Meteoritical Bulletin: Entry for Northwest Africa 13453

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Northwest Africa 13453

Basic information

Name: Northwest Africa 13453
This is an OFFICIAL meteorite name.
Abbreviation: NWA 13453
Observed fall: No
Year found: 2019
Country: (Northwest Africa)
Mass: 106 g

Classification
history:

Meteoritical Bulletin:	MB 109	(2020)	CK5
Recommended:			CK5 [explanation]

This is 1 of 217 approved meteorites classified as CK5. [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (equilibrated), CK chondrites, CK chondrites (type 4-6), and CV-CK clan chondrites

Comments:

Approved 1 Nov 2020

Writeup

Writeup from MB 109:

Northwest Africa 13453 (NWA 13453)

(Northwest Africa)

Purchased: 2019

Classification: Carbonaceous chondrite (CK5)

History: Purchased by Nicholas Gessler in 2019 from a Moroccan dealer.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Sparse separated, magnetite-bearing chondrules are set in a matrix containing stained Cr-magnetite (some with exsolved chromite and ilmenite lamellae) and calcic plagioclase. No low-Ca pyroxene was found despite a careful search.

Geochemistry: Olivine (Fa_31.9±0.2, range Fa_31.7-32.1, N = 5), augite (Fs_9.2±0.5Wo_47.9±0.8, range Fs_8.8-9.7Wo_47.3-48.8, N = 3), plagioclase (An_46.1Or_2.5; An_87.5Or_0.3; N = 2), magnetite (Cr₂O₃ = 4.9 wt.%, 5.0 wt.%, N = 2).

Classification: Carbonaceous chondrite (CK5).

Specimens: 20.8 g including one polished thin section at UWB; remainder with Mr. N. Gessler.

Data from:
  MB109
  Table 0
  Line 0:

Place of purchase:	Morocco
Date:	P 2019
Mass (g):	106
Pieces:	1
Class:	CK5
Shock stage:	S2
Weathering grade:	low
Fayalite (mol%):	31.9±0.2
Ferrosilite (mol%):	9.2±0.5
Wollastonite (mol%):	47.9±0.8
Classifier:	A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):	20.8
Type spec location:	UWB
Main mass:	N. Gessler
Comments:	Work name M; 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)
Gessler: Nicholas Gessler, 2010 Calgary Lane, Los Angeles, CA 90077, United States (private address; updated 7 Jul 2016)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 109, in preparation (2020)

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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9710 approved meteorites from (Northwest Africa) (plus 1853 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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