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Northwest Africa 14663
Basic information Name: Northwest Africa 14663
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14663
Observed fall: No
Year found: 2021
Country: Niger
Mass:help 436 g
Classification
  history:
Recommended:  L3    [explanation]

This is 1 of 791 approved meteorites (plus 1 unapproved name) classified as L3.   [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 12 Feb 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 14663 (NWA 14663)

Niger

Purchased: 2021 Mar

Classification: Ordinary chondrite (L3)

History: Found in Niger and purchased by Mbark Arjdal in March 2020 from a local dealer.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Closely-packed, well-formed, unequilibrated glass-bearing chondrules (apparent diameter 1060±630 µm, N = 25) are set in a fine grained matrix containing stained kamacite, taenite and troilite.

Geochemistry: Olivine (Fa19.2±16.0, range Fa1.1-49.7, N = 9; Cr2O3 in ferroan olivine 0.04-0.34 wt.%, mean 0.13±0.10 wt.%, N = 8), low-Ca pyroxene (Fs9.8±7.8Wo1.6±1.6, range Fs2.7-20.8Wo0.3-3.6, N = 4), pigeonite (Fs34.0Wo7.5; Fs34.7Wo17.4; Fs24.6Wo19.5; N = 3), augite (Fs5.8Wo38.0). Magnetic susceptibility log χ (× 10-9 m3/kg) = 4.83.

Classification: Ordinary chondrite (L3).

Specimens: 30.8 g including one large area polished thin section at UWB; remainder with Mr. M. Arjdal.

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:Niger
Date:P 2021 Mar
Mass (g):436
Pieces:1
Class:L3
Shock stage:S2
Weathering grade:W1
Fayalite (mol%):19.2±16.0
Ferrosilite (mol%):9.8±7.8
Wollastonite (mol%):1.6±1.6
Magnetic suscept.:4.83
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):30.8
Type spec location:UWB
Main mass:M. Arjdal
Comments:Work name Arj ZM 535; submitted by A. Irving
Institutions
   and collections
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
WUSL: Washington Univ., One Brookings Drive, St. Louis, MO 63130, United States (institutional address; updated 17 Oct 2011)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
Catalogs:
References: Published in Meteoritical Bulletin, no. 111, in preparation (2022)
Find references in NASA ADS:
Find references in Google Scholar:
Geography:

Niger
Coordinates:Unknown.

Statistics:
     This is 1 of 97 approved meteorites from Niger (plus 5 unapproved names)

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