GOLD MINERALISATION OF MALYI KHINGAN. REGULARITIES IN LOCALISATION, LODE GOLD ISSUE

Abstract

Geology and gold mineralisation of the Sutara and Priamurye auriferous districts in the Jewish Autonomous Region are briefly reviewed in the paper. Placers have being mined for more than a hundred years in these districts but lode deposits are unknown. The areas once with rich placers, poorly rounded gold, intergrowths of gold with quartz, nuggets, and other indications of mineralisation, have been delineated with the intent of getting new data to undertake the assessment of the region's potential for lode gold. Early Paleozoic granitoid intrusions are reconstructed to a depth of 6 km from geophysical data. This allowed to infer that gold mineralisation is probably genetically related to these granites and the zone of their endo- and exo-contact with Riphean carbonaceous terrigenous-carbonate thick sequences. It is recommended that these zones be explored for lode gold deposits, possibly of a stratiform type.