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Northeast Africa 038 | |||||||||||||||||||||||||||||
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Basic information | Name: Northeast Africa 038 This is an OFFICIAL meteorite name. Abbreviation: NEA 038 Observed fall: No Year found: 2022 Country: Libya Mass: 3.29 kg | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 100 approved meteorites classified as Eucrite-melt breccia. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||||||
Comments: | Approved 12 Nov 2022 | ||||||||||||||||||||||||||||
Writeup |
Writeup from MB 111:
Northeast Africa 038 (NEA 038) Libya Purchased: 2022 Jun Classification: HED achondrite (Eucrite, melt breccia) History: Found in Libya and purchased in June 2022 by Ziyao Wang from a dealer in Ouargla, Algeria. Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Composed of microgabbroic eucrite clasts and related debris plus sparse regions of dark melt matrix. Both pyroxene (exsolved pigeonite) and calcic plagioclase occur as very fine grained, polycrystalline aggregates, signifying a high degree of shock experienced by this meteorite. Exsolution lamellae within pyroxenes exhibit an irregular, mottled appearance. Accessory phases include silica polymorph, ilmenite, medium-Ti chromite and troilite. Geochemistry: Pigeonite host (Fs53.2-57.6Wo11.7-6.1, FeO/MnO = 31-35, N = 6), augite exsolution lamellae (Fs28.2-34.5Wo41.6-35.8, FeO/MnO = 31-35, N = 6), plagioclase (An89.2-90.5Or0.6-0.4, N = 3). Classification: Eucrite melt breccia. The pyroxene and plagioclase in this Libyan specimen exhibit the same distinctive polycrystalline textures as observed in specimens of Jikharra 001, and thus pairing with that very large find is likely. Specimens: 32.9 g including one polished thin section at UWB; remainder with WangZ. | ||||||||||||||||||||||||||||
Data from: MB111 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) WangZ: Ziyao Wang, Hebei GEO University North Campus, Huai An dong road 127, Shijiazhuang, Hebei Province , China (private address; updated 25 Jun 2021) |
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Catalogs: |
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References: | Published in Gattacceca J., McCubbin F. M., Grossman J. N., Schrader D. L., Chabot N. L., D’Orazio M., Goodrich C., Greshake A., Gross J., Joy K. H., Komatsu M. and Miao B. (2023) The Meteoritical Bulletin, No. 111. Meteoritics & Planetary Science 58, 901–904. ?
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Geography: |
Statistics: This is 1 of 1550 approved meteorites from Libya (plus 23 unapproved names) (plus 2 impact craters) | ||||||||||||||||||||||||||||
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Revision history: |
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