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Northwest Africa 13734 | |||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 13734 This is an OFFICIAL meteorite name. Abbreviation: NWA 13734 Observed fall: No Year found: 2020 Country: Algeria Mass: 2.9 kg | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 281 approved meteorites classified as Eucrite-mmict. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||||||
Comments: | Approved 6 Feb 2021 | ||||||||||||||||||||||||||||
Writeup |
Writeup from MB 110:
Northwest Africa 13734 (NWA 13734) Algeria Purchased: 2020 Classification: HED achondrite (Eucrite, monomict) History: Purchased by Jesper Grønne in 2020 from a Moroccan dealer. Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Monomict breccia composed of microgabbroic eucrite clasts and related crystalline debris in a finer grained matrix. Minerals are exsolved pigeonite (pale orange in thin section), calcic plagioclase (polycrystalline), silica polymorph, Ti-chromite, ilmenite and troilite. Geochemistry: Low-Ca pyroxene (Fs60.1-62.0Wo1.8-3.6, FeO/MnO = 31-35, N = 5), augite exsolution lamellae (Fs26.1-26.7Wo43.8-44.2, FeO/MnO = 30-34, N = 5), plagioclase (An86.9-90.2Or0.4-0.2, N = 4). Classification: Eucrite (monomict breccia, microgabbroic, shocked). Specimens: 20.2 g including one polished thin section at UWB; remainder with Mr. J. Grønne. | ||||||||||||||||||||||||||||
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 1358 approved meteorites from Algeria (plus 30 unapproved names) (plus 4 impact craters) | ||||||||||||||||||||||||||||
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Revision history: |
This lists important revisions made to data for this record.
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