A Mössbauer Study of Meteorites — A possible Criterion to Identify Meteorites from the same Parent Body?

Forder, Susan D.; Bland, PA; Gałązka-Friedman, J.; Urbanski, Maciej; Gontarz, Z.; Milczarek, Michał; Bakun-Czubarow, N.

doi:10.1007/978-94-010-0281-3_100

Cited by 10 publications

(6 citation statements)

References 1 publication

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“…Two regions marked with dashed lines contained two groups of chondrites which troilite subspectra had the same δ within the experimental error and slightly different H eff . Subspectrum of troilite in Farmington L5 demonstrated the lowest value of H eff in comparison with other chondrites and close to previous data for Farmington L5 (Forder et al 2001). Differences of H eff for troilite in these chondrites may be a result of small concentration or structural variations in FeS.…”

Section: Troilitesupporting

confidence: 81%

A study of ordinary chondrites by Mössbauer spectroscopy with high‐velocity resolution

Оштрах¹,

Petrova²,

Grokhovsky³

et al. 2008

Meteorit & Planetary Scien

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Abstract-An improvement in the velocity resolution and quality of Mössbauer spectra has been applied to a group of ordinary chondrites. This improvement permitted us to carry out a more detailed study of the iron bearing phases in these samples than has previously been possible. Mössbauer spectra of 11 ordinary chondrites of L and H chemical groups were measured using 4096 channels and presented for further analysis in 1024 channels. Subspectra of the metal grains of several chondrites demonstrated the presence of at least two magnetic sextets related to the main Fe(Ni, Co) phases. Moreover, Mössbauer study of extracted metal grains from Tsarev L5 revealed three sextets and one singlet spectral components related to various α-Fe(Ni, Co), α′-Fe(Ni, Co), α 2 -Fe(Ni, Co), and γ-Fe(Ni, Co) phases. Each subspectrum of olivine and pyroxene in Mössbauer spectra of ordinary chondrites was fitted by superposition of two quadrupole doublets related to M1 and M2 sites in minerals for the first time. An analysis of relative areas and Mössbauer hyperfine parameters was performed and some differences for L and H chondrites as well as for M1 and M2 sites were observed. Mössbauer parameters of troilite and oxidized iron were analyzed. In contrast to a previous study with 512-channel spectra, the presence of oxidized iron was found in all chondrites.

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Section: Troilitesupporting

confidence: 81%

A study of ordinary chondrites by Mössbauer spectroscopy with high‐velocity resolution

Оштрах¹,

Petrova²,

Grokhovsky³

et al. 2008

Meteorit & Planetary Scien

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“…It was shown earlier that the Mössbauer spectra of extracted and synthetic troilite cannot be fitted properly by treating the quadrupole interaction as a first-order perturbation (PFO) over the hyperfine magnetic interaction, but consideration of the full Hamiltonian (FH) is required to fit these spectra correctly [11,12]. Similar approach was applied in the study of ordinary chondrites in [13,14]. The relative area of troilite component in the Mössbauer spectra of ordinary chondrites may vary in the range of ∼10-20%, and the fit of Mössbauer spectra of ordinary chondrites using PFO for troilite component lead to some errors indicated by differential spectra (see [8][9][10]15]) and possible misfits of other spectral components.…”

Section: Introductionmentioning

confidence: 89%

Mössbauer parameters of ordinary chondrites influenced by the fit accuracy of the troilite component: an example of Chelyabinsk LL5 meteorite

et al. 2016

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The influence of the fit accuracy of the troilite component in the Mössbauer spectra of ordinary chondrites on the parameters obtained for other spectral components was evaluated using the Mössbauer spectrum of Chelyabinsk LL5 meteorite fragment with light lithology as a typical example. It was shown that with respect to the application of a usual sextet component where quadrupole interaction is taken into account in the first-order perturbation limit, substantial improvement of the spectrum fit can be achieved either by using the full Hamiltonian description of the troilite component or by its formal approximation with the superposition of three symmetric doublet components. Parameter values obtained for the main spectral components related to olivine and pyroxene were not sensitive to the fit of troilite component while parameters of the minor spectral components depended on the way of troilite component fitting.

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“…The largest part of iron (component 2) was in the form of FeS. The Mö ssbauer parameters of this component were the same as those for troilite found in ordinary chondrites [4]. Component 3 had Mö ssbauer parameters which characterized the high spin ferrous compound while component 4 had Mö ssbauer parameters which characterized the high spin ferric compound with very small quadrupole splitting.…”

Section: Resultsmentioning

confidence: 95%

“…Therefore, components 1 and 2 were related to g-Fe 3 O 4 doped with Ni (a-Fe(Ni,Co) in Dronino contained õ7.0 wt% of Ni). Other components (3)(4)(5) were related to ferric hydrous oxides in magnetic and paramagnetic states possibly depending on various sizes of microparticles (see [6,8]). It is well known that Né el temperatures for a-FeOOH is about 400 K, for b-FeOOH about 295 K, for d-FeOOH about 440 K and for (-FeOOH about 570 K [6].…”

Section: Resultsmentioning

confidence: 99%

Mössbauer spectroscopy of iron meteorite Dronino and products of its corrosion

Grokhovsky¹,

Оштрах²,

Milder³

et al. 2006

Hyperfine Interact

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A Mössbauer Study of Meteorites — A possible Criterion to Identify Meteorites from the same Parent Body?

Cited by 10 publications

References 1 publication

A study of ordinary chondrites by Mössbauer spectroscopy with high‐velocity resolution

A study of ordinary chondrites by Mössbauer spectroscopy with high‐velocity resolution

Mössbauer parameters of ordinary chondrites influenced by the fit accuracy of the troilite component: an example of Chelyabinsk LL5 meteorite

Mössbauer spectroscopy of iron meteorite Dronino and products of its corrosion

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