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Northwest Africa 13281 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 13281 This is an OFFICIAL meteorite name. Abbreviation: NWA 13281 Observed fall: No Year found: 2019 Country: Niger Mass: 50 kg | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 8890 approved meteorites (plus 5 unapproved names) classified as L5. [show all] Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7) | ||||||||||||||||||||||||||||||
Comments: | Approved 21 Mar 2020 | ||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 109:
Northwest Africa 13281 (NWA 13281) Niger Find: 2019 Classification: Ordinary chondrite (L5) History: Found by nomads in Niger in 2019. Later purchased by Jesper Gronne from a Moroccan dealer in October 2019. Physical characteristics: Sample contains a dark-brown fusion crust. Petrography: (D. Sheikh, FSU) Sample is an equilibrated ordinary chondrite with blurred chondrule boundaries (Av. 750±50µm, n=7) and contains olivine, orthopyroxene, kamacite, taenite, troilite, chromite, merrillite, chlorapatite, iron oxides, and secondary recrystallized plagioclase (20±10µm). Geochemistry: Olivine (Fa22.8±0.3, range Fa22.2-23.2, n=30), Orthopyroxene (Fs19.5±0.3Wo1.3±0.2, range Fs19.1-20.1Wo1.0-1.6, n=30). Classification: Ordinary Chondrite (L5) based on Fa and Fs homogeneity, secondary recrystallized plagioclase grain size, and magnetic susceptibility. Specimens: 55.73 grams at UCLA; main mass with Jesper Gronne. | ||||||||||||||||||||||||||||||
Data from: MB109 Table 0 Line 0: |
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Institutions and collections |
UCLA: Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90095-1567, United States (institutional address; updated 17 Oct 2011) FSU: Department of Geological Sciences, Florida State University, Tallahassee FL 32306-4100, United States (institutional address; updated 16 Dec 2010) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 109, in preparation (2020)
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Geography: |
Statistics: This is 1 of 119 approved meteorites from Niger (plus 4 unapproved names) | ||||||||||||||||||||||||||||||
Also see: |
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Revision history: |
This lists important revisions made to data for this record.
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