Integrating field data, petrography, and induced polarization geophysical survey for 3D modeling and delineation of gold mineralization targets in Bissiang area, Nyong group, Cameroon

Abstract

Stream sediments sampling, lithological observations and induced polarization (IP) survey were carried out in Bissiang area, located at the northwestern border of the Congo Craton in Cameroon. The aim of the study was to delineate potential gold targets through the integration of field, petrographic, and geophysical data. Most stream sediment samples yielded alluvial gold particles, suggesting a mineralized catchment composed of quartzite, schist, and gneiss. Inverted chargeability sections helped identify Very High Chargeability (VHC) and High Chargeability (HC) domains, interpreted as potential primary and secondary gold targets, respectively. Their spatial correlation revealed a N-S-trending anomaly affected by a dextral fault, and a 3D model of the VHC (25–44 mV/V) and HC (15–25 mV/V) domains was developed. The volume of the primary VHC targets was estimated at 340,388,500 m 3 and that of the secondary or HC targets at 705,358,000 m 3 . These results provide a basis for further exploration and drilling campaigns.