Characterization of Northwest Africa 6286 and 7857 ordinary chondrites using X-ray diffraction, magnetization measurements and Mössbauer spectroscopy

Maksimova, A. A.; Оштрах, М. И.; Чукин, А. В.; Felner, I.; Yakovlev, G. A.; Semionkin, V. A.

doi:10.1016/j.saa.2017.10.056

Cited by 21 publications

(39 citation statements)

References 32 publications

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“…; Maksimova et al. ) and from Canberra (Elewa and Cadogan ). The latter group worked on the database of Verma, which was used to construct 2‐D plots.…”

Section: Introductionmentioning

confidence: 99%

“…The idea of Verma was subsequently explored by groups from Ekaterinburg (Oshtrakh et al 2008;Maksimova et al 2018) and from Canberra (Elewa and Cadogan 2017). The latter group worked on the database of Verma, which was used to construct 2-D plots.…”

Section: Introductionmentioning

confidence: 99%

“…In the paper by the Ekaterinburg group from 2008 (Oshtrakh et al 2008), the M€ ossbauer spectra of 11 ordinary chondrites types H and L were measured at room temperature with high-velocity resolution, using 4096 channels. On seven 2-D plots, prepared for various variables, e.g., area of pyroxene versus area of olivine, area of metal or (metal + iron oxide) versus area of (olivine + pyroxene), arbitrary straight lines were included to distinguish various ordinary chondrites of type H from type L. Another M€ ossbauer paper from 2018 (Maksimova et al 2018) showed only one plot related to the classification of meteorites. Meteorites NWA6286 and NWA7857 were in the region belonging to ordinary chondrites type LL.…”

Section: Introductionmentioning

confidence: 99%

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Application of Mössbauer spectroscopy, multidimensional discriminant analysis, and Mahalanobis distance for classification of equilibrated ordinary chondrites

Woźniak

Gałązka-Friedman

Duda

et al. 2019

Meteorit & Planetary Scien

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Mössbauer spectra of equilibrated ordinary chondrites consist of two doublets due to paramagnetic iron present in olivines and pyroxenes and two sextets due to magnetically ordered iron present in metallic phases and troilite. The spectral areas of the different mineralogical phases found by Mössbauer spectroscopy in meteorites are proportional to the number of iron atoms in this mineralogical phase. This property of Mössbauer spectra can be the basis for constructing a method for the classification of ordinary chondrites. This idea was first explored at the Mössbauer Laboratory in Kanpur. This group suggested a qualitative method based on 2‐dimensional plots of Mössbauer spectral areas and thus classified properly some meteorites. We constructed a quantitative method using Mössbauer spectral areas, multidimensional discriminant analysis, and Mahalanobis distance (4M method) to determine the probability of a meteorite to be of type H, L, or LL. Based on 59 Mössbauer spectra, we calculated by the 4M method, Scluster, the level of similarity of the Goronyo meteorite to the clusters. On the plot of ferrosilite versus fayalite, the point representing Goronyo is located on the border between H and L areas. Calculated by the 4M method, the meteorite Goronyo is 32% similar to type H, 75% to type L, and 11% to type LL. Additional mineralogical analyses suggested that the Goronyo meteorite would be classified as type L, although it was originally reported as type H in the Meteoritical Bulletin Database.

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“…; Maksimova et al. ) and from Canberra (Elewa and Cadogan ). The latter group worked on the database of Verma, which was used to construct 2‐D plots.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Application of Mössbauer spectroscopy, multidimensional discriminant analysis, and Mahalanobis distance for classification of equilibrated ordinary chondrites

Woźniak

Gałązka-Friedman

Duda

et al. 2019

Meteorit & Planetary Scien

View full text Add to dashboard Cite

show abstract

“…In the last 20 years several studies on the use of Mössbauer spectroscopy for classification of ordinary chondrites were published [2][3][4][5][6][7][8][9][10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Mӧssbauer spectroscopy as a useful method for distinguishing between real and false meteorites

et al. 2019

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In our paper four Mӧssbauer spectra of ordinary chondrites (previously classified by a classical method based on determining the ratio of ferrosilite (Fs) to fayalite (Fa) with an electron microprobe) are presented and discussed. These are the Mӧssbauer spectra of two ordinary chondrites type H (Pultusk and Grzempach), one ordinary chondrite type L (Hyattville) and one type LL (NWA 6287). These meteorites were compared, using their Mӧssbauer spectra with the following four other samples: a fragment of a rock that fell near Leoncin in Poland (sample No. 1), a fragment of a rock found in the vicinity of Pultusk in Poland (sample No. 2), a meteorite specimen bought on the meteorite exchange (sample No. 3) and a stone object whose decline was observed in Europe (sample No. 4). The spectrum of sample No. 1 is very similar to the spectrum of ordinary chondrite of type LL. This observation was confirmed using 4M method (previously created by us). The spectrum of sample No. 2 differs significantly from the spectrum of sample of the Pultusk meteorite. In the spectrum of sample No. 3, a clear signal from iron-nickel alloy and troilite can be observed. This fact allows us to state that sample No. 3 is a fragment of rock that was created in cosmic conditions. Sample No. 4 has a Mӧssbauer spectrum similar to the spectrum of terrestrial magmatic rocks. This observation does not clearly determine where the examined object comes from. This work demonstrates the usefulness of Mӧssbauer spectroscopy in recognizing samples that are fragments of meteorites.

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“…Additionally, the fusion crust from Chelyabinsk LL5 fragment No 1a and the massive troilite inclusion from the Sikhote-Alin iron meteorite were removed and prepared as a powder for the study. Details of different samples preparation and characterization were described in [9][10][11][12][13][14][15].…”

Section: Methodsmentioning

confidence: 99%

Spinels in Meteorites: Observation Using Mössbauer Spectroscopy

et al. 2019

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In this mini-review, we consider the results of various meteorite studies using Mössbauer spectroscopy with a high velocity resolution in order to reveal the minor spectral components related to spinels such as chromite, hercynite, magnesiochromite, magnesioferrite and daubréelite in bulk meteorite matter or in some extracted phases. Spinels observation in the Mössbauer spectra is supported by characterization of the studied samples by means of optical and scanning electron microscopy, energy dispersive spectroscopy, X-ray diffraction and magnetization measurements. Mössbauer parameters obtained for extraterrestrial spinels are compared with those obtained for terrestrial analogs published in the literature.

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Characterization of Northwest Africa 6286 and 7857 ordinary chondrites using X-ray diffraction, magnetization measurements and Mössbauer spectroscopy

Cited by 21 publications

References 32 publications

Application of Mössbauer spectroscopy, multidimensional discriminant analysis, and Mahalanobis distance for classification of equilibrated ordinary chondrites

Application of Mössbauer spectroscopy, multidimensional discriminant analysis, and Mahalanobis distance for classification of equilibrated ordinary chondrites

Mӧssbauer spectroscopy as a useful method for distinguishing between real and false meteorites

Spinels in Meteorites: Observation Using Mössbauer Spectroscopy

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