Comparison of the iron-bearing crystals and phases from Tamdakht H5 and Annama H5 ordinary chondrites by X-ray diffraction, magnetization measurements and Mössbauer spectroscopy

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985831%3A_____%2F25%3A00635586" target="_blank" >RIV/67985831:_____/25:00635586 - isvavai.cz</a>

Výsledek na webu

<a href="https://onlinelibrary.wiley.com/doi/10.1111/maps.14368" target="_blank" >https://onlinelibrary.wiley.com/doi/10.1111/maps.14368</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1111/maps.14368" target="_blank" >10.1111/maps.14368</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Comparison of the iron-bearing crystals and phases from Tamdakht H5 and Annama H5 ordinary chondrites by X-ray diffraction, magnetization measurements and Mössbauer spectroscopy

Popis výsledku v původním jazyce

The iron-bearing phases and crystals within (i) the bulk interior and the fusion crust from Tamdakht H5 and (ii) the bulk interior from Annama H5 ordinary chondrites were studied by optical microscopy, scanning electron microscopy with energy dispersive spectroscopy, X-ray diffraction (XRD), magnetization measurements, and Mössbauer spectroscopy. The main iron-bearing phases/crystals such as olivine, orthopyroxene, clinopyroxene, troilite, chromite, and hercynite, as well as Fe-Ni-Co alloy with the α2-Fe(Ni, Co), α-Fe(Ni, Co) and γ-Fe(Ni, Co) phases were identified in both meteorites. XRD and Mössbauer spectroscopy showed high contents of Fe-Ni-Co alloy in the bulk interiors from Tamdakht H5 and Annama H5 ordinary chondrites. The fusion crust from Tamdakht H5 contains a new phase of magnesioferrite. A classification scheme for H, L, and LL ordinary chondrites using the relative areas of Mössbauer spectral components was applied to these meteorites’ classification. The ratios of the M1 and M2 site occupations by Fe2+ in olivine and orthopyroxene were determined using XRD and Mössbauer spectroscopy, showing consistent results. The equilibrium cation distribution temperatures for olivine and orthopyroxene in Tamdakht H5 and Annama H5 were determined using XRD and Mössbauer spectroscopy.

Název v anglickém jazyce

Comparison of the iron-bearing crystals and phases from Tamdakht H5 and Annama H5 ordinary chondrites by X-ray diffraction, magnetization measurements and Mössbauer spectroscopy

Popis výsledku anglicky

The iron-bearing phases and crystals within (i) the bulk interior and the fusion crust from Tamdakht H5 and (ii) the bulk interior from Annama H5 ordinary chondrites were studied by optical microscopy, scanning electron microscopy with energy dispersive spectroscopy, X-ray diffraction (XRD), magnetization measurements, and Mössbauer spectroscopy. The main iron-bearing phases/crystals such as olivine, orthopyroxene, clinopyroxene, troilite, chromite, and hercynite, as well as Fe-Ni-Co alloy with the α2-Fe(Ni, Co), α-Fe(Ni, Co) and γ-Fe(Ni, Co) phases were identified in both meteorites. XRD and Mössbauer spectroscopy showed high contents of Fe-Ni-Co alloy in the bulk interiors from Tamdakht H5 and Annama H5 ordinary chondrites. The fusion crust from Tamdakht H5 contains a new phase of magnesioferrite. A classification scheme for H, L, and LL ordinary chondrites using the relative areas of Mössbauer spectral components was applied to these meteorites’ classification. The ratios of the M1 and M2 site occupations by Fe2+ in olivine and orthopyroxene were determined using XRD and Mössbauer spectroscopy, showing consistent results. The equilibrium cation distribution temperatures for olivine and orthopyroxene in Tamdakht H5 and Annama H5 were determined using XRD and Mössbauer spectroscopy.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Meteoritics & Planetary Science

ISSN

1086-9379

e-ISSN

1945-5100

Svazek periodika

60

Číslo periodika v rámci svazku

7

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

25

Strana od-do

1520-1544

Kód UT WoS článku

001493599000001

EID výsledku v databázi Scopus

2-s2.0-105006535098