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Northwest Africa 14085
Basic information Name: Northwest Africa 14085
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14085
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 429 g
Recommended:  Eucrite-unbr    [explanation]

This is 1 of 119 approved meteorites classified as Eucrite-unbr.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 6 Jul 2021
Writeup from MB 110:

Northwest Africa 14085 (NWA 14085)

(Northwest Africa)

Purchased: 2021 Apr

Classification: HED achondrite (Eucrite, unbrecciated)

History: Purchased by Habib Naji in April 2021 from an Algerian dealer.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Medium grained, relatively equigranular aggregate (mean grainsize ~500 µm) composed predominantly of exsolved pigeonite (comprised of subequal amounts of exsolved low-Ca and high-Ca exsolution lamellae) and calcic plagioclase together with accessory silica polymorph, Ti-chromite, ilmenite, troilite and Ni-free Fe metal.

Geochemistry: Low-Ca pyroxene exsolution lamellae (Fs61.9-62.1Wo2.1-2.8, FeO/MnO = 30-31, N = 4), augite exsolution lamellae (Fs28.8-29.9Wo41.5-42.1, FeO/MnO = 29-31, N = 4), plagioclase (An89.6-90.0Or0.5-0.4, N = 3).

Classification: Eucrite (unbrecciated, microgabbroic).

Specimens: 21.8 g including one polished thin section at UWB; remainder with Mr. H. Naji.

Data from:
  Table 0
  Line 0:
Place of purchase:Algeria
Date:P 2021 Apr
Mass (g):429
Shock stage:low
Weathering grade:low
Ferrosilite (mol%):61.9-62.1; 28.8-29.9
Wollastonite (mol%):2.1-2.8; 41.5-42.1
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):21.8
Type spec location:UWB
Main mass:H. Naji
Comments:Work name HN 774; submitted by A. Irving
   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)
References: Published in Meteoritical Bulletin, no. 110, in preparation (2021)
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     This is 1 of 8559 approved meteorites from (Northwest Africa) (plus 1896 unapproved names)

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