Iron meteorites and their weathering products: high velocity resolution Mössbauer spectroscopy of the iron-bearing minerals

Goryunov, M. V.; Yakovlev, G. A.; Чукин, А. В.; Grokhovsky, V. I.; Semionkin, V. A.; Оштрах, М. И.

doi:10.1127/ejm/2016/0028-2545

Cited by 9 publications

(13 citation statements)

References 20 publications

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“…Geometry In the case of Campo del Cielo meteorite, already in transmission geometry the two phases are observed, while in backscattering geometry γ-Fe(Ni, Co) is also found (Sext 3) [34,35]. This result shows that filing the sample for the transmission measurement may have transformed the γ phase into α phase.…”

Section: Meteoritementioning

confidence: 91%

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: Meteoritementioning

confidence: 91%

57Fe Mössbauer Analysis of Meteorites and Tektites

et al. 2021

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“…A comparative study of iron meteorites Anyujskij IIAB, Sikhote-Alin IIAB, Aliskerovo IIIE-an, and Sterlitamak IIIAB was carried out using Mössbauer spectroscopy with a high velocity resolution in [81,82] The comparison of powdered samples of one fragment of Chinga iron-ung, in which visually different areas (1, 2, 3, 4, and 5) of the saw-cut surface were observed, was done using Mössbauer spectroscopy with a high velocity resolution (4096 channels) in [80]. The Mössbauer spectra of these samples obtained from four areas are shown in Figure 31.…”

Section: Iron Meteoritesmentioning

confidence: 99%

Section: Iron Meteoritesmentioning

confidence: 99%

“…However, these spectra were decomposed with different numbers of components; three magnetic sextets were revealed in the spectra of IIAB iron meteorites, while five magnetic sextets and one paramagnetic singlet were revealed in the spectra of IIIE-an and IIIAB iron meteorites. Therefore, the 57 Fe hyperfine parameters for revealed magnetic sextets were assigned in [81,82] Therefore, the 57 Fe hyperfine parameters for revealed magnetic sextets were assigne in [81,82] 50% (sextet 3, α-Fe(Ni, Co) phase), δ = 0.024 mm/s, Heff = 330.7 kOe, A = 11% (sextet 4, α-Fe(Ni, Co) phase), δ = 0.243 mm/s, Heff = 309.1 kOe, A = 2% (sextet 5, γ-Fe(Ni, Co) phase) and δ = 0.128 mm/s, A = 1% (singlet 6, paramagnetic γ-Fe(Ni, Co) phase) for Sterlitamak IIIAB. It should be noted that there is uncertainty in the assignment of Heff in the range 340-350 kOe to α2-Fe(Ni, Co) or α-Fe(Ni, Co) phases.…”

Section: Iron Meteoritesmentioning

confidence: 99%

“…(a A re-examination of Dronino iron-ung meteorite and its weathering (oxidation) products in clay was carried out using Mössbauer spectroscopy with a high velocity resolution in [82][83][84]. The room temperature 2048-channel Mössbauer spectra of powdered Fe-Ni-Co alloy and extracted internal weathering product are shown in Figure 34.…”

Section: Iron Meteoritesmentioning

confidence: 99%

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Applications of Mössbauer Spectroscopy in Meteoritical and Planetary Science, Part II: Differentiated Meteorites, Moon, and Mars

2021

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Mössbauer (nuclear γ-resonance) spectroscopy is a powerful technique that is actively used in various fields, from physics and chemistry to biology and medicine. Rudolf L. Mössbauer, who observed nuclear γ-resonance and published his results in 1958, received a Nobel Prize in physics in 1961 for this discovery. The 57Fe is the most widely used nucleus in Mössbauer spectroscopy. Therefore, a large variety of compounds containing iron can be studied by Mössbauer spectroscopy. It is well known that planetary matter contains various iron-bearing phases and minerals. Therefore, the extraterrestrial material from different meteorites, asteroids, and planets can be studied using 57Fe Mössbauer spectroscopy as additional powerful technique. Two parts of this review consider the results of more than 50 years of experience of Mössbauer spectroscopy applied for the studies of various meteorites, soils, and rocks from the Moon and recent investigation of the Mars surface using two rovers equipped with miniaturized Mössbauer spectrometers. Part I will discuss known results on Mössbauer spectroscopy of undifferentiated meteorites, which are the most primitive and formed with the solar system.

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57Fe hyperfine parameters and phase compositions in Fe-Ni-Co alloys from iron, stony-iron and stony meteorites

Goryunov,

Oshtrakh

2024

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Iron meteorites and their weathering products: high velocity resolution Mössbauer spectroscopy of the iron-bearing minerals

Cited by 9 publications

References 20 publications

57Fe Mössbauer Analysis of Meteorites and Tektites

57Fe Mössbauer Analysis of Meteorites and Tektites

Applications of Mössbauer Spectroscopy in Meteoritical and Planetary Science, Part II: Differentiated Meteorites, Moon, and Mars

57Fe hyperfine parameters and phase compositions in Fe-Ni-Co alloys from iron, stony-iron and stony meteorites

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