Meteoritical Bulletin: Entry for Northwest Africa 14458

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Northwest Africa 14458

Basic information

Name: Northwest Africa 14458
This is an OFFICIAL meteorite name.
Abbreviation: NWA 14458
Observed fall: No
Year found: 2018
Country: (Northwest Africa)
Mass: 2.34 kg

Classification
history:

Recommended:

Ureilite [explanation]

This is 1 of 604 approved meteorites classified as Ureilite. [show all]
Search for other: Achondrites, Ureilites

Comments:

Approved 13 Nov 2021

Writeup

Writeup from MB 110:

Northwest Africa 14458 (NWA 14458)

(Northwest Africa)

Purchased: 2018 Dec

Classification: Ureilite

History: Purchased by Ziyao Wang in December 2018 from a dealer in Agadir, Morocco.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Protogranular texture (mean grainsize ~1 mm). Composed predominantly of olivine (~80 vol.%) and pigeonite (~20 vol.%) with accessory graphite, kamacite, taenite and troilite. Olivine grains have reduced, more magnesian rims associated with stained, fine grained Fe metal.

Geochemistry: Olivine (cores Fa_19.9-20.3, N = 4; rims Fa_1.6-5.2, N = 4), pigeonite (Fs_17.5-17.6Wo_5.2-5.4, N = 5).

Classification: Ureilite.

Specimens: 44.2 g including one polished thin section at UWB; remainder with WangZ.

Data from:
  MB110
  Table 0
  Line 0:

Place of purchase:	Agadir
Date:	P 2018 Dec
Mass (g):	2336
Pieces:	1
Class:	Ureilite
Shock stage:	low
Weathering grade:	low
Fayalite (mol%):	19.9-20.3; 1.6-5.2
Ferrosilite (mol%):	17.5-17.6
Wollastonite (mol%):	5.2-5.4
Classifier:	A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):	44.2
Type spec location:	UWB
Main mass:	WangZ
Comments:	Work name WZY-54; 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, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
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. 110, in preparation (2021)

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)
Ziyao Wang

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 8390 approved meteorites from (Northwest Africa) (plus 1899 unapproved names)

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