziuma (Proceedings of Symposium on Nanogeochemistry of Gold), Vladivostok: Dal’nauka, 2008.
  11. / Nanomineralogiya. Ul’tra- i mikrodispersnoe sostoyanie mineral’nogo veshchestva (Nanomineralogy. Ultra- and Micro-dispersion State of Mineral Substance), St. Petersburg: Nauka, 2005.
  12. / Nanotekhnologii v blizhaishem desyatiletii. Prognoz napravleniya poiskov (red. M.K. Roko i dr.) (Vision for Nanotechnology: Research and Development in the Next Decade), Roco, M.C. and Alivisatos W.P., Eds., WTEC, Loyola College in Maryland, 1999; Moscow: Mir, 2002).
  13. Novgorodova, M.I., Native crystals of Native Gold and Their Intergrowths, in / Novye dannye o mineralakh (New Data on Minerals), Moscow: Ekost, 2004, issue 39, pp. 83-3.
  14. Ovchinnikov, L.N., Ore Process, / Razved. Okhr. Nedr, 1996, no. 8, pp. 27-9.
  15. / Rudnye mestorozhdeniya Uzbekistana (Ore Deposits of Uzbekistan), Tashkent: Inst. Mineral Res., 2001.
  16. Rundqvist, D.V., Time Factor in the Formation of Hydrothermal Deposits: Periods, Epochs, Megastages, and Stages of Ore Formation, / Geol. Rudn. Mestorozhd, 1997, vol. 39, no. 1, pp. 11-4 ( / Geol. Ore Deposits (Engl. Transl.), 1997, vol. 39, no. 1, pp. 8-9]).
  17. / Spravochnik po geokhimii (Handbook on Geochemistry), Moscow: Nedra, 1990.
  18. Tomson, I.N., / Metallogeniya rudnykh raionov (Metallogeny of Ore Districts), Moscow: Nedra, 1988.
  19. Vasilevsky, B.B., Koneev, R.I., Rustamov, A.I., et al., New Data on Composition of Gold Ore at the Muruntau Deposit, / Rudy Met., 2004, no. 3, pp. 67-8.
  20. Yakubchuk, A.S., Shatov, V.V., Kirwin, D., et al., Gold and Base-Metal Metallogeny of the Central Asian Orogenic Supercollage, / Econ. Geol., 2005, vol. 100. pp. 1035-068.
  
• 作者单位：R. I. Koneev (1)
  R. A. Khalmatov (1)
  Yu. S. Mun (1)
  
  1. VUZ-gorodok, National University of Uzbekistan, Tashkent, 100174, Uzbekistan
  
• ISSN：1555-6476

文摘

Gold deposits of Uzbekistan are localized in the Kyzylkum, Nurata, and Kurama ore districts of the Kyzylkum-Kurama metallogenic belt. They comprise a consecutive series of deposit types corresponding to the series of geochemical associations: (Au-W)-Au-As)-Au-Te)-Au-Ag)-Au-Sb)-Au-Hg), which are arranged as a system of zones in orebodies, deposits, ore fields, and ore districts. The distribution of chemical elements characterized by average global concentrations in the crust within the ppm-ppb (10?-10? t) range was studied in ores of gold deposits using an ICP MS Elan DRC II device. Mineral nanoassemblages with a grain size of 10? to 10? m were examined with a Jeol YXA 8800R Superprobe. The Au-W, Au-As, and Au-Te associations with Bi tellurides and maldonite in ore dominate at hypo- and meso-abyssal gold deposits of the Kyzylkum district (Muruntau, Myutenbay). The contribution of the Au-Sb association with Pb, Ag, and Fe sulfoantimonites and aurostibite increases at the Daughyztau, Kokpatas, and Amantaitau gold deposits. The Au-As, Au-Te, and Au-Sb associations with Bi tellurides, maldonite, sulfoantimonites, and aurostibite dominate at the mesoabyssal gold deposits of the Nurata district (Charmitan, Guzhumsay). The Au-Te and Au-Ag associations with Au, Ag, Pb, Sb, Bi, and Hg tellurides and Bi selenides dominate at the hypabyssal gold deposits of the Kurama district (Kochbulak, Kayragach). The gold-silver deposits of the Kyzylkum district (Kosmanachi, Vysokovol’tnoe) and the Kurama district (Kyzylalmasay, Arabulak) are close in composition. They are characterized by development of intermetallides, sulfides, sulfosalts, and selenides of Au-Ag and occasionally Au-Sb associations. Fineness of gold decreases from early to late geochemical associations, whereas the size of gold grains increases in the same direction from nanogold to visible gold. The studies at the micro- and nanolevel make it possible to establish the attributes of specific gold mineralization, to substantiate prospecting guides, and to estimate the erosion level and resource potential of hidden ore objects. The greater and more diverse a set of micro- and nanominerals, the larger a gold deposit is.