Results 1 to 10 of about 1,765 (166)

Peculiarities of the composition and genesis of the Brahin meteorite

open access: yesУчёные записки Казанского университета: Серия Естественные науки, 2018
A polished plate of the Brahin meteorite from the collection of the Geological Museum of the Institute of Geology and Petroleum Technologies of Kazan Federal University has been studied with the use of microprobe analysis.
A.I. Bakhtin   +4 more
doaj  

CO Self-Shielding as a Mechanism to Make 16O-Enriched Solids in the Solar Nebula

open access: yesChallenges, 2014
Photochemical self-shielding of CO has been proposed as a mechanism to produce solids observed in the modern, 16O-depleted solar system. This is distinct from the relatively 16O-enriched composition of the solar nebula, as demonstrated by the oxygen ...
Joseph A. Nuth, III   +2 more
doaj   +1 more source

The Magnesium Isotope Composition of Samples Returned from Asteroid Ryugu

open access: yesThe Astrophysical Journal Letters, 2023
The nucleosynthetic isotope composition of planetary materials provides a record of the heterogeneous distribution of stardust within the early solar system.
Martin Bizzarro   +89 more
doaj   +1 more source

REVISED RARE EARTH ELEMENTS COMPOSITION OF MOCS METEORITE USING HR-ICP-MS AND ICP-QMS ANALYSIS

open access: yesStudia Universitatis Babes-Bolyai Chemia, 2016
Rare earth elements composition of Mocs meteorite was analyzed using two inductively coupled plasma mass spectrometry methods: a quadrupole and a single-detector sector-field high-resolution instrument.
Claudiu TANASELIA   +4 more
doaj  

Grain Size Effects on Visible and Near-infrared (0.35–2.5 μm) Laboratory Spectra of Ordinary Chondrite and HED Meteorites

open access: yesThe Planetary Science Journal, 2023
Remote spectral characterization of near-Earth asteroids (NEAs) relies on laboratory spectral calibration to constrain their surface composition, including mineral chemistry and relative mineral abundances.
Bryn Bowen   +10 more
doaj   +1 more source

Meteorite Jesenice: Mineral and chemical composition of the fusion crust of ordinary chondrite

open access: yesGeologija, 2010
The composition of the well-preserved fusion crust of the meteorite Jesenice was characterised by means ofoptical and scanning electron microscopy (SEM). The SEM investigations revealed three structurally distinct layerswithin the crust.
Alenka Lenart   +3 more
doaj  

Classification of stony meteorites and chondrules – the case of meteorite Jesenice

open access: yesGeologija, 2012
In the first part of the paper there is a description about genesis of meteorites, in particularly about stony meteorites– chondrites, since meteorite Jesenice is an ordinary L chondrite. Chondrules represent main part of the mass ofchondritic meteorites.
Bojan Ambrožič   +3 more
doaj  

FORMATION AND RESEARCH OF MULTI-LAYER COMPOSITE PLASMA OXIDE COATINGS BASED ON ELEMENTS OF SCREEN METEROID PTOTECTION

open access: yesНаука и техника, 2016
The paper presents results of research for influence of plasma jet parameters (current, spraying distance, plasmasupporting nitrogen gas consumption), fractional composition of an initial powder and cooling degree by compressed air on characteristics of ...
V. A. Okovity   +8 more
doaj   +1 more source

Characterisation of presumed meteorite from Trbovlje

open access: yesGeologija, 2011
The main objective of this study was to identify and characterise a specimen of presumed meteorite, supposedly found in 1947 while crushing gangue material from an open-pit coal mining site in Trbovlje.
Miloš Miler   +2 more
doaj  

The use of SEM/EDS method in mineralogical analysis of ordinary chondritic meteorite

open access: yesGeologija, 2009
The aim of this study was to evaluate the potential of scanning electron microscopy coupled with energy dispersiveX-ray spectroscopy (SEM/EDS) for determination of mineral phases according to their stoichiometry and assessment of mineral composition of ...
Breda Mirtič, Urša Curk, Miloš Miler
doaj  

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