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Northwest Africa 14269 | |||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 14269 This is an OFFICIAL meteorite name. Abbreviation: NWA 14269 Observed fall: No Year found: 2021 Country: (Northwest Africa) Mass: 2.85 kg | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 322 approved meteorites (plus 2 unapproved names) classified as Martian (shergottite). [show all] Search for other: Martian meteorites | ||||||||||||||||||||||||||||
Comments: | Approved 11 Nov 2021 | ||||||||||||||||||||||||||||
Writeup |
Writeup from MB 110:
Northwest Africa 14269 (NWA 14269) (Northwest Africa) Purchased: 2021 Apr Classification: Martian meteorite (Shergottite) History: Purchased by Mark Lyon and Craig Zlimen in April 2021 from an Algerian dealer. Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Diabasic texture with some preferred orientation of prismatic, zoned clinopyroxene grains (up to 2 mm) and lath-like maskelynite grains (up to 1.5 mm). Accessory phases include pyrrhotite (some stained), ulvöspinel (with variable Cr contents), ilmenite, silica polymorph, K-feldspar, merrillite and minor baddeleyite. Some small melt pockets containing "swirly" vesicular glass are present. Geochemistry: Subcalcic augite cores (Fs21.1-25.2Wo33.0-35.2, FeO/MnO = 25-30, N = 3), ferroan pigeonite rims (Fs51.2-62.9Wo12.8-15.4, FeO/MnO = 37-38, N = 3), ferropigeonite (Fs72.0Wo7.7, FeO/MnO = 36), maskelynite (An50.7-53.6Or1.4-2.1, N = 3), K-feldspar (Or62.9Ab26.7An10.4). Classification: Shergottite (aphyric, diabasic). Likely paired with NWA 12262 and other such stones. Specimens: 26.9 g including one polished thin section at UWB; remainder with Mr. M. Lyon and Mr. C. Zlimen. | ||||||||||||||||||||||||||||
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 9710 approved meteorites from (Northwest Africa) (plus 1853 unapproved names) | ||||||||||||||||||||||||||||
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Revision history: |
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