Isotopic-Geochemical Features of the Generating of the Precious Metal Formations of the Jiamusi-Khanka Graphite-Bearing Province

Abstract

Numerous occurrences of the precious metal mineralization located solely in the Jiamusi-Khanka province were detected within a single zone of the regional graphitization with ten kilometers submeridional strike towards the adjacent territories of the Primorsky krai (Russia) and the Heilongjian province (China), all the above said findings being obtained with the participation of the authors of the present scientific article. There are features of Dalnerechensk group (with Filinskoye being the largest of them), deposits of of Lesozavodsk group (Tamga, Turgenevo) and graphite-ore giant of Liumao Mashan group of the Heilongjian province in the Northern, central and Southern sides of this province respectively. The results of the isotopic-geochemical study of the graphite, the sulfides and the carbonates of these deposits, the formation of which has a common history with the one of the precious metal mineralization, indicate the participation of deep derivated recomposed fluids and the light isotopic-biogenic matter of the host rocks in the ore formation. Besides, the carbon and the oxygen from at least two more isotopic-contrast sources intruded into the ore-forming system. Some minerals were formed under the influence of the intrusive acidic melts on the carbonate rocks, other one were generated due to the involvement of the meteoric waters in the ore formation.