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Northwest Africa 14687
Basic information Name: Northwest Africa 14687
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14687
Observed fall: No
Year found: 2020
Country: (Northwest Africa)
Mass:help 4.9 kg
Recommended:  Lunar (frag. breccia)    [explanation]

This is 1 of 20 approved meteorites classified as Lunar (frag. breccia).   [show all]
Search for other: Lunar meteorites
Comments: Approved 19 Mar 2022
Writeup from MB 111:

Northwest Africa 14687 (NWA 14687)

(Northwest Africa)

Purchased: 2020

Classification: Lunar meteorite (frag. breccia)

History: Purchased September, 2021 by Edwin Thompson from anonymous dealer in September of 2021.

Physical characteristics: A single grey-black stone. Saw cut fragments taken from the main mass reveal an interior with many rounded and irregular shaped clasts.

Petrography: (A. Ross, UNM; D. Dickens, NMMS; C. Agee, UNM) This meteorite is a clast-rich polymict breccia with diverse lithic fragments embedded in a fine-grained moderately vesiculated groundmass. Fragmental clasts sizes range from <0.1-10 mm and are primarily basaltic. Kamacite and ilmenite are present. This meteorite is shocked with some impact melt textures present.

Geochemistry: (A. Ross, UNM) Olivine Fa24.9±5.1, Fe/Mn=90±7, n=10; pigeonite Fs20.5±1.6Wo11.0±3.8, Fe/Mn=50±4, n=9; high Ca pyroxene Fs6.1Wo42.0, Fe/Mn=39 n=1; plagioclase An96.5±0.7Ab3.3±0.7Or0.2±0.1, n=6

Classification: Lunar Fragmental Breccia

Specimens: 20.3 g including a probe mount on deposit at UNM, Bryce Rhodes holds the main mass.

Data from:
  Table 0
  Line 0:
Place of purchase:Mauritania
Date:P 2020
Mass (g):4900
Class:Lunar (frag. breccia)
Shock stage:high
Weathering grade:moderate
Fayalite (mol%):24.9±5.1
Ferrosilite (mol%):20.5±1.6,6.1
Wollastonite (mol%):11.0±3.8,42.0
Classifier:C. Agee, UNM; D. Dickens, NMMS
Type spec mass (g):20.3
Type spec location:UNM
Main mass:Bryce Rhodes
Comments:Field name DD-83 / ET01; submitted by D. Dickens
   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)
Thompson: Edwin Thompson, 5150 Dawn St., Lake Oswego, OR 97035, United States (private address)
References: Published in Meteoritical Bulletin, no. 111, in preparation (2022)
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     This is 1 of 8559 approved meteorites from (Northwest Africa) (plus 1896 unapproved names)

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