Slice of a brachinite meteorite (Northwest Africa 3151)
Type
Achondrite
Subgroups
Ureilite
Brachinite
Acapulcoite
Lodranite
Winonaite
IAB
IIICD
Parent body
Various
Composition
Heterogeneous
Primitive achondrites are a subdivision of meteorites. They are classified on the same rank (historically called "Class") and lying between chondrites and achondrites. They are called primitive because they are achondrites that have retained much of their original chondritic properties. Very characteristic are relic chondrules and chemical compositions close to the composition of chondrites. These observations are explained as melt residues, partial melting, or extensive recrystallization.[1][2]
^Cite error: The named reference Weisberg 2006 was invoked but never defined (see the help page).
^Pilski, Andrzej S.; Tadeusz A. Przylibski; Katarzyna Łuszczek (2011). "Primitive Enstatite Achondrites" (PDF). Meteorites. Retrieved 30 December 2012.
and 28 Related for: Primitive achondrite information
Primitiveachondrites are a subdivision of meteorites. They are classified on the same rank (historically called "Class") and lying between chondrites...
body. Achondrites are classified into the following groups: Primitiveachondrites Asteroidal achondrites Lunar meteorites Martian meteorites Primitive achondrites...
of the IAB group/complex. IAB meteorite – an iron meteorite and primitiveachondrite of the IAB group/complex. IB meteorite – an iron meteorite group...
follows: Chondrites PrimitiveachondritesAchondrites where irons and stony–irons are considered to be achondrites or primitiveachondrites, depending on the...
Acapulcoites are a group of the primitiveachondrite class of stony meteorites. The acapulcoites are named after the only specimen of the group, with a...
a group of primitiveachondrite meteorites. Like all primitiveachondrites, winonaites share similarities with chondrites and achondrites. They show signs...
partial melting and impact events and are grouped with the primitiveachondrites and the achondrites. Iron meteorites are derived from planetary cores of asteroids...
either as primitiveachondrites or as asteroidal achondrites. Like all primitiveachondrites, they have similarities with chondrites and achondrites. Brachinites...
Lodranites are a small group of primitiveachondrite meteorites that consists of meteoric iron and silicate minerals. Olivine and pyroxene make up most...
(silicate) in the Tholen classification system, and is similar to primitiveachondrite meteorites. Photometric observations at the Organ Mesa Observatory...
an S-type in the Tholen classification system, and is similar to primitiveachondrite meteorites. Measurements of the thermal inertia of 32 Pomona give...
chrome-spinels, retrieved from micrometeorites in acid baths has shown that primitiveachondrites, which represent less than half a percent of the MM reaching Earth...
of melting occur the meteorite would probably be classified as a primitiveachondrite instead of a chondrite. All groups of ordinary and enstatite chondrites...
meteorites according to their overall composition and a group of primitiveachondrites because of silicate inclusions that show a strong affinity to winonaites...
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...
The Winona meteorite is a primitiveachondrite meteorite. It is the type specimen and by far the largest meteorite of the winonaite group. The Winona meteorite...
IIICD meteorites are a group of primitiveachondrites. They are classified in a clan together with the IAB meteorites and the winonaites. IIICD meteorites...
N., Clayton, R.; K., Mayeda, T. (July 1992). "Brachinites: A New PrimitiveAchondrite Group". Meteoritics. 27 (3): 267. Bibcode:1992Metic..27R.267N. ISSN 0026-1114...
and are often called enstatite achondrites. Their igneous origin separates them from primitive enstatite achondrites and means they originated in an...
S. (2010). "Differentiation of Vesta and the parent bodies of other achondrites". J. Geophys. Res. Planets. 115 (E8). Bibcode:2010JGRE..115.8001G. doi:10...
meteorite is the type specimen of the brachinites class of the asteroidal achondrites. The meteorite is named after Brachina in South Australia. Two fragments...
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...
alteration. The Martian meteorite is an igneous rock classified as an achondrite type of the nakhlite group. Allan Hills 84001 Astrobiology Glossary of...
should be called "primitive enstatite achondrites". Glossary of meteoritics Keil, Klaus (31 December 2009). "Enstatite achondrite meteorites (aubrites)...
proposed that the Zakłodzie meteorite should be classified as a "primitive enstatite achondrite". It was classified as an Aubrite-an (anomalous) in 2006. Currently...
stage between chondrites and achondrites and to name them amphoterites. We know now that LL chondrites and achondrites are quite different, so this name...
CR CV C ungrouped Enstatite EH EL Kakangari Ordinary H L LL Rumuruti Achondrite Iron IC IIAB IIC IID IIE IIG IIIAB IIIE IIIF IVA IVB Stony-iron Mesosiderite...
A kerogen-like material is also in the ALH84001 Martian meteorite (an achondrite). The CM meteorite Murchison has over 96 extraterrestrial amino acids...
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