Analysis Of Metallogenic Geological Characteristics And Prospecting Potential In Qiyishan Area,Ejinaqi,Inner Mongolia

Based on the field data obtained from the geological exploration of the tungsten molybdenum polymetallic ore in qiyishan,Ejina Banner,Inner Mongolia Autonomous Region,combined with the regional geochemical remote data of the mining area,this paper analyzes the characteristics of the ore-forming geological conditions,ore genesis types,ore body occurrence rules of the tungsten molybdenum polymetallic ore in qiyishan,and then evaluates the regional prospecting potential of the study area In the next step,the concept of prospecting in the periphery and depth of the mining area is put forward.The study area is located in the early Paleozoic active continental margin belt??₁?in the northeast margin of Tarim block???,the yongzhuquan Dongqiyishan Hercynian magmatic belt??₁⁶?,and the shibanjing Dongqiyishan tungsten,molybdenum,copper,iron,fluorite metallogenic belt??₈²?in the Ejina yaganwari iron,copper,molybdenum,nickel metallogenic belt??₈?.The study area has complex geological structure,developed faults,frequent magmatic activities and superior metallogenic geological conditions.Based on the study of ore controlling factors of tungsten molybdenum polymetallic deposits in the study area,it is considered that the Precambrian basement provides a good material source for gold polymetallic mineralization;the collision orogeny of Devonian resulted in the differentiation and evolution of magma to form ore-bearing hydrothermal solution;the near-north-south and north-east faults provided an important channel for the migration of ore-forming materials;and various tension fractures,interlayer fractures,contact belt structures,mylonitized belts are the main channels Main ore storage structure.The alteration development of rock mass and surrounding rock in the study area,different alteration is often related to different mineralization.Tungsten molybdenum ore is closely related to silicification;tin ore is closely related to skarnization and hornification;rubidium ore is closely related to albitization;fluoritization often forms fluorite.This paper summarizes the ore controlling factors of strata,structure,magmatic rock,geophysics,geochemistry and alteration,and preliminarily discusses the metallogenic model of tungsten molybdenum polymetallic ore in this area?"Precambrian ancient landmass+NE trending structure+S-type granite+W anomaly+related alteration"?,and discusses the metallogenic geological characteristics,ore controlling factors,ore prospecting indicators and mineralization of tungsten,tin,molybdenum and rubidium in the study area The exploration anomaly zoning and mineralization zoning are summarized.Finally,the metallogenic prospect of the study area is analyzed,and the conception of exploration in the periphery and depth of the study area is put forward.It is suggested that the comprehensive geological,geophysical and geochemical exploration data should be combined with the comprehensive method of deep drilling to explore the deep and peripheral favorable ore areas in the study area.