Mössbauer spectroscopic study of meteorites recovered on Antarctica

Kazutoyo Endo, Rieko Hirunuma, Taeko Shinonaga, Mitsuru Ebihara, Hiromichi Nakahara

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The chemical states of iron in sixteen Antarctic meteorites belonging to H-group chondrites were studied by means of Mössbauer spectroscopy. An Fe-Ni alloy, troilite, paramagnetic Fe(III), and two kinds of paramagnetic Fe(II) were observed in each meteorite. The Mössbauer parameters indicated that the Fe(II) components can be assigned to olivine and some pyroxenes. The relative area intensities of Fe(III) in the chondrites correlated positively with iodine content, which was determined by radiochemical neutron activation analysis, and those of two Fe(II)-species correlated negatively with the content. On the basis of the data on the halogen and the Mössbauer spectrocopy, the terrestrial contamination on Antarctic meteorites is discussed.

Original languageEnglish
Pages (from-to)557-561
Number of pages5
JournalHyperfine Interactions
Volume91
Issue number1
DOIs
Publication statusPublished - 1994 Dec 1

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Nuclear and High Energy Physics
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

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