关键词: 金属矿, 　深部找矿, 　层控型矿化, 　找矿方向, 　电法找矿, 　隐伏矿体

Abstract: Damingshan Area is located in the western part of Nanling polymetallic metallogenic belt,it is the important polymetallic orefield.Nahangou Wpolymetallic deposit is distributed in the northwest of Damingshan Anticline,and the west of Qifeng Short Axis Anticline.The metallogenic of Nahangou mining area is closely related to IndosinianYanshanian granite,deep fracture and its fissure system,the orebodies are controlled by formation lithology to some extent.Based on the prospecting and exploration results of Nahangou Wpolymetallic deposit,the distribution characteristics of formation,structure and magmatic rock of the mining area are discussed systematically,the mineralization types are divided,and its distribution characteristics are studied in depth.The study results show that:①Nahangou mining area is located in the west wing of Qifeng Short Axis Anticline,the strata of the mining is distributed with monoclinal type,the strata exposed in the mining with large areas is Lower Devonian Yujiang Formation (D1y),Lower Devonian Nagaolign Formation (D1n) only distributed in the northeast of the mining area,Huangdongkou Formation (∈3h) of the Upper Series of Cambrian System and Lower Devonian Lianhuashan Formation (D1l) are both concealed strata in the mining area;②faults are well developed in the mining area,the fault types is mainly for NW trending fault,secondary for NE trending fault and near EW trending fault,SN tending fault is rare in the mining area;③the magmatic activities are developed frequently in the mining area,the magmatic activities are developed from Indosinian to Yanshanian,the magmatic rocks in the mining area is mainly for Yanshanian intrusive rock,it is distributed with the types of rock strains,rock dykes and rock dikes;④W-polymetallic mineralization types in the mining area can be divided into stratabound type mineralization and porphyry type mineralization,the stratabound mineralization is the most important mineralization type in the mining area,the mineralization development in the mining area is controlled by strata,structures and granite.Based on the above discussion results,combing with the deep prospecting and exploration results in the mining area obtained in recent years,the comprehensive analysis results show that deep prospecting potential of the mining area is good.In order to realize prospecting breakthrough of deep prospecting work in the mining area,it is suggested that drilling engineering should be further conducted,so as to control the deep orebodies and verify the magnetic anomalies and geochemical anomalies in the mining area,electrical methods can be used to found the concealed bodies in the depth of mining area.The above study results related to the geological characteristics and deep prospecting potential of Narhangou Wpolymetallic deposit in Nanning City,Guangxi Province can provide some reliable reference for further conducting prospecting and exploration works of Wpolymetallic deposits in the mining area or the whole Damingshan Area.

Key words: polymetallic deposit, Deep prospecting, Stratabound mineralization, Prospecting direction, Prospecting by electrical method, Concealed orebody