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Ifeoma Ekeleme
Uzoegbu MU*
I.E Abalaka
A.E Olorunyomi
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Ifeoma Ekeleme
Uzoegbu MU*
I.E Abalaka
A.E Olorunyomi
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International Journal Geology and Mining

Petrographic evaluation of rocks around Arikya and its environs, North Central Nigeria

Ekeleme IA, Uzoegbu MU, Abalaka IE, and Olorunyomi AE.

Accepted 20 May, 2017.

Citation: Ekeleme IA, Uzoegbu MU, Olorunyomi AE, Abalaka IE AI (2017). Petrographic evaluation of rocks around Arikya and its evirons, North Central Nigeria. International Journal Geology and Mining 3(1): 103-109.

Copyright: © 2017 Ekeleme et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.

Abstract

The study area covers Arikiya and parts of Wayopini in Lafia Local Government Area of Nassarawa State, situated in central Nigeria. This falls within the Basement Complex of central Nigeria that forms part of the Upper Proterozoic mobile belt extending from Algeria across the Sahara into Nigeria, Benin and the Cameroon. The area consists of gneisses, granite gneisses, migmatites and Porphyroblastic gneiss. Dolerite dyke and Pegmatite form intrusions into the host rocks. The major rock forming minerals are plagioclase, orthoclase, quartz and biotite. The major structures includes joints, foliations, quartz vein, fold and fault, Predominant structural trends include the NE-SW and NW-SE with minor E-W and N-S structural trends which are in agreement with the general trend of structures in the Basement Complex. Mineral resource potential of the study area include feldspar and mica from the gneiss and pegmatites as well as  alluvial garnets, columbites, tantalite, and cassiterite (derived from the  pegmatites) as evidenced from mining activities along river channels in the entire area.

Key words: Basement Complex, Gneiss, Minerals, Older granite, Petrography, structures.