Obrike, Stephen E.Osadebe, C.C.Onyeobi, T.U.S.2023-12-142023-12-142007-01-09Obrike, S.E. et al. (2007) Mineralogical, geochemical, physical and industrial characteristics of shale from Okada area, southwestern Nigeriahttps://keffi.nsuk.edu.ng/handle/20.500.14448/5631'•؛:neralogical, geochemical and physical characteristics of the shale from Okada, southwestern Nigeria, were determined to evaluate its industrial potential. The x-ray analysis of the shale shows prominent quartz, kaolinite and mixed layer peaks. The result of the chemical analysis shows the predominance of SiOj (55,71% to 55.84%) and Al o (20.58% to 20.70%) with silica/ alumina ratio of 2.71. This clearly defines the shale as alumino-silicates. The other significant chemical impurities m the clay- shale arc 0,70) ه ع%), TiO, (1.15%) and N aO (2.0%). Mineralogical and chemical compositions suggest that the deposit could be exploited for ceramic, pottery and refractory industries. A small amount of montmorillonite in the clay results in high plasticity (74% - 85%) and shrinkage limit (8.30 - 8.70%) as well as low vitrification. The shلا e is also characterized by high loss on Ignition (16.8%).enArticle