Discussion On Inner Mongolia Tanjinggou Geological Characteristics Of Graphite Ore Deposit And The Cause Of Formation

The study area is located in the eastern part of the Qilianjia Middle East trough（Ⅴ）-the eastern end of the transition zone（Ⅴ₁）.Qilian-North Qinling strata（V₁²）,and the North Qilian strata(V₁^2-1),which is the North China strata（Ⅴ）,Qin Qikun strata The transitional zone of the western margin of the western China,in which the Carboniferous is the coal-bearing strata of the coastal lagoon marsh facies.In this paper,through the study area of the study area,magmatic rock,structural features,ore body characteristics,mineral characteristics and geophysical characteristics of a comprehensive analysis found that:The study area has experienced many types of crustal tectonic changes,in which the near-east-west tectonic is the main structure in the area（which determines the formation of the uplift zone,the depression zone and the long-term eroded uplift belt that provides mineralization for the sedimentary minerals Material source,depression basin is metallogenic material suspension of the place）,limiting the Wei Ning Basin Carboniferous coal-bearing system of the distribution,direct control of the deposition of coal.The Carbon Mine is located within the tectonic zone.Crystalline graphite ore deposit produced in the Paleozoic Carboniferous shallow metamorphic rock of the graphitization of carbonaceous plate rock folder sandstone,occurred in a certain level,with a layer of control.Ore body morphology is mainly layered,like layered,ore body production and the same wall,the general contact with the surrounding rock is not clear（mine and the surrounding rock or stone by the sample control）;coal-bearing rock is coal.The material basis of graphite,mineralization is the internal condition of crystalloid（soil）graphite mineralization.Experiments show that graphite can be formed in a very high carbon content and a relatively high temperature and a reducing atmosphere.Coal seam in the coal seam,coal-bearing metamorphic shale can be coal-based graphite mineral source layer.At the same time,the number of each element,such as the amount of sulfur and the physical properties of sulfur-containing substances to a certain extent,to inhibit or promote the process of coal graphitization.The high temperature generated by the intrusion of magmatic rocks provides thermal conditions for the graphitization of coal seams to cause thermal contact metamorphism and is an important metallogenic external condition.The magmatic thermal field caused by the intrusion of magmatic rocks causes a change in the geothermal gradient in the region,and the degree of metamorphism of the coal varies with the gradient of the magmatic rock intrusion.Based on the systematic analysis of metallogenic geological characteristics,it is believed that this area has good graphite mineralization geological conditions and prospecting potential.