Meteoritical Bulletin: Entry for Northwest Africa 13429

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Northwest Africa 13429

Basic information

Name: Northwest Africa 13429
This is an OFFICIAL meteorite name.
Abbreviation: NWA 13429
Observed fall: No
Year found: 2020
Country: (Northwest Africa)
Mass: 2.02 kg

Classification
history:

Meteoritical Bulletin:	MB 109	(2020)	L7
Recommended:			L7 [explanation]

This is 1 of 33 approved meteorites classified as L7. [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)

Comments:

Approved 28 Sep 2020

Writeup

Writeup from MB 109:

Northwest Africa 13429 (NWA 13429)

(Northwest Africa)

Purchased: 2020 Jun

Classification: Ordinary chondrite (L7)

History: Purchased by Didi Baidari in July 2020 from a dealer in Nouakchott, Mauritania.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Metamorphic granoblastic texture. Aggregate of olivine, orthopyroxene, crystalline albitic plagioclase, augite, chromite, troilite and altered kamacite. No chondrules were observed. Some cross-cutting thin, very fine grained shock veinlets (purplish gray in thin section) are present.

Geochemistry: Olivine (Fa_25.6±0.8, range Fa_24.3-26.8, N = 6), low-Ca pyroxene (Fs_21.6±0.9Wo_3.4±1.0, range Fs_20.8-22.2Wo_2.8-5.1, N = 5), augite (Fs_12.5±0.6Wo_36.5±1.9, range Fs_12.1-13.2Wo_38.3-34.5, N = 3).

Classification: Ordinary chondrite (L7).

Specimens: 61.6 g including one polished thin section at UWB; remainder with WangZ.

Data from:
  MB109
  Table 0
  Line 0:

Place of purchase:	Mauritania
Date:	P 2020 Jun
Mass (g):	2020
Pieces:	5
Class:	L7
Shock stage:	S4
Weathering grade:	W2
Fayalite (mol%):	25.6±0.8
Ferrosilite (mol%):	21.6±0.9
Wollastonite (mol%):	3.4±1.0
Classifier:	A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):	61.6
Type spec location:	UWB
Main mass:	WangZ
Comments:	Work name IA-2; 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)
WangZ: Ziyao Wang, Hebei GEO University North Campus, Huai An dong road 127, Shijiazhuang, Hebei Province , China (private address; updated 25 Jun 2021)

Catalogs:

References:

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

Find references in NASA ADS:
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Photos:

Credit	Photos
Photos uploaded by members of the Encyclopedia of Meteorites. (Caution, these are of unknown reliability)
chen wang
Fujun Ren
Qi Lv
Ziyao Wang

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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