Study On The Ore-forming Rule Of The Tungsten-tin Polymetallic Ore In The Southwest Of The Daxing'an Mountains And The Evaluation Of The Resource Potential

In recent years,The supply of tungsten and tin ore in China is increasingly short,and the reserves of tungsten and tin deposits in mining are increasingly exhausted.However,no breakthrough has been made in the reserves of new tungsten and tin resources.Tungsten and tin ore have been transformed from traditional advantageous resources into scarce resources,and it is extremely urgent to find the next replacement base of tungsten and tin resources The southwest Section of The Greater Hinggan Mountains is located at the superposition of the paleo-Asiatic tectonic domain and the littoral western Pacific tectonic domain,with superior ore-forming geological conditions.It is an important metallogenic belt of pb-ZN-Ag polymetallic ore deposits in China.The previous research and investigation focuses on pB-Zn deposits,and the research degree is relatively low for the tungsten-Sn polymetallic deposits.Supported by a geological survey project of China Geological Survey,this paper,under the premise of in-depth understanding of the geological background of mineralization in this area,makes use of the favorable opportunity of the project to obtain certain results,and carries out a special study on the study of the metallogenic law of tungsten-tin polymetallic ore in the southwest section of The Greater Hinggan Mountains and the evaluation of the potential for finding resources.In this paper,based on the previous work,through the detailed geological,geophysical and geochemical exploration,delineated the target area of 4,the main ore-forming elements in the target area of the potential resources were estimated,and good prospecting results were obtained.The study area has favorable geological conditions for mineralization,and the strata related to polymetallic mineralization of iron,tin,molybdenum,copper,lead and zinc are mainly the Middle Permian Jess formation,the late Permian Linxi Formation and the late Jurassic Manketou Ebo Formation.The formation of metallic deposits in the study area is mainly related to the early Yanshan cycle(late Jurassic-Early Cretaceous)granitic rocks.All ore and mineralization points in the survey area are completely controlled by structural fissures.Through a comprehensive collection,summarizes the existing 1:50000 regional geological survey,mineral geology survey,stream sediment survey results data,comprehensive study the greater hinggan mountains southwest section of the ore-forming geological background and ore-forming conditions,summarizes the workspace area mineral distribution and metallogenic regularities,the main minerals prospecting model is set up,the tungsten tin ore prospecting potential in the area was evaluated,for the next step prospecting work has an important guiding role.Through this work,it is shown that the mineral resources in the study area have broad prospects,great resource potential and good prospects for prospecting.