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Northwest Africa 11329 | |||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 11329 This is an OFFICIAL meteorite name. Abbreviation: NWA 11329 Observed fall: No Year found: 2014 Country: (Northwest Africa) Mass: 17.99 kg | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 100 approved meteorites classified as Eucrite-melt breccia. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||||||
Comments: | Approved 15 Aug 2017 | ||||||||||||||||||||||||||||
Writeup |
Writeup from MB 106:
Northwest Africa 11329 (NWA 11329) (Northwest Africa) Purchased: 2014 Feb Classification: HED achondrite (Eucrite, melt breccia) History: Purchased by Darryl Pitt in February 2014 from a Moroccan dealer at the Tucson Gem and Mineral Show. Petrography: (A. Irving and S. Kuehner, UWS) The studied specimen contains some small gabbroic clasts and related angular grains of exsolved pigeonite (pale orange in thin section) and calcic plagioclase (polycrystalline), but is dominated by fine grained, melt-textured matrix containing small vesicles. The matrix consists mainly of lath-like calcic plagioclase and prismatic low-Ca pyroxene (strongly zoned to ferropigeonite rims), together with accessory ilmenite, Ti-chromite, Ni-free metal and minor barite. Geochemistry: Gabbro clasts: orthopyroxene host (Fs62.3Wo2.2, FeO/MnO = 31), clinopyroxene exsolution lamella (Fs27.4Wo3.8, FeO/MnO = 33), anorthite (An91.1-91.2Or0.3-0.4, N = 2). Melt matrix: low-Ca pyroxene core (Fs44.0Wo3.8, FeO/MnO = 28), ferropigeonite rims (Fs75.4-75.9Wo22.7-16.9, FeO/MnO = 35-38, N = 2). Classification: Eucrite (melt-breccia). Specimens: 25.5 g including one polished thin section at UWB; remainder with DPitt. | ||||||||||||||||||||||||||||
Data from: MB106 Table 0 Line 0: |
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Institutions and collections |
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012) UWB: University of Washington, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023) DPitt: Darryl Pitt, 225 West 83rd Street, New York, NY 10024, United States; Website (private address) |
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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) | ||||||||||||||||||||||||||||
Also see: |
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Revision history: |
This lists important revisions made to data for this record.
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