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Northwest Africa 11271 | |||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 11271 This is an OFFICIAL meteorite name. Abbreviation: NWA 11271 Observed fall: No Year found: 2017 Country: (Northwest Africa) Mass: 315 g | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 603 approved meteorites (plus 1 unapproved name) classified as Eucrite. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||||||
Comments: | Approved 28 Jun 2017 | ||||||||||||||||||||||||||||
Writeup |
Writeup from MB 106:
Northwest Africa 11271 (NWA 11271) (Northwest Africa) Purchased: 2017 Feb Classification: HED achondrite (Eucrite) History: Purchased by Aras Jonikas in February 2017 from a Moroccan dealer. Petrography: (A. Irving and S. Kuehner, UWS) Breccia consisting of closely-packed microgabbroic clasts with sparse matrix. Minerals are exsolved pigeonite, calcic plagioclase (exhibiting undulose extinction), silica polymorph, ilmenite, chromite, troilite and minor calcite. Geochemistry: Orthopyroxene host (Fs59.7-62.6Wo6.1-2.1, FeO/MnO = 30-32, N = 3), clinopyroxene exsolution lamellae (Fs28.0-28.3Wo42.9-42.4, FeO/MnO = 34, N = 2), plagioclase (An88.3-90.3Or0.7, N = 2). Classification: Eucrite (monomict breccia, microgabbroic). Specimens: 20.72 g including one polished thin section at PSF; remainder with Mr. A. Jonikas. | ||||||||||||||||||||||||||||
Data from: MB106 Table 0 Line 0: |
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Institutions and collections |
PSF: Planetary Studies Foundation,10 Winterwood Lane, Unit B, Galena, Illinois 61036-9283, United States; Website (institutional address; updated 1 Dec 2011) UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012) |
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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 9710 approved meteorites from (Northwest Africa) (plus 1853 unapproved names) | ||||||||||||||||||||||||||||
Also see: |
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Revision history: |
This lists important revisions made to data for this record.
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