关键词: 银铜铅锌矿床, 地质特征, 找矿标志, 成矿规律, 综合找矿模型, 找矿靶区

Abstract: Bianqiangli mining area is located in the eastern of Variscan eugeosyncline fold belt of Inner Mongolia-Great Khingan fold system，it is distributed in Haobugao-Aonaodaba Cu-Pb-Zn metallogenic belt in Inner Mongolia，especially for the NW-oriented and NE-oriented fault tectonic development zones are favorable for mineralization.A number of large and medium-sized mineral deposits such as Shuangjianzishan super-large hydrothermal deposit and Haobugao skarn type copper polymetallic deposit have been found in the metallogenic belt.In order to further study the metallogenic geological conditions and metallogenic regularity of the metallogenic belt，based on the 1∶50 000 regional geological survey，Bianqiangli mining area is selected to conduct geological work，to be specific，1∶10 000 geological sketch survey， 1∶10 000 electrical measurement，1∶25 000 soil profile measurement and trough engineering are conducted in the area.The geological survey data obtained from the mining area are studied comprehensively，the results show that:①eight mineralization belts are delineated in the mining area，they are located at the structural alteration zone，ranging from 20 m to 550 m in length，the width is 0.6~8.0 m，the alteration types related to mineralization are mainly for silicification，galena mineralization，sphalerite mineralization and brass mineralization；②four orebodies are delineated，among them，two lead orebodies，one Ag-Pb orebody，one Ag-Cu-Pb-Zn orebody，deposit genesis belongs to tectonic hydrothermal type deposit，the orebodies are distributed with the shapes of vein， lenticular， ribbon，etc.；③the mineralized zone is strictly controlled by geological structures，they are distributed with the shapes of ribbon and vein in NW and NE direction，the secondary toughness-ductile brittle structure zone are favorable positions for ore controlling and storage；④ten soil geochemical geochemical anomalies and five IP anomalies are delineated in the mining area，the two kinds of anomalies are matched with each other，eight mineralized zones and four orebodies are distributed in geophysical and geochemical anomalies.Based on the above discussion results，according to the characteristics of deposits and geophysical and geochemical anomalies，the integrated prospecting model is established，based on the guidance of the model，three prospecting target areas （named as B1，B2 and B3） are delineated in the mining area，among them，B2 area can be taken as the most promising area，the orebodies with mining valuable can be found by further work in the mining area；besides that，according to the prospecting results by ground engineering，it is predicted that prospective lead and zinc resources of the mining area can be reached above medium level.

Key words: Ag-Cu-Pb-Zn deposit, Geological characteristics, Prospecting indicator, Metallogenic regularity, Integrated prospecting model, Prospecting target area