Comparison of iron-bearing minerals in ordinary chondrites from H, L and LL groups using Mössbauer spectroscopy with a high velocity resolution

A A Maksimova; M I Oshtrakh; E V Petrova; V I Grokhovsky; V A Semionkin

doi:10.1016/j.saa.2016.04.032

Comparison of iron-bearing minerals in ordinary chondrites from H, L and LL groups using Mössbauer spectroscopy with a high velocity resolution

Spectrochim Acta A Mol Biomol Spectrosc. 2017 Feb 5:172:65-76. doi: 10.1016/j.saa.2016.04.032. Epub 2016 Apr 12.

Authors

A A Maksimova¹, M I Oshtrakh², E V Petrova³, V I Grokhovsky³, V A Semionkin⁴

Affiliations

¹ Department of Physical Techniques and Devices for Quality Control, Institute of Physics and Technology, Ural Federal University, Ekaterinburg 620002, Russian Federation. Electronic address: alia55@bk.ru.
² Department of Physical Techniques and Devices for Quality Control, Institute of Physics and Technology, Ural Federal University, Ekaterinburg 620002, Russian Federation; Department of Experimental Physics, Institute of Physics and Technology, Ural Federal University, Ekaterinburg 620002, Russian Federation. Electronic address: oshtrakh@gmail.com.
³ Department of Physical Techniques and Devices for Quality Control, Institute of Physics and Technology, Ural Federal University, Ekaterinburg 620002, Russian Federation.
⁴ Department of Physical Techniques and Devices for Quality Control, Institute of Physics and Technology, Ural Federal University, Ekaterinburg 620002, Russian Federation; Department of Experimental Physics, Institute of Physics and Technology, Ural Federal University, Ekaterinburg 620002, Russian Federation.

PMID: 27117707
DOI: 10.1016/j.saa.2016.04.032

Abstract

Ordinary chondrites from H, L and LL groups were studied using Mössbauer spectroscopy with a high velocity resolution. Mössbauer parameters of spectral components were obtained using new fitting model excluding the effect of previous misfits of troilite component. Obtained parameters were related to corresponding iron-bearing minerals in ordinary chondrites. The differences of these minerals content as well as small differences in the hyperfine parameters of the same iron-bearing minerals were revealed for different meteorites. The temperatures of equilibrium cations distribution in silicates were estimated and suitable parameters for classification of H, L and LL chondrites were supposed using Mössbauer parameters.

Keywords: (57)Fe Mössbauer spectroscopy; Hyperfine interactions; Microcrystals of iron-bearing minerals; Ordinary chondrites.