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Northwest Africa 13281
Basic information Name: Northwest Africa 13281
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13281
Observed fall: No
Year found: 2019
Country: Niger
Mass:help 50 kg
Classification
  history:
Meteoritical Bulletin:  MB 109  (2021)  L5
Recommended:  L5    [explanation]

This is 1 of 9035 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
Writeuphelp
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:
Date:2019
Mass (g):50000
Pieces:200
Class:L5
Shock stage:S3
Weathering grade:W2
Fayalite (mol%):22.8±0.3 (N=30)
Ferrosilite (mol%):19.5±0.3 (N=30)
Wollastonite (mol%):1.3±0.2 (N=30)
Magnetic suscept.:4.91
Classifier:D. Sheikh, FSU
Type spec mass (g):55.73
Type spec location:UCLA
Main mass:Jesper Gronne
Comments:Submitted by Daniel Sheikh
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)
Catalogs:
References: Published in Gattacceca J., McCubbin F. M., Grossman J., Bouvier A., Bullock E., Chennaoui Aoudjehane H., Debaille V., D’Orazio M., Komatsu M., Miao B. and Schrader D. L. (2021) The Meteoritical Bulletin, No. 109. Meteoritics & Planetary Science 56, 1626–1630.
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Geography:

Niger
Coordinates:Unknown.

Statistics:
     This is 1 of 123 approved meteorites from Niger (plus 6 unapproved names)

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