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Northwest Africa 14358
Basic information Name: Northwest Africa 14358
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14358
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 300 g
Meteoritical Bulletin:  MB 110  (2022)  Lunar (Feldsp. Breccia)
Recommended:  Lunar (Feldsp. Breccia)    [explanation]

This is 1 of 334 approved meteorites classified as Lunar (Feldsp. Breccia).   [show all]
Search for other: Lunar meteorites
Comments: Approved 11 Nov 2021
Writeup from MB 110:

Northwest Africa 14358 (NWA 14358)

(Northwest Africa)

Purchased: 2021

Classification: Lunar meteorite (feldspathic breccia)

History: Purchased by Sean Tutorow a meteorite dealer in Morocco, February 2021.

Physical characteristics: Dark, shiny, irregular exterior, sandblasted, fusion crust absent, scattered light colored clasts also visible.

Petrography: (C. Agee and A. Ross, UNM) Reflected light microscopy shows numerous olivine and pyroxene fragments set in a feldspathic dominated groundmass. Some olivine’s show compositional zoning and some pyroxenes show exsolution lamellae. Electron microprobe analyses show the ubiquitous presence of low-Ni Fe-metal, troilite, magnetite, chromite, ilmenite, and barite.

Geochemistry: (A. Ross, UNM) Olivine Fa6.0±9.4, Fe/Mn=91±7, n=6; pigeonite Fs29.1±8.4Wo6.5±3.8, Fe/Mn=55±4, n=4; augite Fs26.8±16.7Wo30.5±14.2, Fe/Mn=50±6, n=2; plagioclase An95.9±0.3, n=4.

Classification: Lunar, feldspathic breccia

Specimens: 21.27 g including a probe mount on deposit at UNM, Sean Tutorow holds the main mass.

Data from:
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2021
Mass (g):299.98
Class:Lunar (Feldsp. Breccia)
Shock stage:high
Weathering grade:moderate
Fayalite (mol%):26.0±9.4
Ferrosilite (mol%):29.1±8.4, 26.8±16.7
Wollastonite (mol%):6.5±3.8, 30.5±14.2
Classifier:C. Agee, UNM
Type spec mass (g):21.27
Type spec location:UNM
Main mass:Sean Tutorow
Comments:Field name G731; submitted by C. Agee, UNM
   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)
References: Published in Gattacceca J., McCubbin F.M., Grossman J., Bouvier A., Chabot N.L., D'Orazio M., Goodrich C., Greshake A., Gross J., Komatsu M., Miao B., and Schrader D. (2022) The Meteoritical Bulletin, No. 110. Meteorit. Planet. Sci. 1-4
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     This is 1 of 9570 approved meteorites from (Northwest Africa) (plus 1871 unapproved names)

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