Mineralogical Criteria for the Prediction of Gold Mineralization in the Structures of the Siberian Craton

Generalization of the results study placer gold and mechanisms its distribution in east Siberian Platform made it possible for first time to reveal that ore sources gold-bearing placers were mainly mineralization gold-sulfide formation formed under influence hydrothermal metasomatic processes occurred deep fault zones. It is determined hydrothermal-metasomatic formations rock are amagmatic, near-surface, low-temperature spatially confined faults. These widespread terrigenous-carbonate strata sand deposits PZ-MZ age observed zones brecciation, silicification, ferruginization. The analysis Platform, based on previously conducted research predecessors our field observations, allowed us establish following. In northeast, occur development Zhigansky fault, Molodo-Popigai Anabar-Eekite system, central part Vilyui paleorift (Kempendyai dislocations), southeast Baikal-Patom thrust belt ancient faults (Bappagai, Khorinsky, etc.). Metasomatites origin form extended narrow along activated Mesozoic, as well conformable Vendian, Cambrian carbonate strata, Jurassic Cretaceous sandstones. proved these amagmatic not related magmatism basic composition, which confirmed by homogenous mineral composition metasomatites, independent magmatic bodies located with them. Zones metasomatites contain Au from 0.5 3.0 g/t, isolated cases up 24–32 g/t. Gold represented finely-dispersed visible fine, a size 0.01 mm or more. known territory Central Aldan contributed large such Kuranakh, Tabornoye others. identified gold-ore developed regional formations, widely both northeast represent huge metallogenic potential.