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Northwest Africa 14487
Basic information Name: Northwest Africa 14487
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14487
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 3.2 kg
Classification
  history:
Meteoritical Bulletin:  MB 110  (2022)  Eucrite-br
Recommended:  Eucrite-br    [explanation]

This is 1 of 237 approved meteorites classified as Eucrite-br.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 23 Nov 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 14487 (NWA 14487)

(Northwest Africa)

Purchased: 2021 Jun

Classification: HED achondrite (Eucrite, brecciated)

History: Purchased by Eric Twelker in June 2021 from a dealer in Agadir, Morocco.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Breccia composed predominantly of angular mineral debris from eucrite lithologies accompanied by sparse microgabbroic and fine-grained lithic eucrite clasts in a fine grained matrix. The fine grained lithic eucrite clasts have intergranular textures but range in grainsize from ~100 µm to ~200 µm, and some are plagioclase-phyric. Minerals are exsolved pigeonite, calcic plagioclase, silica polymorph, ilmenite, baddeleyite, troilite and Ni-poor Fe metal.

Geochemistry: Low-Ca pyroxene hosts (Fs65.2-65.9Wo1.7-2.3, FeO/MnO = 32-34, N = 3), augite exsolution lamellae (Fs29.2-33.9Wo42.1-38.6, FeO/MnO = 31-33, N = 4), plagioclase (An88.1-90.2Or0.4-0.3, N = 4).

Classification: Eucrite (breccia).

Specimens: 23.4 g including one polished thin section at UWB; remainder with Twelker.

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Agadir
Date:P 2021 Jun
Mass (g):3200
Pieces:80
Class:Eucrite-br
Shock stage:low
Weathering grade:low
Ferrosilite (mol%):65.2-65.9; 29.2-33.9
Wollastonite (mol%):1.7-2.3; 42.3-38.6
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):23.4
Type spec location:UWB
Main mass:E. Twelker
Comments:Work name ET21-5; 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, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023)
Twelker: Eric Twelker, P.O. Box 844, Port Townsend, WA 98368, United States; Website (private address; updated 1 Dec 2014)
Catalogs:
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
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names)
Also see:
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Revision
  history:
  This lists important revisions made to data for this record.

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