关键词: 金多金属矿, 班公湖—怒江成矿带, 地质特征, 矿床成因, 找矿预测, 找矿标志, 找矿靶区

Abstract: The Rechang gold polymetallic deposit is located in the eastern section of Bangonghu-Nujiang metallogenic belt. The geotectonic position of the deposit is located in the southern margin of Naqu-Luolong forearc basin. The metallogenic geological background and metallogenic geological conditions are superior. It is a favorable area for searching for gold,silver, copper,and lead-zinc polymetallic deposits. In order to preliminarily understand the prospect of mineral resources in the area, a section with large mineralization potential is proposed. The technical method combination of 1 ∶10 000 soil survey,1 ∶10 000 geological mapping,remote sensing geological interpretation,induced polarization sounding,and engineering verification is adopted to conduct a preliminary evaluation of the mining area. Nine gold ore bodies,three gold and silver ore bodies,and four copper ore bodies are found. The genetic type of the deposit is preliminarily determined to be porphyry epithermal hydrothermal type. The ore-forming rock body is a concealed body of biotite monzonite granite porphyry. On this basis,through the comprehensive study of the geological characteristics,geophysical and geochemical anomaly characteristics,and remote sensing image characteristics of the deposit,the prospecting indicators of the deposit are systematically summarized,and three prospecting target areas with great mineralization potential are delineated,which provides a basis for subsequent exploration work deployment. The research results also have important reference and enlightenment significance for regional prospecting in the eastern section of the Bangonghu-Nujiang metallogenic belt.