Author(s)

Alexander Vasilyevich Tatarinov, Lyubov Ilyinichna Yalovik, Anatoly Georgievich Mironov, Victor Fedorovich Posokhov

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.

Polycomponent Ores, Dynamometamorphism, Mechanometasomatites, Noble Metals, Microaggregates, Nanophases, Trace Minerals, Ore-Forming System, Carbonyl Compounds, Geochemical Microanomalies

Tatarinov, A. , Yalovik, L. , Mironov, A. and Posokhov, V. (2020) Mykert-Sanzheevka Field of Polycomponent Ores (Pb, Zn, Ag, Au, PGE): Geologic-Substance Characteristics and Formation Features of Ore-Forming System. Geomaterials, 10, 1-23. doi: 10.4236/gm.2020.101001.