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Northwest Africa 14403
Basic information Name: Northwest Africa 14403
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14403
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 3 kg
Classification
  history:
Recommended:  Eucrite-mmict    [explanation]

This is 1 of 258 approved meteorites classified as Eucrite-mmict.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 31 Oct 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 14403 (NWA 14403)

(Northwest Africa)

Purchased: 2021

Classification: HED achondrite (Eucrite, monomict)

History: Purchased by Matthew Stream from Ali Hnini and Mostafa Hnini in June 2021.

Physical characteristics: Thirty similar appearing fusion crusted individuals. Brecciated texture is visible on the exterior with dark and light colored clasts.

Petrography: (C. Agee and A. Ross, UNM) Reflected light microscopy and electron microprobe imaging shows that this meteorite is a fragmental breccia of basaltic eucrite with subophitic texture with ~60% pyroxene and ~35% plagioclase. Pyroxenes show exsolution lamellae and have a compositional continuum between low-Ca pyroxene and augite. Accessory phases are silica, ilmenite, troilite, chromite, and zircon.

Geochemistry: (A. Ross, UNM) Pyroxene Fs50.9±14.2Wo19.2±16.0, Fe/Mn=32±1, n=12; plagioclase An87.3±1.9, n=6.

Classification: Achondrite (monomict eucrite)

Specimens: 26.11 g on deposit at UNM, Matthew Stream holds the main mass.

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2021
Mass (g):3000
Pieces:30
Class:Eucrite-mmict
Shock stage:high
Weathering grade:low
Ferrosilite (mol%):50.9±14.2
Wollastonite (mol%):19.2±16.0
Classifier:C. Agee, UNM
Type spec mass (g):26.11
Type spec location:UNM
Main mass:Matthew Stream
Comments:Field name MST-8; submitted by C. Agee, UNM
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. 110, in preparation (2021)
Find references in NASA ADS:
Find references in Google Scholar:
Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Robert Smart   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8390 approved meteorites from (Northwest Africa) (plus 1899 unapproved names)

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