Metallogenic Geological Characteristics And Metallogenic Regularity Research Of Jili Mining Area In Xiwuzhumuqinqi, Inner Mongolia

According to the plate structure,the geodetic tectonic position of the study area is located in the joint of the Songliao plate in the east,the North China plate in the south,and the Siberian plate in the north.It is the Hualixi fold belt,with the trend of North East and North-Northeast(i.e.,Inner Mongolia central trough fold system,Sunite Right Banner Hualixi late trough fold belt,the northeast end of the Meilindaba-Daqing Ranch-Dalundaba break).The Xilinhaote micro-plate is in the zone,and the Jili mining area is located on the edge of the micro-plate.According to our research,folds and faults are very developed in Jili gold and copper mine,Xiwuzhumuqin.The fault structure controls the distribution of magmatic rocks in the later period and forms the NE-trending,NW-trending,near-north-north and near-East-trending tectonic belts.Through the analysis of tectonic and ore-forming geological characteristics,it is believed that the copper-gold deposits in the study area are produced in quartz veins and silicified zone where the mylonian ductile shear zone,silicification and keratinization are developed.The more silicification and keratinization are developed the more enrich mineralization can be found.Through the study of the genesis of the deposit,it is considered that the deposit is controlled by the NE-trending and NW-trending fault structures,and has the genetic characteristics of the quartz vein type gold deposit in the hydrothermal deposit.The geophysical anomaly is in a high-polarization,low-resistance section,and the shape is relatively regular,with a considerable large scale,and the closed eclectric anomalty is good mark of the deep concealed orebody.Six mineralized zones were found in the study area,with 11 gold veins,2 copper veins,8 molybdenum ore bodies and 1 silver-lead vein.The resource reserves were estimated for the two larger ore bodies in this study and the amount of controlled intrinsic economic resources(332)was calculated to be 15447.59 t,the metal amount was 181.54 kg,and the inferred intrinsic economic resources(333)41812.03 t,metal The amount is 194.05 kg,the predicted resource is(334)245,170.70 t,and the metal amount is 375.93 kg.The total ore amount is 302,430.34 t,and the metal amount is 751.52 kg.Based on the field geological exploration of the Xiwuzhumuqin Jili gold and copper mines,and the comprehensive analysis of the previous data,this study focused on the ore-controlling factors of the gold and copper mines.And then,the ore-forming law had been analyzed,which provided a basis for the next exploration work.