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Northwest Africa 14421 | |||||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 14421 This is an OFFICIAL meteorite name. Abbreviation: NWA 14421 Observed fall: No Year found: 2021 Country: (Northwest Africa) Mass: ![]() | ||||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 409 approved meteorites classified as LL3. [show all] Search for other: LL chondrites, LL chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3) | ||||||||||||||||||||||||||||||||
Comments: | Approved 24 Dec 2021 | ||||||||||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 110:
Northwest Africa 14421 (NWA 14421) (Northwest Africa) Purchased: 2021 Feb Classification: Ordinary chondrite (LL3) History: Purchased by Jason Whitcomb in February 2021 from an Algerian dealer. Petrography: (A. Irving, UWS and J. Boesenberg, BrownU) Well formed, relatively closely packed, unequilibrated, glass-bearing chondrules (apparent diameter 940±440 µm, N = 24) are set in a dark fine grained matrix containing altered kamacite and troilite. One grain of highly aluminous Al-Ti-diopside was found. One LL7 lithic clast with triple grain junction texture and no recognizable chondrules is present in the studied thin section. Geochemistry: Olivine (Fa21.0±15.3, range Fa0.3-45.1, N = 10), low-Ca pyroxene (Fs19.4±14.0Wo1.5±0.8, range Fs0.8-32.7Wo0.4-2.3, N = 5), Al-Ti-diopside (Fs0.7Wo46.2, Al2O3 10.4 wt.%, TiO2 1.2 wt.%), kamacite (Ni 4.7-5.6 wt.%, N = 2). Magnetic susceptibility log χ (× 10-9 m3/kg) = 3.37. Classification: Ordinary chondrite (LL3). Specimens: 24.36 g including one polished thin section at PSF; remainder with Mr. J. Whitcomb. | ||||||||||||||||||||||||||||||||
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) BrownU: Brown University Providence, RI 02912, United States (institutional address; updated 7 Sep 2019) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 110, in preparation (2021)
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Geography: |
Statistics: This is 1 of 8394 approved meteorites from (Northwest Africa) (plus 1899 unapproved names) |