Ararki (L5) chondrite: The first meteorite find in Thar Desert of India

Bhandari, N.; Murty, S. V. S.; Shukla, P. N.; Mahajan, R. R.; Shukla, A. D.; Lashkari, G.; Sisodia, M. S.; Tripathi, R. P.; Parthasarathy, G.; Verma, H. C.; Franchi, I. A.

doi:10.1111/j.1945-5100.2008.tb00683.x

Cited by 20 publications

(4 citation statements)

References 20 publications

(22 reference statements)

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“…The authors of [89] found two sextets assigned to kamacite and tetrataenite in the spectrum of the metal separate from Lavras do Sul L5, as well as revealed an additional singlet peak related to the paramagnetic γ-Fe(Ni, Co) phase (a brief discussion about questionable term "antitaenite" see above in Section 6.1). An unusual result was obtained in the study of Ararki L5 ordinary chondrite in [90]. The Mössbauer spectrum of this meteorite is shown in Figure 24a.…”

Section: Ordinary Chondritesmentioning

confidence: 70%

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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Section: Ordinary Chondritesmentioning

confidence: 70%

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

Maksimova

Оштрах

2021

Minerals

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“…Figure 1 shows a schematic view of the shielding design which was optimized based on background simulations carried out with Geant4 (v9.6p03) [14]. The detector is housed in a large-volume sample cavity of 24 × 24 × 35 cm 3 . From inside to outside the shielding consists of 8 cm of oxygen free copper (Cu-OFE, >99.99% purity), 5 cm of low-activity Pb (7.2±0.5 Bq/kg from 210 Pb) and 15 cm of standard Pb (91±14 Bq/kg 2016 JINST 11 P12017 from 210 Pb).…”

Section: Detector Descriptionmentioning

confidence: 99%

“…Low-background γ-ray spectrometry is a widely used tool to select the very radiopure materials needed for rare event searches in astroparticle physics, e.g., the search for dark matter or neutrinoless double beta decay [1,2]. In a different field, namely meteorite research, γ-ray spectrometry can be used to determine the terrestrial age of meteorite samples by detecting cosmogenic isotopes [3][4][5]. GeMSE (Germanium Material and meteorite Screening Experiment) [6] is an interdisciplinary project addressing both of these topics.…”

Section: Introductionmentioning

confidence: 99%

The GeMSE facility for low-background γ-ray spectrometry

et al. 2016

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We describe a new high-purity germanium (HPGe) detector setup for low-background γ-ray spectrometry. The GeMSE facility (Germanium Material and meteorite Screening Experiment) is dedicated to material screening for rare event searches in astroparticle physics as well as to the characterization of meteorites. It is installed in a medium depth (∼620 m.w.e.) underground laboratory in Switzerland in a multi-layer shielding and is equipped with an active muon veto. We have reached a very competitive integral background rate of (246 ± 2) counts/day (100-2700 keV) and measured a sensitivity of ∼0.5-0.6 mBq/kg for long-lived isotopes from the 238 U/ 232 Th chains in a ∼1 kg sample screened for ∼27 days. An extrapolation to higher sample masses and measurement times suggests a maximum sensitivity in the O(50) µBq/kg range. We describe the data analysis based on Bayesian statistics, background simulations, the efficiency calibration and first sample measurements.

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“…Powdered meteorite sample was analyzed for the whole rock chemical composition by X-ray fluorescence was estimated on powdered samples using (Bhandari et al, 2005(Bhandari et al, , 2008(Bhandari et al, , 2009. The precision and accuracy of the data is ±2%, and average values of three replicates were taken for each determination.…”

Section: Methodsmentioning

confidence: 99%

Spectroscopy and Mineralogy of a New Meteorite Kamargaon (L6) Chondrite

Saikia¹,

Parthasarathy

Borah³

et al. 2017

Proceedings of the Indian National Science Academy

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We report spectroscopic, bulk, trace element and mineralogical composition of a fresh meteorite fall at Bali-Chapori village, near Kamargaon Town, Assam, India (26°37′56″.99 N; 93°46′ 11″.51 E) on November 13 th , 2015. The whole rock analyses and the composition of olivine and pyroxene indicate that the meteorite is an ordinary chondrite belonging to the group L6. The spectroscopic (Raman, FTIR, XRD) and petrographical (HR-ICP-MS, EPMA, XRF) studies reveal that the major constituents of the meteorite is olivine [(Mg, Fe) 2 SiO 4 ], pyroxene, and metal.

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Ararki (L5) chondrite: The first meteorite find in Thar Desert of India

Cited by 20 publications

References 20 publications

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

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

The GeMSE facility for low-background γ-ray spectrometry

Spectroscopy and Mineralogy of a New Meteorite Kamargaon (L6) Chondrite

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