Abstract
The decomposed granite soils known locally as "Masado" are regarded as a special type of soils, because the soil grains are relatively unstable under mechanical or chemical actions. The properties of individual soil grains, which are important for the engineering purposes are examined by means of physical, chemical and mineralogical analyses.From the results of these analyses, it is concluded that the specific gravity of feldspar and the content of coloured minerals are the important factors to determine engineering properties of the soils.
