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Northwest Africa 11242 | |||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 11242 This is an OFFICIAL meteorite name. Abbreviation: NWA 11242 Observed fall: No Year found: 2017 Country: (Northwest Africa) Mass: ![]() | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 104 approved meteorites classified as Eucrite-unbr. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||||||
Comments: | Approved 9 Jun 2017 | ||||||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 106:
Northwest Africa 11242 (NWA 11242) (Northwest Africa) Purchased: 2017 Feb Classification: HED achondrite (Eucrite, unbrecciated) History: Purchased in Agadir, Morocco by Aziz Habibi in February 2017. Petrography: (A. Irving and S. Kuehner, UWS) Microgabbroic texture. Composed predominantly of very finely exsolved pigeonite and calcic plagioclase (almost completely converted to maskelynite) with accessory silica polymorph, Ti-chromite, Ni-poor kamacite, taenite and stained troilite. Some thin, dark shock veinlets crosscut the specimen. Geochemistry: Orthopyroxene (Fs44.7-45.4Wo2.7-2.9, FeO/MnO = 30-31, N = 3), clinopyroxene (Fs20.1-21.2Wo40.4-39.9, FeO/MnO = 27-28, N =3), maskelynite (An89.5-90.0Or0.3, N = 2). Classification: Eucrite (unbrecciated, microgabbroic, highly shocked). This is an unusual example of an unbrecciated eucrite containing maskelynitized plagioclase. Specimens: 13.4 g including one polished thin section at UWB; remainder with Mr. A. Habibi. | ||||||||||||||||||||||||||||
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, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 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 7655 approved meteorites from (Northwest Africa) (plus 1972 unapproved names) |