Abstract: Based on the understanding of geological characteristics and geochemical background characteristics of Danba area,the lower limit value of single element anomaly for 16 kinds of element is determined by adopting the mean plus the standard deviation of two times,through analysis and processing of 1∶50 000 stream sediment geochemical survey data.Based on this,five comprehensive anomaly areas were delineated respectively,called Menzigou comprehensive anomalous area,Shibanpeng comprehensive anomalous area,Ganluoba comprehensive anomalous area,Wali comprehensive anomalous area,Kongyu comprehensive anomalous area.It is considered that this five integrated anomaly zone has good ore-forming condition,and has a potential value in further ore-prospecting.Combined with regional geology and mineralization conditions,the geochemical characteristics of mineralization in the area were inferred and forecasted,and the water geochemical prospecting marks of several main minerals of copper,lead,zinc,gold,and silver are summed up.It is considered that the enrichment of gold has a relation with hydrothermalism.It is controlled by fracture belt,and generated at composite parts of fracture structure.Lead and zinc mainly occur in the ore bearing quartz veins.This research will provide guidance for the next exploration work.

Key words: Polymetallic mine, Geochemical characteristics, Prospecting marks, Prospecting direction