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Linear ore-bearing weathering zones and paleoplacers of the Kokshetau Massif, North Kazakhstan

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Abstract

Areal weathering mantles and linear zones are widespread in the Kokshetau Massif composed of Precambrian crystalline rocks and granitoids. The recently revealed linear weathering zones within linear stockworks with rare-metal or gold mineralization are of the greatest interest. In some cases, such zones are inherited by a hydrographic pattern and display the vertical zoning from the top downward: placer-linear ore-bearing weathering zones often with quartz veins-deep-seated linear stockwork with stringer-disseminated mineralization. Paleoplacers with abundant conglomerates and occasionally with high gold content are established in deep fault zones. In some cases, the linear ore-bearing weathering zones pass into lacustrine sediments of so far uncertain ore resource potential.

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References

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Authors and Affiliations

  1. Institute of the Earth’s Crust, Siberian Branch, Russian Academy of Sciences, ul. Lermontova 128, Irkutsk, 664033, Russia

    F. A. Letnikov

  2. Institute of Geology and Mineralogy, Siberian Branch, Russian Academy of Sciences, prosp. Akademika Koptyuga 3, Novosibirsk, 630090, Russia

    E. F. Letnikova

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  1. F. A. Letnikov
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  2. E. F. Letnikova
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Original Russian Text © F.A. Letnikov, E.F. Letnikova, 2011, published in Geologiya Rudnykh Mestorozhdenii, 2011, Vol. 53, No. 6, pp. 506–515.

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Letnikov, F.A., Letnikova, E.F. Linear ore-bearing weathering zones and paleoplacers of the Kokshetau Massif, North Kazakhstan. Geol. Ore Deposits 53, 447–454 (2011). https://doi.org/10.1134/S1075701511060079

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  • DOI: https://doi.org/10.1134/S1075701511060079

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