TY - JOUR
T1 - Study of metallic Fe-Ni-Co alloy and stony part isolated from Seymchan meteorite using X-ray diffraction, magnetization measurement and Mössbauer spectroscopy
AU - Oshtrakh, M. I.
AU - Maksimova, A. A.
AU - Goryunov, M. V.
AU - Petrova, E. V.
AU - Felner, I.
AU - Chukin, A. V.
AU - Grokhovsky, V. I.
N1 - Publisher Copyright:
© 2018 Elsevier B.V.
PY - 2018/12/15
Y1 - 2018/12/15
N2 - A detailed study of Fe-Ni-Co alloy and stony part extracted from Seymchan (main group pallasite) meteorite fragment using X-ray diffraction, magnetization measurements, and Mössbauer spectroscopy with a high velocity resolution was carried out. A complex phase composition in Fe-Ni-Co alloy was observed. The Mössbauer spectrum of this alloy was fitted using eight magnetic sextets which were related to α2-Fe(Ni, Co), α-Fe(Ni, Co) and γ-Fe(Ni, Co) phases. The stony part consists of the following iron-bearing phases: olivine, troilite, Ca-rich clinopyroxene, chromite and probably iron-magnesium chromite. Estimations of the Fe2+ partitioning between the M1 and M2 sites in olivine and Ca-rich clinopyroxene were based on X-ray diffraction and Mössbauer data. The distribution coefficients KD and the temperatures of Fe2+ and Mg2+ cations equilibrium distribution Teq in olivine were evaluated using X-ray diffraction data and Mössbauer parameters.
AB - A detailed study of Fe-Ni-Co alloy and stony part extracted from Seymchan (main group pallasite) meteorite fragment using X-ray diffraction, magnetization measurements, and Mössbauer spectroscopy with a high velocity resolution was carried out. A complex phase composition in Fe-Ni-Co alloy was observed. The Mössbauer spectrum of this alloy was fitted using eight magnetic sextets which were related to α2-Fe(Ni, Co), α-Fe(Ni, Co) and γ-Fe(Ni, Co) phases. The stony part consists of the following iron-bearing phases: olivine, troilite, Ca-rich clinopyroxene, chromite and probably iron-magnesium chromite. Estimations of the Fe2+ partitioning between the M1 and M2 sites in olivine and Ca-rich clinopyroxene were based on X-ray diffraction and Mössbauer data. The distribution coefficients KD and the temperatures of Fe2+ and Mg2+ cations equilibrium distribution Teq in olivine were evaluated using X-ray diffraction data and Mössbauer parameters.
KW - Magnetization measurements
KW - Mössbauer spectroscopy
KW - Seymchan main group pallasite
KW - X-ray diffraction
UR - http://www.scopus.com/inward/record.url?scp=85054683271&partnerID=8YFLogxK
U2 - 10.1016/j.molstruc.2018.06.039
DO - 10.1016/j.molstruc.2018.06.039
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AN - SCOPUS:85054683271
SN - 0022-2860
VL - 1174
SP - 112
EP - 121
JO - Journal of Molecular Structure
JF - Journal of Molecular Structure
ER -