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Northeast Africa 021 | |||||||||||||||||||||||||||||||||||
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Basic information | Name: Northeast Africa 021 This is an OFFICIAL meteorite name. Abbreviation: NEA 021 Observed fall: No Year found: 2020 Country: Libya Mass: ![]() | ||||||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 361 approved meteorites classified as LL3. [show all] Search for other: LL chondrites, LL chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3) | ||||||||||||||||||||||||||||||||||
Comments: | Approved 21 Feb 2021 | ||||||||||||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 110:
Northeast Africa 021 (NEA 021) Libya Purchased: 2020 Jan Classification: Ordinary chondrite (LL3) History: Purchased by Mbark Arjdal in January 2020 from a Libyan dealer. Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Well-formed, closely-packed glass-bearing chondrules (apparent diameter 1040±640 µm, N = 25) are set in a fine grained matrix containing altered kamacite, troilite, taenite and low-Ti chromite. Calcic plagioclase is present in some chondrules. Geochemistry: Olivine (Fa23.5±15.0, range Fa0.9-49.1, N = 10), low-Ca pyroxene (Fs17.7±8.0Wo2.8±2.0, range Fs6.5-27.8Wo0.3-6.1, N = 7), subcalcic augite (Fs26.5Wo33.5), augite (Fs15.6Wo44.6), plagioclase in chondrule (An80.2Or1.0). Magnetic susceptibility log χ (× 10-9 m3/kg) = 3.03. Classification: Ordinary chondrite (LL3). Specimens: 20.1 g including one polished thin section at UWB; remainder with Mr. M. Arjdal. | ||||||||||||||||||||||||||||||||||
Data from: MB110 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) WUSL: Washington Univ., One Brookings Drive, St. Louis, MO 63130, United States (institutional address; updated 17 Oct 2011) 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 Meteoritical Bulletin, no. 110, in preparation (2021)
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Geography:![]() |
Statistics: This is 1 of 1509 approved meteorites from Libya (plus 22 unapproved names) (plus 2 impact craters) |