INVESTIGATION BY ~(57)Fe-MOESSBAUER SPECTROSCOPY OF SOME PYRITE SAMPLES EXTRACTED FROM DIFFERENT ROMANIAN NATURAL DEPOSITS

摘要

Extracted pyrites, from four Romanian geological deposits, have been investigated by Mossbauer spectroscopy. The room temperature results of this investigation have been correlated with the data of sulfur isotope ratio and minor elements analysis of pyrite samples. The presence of three signals is identified in the Mossbauer spectra. They correspond to the two crystalline structure of FeS_2 and the third is proposed to assume to the one of components of the iron-sulfur-arsenic series of investigated minerals.