Meteoritical Bulletin: Entry for Northwest Africa 15372

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Northwest Africa 15372

Basic information

Name: Northwest Africa 15372
This is an OFFICIAL meteorite name.
Abbreviation: NWA 15372
Observed fall: No
Year found: 2022
Country: Northwest Africa
Mass: 264 g

Classification
history:

Recommended:

Acapulcoite [explanation]

This is 1 of 88 approved meteorites classified as Acapulcoite. [show all]
Search for other: Acapulcoite-lodranite family, Acapulcoites, and Primitive achondrites

Comments:

Approved 27 Nov 2022

Writeup

help

Writeup from MB 111:

Northwest Africa 15372 (NWA 15372)

Northwest Africa

Purchased: 2022

Classification: Primitive achondrite (Acapulcoite)

History: Purchased by Mark Lyon from a Moroccan meteorite dealer in 2022.

Physical characteristics: Single stone mostly covered with smooth, dark-colored fusion crust. There are also patches of orange-brown colored patina.

Petrography: (A. Ross and C. Agee, UNM) Recrystallized granoblastic texture with triple junctions between olivine, pyroxenes, and plagioclase. Most silicate grains are in the size range 200-300 microns. Kamacite makes up approximately 5% of this meteorite. Troilite and chromite are ubiquitous minor phases. Vesicular fusion crust is approximately 500 microns thick.

Geochemistry: (A. Ross, UNM) Olivine Fa_11.1±0.1, Fe/Mn=21±1, n=6; low-Ca pyroxene Fs_10.2±0.2Wo_1.6±0.3, Fe/Mn=13±1, n=3; high-Ca pyroxene Fs_4.2±0.1Wo_44.8±0.9, Fe/Mn=9±1, n=3; plagioclase An_12.2±0.1Ab_82.3±0.1, n=4; fusion crust SiO₂=43.2±1.0, TiO₂=0.16±0.02, Cr₂O₃=0.29±0.01, Al₂O₃=2.6±0.1, FeO=22.4±1.8, MnO=0.39±0.02, MgO=25.0±0.9, CaO=3.3±0.3, NiO=0.40±0.25, Na₂O=0.88±0.10, K₂O=0.11±0.01 (all wt%), n=3.

Classification: Primitive achondrite (Acapulcoite)

Specimens: 20.5 g on deposit at UNM, Mark Lyon holds the main mass.

Data from:
  MB111
  Table 0
  Line 0:

Place of purchase:	Morocco
Date:	P 2022
Mass (g):	264
Pieces:	1
Class:	Acapulcoite
Shock stage:	low
Weathering grade:	low
Fayalite (mol%):	11.1±0.1
Ferrosilite (mol%):	10.2±0.2, 4.2±0.1
Wollastonite (mol%):	1.6±0.3, 44.8±0.9
Classifier:	C. Agee, UNM
Type spec mass (g):	20.5
Type spec location:	UNM
Main mass:	Mark Lyon
Comments:	field name HN-2032; submitted by C. Agee

Institutions
and collections

UNM: Institute of Meteoritics MSC03 2050 University of New Mexico Albuquerque NM 87131-1126 USA, United States; Website (institutional address; updated 12 Feb 2015)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 111, in preparation (2022)

Find references in NASA ADS:
Find references in Google Scholar:

Geography:

Coordinates:

Unknown.

Statistics:
This is the only approved meteorite from Northwest Africa

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