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Northwest Africa 13032
Basic information Name: Northwest Africa 13032
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13032
Observed fall: No
Year found: 2019
Country: Algeria
Mass:help 655 g
Classification
  history:
Recommended:  Diogenite-pm    [explanation]

This is 1 of 42 approved meteorites classified as Diogenite-pm.   [show all]
Search for other: Achondrites, Diogenites, and HED achondrites
Comments: Approved 9 Feb 2020
Writeuphelp
Writeup from MB 109:

Northwest Africa 13032 (NWA 13032)

Algeria

Find: 2019 Jun

Classification: HED achondrite (Diogenite, polymict)

History: Found by prospectors in the vicinity of Adrar, Algeria, in June 2019.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Breccia composed of diogenite clasts and related crystalline debris. The predominant mineral phase is othopyroxene (exhibiting undulose extinction and a wide range of compositions); accessory minerals are clinopyroxene, calcic plagioclase, stained troilite and Ti-V-bearing chromite.

Geochemistry: Orthopyroxene (Fs18.3Wo2.0; Fs24.3-25.1Wo1.5-2.5; Fs30.2Wo1.7; FeO/MnO = 29-31; N = 6), clinopyroxene (Fs8.0Wo46.2, FeO/MnO = 20), plagioclase (An87.6Or0.1).

Classification: Diogenite (polymict breccia). The polymict designation reflects the very wide range in orthopyroxene compositions derived from at least three distinct diogenite lithologies.

Specimens: 26 g including one polished thin section and one polished mount at UWB; remainder with anonymous finders.

Data from:
  MB109
  Table 0
  Line 0:
Origin or pseudonym:Adrar
Date:2019 Jun
Mass (g):654.9
Pieces:1
Class:Diogenite-pm
Shock stage:low
Weathering grade:low
Ferrosilite (mol%):18.3; 24.3-25.1; 30.2; 8.0
Wollastonite (mol%):2.0; 1.5-2.5; 1.7; 46.2
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):26
Type spec location:UWB
Main mass:Anonymous
Comments:Work name DL1008; 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. 109, in preparation (2020)
Find references in NASA ADS:
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Geography:

Algeria
Coordinates:Unknown.

Statistics:
     This is 1 of 995 approved meteorites from Algeria (plus 26 unapproved names) (plus 4 impact craters)

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