This article lists a number of geological data on the conditions of formation of some major gold deposits in the conglomerates of the Earth's crust. We analyze the metallogenic, tectonic, stratigraphic and other factors controlling the formation of gold-bearing conglomerates in certain fields, such as the Witwatersrand (S. Africa) and Darwaz (Tajikistan). The following tectonic factors play the...

Typomorphic features of placer gold conglomerates the Ortokinskaya formation Early Permian age (P1or) Sololiy Uplift Olenek High and modern channel alluvium Ortoku Eekit river, which drains these deposits, are studied. It is found that extremely heterogeneous composition complex inner structure typical vast majority conglomerates. There several stages different fineness (from 251‰ to 999‰) with...

Based on the identified typomorphic features of placer gold, a set determined morphogenetic criteria is proposed to identify genesis gold content and different sources in platform areas, which allow more correctly selecting search methods improving efficiency forecasting ore deposits. Gold particles larger than 0.25 mm with signs wind-worn processing indicate formation autochthonous aeolian pla...

The study of the internal structures placer gold on territory east Siberian platform, overlain by a thick cover Mz-Kz deposits, where traditional methods searching for deposits are not effective, allowed us to determine, first time, stages ore formation and conditions its occurrence. identified indicators (structures primary recrystallization, secondary high-grade shells) indicate that content ...

Ulug-Sair Au-Bi-Te-Se mineralization is one prospect for native Au in the Western Tuva, and its origin remains debated. Mineralization consists of gold–sulfide–quartz veins host sedimentary rocks (conglomerates, siltstones, shales), quartz–tourmaline, quartz–carbonate–sericite–altered rocks. To determine origin, we examined mineralogical–geochemical features, formation conditions, fluid sources...