The Metallogenic Conditions And Prediction Of Tin Deposit In Dadai Village Area Of Raohe County,Heilongjiang Province

Raohe County is located in the eastern part of Heilongjiang Province, the research area is located in the northern part of Wandashan Mountain Range, is a low hills. In this paper, the basic geological survey method of 1: 50000 regional geology and mineral resources is researched in this paper. After confirming the basic characteristics of strata, intrusive rock, volcanic rock, metamorphic rock and structure in the study area, the regional stratigraphic framework, Sequence, magmatic evolution cycle or sequence, etc., in-depth study and exploration related to the geological body and geological structure.The tectonic position in this area belongs to the Siberian plate and Wandashan plate, which belong to the Snhot activity belt. It is the Wandashan collision orogenic belt near the continental margin belt of the Pacific tectonic domain. Since the early Mesozoic Era in the Pacific rim of the continental margin of activity stage, further divided into the continental margin of the evolution of the stage of development, basin development stage of work, different fault block lifting stage.The study area is located in the northern margin of the Wandashan orogenic belt, with complicated geological structure, sedimentary processes and magmatism. The study area is located in the Wandashan Precious Metals Nonferrous Metal Mineralization Zone, where copper, tungsten, chromium, tin and other mineralization or mineralization points have been found, which has the potential to find precious metals and nonferrous metals. In 2012, 1: 20000 soil geochemical survey was carried out in 1: 50000 river sediment anomaly, and 1: 20000 soil anomaly and 1: 20000 IPP anomaly verification were carried out in 2013. The results of chemical analysis of H2, H3 and H4 in TC27 showed that the contents of Zn were 0.231,0.246,0.194%, GP6 was 1262.2 × 10-6, Zn was 3682.3 × 10-6, the contents of GP4, GP8 and GP9, GP6 of GP31 of TC24, GP6 of TC27, GP30 of TC30, and other protolith samples of more than 500 × 10-6. From the regional point of view, Heilongjiang Province, the Sixth Geological Survey in Baoqing County estuary forest found tin ore, the geological background and mineralization conditions are basically the same with the area, so that the area is looking for tin, polymetallic favorable location, Which is of great significance to prospecting breakthrough in this area.In short, from the existing geology and mineral resources, geophysical and geochemical data in the study area, this area is to find the favorable area of tin, through further work, access to comprehensive prospecting information, for the region has important significance for ore breakthrough.In this paper, the author combined with the known geophysical anomalies, geochemical anomalies and geological environment favorable to mineralization, the ore-forming conditions of tin deposits in Dabiancun area were studied in depth and metallogenic prognosis was proposed.