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Northwest Africa 12267
Basic information Name: Northwest Africa 12267
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12267
Observed fall: No
Year found: 2018
Country: (Northwest Africa)
Mass:help 86 g
Meteoritical Bulletin:  MB 107  (2018)  Diogenite
Recommended:  Diogenite    [explanation]

This is 1 of 481 approved meteorites classified as Diogenite.   [show all]
Search for other: Achondrites, Diogenites, and HED achondrites
Comments: Approved 11 Dec 2018
Writeup from MB 107:

Northwest Africa 12267 (NWA 12267)

(Northwest Africa)

Purchased: 2018 Jun

Classification: HED achondrite (Diogenite)

History: Purchased by Craig Zlimen in June 2018 from a Moroccan dealer.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Breccia composed predominantly of larger and smaller angular clasts of orthopyroxene with accessory chromite, Ti-chromite, calcic plagioclase, troilite and rare olivine (as inclusions in orthopyroxene). Some cross-cutting veinlets of goethite are present.

Geochemistry: Orthopyroxene (Fs22.8-28.5Wo2.9-1.3, FeO/MnO = 27-31, N = 3), plagioclase (An83.4Or1.1; An96.3Or0.1; N = 2), olivine (Fa22.6, FeO/MnO = 49).

Classification: Diogenite (breccia).

Specimens: 18.1 g including one polished thin section at UWB; remainder with Mr. C. Zlimen.

Data from:
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2018 Jun
Mass (g):86
Shock stage:low
Weathering grade:low to m
Fayalite (mol%):22.6
Ferrosilite (mol%):22.8-28.5
Wollastonite (mol%):2.9-1.3
Classifier:A. Irving and P. Carpenter, UWS
Type spec mass (g):18.1
Type spec location:UWB
Main mass:C. Zlimen
Comments:Work name ZLI02; 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. 107, MAPS 55, 460-462
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     This is 1 of 8025 approved meteorites from (Northwest Africa) (plus 1951 unapproved names)

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