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Northwest Africa 14905
Basic information Name: Northwest Africa 14905
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14905
Observed fall: No
Year found: 2021
Country: Algeria
Mass:help 2.93 kg
Classification
  history:
Recommended:  Lunar (frag. breccia)    [explanation]

This is 1 of 19 approved meteorites classified as Lunar (frag. breccia).   [show all]
Search for other: Lunar meteorites
Comments: Approved 9 May 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 14905 (NWA 14905)

Algeria

Find: 2020

Classification: Lunar meteorite (frag. breccia)

History: Reportedly found in the desert west of Fenoghil, Algeria, in 2020. Purchased by Jay Piatek from Cheikh El Fakraoui a meteorite dealer in Morocco in 2021.

Physical characteristics: Four identical appearing pieces found together. Dark colored, irregularly shaped, with smooth sandblasted patina. Saw cut surface shows a very dark groundmass with fine-grained gray and white clasts many of which are angular.

Petrography: (A. Ross, C. Agee, UNM; D. Dickens, NMMS) Electron microprobe analysis indicates a lunar polymict breccia with clasts of minerals and rocklets. Major phases in descending order of modal abundance are plagioclase (57±2%), pyroxene (29±5%), olivine (8±2%). Minor phases Cr-spinel, ilmenite, troilite, merrillite, augite and zirconolite were detected. Zirconolite has REEs detectable with the electron microprobe. Vesicles occur throughout.

Geochemistry: (A. Ross, UNM) Plagioclase An95.4±4.8Ab4.4±4.6, n=6; olivine Fa29.4±17.9, Fe/Mn=87±7, n=12; pigeonite Fs30.5±8.3Wo9.7±6.0, Fe/Mn=57±7, n=11.

Classification: Lunar polymict fragmental breccia

Specimens: 23.6 g on deposit at UNM, Jay Piatek holds the main mass of 2782 g.

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:Morocco
Date:2020
Mass (g):2928
Pieces:4
Class:Lunar (frag. breccia)
Shock stage:high
Weathering grade:moderate
Fayalite (mol%):29.4±17.9
Ferrosilite (mol%):30.5±8.3
Wollastonite (mol%):9.7±6.0
Classifier:C. Agee, UNM
Type spec mass (g):23.6
Type spec location:UNM
Main mass:Jay Piatek
Comments:Fieldname JP-4008; 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:
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Geography:

Algeria
Coordinates:Unknown.

Statistics:
     This is 1 of 1194 approved meteorites from Algeria (plus 28 unapproved names) (plus 4 impact craters)

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