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Northwest Africa 14143
Basic information Name: Northwest Africa 14143
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14143
Observed fall: No
Year found: 2018
Country: Morocco
Mass:help 7.44 kg
Classification
  history:
Recommended:  L5    [explanation]

This is 1 of 7227 approved meteorites (plus 4 unapproved names) classified as L5.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 1 Aug 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 14143 (NWA 14143)

Morocco

Find: 2018 Sep

Classification: Ordinary chondrite (L5)

History: Found in September 2018 near Tan Tan Plage, Morocco, and purchased by John Higgins in September 2020 from a dealer in Ouarzazate, Morocco.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Monomict breccia containing clasts up to 1.5 cm in size. Both the lithic clasts and interclast material consist of sparse chondrules within a recrystallized matrix containing altered kamacite, taenite, sodic plagioclase, merrillite, troilite and rare chlorapatite. Some veinlets of secondary calcite are present.

Geochemistry: Olivine (Fa25.4±0.2, range Fa25.1-25.6, N = 7), low-Ca pyroxene (Fs21.4±0.2Wo1.7±0.2, range Fs21.2-21.6Wo1.4-1.9, N = 4), augite (Fs8.5±0.8Wo44.9±1.2, range Fs7.9-9.0Wo45.7-44.0, N = 2).

Classification: Ordinary chondrite (L5 breccia).

Specimens: 111 g including one polished thin section at UWB; remainder with Mr. J. Higgins.

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Ouarzazate
Date:2018 Sep
Mass (g):7437
Pieces:many
Class:L5
Shock stage:S2
Weathering grade:W2
Fayalite (mol%):25.4±0.2
Ferrosilite (mol%):21.4±0.2
Wollastonite (mol%):1.7±0.2
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):111
Type spec location:UWB
Main mass:J. Higgins
Comments:Work name JH21-2; submitted by A. Irving
Institutions
   and collections
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
WUSL: Washington Univ., One Brookings Drive, St. Louis, MO 63130, United States (institutional address; updated 17 Oct 2011)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
Catalogs:
References: Published in Meteoritical Bulletin, no. 110, in preparation (2021)
Find references in NASA ADS:
Find references in Google Scholar:
Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1680 approved meteorites from Morocco (plus 25 unapproved names) (plus 1 impact crater)

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