GEOCHEMICAL CHARACTERISTICS AND PROSPECTING POTENTIAL OF WEIYUANGOU GOLDFIELD IN LUSHI COUNTY, HENAN PROVINCE

Weiyuangou goldfield of Lushi County, Henan Province, is located in the North Qinling polymetallic metallogenic belt on the southern margin of North China Block, where Kuanping rock group is dominantly exposed. Waxuezi fault and its secondary faults crossing the orefield are the main ore-controlling structures in the area, with strong metamorphism and deformation. Based on the geological and geochemical characteristics of the area, through the element correlation analysis, geochemical element distribution and structural distribution, it is found that the anomalies and gold ore/mineralized bodies are well corresponded to the structure in space, but the anomaly range has a certain displacement. The Kuanping rock group is favorable to mineralization, with certain lithological selectivity. It is considered that the overall denudation of the deposit is shallow according to the element combination characteristics. From above, it is concluded that there is a single enrichment of Au in the area, and the correlation between the main ore-forming element Au and other elements is low. The Au anomalies are mainly distributed around the fault zone. The distribution of gold ore/mineralized body is strictly controlled by structure. Single element gold deposits are possibly formed in the study area.