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Northwest Africa 14360
Basic information Name: Northwest Africa 14360
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14360
Observed fall: No
Year found: 2019
Country: Niger
Mass:help 9.3 kg
Recommended:  L5    [explanation]

This is 1 of 8689 approved meteorites (plus 4 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 31 Oct 2021
Writeup from MB 110:

Northwest Africa 14360 (NWA 14360)

North Niger, Niger

Purchased: 2019

Classification: Ordinary chondrite (L5)

History: One single stone was purchased in 2019 from a dealer in Niger by Tomasz Jakubowski.

Physical characteristics: A single stone with fusion crust

Petrography: (Lukasz Karwowski, USil) Chondrules of different types with dominance of barred olivine chondrules, with diameter to 1.5 mm. Px and Ol are 78.1 vol%. of the metorite mass. Pl is up 11.8 vol%. Metallic phases are 3.0 vol%. Troilite is up to 5.9 vol%. Spinel (Cr-spinel) is up to 0.9 vol%. Average content of the secendary Fe-rich minerals (e.g. hydroxides) is 0.4 vol%.

Geochemistry: (L. Karwowski, Institute of Earth Sciences at Faculty of Natural Sciences, University of Silesia in Katowice). Olivine Fa24.67 (range Fa24.19-Fa24.93, N=20). Orthopyroxene Fs20.98Wo1.4 (range Fs20.56-21.7, Wo1.0-1.7, N=16). Feldspar composition: Ab80.2Or5.0An14.8. Mean content of Al2O3, MgO and TiO2 in chromium spinel is 6.70 wt%, 2.05 wt% and 2.05 wt%, respectively. Metal phases are kamacite and tetratenite. The kamacite has a Ni content in the range 5.83 - 6.81 wt%, while the Co content is in the range 0.39 to 0.56 wt%. Ttetrataenite is has Ni content from 49.68 to 50.46 wt%, and Co up to 0.05 wt%. High-Ca monoclinic pyroxene, similar to diopside, is very rare. Accesory minerals: chlorapatite and merrylite.

Classification: Ordinary chondrite (L5).

Specimens: The main mass, a 9190 g specimen, is in Krzysztof Socha private collection. Small fragments with the total mass 71 g are stored at USil (catalogue no: WNoZ/Mt/110). 39 g was used for thin-section preparation and spectroscopic investigation (Mössbauer spectroscopy).

Data from:
  Table 0
  Line 0:
State/Prov/County:North Niger
Place of purchase:Niger
Date:P 2019
Mass (g):9300
Shock stage:S1
Weathering grade:W1
Fayalite (mol%):24.7 (N=20)
Ferrosilite (mol%):21.0 (n=16)
Wollastonite (mol%):1.4
Classifier:L. Karwowski and K. Szopa, USil
Type spec mass (g):71
Type spec location:USil
Main mass:Krzysztof Socha
Comments:Submitted by Lukasz Karwowski, Krzysztof Szopa.
   and collections
USil: Earth Sciences Museum, Institute of Earth Sciences, Faculty of Natural Sciences, University of Silesia in Katowice, B?dzi?ska 60, Sosnowiec, 41_200, Poland; Website (institutional address; updated 22 Nov 2020)
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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     This is the only approved meteorite from North Niger, Niger
     This is 1 of 114 approved meteorites from Niger (plus 4 unapproved names)

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