Geochemical Signatures of Pegmatites of Odu-Ore Area, Southwestern Nigeria: Indications for Rare Metal, Precious and Industrial Minerals
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This investigation was conducted to ascertain the geochemical properties and economic potentials of recently mapped pegmatites around Odu-Ore which is a component of the polycyclic Precambrian Basement Complex in southwest Nigeria. Ten (10) pegmatite samples were subjected to whole-rock geochemical analysis using Inductively Coupled Plasma Mass Spectrometry (ICP-MS) at Activation Laboratories, LTD. (ACTLABS), Canada. According to field studies, the region is underlain by granite-gneiss, quartzite, pelitic schist, amphibolites, and pegmatites. Virtually all of the pegmatite samples were found to be of igneous ancestry by comparing the Na O/Al O and 2 2 3 K O/Al O plots, while the Rb/Sr plot showed that the pegmatite bodies, which are now well-exposed, were deposited 2 2 3 between 20 and 30 km of crustal thickness during the late-to-post (Pan African) tectonic period (emplacement). Mineralization potentials range from high to moderate in this area; however, pegmatites hosted by pelitic-schist and those at schist-amphibolite contacts showed a higher degree of potential than those hosted by other lithologies, and many of the bodies have the potential to produce industrial minerals
Publication Info:
Author: Alebiosu, M.T.; Aremu, A.O.; Waheed, L.A. and Omorinoye, O.A.
Volume: 61
Issue: September
Published By: Journal of Mining and Geology Vol. 61(1) 2025. pp. 25 - 37, 2025-01-09