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Aubrite
— Group —
Cumberland Falls, an aubrite
Type
Achondrite
Class
Asteroidal achondrite or enstatite achondrite
Parent body
Possibly (3103) Eger
Shallowater meteorite, an aubrite
Aubrites are a group of meteorites named for Aubres,[1] a small achondrite meteorite that fell in 1836 in Aubres near Nyons, France. They are primarily composed of the orthopyroxene enstatite and are often called enstatite achondrites. Their igneous origin separates them from primitive enstatite achondrites and means they originated in an asteroid.
Aubrites are typically light-colored with a brownish fusion crust. Most aubrites are heavily brecciated; they are often said to look "lunar" in origin.
Aubrites are primarily composed of large white crystals of the Fe-poor, Mg-rich orthopyroxene, or enstatite, with minor phases of olivine, nickel-iron metal, and troilite, indicating a magmatic formation under extremely reducing conditions. The severe brecciation of most aubrites attests to a violent history for their parent body. Since some aubrites contain chondritic xenoliths, it is likely that the aubrite parent body collided with an asteroid of "F-chondritic" composition.
Comparisons of aubrite spectra to the spectra of asteroids have revealed striking similarities between the aubrite group and the E-type asteroids of the Nysa family. A small near-Earth object, 3103 Eger, is also often suggested as the parent body of the aubrites.[2]
It has been suggested that aubrites may originate from the planet Mercury.[1][3]
^ abO'Callaghan, Jonathan (10 February 2024). "Fragments of Asteroid With Mystery Origin Are Found Outside Berlin - Astronomers tracked the entry of a small space rock into Earth's atmosphere, and then meteorite hunters made an unexpected discovery". The New York Times. Archived from the original on 10 February 2024. Retrieved 10 February 2024.
^Gaffey, Michael J.; Reed, Kevin L.; Kelley, Michael S. (November 1992). "Relationship of E-type Apollo asteroid 3103 (1982 BB) to the enstatite achondrite meteorites and the Hungaria asteroids". Icarus. 100 (1): 95–109. Bibcode:1992Icar..100...95G. doi:10.1016/0019-1035(92)90021-X. Retrieved 14 May 2021.
^O'Callaghan, Jonathan (23 May 2022). "Shards of the Planet Mercury May Be Hiding on Earth". The New York Times. Retrieved 14 February 2023.
Aubrites are a group of meteorites named for Aubres, a small achondrite meteorite that fell in 1836 in Aubres near Nyons, France. They are primarily composed...
days after it entered the Earth's atmosphere. It was later found to be an aubrite, a rare group of meteorites. Impact event Asteroid impact prediction 2023...
letters of the three subgroups: Howardites Eucrites Diogenites Angrites Aubrites Lunar meteorites are meteorites that originated from the Moon. Martian...
asteroid from the asteroid belt and one of the likely parent bodies of the aubrites. 3819 Robinson – an asteroid from the asteroid belt and one of the likely...
achondrites) Howardite group Eucrite group Diogenite group Angrite group Aubrite group (enstatite achondrites) Ureilite group Brachinite group Lunar meteorite...
et al. (2021-12-29). "Perryite, (Ni,Fe)16PSi5, from the Mount Egerton aubrite: the first natural P-Si-ordered phosphide-silicide". Journal of Geosciences...
be a genetic connection between 434 Hungaria and 3103 Eger and the aubrites. Aubrite E-type asteroid Hungaria family 1025 Riema 1103 Sequoia 1453 Fennia...
Eucrite, and Diogenite meteorites, while 3103 Eger is the parent body for Aubrite meteorites. In this characteristic 3103 Eger is related spectroscopically...
obtained during a 1977 study. It has a cross-sectional size of 66.7 km. Aubrite 3103 Eger 2867 Šteins "Pandora". Oxford English Dictionary (Online ed.)...
diameter and orbits 245 km from Roxane, completing one orbit every 13 days. Aubrite E-type asteroid "317 Roxane". JPL Small-Body Database. NASA/Jet Propulsion...
June 1998 Turkmenistan Tashauz H5 Norton County 1.1 18 February 1948 United States Kansas Aubrite Chelyabinsk 1 15 February 2013 Russia Chelyabinsk LL5...
impactors of the Late Heavy Bombardment.[citation needed] E-type asteroid Aubrite 434 Hungaria 1025 Riema 1103 Sequoia 1453 Fennia 1750 Eckert 7187 Isobe...
two unusual extraterrestrial igneous systems: The enstatite achondrite (aubrite) meteorites and the lunar ferroan anorthosites. She entered the doctoral...
the Earth. Observations suggest its surface composition is similar to Aubrite meteorites, a rare class of high-albedo differentiated meteorites. The...
"Studies of kamacite, perryite and schreibersite in E-chondrites and aubrites". Meteoritics. 21 (1): 79–93. Bibcode:1986Metic..21...79E. doi:10.1111/j...
asteroid is classified as E-type, so it could be potentially associated with aubrite meteorites (enstatite achondrites). Although the discoverer is given the...
Klaus Keil - Explosive Eruptions on Asteroids: The Missing Basalts on the Aubrite Parent Body - Abstracts of the Lunar and Planetary Science Conference,...
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