Synthetic Information Metallogenic Prediction In The Xing'an Area, Middle-north Section Of The Daxing'an Mountains

The Xing'an area is located in the middle-north section of the Daxingan mountains.The regional tectonic location belongs to the Zhalantunblock in the eastern margin of the Siberian plate,in the Zhalantun-East Ujimqin passive continental margin of volcanic type,which belongs to the northern section of the Daxing'an mountains volcanic belt in the circum-Pacific tectonic domain in Mesozoic.The outcrop in the study area contains the Paleoproterozoic Xinghuadukou Group,the Upper Devonian Daminmountain Formation,the Manketouebo formation,Manitu Formation and Baiyingaolao Formation of the upper Jurassic and the Longjiang Formation of the lower cretaceous,quaternary alluvial and swamp sediments.Intrusive rocks are widely distributed in the area.The rock-forming age is late carboniferous,late Jurassic,early cretaceous,and the rock type is medium-acid rock,mainly late carboniferous intrusive rocks.The main rock types of volcanic rocks in the area are lava-like clastic rocks and pyroclastic rocks.Metamorphic rocks are sporadically exposed.The regional metamorphic rocks are mainly basement metamorphic rocks.The rock types are mainly regional metamorphic rocks.The general direction of the structure in the study area is NE-SW.The ore-controlling fault structure in this area is mainly EW and NE,which provides the channel and ore host structure for the mineral.Based on the geological background of the known mineralized bodies in the study area,the comprehensive analysis of 1:50,000 geophysical and geochemical anomaly characteristics of known ore bodies of all things was carried out.The ore-forming conditions are summarized.On this basis,the key abnormal inspection work is carried out in jinchanggou area.The main work is to carry out 1:10000 geological sketch survey,the ground magnetic survey,electronic measurement,soil survey and sampling.Then comprehensive research,two Molybdenum mineralization points were found in the acid pyroclastic rocks of the ebo formation,where erritization and silicificationare very strong and rocks are fragmented and more fragmented.A preliminary ore-prospecting model is established by comparing the geological and geophysical information of the study area.The study area was initially divided into two B-type metallogenic prospective areas.Among them,the main minerals in the Guangtou mountain metallogenic prospect area?B-1?are tungsten,molybdenum and copper polymetals.Jinchanggou-Wudaogou metallogenic prospect area?B-2?mainly focuses on molybdenum polymetals.The prospecting model is predicted according to the research area.The geological and physicochemical information in the area were compared to delineate a class of secondary target area.Mo Ag and W are the main metallogenic elements in the Jinchanggou target area?B-2-?₁?.The molybdenum mineralization point in the target area has the prospect of further work.