Mykert-Sanzheevka Field of Polycomponent Ores (Pb, Zn, Ag, Au, PGE): Geologic-Substance Characteristics and Formation Features of Ore-Forming System — Oak Academic Publishing
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Mykert-Sanzheevka Field of Polycomponent Ores (Pb, Zn, Ag, Au, PGE): Geologic-Substance Characteristics and Formation Features of Ore-Forming System
Geological Institute, Siberian Branch, Russian Academy of Sciences, Ulan-Ude, Russia
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Geological Institute, Siberian Branch, Russian Academy of Sciences, Ulan-Ude, Russia
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Geological Institute, Siberian Branch, Russian Academy of Sciences, Ulan-Ude, Russia
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Geological Institute, Siberian Branch, Russian Academy of Sciences, Ulan-Ude, Russia
1 Geological Institute, Siberian Branch, Russian Academy of Sciences, Ulan-Ude, Russia
2 Geological Institute, Siberian Branch, Russian Academy of Sciences, Ulan-Ude, Russia
3 Geological Institute, Siberian Branch, Russian Academy of Sciences, Ulan-Ude, Russia
4 Geological Institute, Siberian Branch, Russian Academy of Sciences, Ulan-Ude, Russia
The new results of geologic-structural, petrographic and mineralogic-geochemical researches of Mykert-Sanzheevka ore field—the Uda-Vitim mineragenic zone South-West ending of West Transbaikalia are given. Its main ore-controlling structure, represented by losange, consisting of rhombohedral and tetrahedral blocks-duplexes mosaic clusters, which are separated by narrow tectonic sutures, is specified. It is clarified that polycomponent ores clusters are confined with these small-block sutures, made by subvolcanic dykes of shoshonite-latite volcano-plutonic association (233 - 188 million years), apodyke dynamometamorphites (breccias, cataclasite, mylonites) and also mechanometasomatites. Four stages of the dynamometamorphites formation characterized by different species compositions of ore minerals appeared as a result of mechanochemical reactions are determined. A carbonyl model of mineral microaggregates formation with films containing noble metal nanoparticles is proposed. Ore-forming system features of Mykert-Sanzheevka field are considered.
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