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Northeast Africa 028 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northeast Africa 028 This is an OFFICIAL meteorite name. Abbreviation: NEA 028 Observed fall: No Year found: 2020 Country: Libya Mass: 93 g | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 645 approved meteorites (plus 1 unapproved name) classified as CO3. [show all] Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CM-CO clan chondrites, and CO chondrites | ||||||||||||||||||||||||||||||
Comments: | Approved 6 Oct 2021 | ||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 110:
Northeast Africa 028 (NEA 028) Libya Purchased: 2020 Jun Classification: Carbonaceous chondrite (CO3) History: Purchased by Mbark Arjdal in June 2020 from a Libyan dealer. Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Well-formed, relatively small glass-bearing chondrules (apparent diameter 200±75 µm, N = 22), zoned olivine and pyroxene fragments, and very fine grained CAI are set in a fine grained matrix (~30 vol.%, deep red-brown in thin section) containing troilite, kamacite and taenite. Pleonaste is present in some chondrules. Mineral phases in CAI include amoeboid hercynite, perovskite and Al-Ti-diopside. Geochemistry: Olivine (Fa22.3±24.0, range Fa0.6-55.6, N = 5; Cr2O3 in ferroan olivine 0.04-0.10 wt.%, mean 0.07±0.02 wt.%, N = 6), low-Ca pyroxene (Fs2.6±1.5Wo0.9±0.2, range Fs1.3-4.2Wo0.7-1.1, N = 3), subcalcic augite (Fs6.2Wo34.9), Al-Ti-diopsde (Fs0.6Wo41.1, Al2O3 7.3 wt.%, TiO2 1.2 wt.%). Classification: Carbonaceous chondrite (CO3). Specimens: 21.9 g plus 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 1553 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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