| The study area is located in the Yangtze continental blocks in Yangtze continental block in eastern yunnan passive margin level 3 tectonic units,is sichuan yunnan guizhou metallogenic domain northeast yunnan lead-zinc polymetallic metallogenic belt,complex geological structure and magmatic activity is strong,and the ore-forming geological condition is good,north of the study area have been found to have the huize mine factory and kirin factory super large lead-zinc mine,such as study area have rain the importance lead-zinc mine.It is the core area of lead and zinc base and the most potential metallogenic area.Previous geological and geochemical exploration data collected based on the system and on the basis of research results,combining with the field geological investigation and indoor research,summarizes the ore-forming geological conditions,the rain the importance area and represented by the huize lead-zinc deposit,guided by the "trinity" prospecting prediction theory summarizes the typical metallogenic zone type of metallogenic geologic body,face or ore-controlling tectonic metallogenic structure and mineralization characteristics of symbol,through geochemical and geophysical prospecting method to extract the favourable metallogenic information and prospecting marks,and established a comprehensive information prospecting model,combined with metallogenic geological conditions and geophysical-geochemical prospecting information,delineated prospecting target area.Through the above work,the following understanding has been achieved:1.The main factors controlling ore deposits in huize lead-zinc mine are analyzed,and it is believed that the ore deposits are mainly controlled by structure,strata and lithology,among which the structure plays a particularly significant role in controlling ore formation.The deposits occur mainly in purplish red and light purple medium-coarse dolomite formed by hot water jet deposition.2.The interpretation results of geophysical data in the area show that the high-precision magnetic anomaly is not in good agreement with the physical parameters of the geological body,but it reflects well the distribution of the structure in the area and has certain significance for the inference of the structure.The distribution of lead-zinc mineralization has the characteristics of low resistivity and high polarizability in IP mid-step measurement The distribution section of high polarizability in IP mid-ladder profile is in good agreement with the mineralization distribution section3.The geochemical feature area of as-zn-sb-hg-ag-pb-cd-ge-bi-cs-w-tl-f-p-u,based on sediment measurement and petrogeochemical profile measurement,mainly reflects the geochemical characteristics of the main distribution area of carbonate rocks.The polymetallic elements dominated by Pb,Zn and Ag fit well with each other,and were associated with abnormal Cd,As,Sb and Hg.Such anomalies are mainly influenced by sinian,Cambrian,carboniferous and other lead-zinc bearing strata.Therefore,the single element or combination anomaly of pb-zn-ag-cd has good encapsulation,obvious concentration and large abnormal area,which is the geochemical ore prospecting indicator for lead-zinc mineralization in the study area4.Based on the summary of the geological conditions of the mining area,the results of physicochemical exploration and the "trinity" ore-forming elements,a comprehensive information ore prospecting prediction model was established,and three ore-prospecting target areas were delineated according to the multiple information of the study area. |
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