Revealing of the minor iron-bearing phases in the Mössbauer spectra of Chelyabinsk LL5 ordinary chondrite fragments

A detailed analysis of two fragments of Chelyabinsk LL5 ordinary chondrite using scanning electron microscopy with energy dispersion spectroscopy, X-ray diffraction and 57Fe Mossbauer spectroscopy with a high velocity resolution was carried out. Chemical analysis demonstrated the presence of the minor iron-bearing phases such as chromite, hercynite, ilmenite, α-Fe(Ni, Co), α2-Fe(Ni, Co), γ-Fe(Ni, Co) in addition to the main iron-bearing phases (olivine, orthopyroxene and troilite). These minor components were also revealed in the XRD and Mossbauer spectra of the two fragments of Chelyabinsk LL5 meteorite.

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