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| Northwest Africa 13754 | |||||||||||||||||||||||||||||||||
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| Basic information | Name: Northwest Africa 13754 This is an OFFICIAL meteorite name. Abbreviation: NWA 13754 Observed fall: No Year found: 2020 Country: (Northwest Africa) Mass:  1096 g | ||||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 93 approved meteorites classified as Lodranite. [show all] Search for other: Acapulcoite-lodranite family, Lodranites, and Primitive achondrites | ||||||||||||||||||||||||||||||||
| Comments: | Approved 13 Mar 2021 | ||||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 110:
Northwest Africa 13754 (NWA 13754) (Northwest Africa) Purchased: 2020 Dec Classification: Primitive achondrite (Lodranite) History: Purchased by Ziyao Wang in December 2020 from a dealer in Zagora, Morocco Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Breccia composed of coarse grained polymineralic clasts (grainsize up to 3 mm, protogranular texture) plus related discrete mineral grains (up to 5 mm) in a finer grained, heavily stained matrix (dark brown in thin section) composed of the same mineral phases. The major minerals are olivine and orthopyroxene (containing blebs and some exsolution lamellae of clinopyroxene); accessory minerals are Ti-free chromite, kamacite (partially altered to iron hydroxides) and troilite. Plagioclase is absent. Geochemistry: Olivine (Fa10.4-10.8, FeO/MnO = 23-24, N = 4), orthopyroxene (Fs9.2-9.6Wo1.1-1.2, FeO/MnO = 13-14, N = 4), clinopyroxene (Fs3.7-3.9Wo46.3-44.7, N = 3). Oxygen isotopes (K. Ziegler, UNM): analyses of acid-washed subsamples by laser fluorination gave, respectively, δ17O -0.089, 0.084, 0.127; δ18O 2.357, 2.519, 2.392; Δ17O -1.334, -1.246, -1.136 per mil (all data linearized). Classification: Lodranite (breccia). Specimens: 54.4 g including one polished thin section at UWB; remainder with WangZ. | ||||||||||||||||||||||||||||||||
| Data from: MB110 Table 0 Line 0: |
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| Plots: | O isotopes: | ||||||||||||||||||||||||||||||||
| Institutions and collections |
UNM: Institute of Meteoritics
MSC03 2050
University of New Mexico
Albuquerque NM 87131-1126
USA, United States; Website (institutional address; updated 12 Feb 2015) 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., 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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| Photos: |
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| Geography: |
Statistics: This is 1 of 9710 approved meteorites from (Northwest Africa) (plus 1853 unapproved names) | ||||||||||||||||||||||||||||||||
| Also see: |
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| Revision history: |
This lists important revisions made to data for this record.
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