关键词: 多金属矿床, 找矿标志, 地质特征, 接触交代型矿床, 热液脉型矿床

Abstract: In order to clarify the regional metallogenic background and deposit type of Yangmeitian copper polymetallic deposit，clarify the metallogenic control factors，and provide scientific basis for the fol‐ low-up prospecting exploration and similar deposit research in the mining area，based on the existing geo‐ logical exploration data of Yangmeitian copper polymetallic mining area，the geological characteristics， metallogenic regularity and prospecting indicator of the deposit are systematically analyzed by systematical‐ ly combing the structure，strata，magmatic rocks and mineralization characteristics of the mining area. The results show that the Yangmeitian copper polymetallic deposit is located in the triangle zone between the Nujiang fault and the Longling-Ruili fault，which belongs to the Pb-Zn-Cu-Fe-Hg-Sn-As-Au polymetal‐ lic ore concentration area of Baoshan block. The mining area inherits the regional metallogenic characteris‐ tics，develops nearly north-south faults and fold structures，and is accompanied by a large area of Cambri‐ an-Paleogene Longling-Pingda composite granite body，forming two types of deposits related to intrusive rocks : contact metasomatic iron-copper-lead-zinc deposit and hydrothermal vein-type copper-lead-zinc deposit. The ore ( mineralization ) bodies are mainly hosted in skarn and altered limestone and altered mar‐ ble beside skarn，with significant horizontal zoning. From the middle to the edge，iron ore-iron ore ( cop‐ per ore ) -copper ore ( lead-zinc ore ) zoning is developed. The folds，faults and different lithological inter‐faces in the mining area are the main migration channels of ore-bearing hydrothermal fluids. The mineral‐ ization is characterized by multi-stage，multi-stage and multi-source of ore-forming materials. In summa‐ ry，stratigraphic lithology，structural intersection，alteration and mineralization can be used as favorable prospecting indicators in the mining area. Intrusive rock activity and tectonic movement are the core control factors for the formation of the deposit.

Key words: polymetallic deposit, prospecting indicator, geological characteristics, contact metaso‐ matic deposit, hydrothermal vein-type deposit