الملخص

Natural Iraqi mineral clays, treated chemically by acids and bases and activated physically, have been investigated using powder x-ray diffraction , x-ray "thermal analysts; mTrarecT Ifpecfra, instrumental analysis. Results indicate that those samples contain a considerable amount of feldspar mineral and have physical and structural properties evaluated their scientific and economic utilization to be applied in fractionation processes as adsorbent to separate Iraqi heavy crude oils into their simple components. Infrared spectra has been applied to study the chemical composition of the separated fractions.