关键词: 银铅锌矿, 深部找矿, 地质特征, 成矿模式, 找矿预测, 层体耦合

Abstract: Lengshuikeng Pb-Zn-Ag Ore Field is the one the important ore concentration area in Wuyishan polymetallic metallogenic belt.In order to identify the geological characteristics of the ore field,combing with the regional metallogenic geological background,and based on the some related geological and exploration results in Lengshuikeng Ore Field,through deep analysis of typical ore-bodies geological characteristics,ore structures,wall rock alteration characteristics,the mineralization periods are divided and the isotopic geochemcial characteristics is summarized,besides that,the layer-body coupling metallogenic model is proposed.Based on the above discussion results,the newly geochemical exploration results of the ore field and its adjacent areas are analyzed comprehensively,and three metallogenic prediction areas are divided,they area Baojia deep prediction area,Madi-Bishan (Yanshan) prediction area and Bixi-Yangsiban prediction area.The metallogenic potential study results of the three prediction areas show that:the depth of Baojia mining area especially for the depth of the porphyry-type ore-bodies are the important prospecting target area of stratum controlling type ore-bodies;Madi-Bishan (Yanshan) prediction area is the important prospecting target area of the deep mineralization bodies buried in metamorphic rocks and volcanic rocks;Bixi-Yangsiban prediction area is the important prospecting target area of deep concealed porphyry type Ag-polymetallic and deep concealed stratum controlling type Pb-Zn ore-bodies.The above study results related to the geological characteristics and prospecting prediction of Lengshikeng Ag-Pb-Zn Ore Field can provide some reliable reference for the further prospecting and exploration works of Ag-Pb-Zn deposits in the ore field or its adjacent areas.

Key words: Ag-Pb-Zn deposit, Deep prospecting, Geological characteristics, Metallogenic model, Prospecting prediction, Layer-body coupling