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Northwest Africa 13117
Basic information Name: Northwest Africa 13117
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13117
Observed fall: No
Year found: 2019
Country: (Northwest Africa)
Mass:help 102.2 g
Classification
  history:
Recommended:  Eucrite-mmict    [explanation]

This is 1 of 233 approved meteorites classified as Eucrite-mmict.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 9 Feb 2020
Writeuphelp
Writeup from MB 109:

Northwest Africa 13117 (NWA 13117)

(Northwest Africa)

Purchased: 2019 Aug

Classification: HED achondrite (Eucrite, monomict)

History: Purchased from a dealer in Zagora, Morocco, in August 2019 by Juan Avil├ęs Poblador on behalf of the Earth Sciences Department at the University of Alicante, Spain.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Monomict breccia composed of subophitic eucrite clasts within a matrix of related crystalline debris. Minerals are exsolved pigeonite, calcic plagioclase, silica polymorph, ilmenite, troilite, chromite and Ni-free metal.

Geochemistry: Orthopyroxene host (Fs59.9-61.9Wo1.7-3.8, FeO/MnO = 32-33, N = 4), clinopyroxene exsolution lamellae (Fs26.0-29.2Wo41.7-44.4, FeO/MnO = 30-32, N = 4), plagioclase (An81.4-88.9Or1.0-0.4, N = 4).

Classification: Eucrite (monomict breccia).

Specimens: 20.4 g including one polished thin section at UWB; remainder in the collection of UAlic.

Data from:
  MB109
  Table 0
  Line 0:
Place of purchase:Zagora
Date:P 2019 Aug
Mass (g):102.2
Pieces:1
Class:Eucrite-mmict
Shock stage:low
Weathering grade:low
Ferrosilite (mol%):59.9-61.9; 26.0-29.2
Wollastonite (mol%):1.7-3.8; 41.7-44.4
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):20.4
Type spec location:UWB
Main mass:UAlic
Comments:Work name JAP19-4; 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)
UAlic: Earth Sciences Department University of Alicante San Vicente del Raspeig, Spain (institutional address; updated 9 Feb 2020)
Catalogs:
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7228 approved meteorites from (Northwest Africa) (plus 1998 unapproved names)

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