Metallogenic conditions and ore-prospecting of gold deposit in Baokeng area, Shexian County

The Baokeng area is located in southwest Shexian-Sanyangkeng Cu-Pb-Zn-Au-Ag polymetallic metallogenic prospective area, and hosts superior metallogenic conditions. The metallogenic conditions and genesis of gold deposit in Baokeng area are discussed through geological mapping, 1:10 000 scale of soil geochemical survey and trenching. The results show that Baokeng gold deposit is mainly located in the Neoproterozoic Changqian Formation which underwent obvious deformation and are generally characterized with high gravity and low magnetism by geophysical exploration, and that the ore bodies occur in the NE direction geochemical anomaly rich in Au, As and Sb. The deposit is hydrothermal type controlled by shear structure.We propose that the gold may be enriched by great activiation of shear structure in low-gold-content, low-metamorphic strata with intensive structural activity. This understanding provides a theoretical basis for gold prospecting in ductile shear zone of this area.