Geological Behavior (GBR)

Interpretation of airborne magnetic and radiometric data in Birin Gwari area of Northcentral Nigeria reveal some anomalous areas which were further explored using ground Geophysics information of magnetic, induced polarization and resistivity survey. Combined results of the geophysical methods, reveal a wide range of linear structures likely veins, which are believed to host ore mineralization. Careful interpretation and technical assessment of the results, attributes some of these structures as probably mineralized veins with varying degrees of characterization. Their responses to physical parameters also revealed some as conductive and the others as non-conductive. Some are conductors within a resistive host while others are within a conductive host. Several of such bodies trending mostly N-S, NE-SW and NW-SE were identified. And it is instructive to note the high degree of correlation between the airborne and ground geophysical data. About seven of the anomalous zones characterized by high chargeability and high resistivity were identified from nine IP profiles within the study area. The geophysical characteristics of the identified vein lengths range from less than 50m to maximally 600m while the width ranges from few cm to maximally 20m. The identified veins were plotted on their mineral prospective maps. Test drilling should be carried out on the priority targets to authenticate the above submission. The mineral prospective priority target maps should be used as guides for the drilling. Other exploration methods such as geochemical sampling of soil and rock samples should be integrated with this geophysical report to see if high concentration of gold coincides with geophysical anomaly and priority targets; this will assist in more precise drilling of target location.