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Northwest Africa 14267 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 14267 This is an OFFICIAL meteorite name. Abbreviation: NWA 14267 Observed fall: No Year found: 2021 Country: (Northwest Africa) Mass: 1978 g | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 451 approved meteorites classified as Howardite. [show all] Search for other: Achondrites, HED achondrites, and Howardites | ||||||||||||||||||||||||||||||
Comments: | Approved 11 Nov 2021 | ||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 110:
Northwest Africa 14267 (NWA 14267) (Northwest Africa) Purchased: 2021 Classification: HED achondrite (Howardite) History: Purchased by Grant Harkness in 2021 from a Moroccan dealer. Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Complex breccia dominated by angular clasts of diogenitic orthopyroxene (exhibiting undulose extinction, with a wide range in Fe/Mg) plus ~25 vol.% lithic eucrite clasts and related mineral debris (exsolved pigeonite, unexsolved pigeonite and anorthite). The most ferroan orthopyroxene and some of the anorthite may be derived from feldspathic to noritic diogenite lithologies. Accessory phases include olivine (with a range in Fe/Mg), silica polymorph, ilmenite, Ti-free chromite and troilite. Geochemistry: Diogenitic orthopyroxene (Fs20.6-33.4Wo1.3-3.8, FeO/MnO = 27-30, N = 5), olivine (Fa13.4-28.4, FeO/MnO = 43-50, N = 4), orthopyroxene hosts (Fs62.2Wo2.9; Fs48.8Wo1.9; FeO/MnO = 30, N = 2), augite exsolution lamellae (Fs23.6-27.2Wo41.6-41.8; Fs19.3Wo43.7; FeO/MnO = 26-32, N = 3), pigeonite (Fs48.9Wo15.9; Fs50.5Wo6.0; FeO/MnO = 29-30; N = 2), anorthite (An92.5-95.2Or0.3-0.0, N = 3). Classification: Howardite (diogenite-rich). Specimens: 44.8 g including one polished thin section at PSF; remainder in the Harkness Collection. | ||||||||||||||||||||||||||||||
Data from: MB110 Table 0 Line 0: |
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Institutions and collections |
PSF: Planetary Studies Foundation,10 Winterwood Lane, Unit B, Galena, Illinois 61036-9283, United States; Website (institutional address; updated 1 Dec 2011) 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) |
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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 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names) | ||||||||||||||||||||||||||||||
Also see: |
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Revision history: |
This lists important revisions made to data for this record.
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