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Northwest Africa 11458 | |||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 11458 This is an OFFICIAL meteorite name. Abbreviation: NWA 11458 Observed fall: No Year found: 2016 Country: (Northwest Africa) Mass: 422 g | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 226 approved meteorites classified as Eucrite-br. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||||||
Comments: | Approved 30 Oct 2017 | ||||||||||||||||||||||||||||
Writeup |
Writeup from MB 106:
Northwest Africa 11458 (NWA 11458) (Northwest Africa) Purchased: 2016 Classification: HED achondrite (Eucrite, brecciated) Physical characteristics: Fully crusted stone. Cut surface reveals a light-gray interior with darker clasts (to 5 mm). Petrography: (J. Gattacceca, CEREGE): Strongly brecciated igneous rock. The original texture is almost entirely obliterated by brecciation. Main minerals are orthopyroxenes, some with augite exsolution and plagioclase. Chromite, ilmenite, silica polymorph, troilite, rare metal. Geochemistry: Pyroxenes: orthopyroxene Fs58.2±0.3Wo2.1±0.6 (N=7), augite exsolution Fs40.1Wo22.9 (N=1), FeO/MnO=37.3. Plagioclase An87.6±3.0Ab12.0±3.0Or0.3±0.1 (N=3). Magnetic susceptibility log χ (× 10-9 m3/kg) = 2.70. Classification: Eucrite-br. Specimens: 26 g and a polished section at CEREGE. Main mass with R. Lenssen. | ||||||||||||||||||||||||||||
Data from: MB106 Table 0 Line 0: |
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Institutions and collections |
CEREGE: CEREGE
BP 80
Avenue Philibert, Technopole de l'Arbois
13545 Aix-en-Provence Cedex 4
France, France (institutional address; updated 10 Jun 2023) |
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Catalogs: |
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References: | Published in Gattacceca J., Bouvier A., Grossman J., Metzler K., and Uehara M. (2019) Meteoritical Bulletin, no. 106. Meteorit. Planet. Sci. 54 in press.
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Geography: |
Statistics: This is 1 of 9589 approved meteorites from (Northwest Africa) (plus 1869 unapproved names) | ||||||||||||||||||||||||||||
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Revision history: |
This lists important revisions made to data for this record.
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