Meteoritical Bulletin: Entry for Northwest Africa 14142

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Northwest Africa 14142

Basic information

Name: Northwest Africa 14142
This is an OFFICIAL meteorite name.
Abbreviation: NWA 14142
Observed fall: No
Year found: 2020
Country: (Northwest Africa)
Mass: 480 g

Classification
history:

Meteoritical Bulletin:	MB 110	(2022)	Eucrite-unbr
Recommended:			Eucrite-unbr [explanation]

This is 1 of 136 approved meteorites classified as Eucrite-unbr. [show all]
Search for other: Achondrites, Eucrites, and HED achondrites

Comments:

Approved 1 Aug 2021

Writeup

Writeup from MB 110:

Northwest Africa 14142 (NWA 14142)

(Northwest Africa)

Purchased: 2020 Jun

Classification: HED achondrite (Eucrite, unbrecciated)

History: Purchased in Agadir, Morocco by Aziz Habibi in June 2020.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Ophitic texture. Composed predominantly of exsolved pigeonite grains (up to 2 mm) and smaller laths (up to 1 mm) of calcic plagioclase with accessory silica polymorph, ilmenite, Ti-Al chromite, troilite and rare zircon. Some veinlets of secondary calcite are present.

Geochemistry: Pigeonite host (Fs_59.8-60.8Wo_5.2-5.8, FeO/MnO = 30-31, N = 5), augite exsolution lamellae (Fs_28.4-29.4Wo_42.3-41.9, FeO/MnO = 30-35, N = 5), plagioclase (An_79.5-91.4Or_1.3-0.3, N = 4).

Classification: Eucrite (unbrecciated, ophitic).

Specimens: 20.7 g including one polished thin section at UWB; remainder with Mr. A. Habibi.

Data from:
  MB110
  Table 0
  Line 0:

Place of purchase:	Agadir
Date:	P 2020 Jun
Mass (g):	480
Pieces:	1
Class:	Eucrite-unbr
Shock stage:	low
Weathering grade:	low
Ferrosilite (mol%):	59.8-60.8; 28.4-29.4
Wollastonite (mol%):	5.2-5.8; 41.9-42.4
Classifier:	A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):	20.7
Type spec location:	UWB
Main mass:	A. Habibi
Comments:	Work name AH 1021; 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)

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:

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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