Meteoritical Bulletin: Entry for Northwest Africa 14486

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Northwest Africa 14486

Basic information

Name: Northwest Africa 14486
This is an OFFICIAL meteorite name.
Abbreviation: NWA 14486
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass: 73 g

Classification
history:

Recommended:

LL3 [explanation]

This is 1 of 452 approved meteorites classified as LL3. [show all]
Search for other: LL chondrites, LL chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)

Comments:

Approved 23 Nov 2021

Writeup

Writeup from MB 110:

Northwest Africa 14486 (NWA 14486)

(Northwest Africa)

Purchased: 2021 Jul

Classification: Ordinary chondrite (LL3)

History: Purchased by Shun-Chung Yang in July 2021 from a dealer in Guelmim, Morocco.

Petrography: (A. Irving, UWS and J. Boesenberg, Brown U.) Fairly closely packed, well-formed chondrules (apparent diameter 1010 ± 470 µm, N = 25) containing devitrified glass are set in a fine grained matrix containing altered kamacite, taenite and chromite.

Geochemistry: Olivine (Fa_31.3±27.8, range Fa_6.3-91.8, N = 7; Cr₂O₃ in ferroan olivine 0.01-0.25 wt.%, mean 0.07 wt.%, sd 0.10 wt.%, N = 5), low-Ca pyroxene (Fs_12.1±7.9Wo_1.8±1.2, range Fs_1.8-20.1Wo_0.6-3.2, N = 6), pigeonite (Fs_19.4Wo_6.8), diopside (Fs_1.2Wo_43.3). Magnetic susceptibility log χ (× 10^-9 m³/kg) = 3.84.

Classification: Ordinary chondrite (LL3).

Specimens: 15.0 g including one polished thin section at UWB; remainder with Mr. S.-C. Yang.

Data from:
  MB110
  Table 0
  Line 0:

Place of purchase:	Guelmim
Date:	P 2021 Jul
Mass (g):	73
Pieces:	1
Class:	LL3
Shock stage:	S2
Weathering grade:	W2
Fayalite (mol%):	31.3±27.8
Ferrosilite (mol%):	12.1±7.9
Wollastonite (mol%):	1.8±1.2
Magnetic suscept.:	3.84
Classifier:	A. Irving, UWS, and J. Boesenberg, Brown U.
Type spec mass (g):	15.0
Type spec location:	UWB
Main mass:	S.-C. Yang
Comments:	Work name SCY-44; 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)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)

Catalogs:

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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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9111 approved meteorites from (Northwest Africa) (plus 1873 unapproved names)

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