Characterization Of Clay Samples Separated From Subsurface Alluvial Soils Of Tinsukia And Jorhat Districts, Assam, India

Abstract

It has been observed from chemical analysis of the clay samples separated from sub-surface alluvial soils of Tinsukia and Jorhat districts of Assam that the percentage of major constituents like silica, alumina and iron were in the range of 40.50-53.03, 23.41-32.34 and 4.62-14.24 respectively. X-ray diffraction pattern of the clay samples confirmed the presence of different minerals along with the impurities. The major minerals found are kaolinite, halloysite and mixed kaolinite-halloysite minerals. The impurities found in the clay samples are quartz, calcite, goethite, siderite, hematite and pyrite.