Mossbauer and X-ray investigation of clay minerals originated from Libya

Fe-57 transmission Mossbauer spectroscopy and X-ray diffractometry were use d to study clay mineral samples originated from two different regions (Um-a rrazm and Alkawasim) of Libya in order to get information about their miner alogical composition to assess their potential for use in the Libyan oil in dustry. In the samples originated from Um-arrazm calcite, akaganeite and no ntronite while in the samples originated from Alkawasim quartz, akaganeite, montmorillonite, kaolinite, illite, mica and hematite were identified with different ratios by using diffraction method. The differences in the phase composition of iron-containing phases of samples from different localities have reflected in the complex Mossbauer spectra at both 300 K and 80 K. Fo r the samples originated from Um-arrazm the Mossbauer parameters of subspec tra were identified as nontronite and akaganeite.