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Howardite meteorite
A meteorite classification type
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About Howardite meteorite
Name:
Howardites are named for Edward Howard, a pioneer of meteoritics.
Howardites are an abundant group of polymict-breccia achondrites that appear to represent mixtures of eucrites and diogenites (these three linked groups are collectively known as HED meteorites and may come from asteroid 4 Vesta). The main minerals in howardites are pyroxene (largely orthopyroxene) and Na-poor plagioclase. A minority of howardites are rich in solar-wind noble gases and thus inferred to be regolith breccias.
"An arbitrary divide between howardites and the polymict eucrites is a 9:1 ratio of eucrite to diogenite fragments." (Wikipedia)
"An arbitrary divide between howardites and the polymict eucrites is a 9:1 ratio of eucrite to diogenite fragments." (Wikipedia)
Meteoritical Society Code: Howardite
Unique Identifiers
Mindat ID:
49878
Long-form identifier:
mindat:1:1:49878:8
Classification of Howardite meteorite
Sub-divisions of Howardite meteorite
- Howardite meteorite
Synonyms of Howardite meteorite
Internet Links for Howardite meteorite
mindat.org URL:
https://www.mindat.org/min-49878.html
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References for Howardite meteorite
Reference List:
Duke, Michael B., Silver, Leon T. (1967) Petrology of eucrites, howardites and mesosiderites. Geochimica et Cosmochimica Acta, 31 (10) 1637-1665 doi:10.1016/0016-7037(67)90112-3
Hewins, Roger H (1979) The composition and origin of metal in howardites. Geochimica et Cosmochimica Acta, 43 (10) 1663-1673 doi:10.1016/0016-7037(79)90185-6
Takeda, Hiroshi (1979) A layered-crust model of a Howardite parent body. Icarus, 40 (3). 455-470 doi:10.1016/0019-1035(79)90039-3
Recorded finds for Howardite meteorite
Showing 17 recorded finds.
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
All localities listed without proper references should be considered as questionable.
Armenia | |
| - (2010) |
Belarus | |
| - (2010) |
Finland | |
| - (2010) |
France | |
| - (2010) |
Germany | |
| - (2010) |
India | |
| - (2010) |
| - (2010) |
Lithuania | |
| - (2010) |
Nigeria | |
| - (2010) |
Portugal | |
| - (2010) |
Russia | |
| - (2010) |
South Africa | |
| - (2010) |
South Sudan | |
| - (2010) |
Turkey | |
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Ukraine | |
| - (2010) |
USA | |
| - (2010) |
| - (2010) |
Northwest Africa Meteorites