Abstract:
The Xiaojinchang Area is located in the eastern segment of the Hanjiayuanzi Fe-Au metallogenic sub-belt, possessing favorable metallogenic geological conditions and prospecting potential. A 1∶10 000 soil geochemical survey was conducted in the Xiaojinchang Area to rapidly delineate prospecting targets and clarify prospecting directions, with systematic analysis conducted on its geochemical characteristics and a focus on element distribution patterns and anomaly characteristics. Based on test data for five metallogenic elements (Au, Ag, Cu, Pb, and Zn), correlation analysis, cluster analysis, single-element anomaly analysis, and integrated anomaly analysis were performed. A total of 51 single-element anomalies and four composite anomalies were delineated. Preliminary evaluation of the regional prospecting potential was conducted by combining field geological surveys. The results indicate that Au and Ag anomalies are characterized by high anomaly values, large scales, and prominent concentration centers, with well-overlapping composite anomalies, indicating that they are favorable metallogenic elements. Based on element association characteristics and metallogenic geological conditions, composite anomalies No. Ⅱ, Ⅲ, and Ⅳ were identified as ore-induced anomalies and prioritized as prospecting targets. Comprehensive analysis of ore-controlling factors suggests that the Xinghuadukou Group strata serve as an important source bed, with the contact zones with Middle Ordovician granodiorite and fracture-developed areas being favorable sites for mineralization. The findings provide a scientific basis for further mineral exploration in the Xiaojinchang Area.