An achondrite is a stony meteorite that does not contain chondrules. It consists of material similar to terrestrial basalts or plutonic rocks and has been...

Primitive achondrites are a subdivision of meteorites. They are classified on the same rank (historically called "Class") and lying between chondrites...

the IAB group/complex. IAB meteorite – an iron meteorite and primitive achondrite of the IAB group/complex. IB meteorite – an iron meteorite group now part...

E-type (enstatite achondrite–type) asteroids are asteroids thought to have enstatite (MgSiO3) achondrite surfaces. They form a large proportion of asteroids...

asteroids (including 4 Vesta itself) is similar to the spectra of basaltic achondrite HED meteorites. A J-type has been suggested for asteroids having a particularly...

group with <5 members) Achondrites Primitive achondrites Acapulcoite group Lodranite group Winonaite group Asteroidal achondrites HED meteorite clan (possibly...

meteorites are a clan (subgroup) of achondrite meteorites. HED stands for "howardite–eucrite–diogenite". These achondrites came from a differentiated parent...

homes were built in Tataouine. On June 27, 1931, a meteorite of unusual achondrite type and green color impacted at Tataouine; about 12 kg of fragments were...

into a thin fusion crust, which on most meteorites is black (on some achondrites, the fusion crust may be very light-colored). On stony meteorites, the...

and nickel content. Non-metallic meteorites that lack chondrules are achondrites, which are believed to have formed more recently than chondrites. There...

Vesta and are part of the HED meteorite clan. They are the most common achondrite group with over 100 meteorites found. Eucrites consist of basaltic rock...

accessible to scientists, in the form of over 1200 HED meteorites (Vestan achondrites), giving insight into Vesta's geologic history and structure. NASA Infrared...

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...

years 4. Re-Os isochron 4.68 ± 0.15 billion years 2. Juvinas (basaltic achondrite) 1. Pb-Pb isochron 4.556 ± 0.012 billion years 2. Pb-Pb isochron 4.540...

Mittelfehldt D (1996). "Mineralogy of carbonaceous chondrite clasts in HED achondrites and the moon". Meteoritics & Planetary Science. 31 (4): 518–537. Bibcode:1996M&PS...

The Peekskill meteorite is the object resulting from a well-documented meteorite event that occurred in October, 1992, in Peekskill, New York, United States...

(silicate) in the Tholen classification system, and is similar to primitive achondrite meteorites. Photometric observations at the Organ Mesa Observatory in...

heard the several stones falling. The meteorite is classified as an "achondrite stony meteorite of the diogenite class in the HED group" of meteorites...

S-type in the Tholen classification system, and is similar to primitive achondrite meteorites. Measurements of the thermal inertia of 32 Pomona give a value...

measured was an anomalous ultra-fine-grained porous polymict ureilite achondrite, with large carbonaceous grains. Reflectance spectra of the meteorite...

melting and impact events and are grouped with the primitive achondrites and the achondrites. Iron meteorites are derived from planetary cores of asteroids...

called chondrites. Stony meteoroids without these features are called "achondrites", which are typically formed from extraterrestrial igneous activity;...

about 1000 °C. A geological name for ureilite would be olivine-pigeonite achondrite. Compared to most other meteorites, ureilites tend to have a high percentage...

Binzel and S. Xu Chips off of asteroid 4 Vesta: Evidence for the parent body of basaltic achondrite meteorites, Science, Vol. 260, p. 186 (1993). v t e...

Lunar meteorite (Lunaite) — Clan — Lunar meteorite Allan Hills 81005 Type Achondrite Subgroups Highland breccia Mare basalt Parent body Moon Total known specimens...

14.808 ± 0.038 Ma, Middle Miocene Exposed Yes Drilled Yes Bolide type Achondrite Location Coordinates 48°53′N 10°34′E / 48.883°N 10.567°E / 48.883;...

group of primitive achondrite meteorites. Like all primitive achondrites, winonaites share similarities with chondrites and achondrites. They show signs...

Lodranites are a small group of primitive achondrite meteorites that consists of meteoric iron and silicate minerals. Olivine and pyroxene make up most...

possible reasons may explain the lack of PGE: The projectile was of the achondrite type, hence contained low PGEs, and a shallow-angle impact of under 45°...

asteroid, but the visual spectrum is consistent with an evolved form of achondrite called an angrite. A-class asteroids are tinted red in hue, with a moderate...