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Northwest Africa 14685
Basic information Name: Northwest Africa 14685
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14685
Observed fall: No
Year found: 2020
Country: (Northwest Africa)
Mass:help 8 kg
Classification
  history:
Meteoritical Bulletin:  MB 111  (2023)  Lunar (frag. breccia)
Recommended:  Lunar (frag. breccia)    [explanation]

This is 1 of 33 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 14685 (NWA 14685)

(Northwest Africa)

Purchased: 2020

Classification: Lunar meteorite (frag. breccia)

History: Purchased January, 2020 by Mark Lyon from a northwest African dealer

Physical characteristics: Three identical stones, cut surface reveals a fragmental breccia set in a dark-gray ground mass.

Petrography: (A. Ross, UNM; D. Dickens, NMMS; C. Agee, UNM) This meteorite is a clast-rich polymict breccia with lithic fragments embedded in a fine-grained moderately vesiculated groundmass. Fragmental clasts sizes range from <0.1-6 mm and are primarily basaltic. Kamacite, Cr-spinel, silica, troilite, and ilmenite are present. This meteorite is shocked with some impact melt textures present.

Geochemistry: (A. Ross, UNM) Olivine Fa49.0±17.5, Fe/Mn=93±5, n=6; pigeonite Fs25.5±4.7Wo8.6±1.8, Fe/Mn=51±4, n=3; high-Ca pyroxene Fs31.8±27.2Wo42.6±0.3, Fe/Mn=62±26 n=2; plagioclase An95.1±1.6Ab4.7±1.6Or0.2±0.1, n=4

Classification: Lunar Fragmental Breccia

Specimens: 20 g including a probe mount on deposit at UNM, Mark Lyon holds the main mass.

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:Algeria
Date:P 2020
Mass (g):8 kg
Pieces:3
Class:Lunar (frag. breccia)
Shock stage:high
Weathering grade:moderate
Fayalite (mol%):49.0±17.5
Ferrosilite (mol%):25.5±4.7,31.8±27.2
Wollastonite (mol%):8.6±1.8, 42.6±0.3
Classifier:C. Agee, UNM; D. Dickens, NMMS
Type spec mass (g):20
Type spec location:UNM
Main mass:Mark Lyon
Comments:Field Name ML-18; 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)
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:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Andreas Möller   
Ryan Upchurch   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9710 approved meteorites from (Northwest Africa) (plus 1853 unapproved names)
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Revision
  history:
  This lists important revisions made to data for this record.

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