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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
Classification
  history:
Meteoritical Bulletin:  MB 111  (2023)  Lunar (frag. breccia)
Recommended:  Lunar (frag. breccia)    [explanation]

This is 1 of 32 approved meteorites classified as Lunar (frag. breccia).   [show all]
Search for other: Lunar meteorites
Comments: Approved 19 Mar 2022
Writeuphelp
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:
  MB111
  Table 0
  Line 0:
Place of purchase:Mauritania
Date:P 2020
Mass (g):4900
Pieces:1
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
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)
Thompson: Edwin Thompson, 5150 Dawn St., Lake Oswego, OR 97035, United States (private address)
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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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names)
Also see:
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Revision
  history:
  This lists important revisions made to data for this record.

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