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Northwest Africa 11560
Basic information Name: Northwest Africa 11560
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11560
Observed fall: No
Year found: 2017
Country: (Northwest Africa)
Mass:help 13.06 kg
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 12 Jan 2018
Writeup from MB 107:

Northwest Africa 11560 (NWA 11560)

(Northwest Africa)

Purchased: 2017 Oct

Classification: HED achondrite (Diogenite)

History: Purchased in Temara, Morocco by Adam Aaronson in October 2017.

Physical characteristics: A single large stone (13060 g) composed predominantly of vitreous yellow-green pyroxene with sparse opaque grains.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Protogranular aggregate (mean grainsize 0.9 mm) of predominantly orthopyroxene plus minor chromite and rare olivine. Minor calcite accompanied by iron hydroxide occurs along grain boundaries.

Geochemistry: Orthopyroxene (Fs22.7-23.5Wo1.5-2.0, FeO/MnO = 28-30, N = 3), olivine (Fa26.2-26.3, FeO/MnO = 44-46, N = 2).

Classification: Diogenite.

Specimens: 20.2 g including one polished thin section at UWB; remainder with Aaronson.

Data from:
  Table 0
  Line 0:
Place of purchase:Temara
Date:P 2017 Oct
Mass (g):13060
Shock stage:low
Weathering grade:low
Fayalite (mol%):26.2-26.3
Ferrosilite (mol%):22.7-23.5
Wollastonite (mol%):1.5-2.0
Classifier:A. Irving & P. Carpenter
Type spec mass (g):20.2
Type spec location:UWB
Main mass:Aaronson
Comments:Work name M2036; 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)
Aaronson: Sahara Overland Ltd., Harhora, Temara, 12000, Morocco (private address; updated 3 Jan 2010)
References: Published in Meteoritical Bulletin, no. 107, MAPS 55, 460-462
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     This is 1 of 8037 approved meteorites from (Northwest Africa) (plus 1947 unapproved names)

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