Gorevsky polymetallic deposit (Siberia, Russia): mineral composition of ores and features of ore deposition

Abstract

The paper shows the genetic diversity of the structure and mineral composition of the ores of the Gorevsky Pb-Zn deposit, reveals the main signs of synchronous deposition of ore matter from near-bottom ore-bearing solutions associated with sedimentation processes in the sedimentary basin, considers textural and structural features and mineral associations of ores accompanying various metamorphism processes and postmagmatic processes. A model of the initially primary sedimentary-diagenetic origin of the ores of the Gorevsky Pb-Zn deposit under the conditions of catagenesis and the important role of the processes of redistribution and redeposition of the ore substance by interstitial solutions of the primary ore material is detailed. The study is based on the method of detailed study of the textural and structural features of ores in polished and polished samples. microstructural and mineral features and composition of ore and non-metallic minerals using modern methods of studying the substance. The bulk of the ores of the Gorevsky deposit demonstrate the textural and structural features of synsedimentary deposits, which are simultaneous with the host carbonaceous-micaceous-siliceous-carbonate rocks and retain these main structural features both at the macro and micro levels. The results obtained are compared and analyzed in comparison with other polymetallic deposits in Russia and in other regions of the world