Meteoritical Bulletin: Entry for Northwest Africa 13448

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Northwest Africa 13448

Basic information

Name: Northwest Africa 13448
This is an OFFICIAL meteorite name.
Abbreviation: NWA 13448
Observed fall: No
Year found: 2017
Country: (Northwest Africa)
Mass: 114.7 g

Classification
history:

Meteoritical Bulletin:	MB 109	(2020)	LL3
Recommended:			LL3 [explanation]

This is 1 of 487 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 10 Oct 2020

Writeup

Writeup from MB 109:

Northwest Africa 13448 (NWA 13448)

(Northwest Africa)

Purchased: 2017 Dec

Classification: Ordinary chondrite (LL3)

History: Purchased by Mbark Arjdal from a meteorite dealer in Algeria in December 2017.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Well-formed unequilibrated chondrules (apparent diameter 970±730 µm, N = 24) are set in a recrystallized matrix containing altered kamacite, taenite and troilite.

Geochemistry: Olivine (Fa_29.3±13.6, range Fa_3.2-41.5, N = 8; Cr₂O₃ in ferroan examples 0.04-0.09 wt.%, mean 0.06±0.02 wt.%, N = 7), low-Ca pyroxene (Fs_11.0±7.4Wo_1.6±2.0, range Fs_1.6-22.3Wo_0.2-4.7, N = 5), augite (Fs_9.3±0.1Wo_40.9±1.4, range Fs_9.2-9.4Wo_39.9-41.9, N = 2).

Classification: Ordinary chondrite (LL3).

Specimens: 22.0 g including one polished thin section at UWB; remainder with Mr. M. Arjdal.

Data from:
  MB109
  Table 0
  Line 0:

Place of purchase:	Algeria
Date:	P 2017 Dec
Mass (g):	114.7
Pieces:	1
Class:	LL3
Shock stage:	S2
Weathering grade:	W2
Fayalite (mol%):	29.3±13.6
Ferrosilite (mol%):	11.0±7.4
Wollastonite (mol%):	1.6±2.0
Magnetic suscept.:	3.95
Classifier:	A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):	22.0
Type spec location:	UWB
Main mass:	M. Arjdal
Comments:	Work name Arj B152; 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 Meteoritical Bulletin, no. 109, in preparation (2020)

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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names)

Also see:

This lists the most popular meteorites among people who looked up this meteorite.

Revision
history:

This lists important revisions made to data for this record.

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