Mapping LCT Pegmatites: An Aeromagnetic Signature for Lithium Mineralization in Boki, South-South, Nigeria

Background: More attention has been drawn to Nigeria’s solid minerals sector in recent years, in an attempt to divert from over reliance on oil produce to grow its economy. Boki south-south which is a part of the oban massif possess the potential to host economical quantity of lithium due to its geologic and structural settings. Methods: Geophysical survey was employed to map the suspected lithium-rich pegmatic veins in the study area. Aeromagnetic survey was utilised for the survey. the survey was carried out using flight lines spaced at 500 meters, with tie lines at 2- kilometer intervals. An average terrain clearance of 80 meters was maintained to ensure highresolution detection of subsurface features. The flight lines were oriented northwest–southeast (NW–SE), while tie lines followed a northeast–southwest (NE–SW) orientation. Results: A geologically favorable environment for lithium exploration were delineated with high magnetic anomalies, elevated potassium concentrations and presence of numerous intersecting lineaments which all together indicate a structurally complex and potentially mineralized terrain. Conclusions: The northeastern and central parts of the study area exhibits signatures consistent with felsic lithologies, potassic alteration, and possible hydrothermal activity.