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Northwest Africa 14980
Basic information Name: Northwest Africa 14980
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14980
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 196 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 18 May 2022
Writeup from MB 111:

Northwest Africa 14980 (NWA 14980)

(Northwest Africa)

Purchased: 2021 Aug

Classification: HED achondrite (Eucrite, unbrecciated)

History: Purchased by Jason Whitcomb in August 2021 from an Algerian dealer.

Petrography: (A. Irving, UWS and J. Boesenberg, BrownU) This specimen has a coarse gabbroic texture (mean grainsize ~3 mm) and evidence of experiencing moderate shock. Composed of relatively coarse polygranular aggregates of low-Ca pyroxene (some of which is pigeonite with fine augite lamellae) and polycrystalline grains of calcic plagioclase together with accessory chromite, troilite, ilmenite and rare kamacite. Some black shock melt veinlets and veinlets of secondary calcite are present.

Geochemistry: Low-Ca pyroxene (Fs45.9-47.4Wo3.7-5.1, FeO/MnO = 30-31, N = 4), pigeonite (Fs41.8-43.5Wo11.1-8.0, FeO/MnO = 29-32, N = 3), plagioclase (An85.5-88.6Or0.6-0.3, N = 6).

Classification: Eucrite (unbrecciated, gabbroic, moderately shocked).

Specimens: 20.7 g including one polished thin section at PSF; remainder with Mr. J. Whitcomb.

Data from:
  Table 0
  Line 0:
Place of purchase:Algeria
Date:P 2021 Aug
Mass (g):196
Shock stage:moderate
Weathering grade:low
Ferrosilite (mol%):45.9-41.4; 41.8-43.5
Wollastonite (mol%):3.7-5.1; 11.1-8.0
Classifier:A. Irving, UWS, and J. Boesenberg, BrownU
Type spec mass (g):20.7
Type spec location:PSF
Main mass:J. Whitcomb
Comments:Work name JW-81; submitted by A. Irving
   and collections
PSF: Planetary Studies Foundation,10 Winterwood Lane, Unit B, Galena, Illinois 61036-9283, United States; Website (institutional address; updated 1 Dec 2011)
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
BrownU: Brown University Providence, RI 02912, United States (institutional address; updated 7 Sep 2019)
References: Published in Meteoritical Bulletin, no. 111, in preparation (2022)
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     This is 1 of 8559 approved meteorites from (Northwest Africa) (plus 1896 unapproved names)

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