Meteoritical Bulletin: Entry for Northwest Africa 13911

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Northwest Africa 13911

Basic information

Name: Northwest Africa 13911
This is an OFFICIAL meteorite name.
Abbreviation: NWA 13911
Observed fall: No
Year found: 2020
Country: (Northwest Africa)
Mass: 412 g

Classification
history:

Meteoritical Bulletin:	MB 110	(2022)	L3
Recommended:			L3 [explanation]

This is 1 of 848 approved meteorites (plus 2 unapproved names) classified as L3. [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)

Comments:

Approved 10 Apr 2021

Writeup

help

Writeup from MB 110:

Northwest Africa 13911 (NWA 13911)

(Northwest Africa)

Purchased: 2020 Sep

Classification: Ordinary chondrite (L3)

History: Purchased by Shun-Chung Yang and Juan Chen in September 2020 from a dealer in Tindouf, Algeria.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Well-formed glass-bearing chondrules (apparent diameter 680±340 µm, N = 24) are set in a fine grained matrix containing kamacite, troilite and taenite.

Geochemistry: Olivine (Fa_20.2±11.6, range Fa_0.6-35.3, N = 6; Cr₂O₃ in ferroan olivine 0.05-0.20 wt.%, mean 0.10±0.05 wt.%, N = 9), low-Ca pyroxene (Fs_12.8±10.1Wo_0.6±0.4, range Fs_3.1-24.1Wo_0.2-1.0, N = 4), pigeonite (Fs_11.4Wo_6.1), subcalcic augite(Fs_41.4Wo_24.4), augite (Fs_14.5±6.1Wo_37.3±2.5, range Fs_10.2-18.8Wo_35.5-39.1, N = 2). Magnetic susceptibility log χ (× 10^-9 m³/kg) = 4.69.

Classification: Ordinary chondrite (L3).

Specimens: 27.2 g including one polished thin section at UWB; remainder with Mr. S.-C. Yang and Mr. J. Chen.

Data from:
  MB110
  Table 0
  Line 0:

Place of purchase:	Tindouf
Date:	P 2020 Sep
Mass (g):	412
Pieces:	1
Class:	L3
Shock stage:	S2
Weathering grade:	W2
Fayalite (mol%):	20.2±11.6
Ferrosilite (mol%):	12.8±10.1
Wollastonite (mol%):	0.6±0.4
Magnetic suscept.:	4.69
Classifier:	A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):	27.2
Type spec location:	UWB
Main mass:	S.-C. Yang/J. Chen
Comments:	Work name SCY-14; 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, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023)

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 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names)

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Revision
history:

This lists important revisions made to data for this record.

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