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Volume 8, Issue 1, February 2019, Page: 45-59
Geophagic Clayey Materials of Sabga Locality (North West Cameroon): Genesis and Medical Interest
Elvis Duplex Kenne Kalguem, Department of Earth Sciences, Faculty of Sciences, University of Dschang, Dschang, Cameroon
Armand Sylvain Ludovic Wouatong, Department of Earth Sciences, Faculty of Sciences, University of Dschang, Dschang, Cameroon
Daniel Njopwouo, Department of Inorganic Chemistry, Faculty of Sciences, University of Yaoundé I, Yaoundé, Cameroon
Christel Sobdjou Kemteu, Laboratoire de Traitement Des Minerais, Institut De Recherches Géologiques Et Minières, Yaoundé, Cameroon
Georges Ivo Ekosse, Directorate of Research and Innovation, University of Venda, Thohoyandou, South Africa
Received: Jan. 10, 2019;       Accepted: Feb. 14, 2019;       Published: Mar. 6, 2019
DOI: 10.11648/      View  861      Downloads  134
Geophagia, the deliberate ingestion of clayey materials, is a complex eating behaviour with obscure etiology and numerous health/medical problems. Geological, mineralogical and geochemical studies were carried out on Sabga geophagic clayey materials located within a trachyte Bamenda mountain, about 16 km east of Bamenda town (North West Cameroon), in order to define the genesis, and its medical interest. Four (04) samples were characterized by different techniques: description of outcrops and pits, particle size distribution by laser dispersion, X-ray diffraction, Fourier transform infrared spectrometry, Scanning electron microscopy and bulk chemical analyses. The main clay minerals were smectite (49-60%) and kaolinite (4-6%). The other major minerals are quartz (19-34%), feldspar (6-12%), goethite (3-6%), and hematite (1-3%). The average particle diameter varied from 2 to 9 μm. Results from the different analytical techniques point out a meteoric weathering of feldspar as petrogenetic origin of geophagic clayey materials. Smectite and kaolinite, which are the main desirable minerals components of the geophagic clayey materials, were geochemically derived from surrounding trachytes. However the presence of crystalline silica (quartz) up to 2% limits the application of some Sabga geophagic clayey materials for pharmaceutical clays. The high radioactive (Th, U), carcinogenic (Cr, Cu, Pb, Ni) and teratogenic (or birth defects) (Cu, Zn, Pb) elements contents in some Sabga geophagic clayey materials implied some pretreatment.
Geophagic Clayey Materials, Meteoric Weathering, Sabga, Trachyte
To cite this article
Elvis Duplex Kenne Kalguem, Armand Sylvain Ludovic Wouatong, Daniel Njopwouo, Christel Sobdjou Kemteu, Georges Ivo Ekosse, Geophagic Clayey Materials of Sabga Locality (North West Cameroon): Genesis and Medical Interest, Earth Sciences. Vol. 8, No. 1, 2019, pp. 45-59. doi: 10.11648/
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