relation: http://eprints.covenantuniversity.edu.ng/18261/
title: MICROSTRUCTURAL INTERPRETATION OF THE  GARNET-SILLIMANITE-BEARING GRANITE GNEISS  OF IKARE AREA, SOUTHWESTERN NIGERIA
creator: Oziegbe, Olubukola
creator: Oziegbe, O.
subject: QH Natural history
subject: QH301 Biology
subject: QR Microbiology
description: This study presents microstructures from the granite gneiss of the Basement complex of southwestern Nigeria.  The granite gneiss of Ikare area comprises of the mineral assemblage; garnet, biotite, K-feldspar, quartz,  plagioclase, sillimanite and opaque minerals. K-feldspar porphyroblasts have cuspate interstitial quartz grains,  also quartz grains are included in K-feldspar. Most K-feldspar grains are highly strained and in some cases are  fractured. Prismatic and fibrolite-type sillimanite are both present. Biotite is closely associated with fibrolitetype  sillimanite. Sillimanite was observed to mimic the foliation produced by biotite. K-feldspar is the dominant  mineral and could have formed by the dehydration reaction of biotite + plagioclase + quartz + sillimanite "  garnet + K-feldspar + melt. Microscopic structures such as strained feldspar grains, micro-fractures in Kfeldspar,  simple twinning in K-feldspar, myrmekite, mimicking textures, microperthitic intergrowth and cuspate  volumes of quartz surrounding K-feldspar are indicative of melt-bearing and solid-state deformation of  regional metamorphic rocks.
date: 2023-05-10
type: Article
type: PeerReviewed
format: application/pdf
language: en
identifier: http://eprints.covenantuniversity.edu.ng/18261/1/MICROSTRUCTURAL%20INTERPRETATION.pdf
identifier:   Oziegbe, Olubukola and Oziegbe, O.  (2023) MICROSTRUCTURAL INTERPRETATION OF THE GARNET-SILLIMANITE-BEARING GRANITE GNEISS OF IKARE AREA, SOUTHWESTERN NIGERIA.  Ife Journal of Science, 25 (1).  035-044.      
relation: https://www.ajol.info/index.php/ijs/article/view/247322
relation: 10.4314/ijs.v25i1.5