Reclassification of CK chondrites confirmed by elemental analysis and Fe-Mössbauer spectroscopy

Shiro Kubuki; Jun Iwanuma; Kazuhiko Akiyama; Miki Isa; Naoki Shirai; Mitsuru Ebihara; Tetsuaki Nishida

doi:10.1007/s10751-011-0427-0

Reclassification of CK chondrites confirmed by elemental analysis and Fe-Mössbauer spectroscopy

Shiro Kubuki^*, Jun Iwanuma, Kazuhiko Akiyama, Miki Isa, Naoki Shirai, Mitsuru Ebihara, Tetsuaki Nishida

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

Twenty CK chondrites collected in the Antarctica Continent were characterized by inductively-coupled plasma mass spectrometry (ICP-MS), prompt gamma ray analysis (PGA), instrumental neutron activation analysis (INAA), X-ray diffractometry (XRD) and ⁵⁷Fe-Mössbauer spectroscopy. As a result of elemental analysis, it was revealed that 18.2~26.4 mass% of iron was included in the each chondrite. Mössbauer spectrum of LEW86258, classified as a typical CK chondrite, was found to be composed of two paramagnetic doublets and two magnetic sextets. Mössbauer spectra were assigned to the absorption due to forsterite (Mg _1.36Fe _0.64SiO ₄) and magnetite (Fe ₃O ₄), as also confirmed by XRD. XRD study of LAP03834, reclassified from CK to R chondrite, revealed the presence of crystalline phase due to forsterite. These results indicate that LAP03834 and related chondrites, i. e., MET01149, LAP03923 and MAC02453, should be reclassified as R or LL chondrite.

Original language	English
Pages (from-to)	75-78
Number of pages	4
Journal	Hyperfine Interactions
Volume	208
Issue number	1-3
DOIs	https://doi.org/10.1007/s10751-011-0427-0
Publication status	Published - 2012 Mar 1
Externally published	Yes

Keywords

CK Chondrite
Fe-Mössbauer spectroscopy
X-ray diffractometry

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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title = "Reclassification of CK chondrites confirmed by elemental analysis and Fe-M{\"o}ssbauer spectroscopy",

abstract = "Twenty CK chondrites collected in the Antarctica Continent were characterized by inductively-coupled plasma mass spectrometry (ICP-MS), prompt gamma ray analysis (PGA), instrumental neutron activation analysis (INAA), X-ray diffractometry (XRD) and 57Fe-M{\"o}ssbauer spectroscopy. As a result of elemental analysis, it was revealed that 18.2~26.4 mass% of iron was included in the each chondrite. M{\"o}ssbauer spectrum of LEW86258, classified as a typical CK chondrite, was found to be composed of two paramagnetic doublets and two magnetic sextets. M{\"o}ssbauer spectra were assigned to the absorption due to forsterite (Mg 1.36Fe 0.64SiO 4) and magnetite (Fe 3O 4), as also confirmed by XRD. XRD study of LAP03834, reclassified from CK to R chondrite, revealed the presence of crystalline phase due to forsterite. These results indicate that LAP03834 and related chondrites, i. e., MET01149, LAP03923 and MAC02453, should be reclassified as R or LL chondrite.",

keywords = "CK Chondrite, Fe-M{\"o}ssbauer spectroscopy, X-ray diffractometry",

author = "Shiro Kubuki and Jun Iwanuma and Kazuhiko Akiyama and Miki Isa and Naoki Shirai and Mitsuru Ebihara and Tetsuaki Nishida",

year = "2012",

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doi = "10.1007/s10751-011-0427-0",

language = "English",

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T1 - Reclassification of CK chondrites confirmed by elemental analysis and Fe-Mössbauer spectroscopy

AU - Kubuki, Shiro

AU - Iwanuma, Jun

AU - Akiyama, Kazuhiko

AU - Isa, Miki

AU - Shirai, Naoki

AU - Ebihara, Mitsuru

AU - Nishida, Tetsuaki

PY - 2012/3/1

Y1 - 2012/3/1

N2 - Twenty CK chondrites collected in the Antarctica Continent were characterized by inductively-coupled plasma mass spectrometry (ICP-MS), prompt gamma ray analysis (PGA), instrumental neutron activation analysis (INAA), X-ray diffractometry (XRD) and 57Fe-Mössbauer spectroscopy. As a result of elemental analysis, it was revealed that 18.2~26.4 mass% of iron was included in the each chondrite. Mössbauer spectrum of LEW86258, classified as a typical CK chondrite, was found to be composed of two paramagnetic doublets and two magnetic sextets. Mössbauer spectra were assigned to the absorption due to forsterite (Mg 1.36Fe 0.64SiO 4) and magnetite (Fe 3O 4), as also confirmed by XRD. XRD study of LAP03834, reclassified from CK to R chondrite, revealed the presence of crystalline phase due to forsterite. These results indicate that LAP03834 and related chondrites, i. e., MET01149, LAP03923 and MAC02453, should be reclassified as R or LL chondrite.

AB - Twenty CK chondrites collected in the Antarctica Continent were characterized by inductively-coupled plasma mass spectrometry (ICP-MS), prompt gamma ray analysis (PGA), instrumental neutron activation analysis (INAA), X-ray diffractometry (XRD) and 57Fe-Mössbauer spectroscopy. As a result of elemental analysis, it was revealed that 18.2~26.4 mass% of iron was included in the each chondrite. Mössbauer spectrum of LEW86258, classified as a typical CK chondrite, was found to be composed of two paramagnetic doublets and two magnetic sextets. Mössbauer spectra were assigned to the absorption due to forsterite (Mg 1.36Fe 0.64SiO 4) and magnetite (Fe 3O 4), as also confirmed by XRD. XRD study of LAP03834, reclassified from CK to R chondrite, revealed the presence of crystalline phase due to forsterite. These results indicate that LAP03834 and related chondrites, i. e., MET01149, LAP03923 and MAC02453, should be reclassified as R or LL chondrite.

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KW - Fe-Mössbauer spectroscopy

KW - X-ray diffractometry

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Reclassification of CK chondrites confirmed by elemental analysis and Fe-Mössbauer spectroscopy

Abstract

Keywords

ASJC Scopus subject areas

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