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Northwest Africa 8677 | |||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 8677 This is an OFFICIAL meteorite name. Abbreviation: NWA 8677 Observed fall: No Year found: 2014 Country: (Northwest Africa) Mass: ![]() | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 569 approved meteorites (plus 1 unapproved name) classified as Eucrite. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||||||
Comments: | Approved 12 Dec 2014 | ||||||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 103:
Northwest Africa 8677 (NWA 8677) (Northwest Africa) Purchased: 2014 May Classification: HED achondrite (Eucrite) History: Purchased in Morocco by Ali and Mohammed Hmani in May 2014, and said to have been found near Foum El Hisn, Morocco. Petrography: (A. Irving and S. Kuehner, UWS) Breccia composed of clasts of recystallized basaltic eucrite (now overprinted by a granulitic texture) and subordinate clasts of gabbroic eucrite in a finer grained matrix of related debris. Both lithologies consist predominantly of compositionally-similar exsolved pigeonite and calcic plagioclase, with accessory silica polymorph, ilmenite and zircon. Plagioclase in the gabbroic clasts exhibits multi-domain structure and undulose extinction. A glassy shock vein was observed. Geochemistry: Orthopyroxene host (Fs58.3-58.5Wo3.4-3.2, FeO/MnO = 31-32, N = 3), clinopyroxene exsolution lamellae (Fs25.3-25.4Wo44.2-44.3, FeO/MnO = 30-31, N = 3). Classification: Eucrite (genomict, shocked). Specimens: 21.7 g including one polished thick section at UWB. The remainder is held by Hmani. | ||||||||||||||||||||||||||||
Data from: MB103 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) Hmani: A. Hmani Moroccan Imports, 13 rue Jules Hardouin Mansart, 92600 Asnières, France (private address) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 103, MAPS 52, 1014, May 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12888/full
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Geography: |
Statistics: This is 1 of 8890 approved meteorites from (Northwest Africa) (plus 1871 unapproved names) |