Determination of quadrupole splitting for 57Fe in M1 and M2 sites of both olivine and pyroxene in ordinary chondrites using Mössbauer spectroscopy with high velocity resolution

Оштрах, М. И.; Petrova, E. V.; Grokhovsky, V. I.; Semionkin, V. A.

doi:10.1007/s10751-008-9646-4

Cited by 17 publications

(5 citation statements)

References 16 publications

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“…4 ) show an asymmetric quadrupole doublet which can be fitted by using at least three independent spectral components. Comparing the experimental values of isomer shift, IS, and quadrupole splitting, QS (Table 1 ), with those reported in the literature [ 28 – 32 ], it is easy to attribute the two doublets with high intensities (red and blue lines in Fig. 3 ) to Fe 2+ located at M1 and M2 sites, respectively, confirming that also in this case, there is no cationic site preference for the iron ions.…”

Section: Resultssupporting

confidence: 80%

Unveiling redox mechanism at the iron centers in the mechanochemically activated conversion of CO2 in the presence of olivine

et al. 2022

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The transformation of olivine during the conversion of CO2 to light hydrocarbons activated by mechanochemical treatments at different impact frequencies was studied by a combination of several complementary characterization methods including X-ray diffraction, Raman and 57Fe Mössbauer spectroscopy. Several olivine samples were studied as a function of the milling time, indicating the gradual transformation of FeII-containing olivine into new FeIII-containing weathering products including iron oxides, magnesium iron carbonates and silicates. The results presented here complement those of a previous study on the weathering process of olivine promoted by mechanochemical activation, by demonstrating the role of the redox activity of the iron species during the activation process. These additional spectroscopic results allow us to thoroughly understand the complex weathering mechanism and to correlate it with the efficiency of the CO2 conversion and storage properties of mechanochemically activated olivine.

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Section: Resultssupporting

confidence: 80%

Unveiling redox mechanism at the iron centers in the mechanochemically activated conversion of CO2 in the presence of olivine

et al. 2022

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“…The first studies of H and L ordinary chondrites using Mössbauer spectroscopy with a high velocity resolution were done in [75][76][77][78]. These results demonstrated the possibility to distinguish spectral components related to the M1 and M2 sites in olivine and orthopyroxene.…”

Section: H Ordinary Chondritesmentioning

confidence: 90%

“…It should be noted that the authors of [93,94] used the full static Hamiltonian to fit troilite component. Applications of Mössbauer spectroscopy with a high velocity resolution, as mentioned in the previous section, permitted to distinguish spectral components related to the 57 Fe in crystallographically non-equivalent M1 and M2 sites in silicate crystals as well as to the minor iron-bearing phases [75][76][77][78][79][80][81][82][83][84]. The difference between the Mössbauer spectra of L ordinary chondrites Mbale L5/6, Mount Tazerzait L5, and Saratov L4 measured with a low and high velocity resolution can be illustrated in Figure 26.…”

Section: Ordinary Chondritesmentioning

confidence: 98%

Applications of Mössbauer Spectroscopy in Meteoritical and Planetary Science, Part I: Undifferentiated Meteorites

Maksimova

Оштрах

2021

Minerals

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Mössbauer (nuclear γ-resonance) spectroscopy is a powerful technique which 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, got a Nobel Prize in physics in 1961 for this discovery. 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 an 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 a recent investigation of the Martian surface using two rovers equipped with miniaturized Mössbauer spectrometers. Part I considered the results of Mössbauer spectroscopy of undifferentiated meteorites. Part II discusses the results of Mössbauer spectroscopy of differentiated meteorites formed in asteroids and protoplanets due to matter differentiation, as well as Lunar and Martian matter.

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“…4. Based on our previous data for olivine study [4][5][6][11][12][13], we related the component 1 with the larger ǻE Q and S values to 57 Fe in the M1 sites while the component 2 with the smaller ǻE Q and S values was related to 57 Fe in the M2 sites in olivine. The component 3 had parameters which we cannot relate to any impurity.…”

Section: Mössbauer Spectroscopymentioning

confidence: 98%

Study of olivines from Omolon and Seymchan meteorites using X-ray diffraction and Mössbauer spectroscopy with a high velocity resolution

Оштрах¹,

Petrova²,

Grokhovsky³

et al. 2012

AIP Conference Proceedings

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Articles you may be interested inStudy of Chelyabinsk LL5 meteorite fragment with a light lithology and its fusion crust using Mössbauer spectroscopy with a high velocity resolution AIP Conf. Proc. 1622, 24 (2014) Abstract. Study of olivine from Omolon and Seymchan meteorites was performed using X-ray diffraction and Mössbauer spectroscopy with a high velocity resolution. X-ray diffraction patterns were measured at room temperature while Mössbauer spectra were measured at 295 and 90 K. The orthorhombic crystal lattice parameters were evaluated for olivine from Omolon and Seymchan. These parameters appeared to be different for olivines from both meteorites. Mössbauer spectral components related to 57 Fe in crystallographically non-equivalent sites M1 and M2 in both olivines were determined and its Mössbauer hyperfine parameters were evaluated. Some differences in the tendencies of temperature dependence of spectral parameters and small variations of 57 Fe quadrupole splitting in both M1 and M2 sites of olivines from Omolon and Seymchan were found. On the basis of Mössbauer parameters and chemical data, the temperatures of equilibrium cation distribution were evaluated for both olivines.

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Determination of quadrupole splitting for 57Fe in M1 and M2 sites of both olivine and pyroxene in ordinary chondrites using Mössbauer spectroscopy with high velocity resolution

Cited by 17 publications

References 16 publications

Unveiling redox mechanism at the iron centers in the mechanochemically activated conversion of CO2 in the presence of olivine

Unveiling redox mechanism at the iron centers in the mechanochemically activated conversion of CO2 in the presence of olivine

Applications of Mössbauer Spectroscopy in Meteoritical and Planetary Science, Part I: Undifferentiated Meteorites

Study of olivines from Omolon and Seymchan meteorites using X-ray diffraction and Mössbauer spectroscopy with a high velocity resolution

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