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Northwest Africa 11955 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 11955 This is an OFFICIAL meteorite name. Abbreviation: NWA 11955 Observed fall: No Year found: 2018 Country: (Northwest Africa) Mass: 272 g | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 318 approved meteorites (plus 2 unapproved names) classified as Martian (shergottite). [show all] Search for other: Martian meteorites | ||||||||||||||||||||||||||||||
Comments: | Approved 15 Sep 2018 | ||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 107:
Northwest Africa 11955 (NWA 11955) (Northwest Africa) Purchased: 2018 May Classification: Martian meteorite (Shergottite) History: Purchased by Ben Hoefnagels in May 2018 from a dealer in Zagora, Morocco. Petrography: (A. Irving and S. Kuehner, UWS) Inequigranular gabbroic texture (pyroxene up to 3.1 mm, olivine up to 2.3 mm in length). Composed of homogeneous olivine, zoned pigeonite (prismatically twinned) and maskelynite with accessory Ti-chromite, ilmenite, merrillite, chlorapatite, pyrrhotite and minor baddeleyite. Geochemistry: Olivine (Fa49.3-49.4, FeO/MnO = 51-56, N = 3), pigeonite (Fs29.2-45.7Wo10.4-8.1, FeO/MnO = 30-33, N = 4), maskleynite (An50.9-55.0Or2.0-1.9, N = 2). Classification: Shergottite (gabbroic). Specimens: 23.4 g including one polished thin section at UWB; remainder with Mr. B. Hoefnagels. | ||||||||||||||||||||||||||||||
Data from: MB107 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) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 107, MAPS 55, 460-462
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Geography: |
Statistics: This is 1 of 9589 approved meteorites from (Northwest Africa) (plus 1869 unapproved names) | ||||||||||||||||||||||||||||||
Also see: |
This lists the most popular meteorites among people who looked up this meteorite.
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Revision history: |
This lists important revisions made to data for this record.
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