Results 61 to 70 of about 12,511 (212)

Chondrule size and related physical properties: a compilation and evaluation of current data across all meteorite groups

open access: yes, 2014
The examination of the physical properties of chondrules has generally received less emphasis than other properties of meteorites such as their mineralogy, petrology, and chemical and isotopic compositions.
Biltz, Alison E.   +7 more
core   +1 more source

Experimental constraints on the origin of metal and carbon in ureilite meteorites

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract Ureilites are carbon‐rich ultramafic achondrites that display unique textures, including strips of metal and carbon phases situated along grain boundaries and in fractures. Shock metamorphism observed in ureilites suggests an episode of brittle deformation caused by impact disruption of their parent body.
Nicolas P. Walte   +2 more
wiley   +1 more source

Chromite in main group pallasite meteorites: Accessory mineral tracing planetesimal differentiation

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract Main group pallasite meteorites (PMG) are samples of an early, highly differentiated magmatic planetesimal dominated by olivine and metal‐sulfide‐phosphide assemblages with accessory chromite among other phases. This mineralogy reflects mantle‐ and core‐related reservoirs, but the relative contributions of each and the overall petrogenesis are
Seann J. McKibbin   +6 more
wiley   +1 more source

Clay minerals and other hydrous alteration products in the Kaba meteorite: Review of the literature and new XRD investigations

open access: yesOpen Astronomy, 2023
The present study is a review of publications regarding special aspects of the mineralogy of the Kaba meteorite, clay minerals, hydrous phases, and organic matter.
Viczián István, Kristály Ferenc
doaj   +1 more source

Hydrogen-bearing phases in carbonaceous (and other) chondrites [PDF]

open access: gold, 2023
Thomas Rigaudier   +3 more
openalex   +1 more source

Infrared diffuse reflectance spectra of several thermallymetamorphosed carbonaceous chondrites [PDF]

open access: yes, 1992
Infrared diffuse reflectance spectra (2.53-25μm) were measured for several Antarctic carbonaceous chondrites. Thermally metamorphosed carbonaceous chondrites with CI-CM affinities (Belgica (B)-7904,Yamato (Y)-793321,Y-82162,and Y-86720), which were ...
Masamichi Miyamoto
core   +1 more source

Ground-based Characterization of Hayabusa2 Mission Target Asteroid 162173 Ryugu: Constraining Mineralogical Composition in Preparation for Spacecraft Operations

open access: yes, 2017
Asteroids that are targets of spacecraft missions are interesting because they present us with an opportunity to validate ground-based spectral observations. One such object is near-Earth asteroid (NEA) (162173) Ryugu, which is the target of the Japanese
Becker, Kris J.   +9 more
core   +1 more source

Parent body thermal metamorphism of enstatite chondrites: Disentangling the effects of shock melting

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract Enstatite chondrites (ECs) formed on at least two parent bodies, EH and EL. After the accretion of the EC parent bodies, EC material was subjected to varying degrees of parent body thermal metamorphism (measured by petrologic types 3–6), due to heat released by radioactive isotope decay.
Peter Mc Ardle   +9 more
wiley   +1 more source

Mineralogical Characterization and Phase Angle Study of Two Binary Near-Earth Asteroids, Potential Targets for NASA’s Janus Mission

open access: yesThe Planetary Science Journal, 2023
Ground-based characterization of spacecraft targets prior to mission operations is critical to properly plan and execute measurements. Understanding surface properties, such as mineralogical composition and phase curves (expected brightness at different ...
Lucille Le Corre   +7 more
doaj   +1 more source

JAXA curation for Bennu samples returned by the NASA's OSIRIS‐REx mission

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract NASA's OSIRIS‐REx mission successfully collected and returned ~121.6 g of bulk samples from the B‐type, near‐Earth asteroid (101955) Bennu to Earth in September 2023. Upon returning to Earth, the samples were transported to the NASA Johnson Space Center where most of the samples have been stored and processed.
Rui Tahara   +34 more
wiley   +1 more source

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