Atede, Abraham Uwodi2023-12-142023-12-142018-02-16A DISSERTATION SUBMITTED TO THE SCHOOL OF POST-GRADUATE STUDIES, NASARAWA STATE UNIVERSITY KEFFI, IN PARTIAL FULFILLMENT OF THE REQUIREMENT FOR THE AWARD OF DEGREE OF MSC IN MINERAL EXPLORATIONhttps://keffi.nsuk.edu.ng/handle/20.500.14448/5747Inadequate data on the geochemistry of the rocks in southern Nassarawa Eggon area is identified as a gap in the geological information of the area. The geochemical characterization of the various rock units being considered as the means through which the observed gap could be filled was carefully carried out. Detailed geological mapping and sampling of major rock units, as-mined ore and weathered materials from the area with the aid of Geographical Positioning System (GPS), compass clinometer, cutlass, sample bag and field notebook was carried out. Selected rock, as-mined ore and weathered materials were analyzed for major and trace elements using Atomic Absorption Spectrophotometer (AAS) and X-Ray Fluorescence (XRF). The variation diagrams based on the geochemical data of rocks revealed overall apparent decreased in major element composition with increased SiO2 content, signifying high fractionation of mafic minerals like biotite. Discrimination diagram on the other hand suggest igneous origin for porphyritic biotite granite, pegmatite and dolerite while ferruginous sandstone have for sedimentary source. The bar chart revealed high concentrations of Fe and Cu in as-mined ore of lead/zinc. Thus, Fe and Cu were revealed as other economic mineral potentials of the as-mined ore of Pb/Zn contained in pegmatite.enThesis