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Northwest Africa 11508 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 11508 This is an OFFICIAL meteorite name. Abbreviation: NWA 11508 Observed fall: No Year found: 2017 Country: Algeria Mass: 302 g | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 406 approved meteorites classified as Eucrite-pmict. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||||||||
Comments: | Approved 6 Dec 2017 | ||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 106:
Northwest Africa 11508 (NWA 11508) Algeria Purchased: 2017 Jun Classification: HED achondrite (Eucrite, polymict) History: Purportedly found near the Algeria/Libya border and purchased by Darryl Pitt in June 2017 from a dealer in Mauritania. Petrography: (A. Irving and S. Kuehner, UWS) Breccia consisting mainly of fairly coarse grained eucritic debris with minor diogenitic orthopyroxene plus some vitrophyric eucrite clasts and eucritic breccia clasts. Other minerals are exsolved pigeonite, calcic plagioclase, ferroan pigeonite, silica polymorph, fayalite, ilmenite, Ti-free chromite, troilite and Ni-free metal. Geochemistry: Orthopyroxene host (Fs57.3Wo4.0, FeO/MnO = 33), clinopyroxene exsolution lamella (Fs27.3Wo40.2, FeO/MnO = 31), diogenitic orthopyroxene (Fs21.2Wo1.3; Fs30.7Wo4.5; FeO/MnO = 27-30; N = 2), ferroan pigeonite (Fs51.4Wo22.0; Fs74.7Wo14.3; FeO/MnO 21-32; N = 2), fayalite (Fa77.3, FeO/MnO = 45), plagioclase (An85.0-86.0Or0.4, N = 2). Classification: Eucrite (polymict breccia). Specimens: 20.1 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 1336 approved meteorites from Algeria (plus 30 unapproved names) (plus 4 impact craters) | ||||||||||||||||||||||||||||||
Also see: |
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Revision history: |
This lists important revisions made to data for this record.
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