Geological and Physicochemical Study of the Alluvial Clay of the Monoun Plain (West Cameroon) As Raw Materials for Ceramic Product
Clay Science 22, 29–37 (2018) –Paper– GEOLOGICAL AND PHYSICOCHEMICAL STUDY OF THE ALLUVIAL CLAY OF THE MONOUN PLAIN (WEST CAMEROON) AS RAW MATERIALS FOR CERAMIC PRODUCT a a, b Isaac Yannick BOMENI , Armand Sylvain Ludovic WOUATONG *, François NGAPGUE , c d Véronique Kamgang KABEYENE , and Nathalie FAGEL a Department of Earth Sciences, University of Dschang, P.O. Box 67 Dschang Cameroon b Department of Civil Engineering, Fotso Victor Institute of Technology, P.O. Box 134 Bandjoun Cameroon c Department of Earth Science, Higher Teacher Training College, P.O Box 47 Yaoundé Cameroon d Department of Geology, University of Liege, 4000, Liege Belgium (Received August 30, 2017. Accepted March 26, 2018) ABSTRACT This study reports the geological and physicochemical characterization of Monoun plain alluvial clays. The field was profiled using an auger corer in three localities (Njimbet, Bangourain, Ngwenfon). The present results reveal good indices of alluvial clay deposits with thicknesses ranging from 0 to 620 centimeters and are made up of various facies. The clay samples were collected from six representative profiles at different localities and they indicated silty clay texture except NJB1_2 and BGR2_2, i.e., a sandy clay texture. In all sample, quartz, kaolinite, goethite, illite and chlorite are the major minerals, while gibbsite, hematite, anatase, and K-feldspar are the minor minerals. Chemical analysis revealed the silico–aluminous character of samples with various iron products (1%<Fe2O3<14%) and small alkali and alkaline earth oxides (0%<Na2O+K2O+CaO+MgO <3%). The physical parameters of alluvial clays exhibit a wide spread granulometry (gravel: 0.0–6.3%; sand: 19.6–79.5%; silt: 12.4–67.4% and clay: 1.5–49.0%) with relatively high plastic index (11–49%).
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