Abstract: Combing with the regional geological background and the geological exploration results of the Nanpo copper deposit in Mengla county,Yunnan province,the ore-forming geological conditions,source of ore-forming materials,regularity of mineralization(relationship of source bed and ore-forming,relationship of stratigraphic position and ore-forming,relationship of formation lithology and ore-forming,relationship of tectonic and ore-forming,relationship of interaction zone with light purple and ore-forming)and genesis of mineral deposit in the mining area are analyzed in depth,the ore-forming factors of the Nanpo copper deposit are summarized,the geophysical-geochemical anomalies of the mining area are interpreted.The results show that:①the Nanpo copper deposit is mainly controlled by the tectonic,stratigraphic position,palaeosedimentary environment and lithologic,the secondary enrichment copper ore-body of the Nanpo copper deposit is closely associated with tectonic;②the adjacent rock stratum is the main ore-forming materials source,the ore-bearing strata("purple formation")is the most representative adjacent rock stratum;③the average apparent polarizability value of the copper sulfide ores in the mining area is 4.9%,the presence of sulphide is displayed by the significance characteristics of high polarization and medium resistance of the copper sulfide ores in the mining area;④the I#¹、I#²、I#⁶ anomalies are distributed with the scattered points and beaded form,they are constructed the beaded form anomalies that is basically identical to the tectonic direction(NEE) in mining area,the anomalies characteristics are consistent with the mineralization clues that are already found in mining area;⑤the anomaly intensity of Ag,Cu and As are higher than other elements,the the HSI#、HSII# anomaly centers are fit well with the I#¹ geophysical anomaly and the NW-trending fracture.Based on the prospecting information that is discussed in this paper,the prospecting prospective of the mining area is discussed in detail,therefore,the central and southeast part of the mining area are delineated as the favorable prospecting target areas to provide reference for the further prospecting work in the mining area.

Key words: Ore-forming geological conditons, Ore-forming materials source,Ore-forming regularity, Genesis of mineral deposit, Ore-controlling factors, Prospecting Prospective, Prospecting target area