Abstract: Clay is a stony or earthy mineral aggregate composed of fine-grained minerals, which are plastic at appropriate water content and hardens up when fired. Clay soils have various mineral groups such as kaolinite, smectites, illites and palygorskite-sepiolite with unique properties for industrial applications. Uses of clay include manufacture of cement, tiles, ceramics, bricks, drilling clays, lead pencils, printing inks and paints. This project determined elemental and mineralogical composition of clays from Githima (00 46’ 40” S, 370 6’ 31”E), Kimathi (00 40’ 0”S, 370 10’ 28”E) and Ithanje (00 36’ 30” S, 370 6’ 46”