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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 8373 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 Meteoritical Bulletin, no. 110, in preparation (2021)
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     This is the only approved meteorite from North Niger, Niger
     This is 1 of 97 approved meteorites from Niger (plus 5 unapproved names)

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