Study of iron meteorite Sikhote–Alin and extracted iron–nickel phosphides using Mössbauer spectroscopy with high velocity resolution

Оштрах, М. И.; Larionov, M. Yu.; Grokhovsky, V. I.; Semionkin, V. A.

doi:10.1007/s10751-008-9855-x

Cited by 13 publications

(12 citation statements)

References 7 publications

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“…Mössbauer spectroscopy (Figure 16) shows that the main element, Fe (39%), is only related to the abundance of maghemite and troilite. The RT spectrum is similar to that obtained for schreibersite pieces of Sikhote-Alin iron meteorite [40][41][42][43] but, in fact, in our case it shows superparamagnetic behavior with iron in trivalent coordination, as indicated in Table 5, and splits at 4.2 K. Most of the 4.2 K spectrum was fitted with the two sextets of maghemite expected at this temperature (see for instance [44]), plus a very small amount (1.1%) of troilite (FeS). Troilite was fitted with only one sextet, as explained in other works [45], instead of an octet.…”

Section: Stony Meteoritesupporting

confidence: 76%

57Fe Mössbauer Analysis of Meteorites and Tektites

et al. 2021

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This review presents studies on iron meteorites (Campo del Cielo fall and an unregistered iron meteorite), an unregistered stony meteorite from Northwest Africa, and 13 tektites from the American, European, and Australasian strewn fields. The main experimental technique used in the studies was Mössbauer spectroscopy, both in transmission and backscattering geometries. For the latter, a MIMOS II spectrometer was used. Additionally, optical and scanning electron microscopies and X-ray diffraction were used. In the studied iron meteorites, kamacite is found as the main mineral. Campo del Cielo meteorite exhibits Widmanstätten patterns and schreibersite inclusions. The unregistered iron meteorite has Neumann lines and schreibersite inclusions. We have assigned Campo del Cielo as an octahedrite and the unregistered iron meteorite as a hexahedrite. The unregistered stony meteorite is composed mainly of iron-free silicates; at 4.2 K, the spectrum indicates maghemite and 1% troilite. The Cambodian tektite appeared individualized from other australasites, unlike the moldavite, which tends to cluster with them. Our analyses do not allow dismissing doubts on the provenance of tibetanites. The Fe3+/Fe2+ ratio was found to be higher for Muong Nong-type tektites than for splash-form tektites, as expected from their morphology and solidification from melt at lower temperature.

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Section: Stony Meteoritesupporting

confidence: 76%

57Fe Mössbauer Analysis of Meteorites and Tektites

et al. 2021

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“…4. The room temperature spectrum of rhabdite microcrystals demonstrated superparamagnetic behavior (earlier we evaluated the Curie temperature for rhabdite by magnetization measurements of about 345 K [9]). It was better fitted using three magnetic sextets and one paramagnetic doublet.…”

Section: Resultsmentioning

confidence: 99%

“…Recently Mössbauer spectroscopy with a high velocity resolution demonstrated new possibilities in the study of various iron bearing phases in meteorites [4][5][6][7][8]. Our previous study of iron nickel phosphides demonstrated superparamagnetic Mössbauer spectrum of rhabdite at room temperature [9]. In this work we present new preliminary results of the study of iron nickel phosphide microcrystals extracted from Sikhote-Alin iron meteorite using Mössbauer…”

Section: Introductionmentioning

confidence: 90%

Temperature dependent high velocity resolution Mössbauer spectroscopic study of iron nickel phosphide microcrystals (rhabdites) extracted from Sikhote-Alin iron meteorite

Оштрах

Larionov

Grokhovsky

et al. 2011

Journal of Alloys and Compounds

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“…These phases were identified based on well‐known properties such as isomer shift, hyperfine splitting, and quadrupole splitting used previously by Oshtrakh et al. () and Dos Santos et al. ().…”

Section: Experimental Methodsmentioning

confidence: 99%

A high spatial resolution synchrotron Mössbauer study of the Tazewell IIICD and Esquel pallasite meteorites

Blukis

Rüffer

Chumakov

et al. 2017

Meteorit & Planetary Scien

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Metallic phases in the Tazewell IIICD iron and Esquel pallasite meteorites were examined using 57Fe synchrotron Mössbauer spectroscopy. Spatial resolution of ~10–20 μm was achieved, together with high throughput, enabling individual spectra to be recorded in less than 1 h. Spectra were recorded every 5–10 μm, allowing phase fractions and hyperfine parameters to be traced along transects of key microstructural features. The main focus of the study was the transitional region between kamacite and plessite, known as the “cloudy zone.” Results confirm the presence of tetrataenite and antitaenite in the cloudy zone as its only components. However, both phases were also found in plessite, indicating that antitaenite is not restricted exclusively to the cloudy zone, as previously thought. The confirmation of paramagnetic antitaenite as the matrix phase of the cloudy zone contrasts with recent observations of a ferromagnetic matrix phase using X‐ray photoemission electron spectroscopy. Possible explanations for the different results seen using these techniques are proposed.

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Study of iron meteorite Sikhote–Alin and extracted iron–nickel phosphides using Mössbauer spectroscopy with high velocity resolution

Cited by 13 publications

References 7 publications

57Fe Mössbauer Analysis of Meteorites and Tektites

57Fe Mössbauer Analysis of Meteorites and Tektites

Temperature dependent high velocity resolution Mössbauer spectroscopic study of iron nickel phosphide microcrystals (rhabdites) extracted from Sikhote-Alin iron meteorite

A high spatial resolution synchrotron Mössbauer study of the Tazewell IIICD and Esquel pallasite meteorites

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