Internal Structures of Placer Gold as an Indicator of Endogenous and Exogenous Processes

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 is formed mainly due supply repeated redeposition native from ancient gold-bearing Precambrian stage younger ones. discovered coarse-, medium-grained, mono-grained, unclear-zonal, granulation disintegration suggest nearby sources Mesozoic formation. In weathering crust, shell formed. hydrodynamic environment, practically do change fully correspond endogenous gold. aeolian conditions, transformed. conglomerates, under impact lithostatic pressure, as well in metamorphogenic when PT change, structure changes. Thus, huge factual material, it proved contain extensive information both about origin (the formation—Precambrian Mesozoic) transformation various exogenous conditions. indicator certain types contribute more correct selection closed territories assessing their prospects. use this method makes possible develop criteria forecasting different based structures.