Abstract:
The Jinchanshan gold deposit, identified as a magmatic-hydrothermal vein-type gold deposit associated with Yanshanian magmatism, is located in the Chifeng-Chaoyang gold ore concentration area within Harqin Banner, Inner Mongolia. The ore bodies in the deposit primarily occur in the fault structural zone of the Anjiayingzi pluton. This study conducted a systematic analysis of the structural superimposed halo anomalies of the Dawa and Limazigou ore sections from south to north in the eastern mineralized zone in the Jinchanshan gold deposit. Results indicate that the axial zoning and characteristic parameters of primary haloes in Jinchanshan gold deposit differ from the typical high-, medium-, and low-temperature element axial zoning sequence in hydrothermal deposits. The overlapping of high-temperature and low-temperature elements, suggests multi-stage and multi-phase mineralization processes. For the first time, this study analyzed the correlation between elements using element correlation curves at varying elevations. F and Ba were identified as front halo elements, Au, Cu, and Ag as near-ore halo elements, and Co, Ti, and V as tail halo elements. By establishing a structural superimposed halo model, this study determined prospecting target areas. Mining validation indicates that the identified ore-discovery middle section aligns with the predicted target area.