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Ureilite is a rare type of stony meteorite that has a unique mineralogical composition very different from that of other stony meteorites. This dark grey or brownish meteorite type is named after the village Novy Urey ( Cyrillic : Новый Урей ), Mordovia Republic of Russia , where a meteorite of this type fell on 4 September 1886.
Apr 17, 2018 · Ureilite fragments are coarse grained rocks mainly consisting of olivine and pyroxene, originating from the mantle of the ureilite parent body (UPB) 3 that has been disrupted following an impact ...
- Farhang Nabiei, James Badro, James Badro, Teresa Katharina Dennenwaldt, Emad Oveisi, Marco Cantoni, ...
- 2018
Ureilites are a rather enigmatic group of achondrites that in many respects resemble groups of ultramafic rocks from evolved planetary bodies such as the Earth. They consist predominantly of large olivine and pyroxene (most commonly pigeonite) grains that sometimes show a pronounced elongation reflecting a foliated texture.
Dec 18, 2014 · Both within single samples and among samples, these clasts span the same range and distribution of ureilite types (Fo values, with correlated pyroxene type and oxygen isotope composition) as the main group ureilite collection on the whole (Fig. 2). The remainder of the material consists of a few % feldspathic clasts that have been shown by ...
- Cyrena Anne Goodrich, William K. Hartmann, David P. O'Brien, Stuart J. Weidenschilling, Lionel Wilso...
- 2015
Ureilites are carbonaceous ultramafic rocks that represent the second largest group of achondrite meteorites with 40 known specimens ( Table U6 ). Only eucrites (q.v.) are more numerous.
Oct 30, 2022 · A class of calcium-poor achondrite meteorite; also known as olivine–pigeonite achondrites. They consist mainly of millimetre-sized grains of olivine and pigeonite minerals enclosed in a matrix of carbonaceous veins, with some metal also present.
Noun [ edit] ureilite (plural ureilites) An achondrite composed mostly of olivine and clinobronzite with some diamond or graphite . Early inspections of the meteorite revealed it to be a ureilite, an unusual composition that does not match other space rocks known to have come from the moon or Mars.
