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Northeast Africa 020 | |||||||||||||||||||||||||||||||||
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Basic information | Name: Northeast Africa 020 This is an OFFICIAL meteorite name. Abbreviation: NEA 020 Observed fall: No Year found: 2020 Country: Libya Mass: 167 g | ||||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 8 approved meteorites classified as LL4-7. [show all] Search for other: LL chondrites, LL chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7) | ||||||||||||||||||||||||||||||||
Comments: | Approved 8 Apr 2021 | ||||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 110:
Northeast Africa 020 (NEA 020) Libya Purchased: 2020 Apr Classification: Ordinary chondrite (LL4-7) History: Purchased by Mbark Arjdal in April 2020 from a Libyan dealer. Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Complex chondritic breccia comprised of discrete equilibrated chondrules plus equilibrated lithic chondrite clasts of diverse petrologic types set within a finer grained matrix containing taenite, stained kamacite, troilite and chlorapatite. Type 4 clasts have well-formed chondrules, Type 5 clasts have sparse chondrules in a recrystallized matrix, Type 6 clasts contain only rare remnant chondrules, and Type 7 clasts have triple grain junction texture and no obvious chondrules. Geochemistry: Olivine (Fa29.1±0.4, range Fa28.4-29.3, N = 5), low-Ca pyroxene (Fs24.1±1.5Wo1.6±0.9, range Fs22.5-25.9Wo0.2-2.3, N = 4), pigeonite (Fs22.0Wo9.6), subcalcic augite (Fs14.0Wo25.2). Classification: Ordinary chondrite (LL4-7 breccia). Specimens: 22.0 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, 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 Gattacceca J., McCubbin F.M., Grossman J., Bouvier A., Chabot N.L., D'Orazio M., Goodrich C., Greshake A., Gross J., Komatsu M., Miao B., and Schrader D. (2022) The Meteoritical Bulletin, No. 110. Meteorit. Planet. Sci. 1-4
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Geography: |
Statistics: This is 1 of 1552 approved meteorites from Libya (plus 24 unapproved names) (plus 2 impact craters) | ||||||||||||||||||||||||||||||||
Also see: |
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Revision history: |
This lists important revisions made to data for this record.
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