Meteoritical Bulletin: Entry for Northwest Africa 14189

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Northwest Africa 14189

Basic information

Name: Northwest Africa 14189
This is an OFFICIAL meteorite name.
Abbreviation: NWA 14189
Observed fall: No
Year found: 2021
Country: Niger
Mass: 397 g

Classification
history:

Meteoritical Bulletin:	MB 110	(2022)	LL4
Recommended:			LL4 [explanation]

This is 1 of 396 approved meteorites classified as LL4. [show all]
Search for other: LL chondrites, LL chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)

Comments:

Approved 20 Dec 2021

Writeup

Writeup from MB 110:

Northwest Africa 14189 (NWA 14189)

Niger

Purchased: 2021 Jan

Classification: Ordinary chondrite (LL4)

History: Purchased by Mbark Arjdal in January 2021 from an Algerian dealer.

Petrography: (A. Irving, UWS and J. Boesenberg, BrownU) Well-formed chondrules containing devitrified glass are set in a matrix containing troilite, stained kamacite, pigeonite, subcalcic augite, chromite and chlorapatite.

Geochemistry: Olivine (Fa_28.2±0.4, range Fa_27.6-28.7, N = 6), low-Ca pyroxene (Fs_21.5±0.6Wo_1.9±1.9, range Fs_20.6-21.8Wo_0.5-4.8, N = 4), pigeonite (Fs₁₇,2Wo_8.1), subcalcic augite (Fs_11.5Wo_29.2).

Classification: Ordinary chondrite (LL4).

Specimens: 42.5 g including one polished thin section at UWB; remainder with Mr. M. Arjdal.

Data from:
  MB110
  Table 0
  Line 0:

Place of purchase:	Niger
Date:	P 2021 Jan
Mass (g):	397
Pieces:	1
Class:	LL4
Shock stage:	S2
Weathering grade:	W1
Fayalite (mol%):	28.2±0.4
Ferrosilite (mol%):	21.5±0.6
Wollastonite (mol%):	1.9±1.9
Classifier:	A. Irving, UWS, and J. Boesenberg, BrownU
Type spec mass (g):	42.5
Type spec location:	UWB
Main mass:	M. Arjdal
Comments:	Work name Arj H25; 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, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023)
BrownU: Joseph Boesenberg Brown University Dept of Earth, Environmental and Planetary Sciences (DEEPS) 324 Brook Street Providence, RI 02912 , United States (institutional address; updated 4 Jan 2024)

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:

Niger

Coordinates:

Unknown.

Statistics:
This is 1 of 120 approved meteorites from Niger (plus 4 unapproved names)

Also see:

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Revision
history:

This lists important revisions made to data for this record.

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