Meteoritical Bulletin: Entry for Northwest Africa 15031

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Northwest Africa 15031

Basic information

Name: Northwest Africa 15031
This is an OFFICIAL meteorite name.
Abbreviation: NWA 15031
Observed fall: No
Year found: 2022
Country: (Northwest Africa)
Mass: 22.5 g

Classification
history:

Meteoritical Bulletin:	MB 111	(2023)	Lodranite
Recommended:			Lodranite [explanation]

This is 1 of 93 approved meteorites classified as Lodranite. [show all]
Search for other: Acapulcoite-lodranite family, Lodranites, and Primitive achondrites

Comments:

Approved 6 Aug 2022

Writeup

Writeup from MB 111:

Northwest Africa 15031 (NWA 15031)

(Northwest Africa)

Purchased: 2022 Mar

Classification: Primitive achondrite (Lodranite)

History: Purchased by Ziyao Wang in March 2022 from a dealer in Agadir, Morocco.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Relatively coarse grained protogranular aggregate (grainsizes up to ~1.2 mm) composed of predominantly olivine and diopside with subordinate ferroan enstatite and accessory kamacite and chromite (Ti-free and V-bearing).

Geochemistry: Olivine (Fa_10.6-11.0, FeO/MnO = 23-24, N = 4), enstatite (Fs_9.6±0.0Wo_1.3-1.5, FeO/MnO = 13-14, N = 3), diopside (Fs_3.2-3.9Wo_45.6-45.2, FeO/MnO = 7-9, N = 3), kamacite (Ni 6.9 wt.%).

Classification: Lodranite.

Specimens: 4.9 g in the form of a polished endcut at UWB; remainder with WangZ.

Data from:
  MB111
  Table 0
  Line 0:

Place of purchase:	Agadir
Date:	P 2022 Mar
Mass (g):	22.5
Pieces:	1
Class:	Lodranite
Shock stage:	low
Weathering grade:	low
Fayalite (mol%):	10.6-11.0
Ferrosilite (mol%):	3.2-3.9; 9.6±0.0
Wollastonite (mol%):	45.2-45.6; 1.3-1.5
Classifier:	A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):	4.9
Type spec location:	UWB
Main mass:	WangZ
Comments:	Work name WZY-104; 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 Gattacceca J., McCubbin F. M., Grossman J. N., Schrader D. L., Chabot N. L., D’Orazio M., Goodrich C., Greshake A., Gross J., Joy K. H., Komatsu M. and Miao B. (2023) The Meteoritical Bulletin, No. 111. Meteoritics & Planetary Science 58, 901–904. ?

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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 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names)

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Revision
history:

This lists important revisions made to data for this record.

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