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Northwest Africa 8423
Basic information Name: Northwest Africa 8423
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8423
Observed fall: No
Year found: 2014
Country: (Northwest Africa)
Mass:help 242 g
Classification
  history:
Meteoritical Bulletin:  MB 104  (2015)  L/LL3
Recommended:  L/LL3    [explanation]

This is 1 of 31 approved meteorites classified as L/LL3.   [show all]
Search for other: L chondrites, L/LL chondrites, L/LL chondrites (type 3), LL chondrites, Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 31 Dec 2015
Writeuphelp
Writeup from MB 104:

Northwest Africa 8423 (NWA 8423)

(Northwest Africa)

Purchased: 2014 Mar

Classification: Ordinary chondrite (L/LL3)

History: Purchased in Temara, Morocco by Adam Aaronson in March 2014.

Petrography: (A. Irving and S. Kuehner, UWS) Medium-sized (1.4±0.8 mm), very closely packed, well-formed ellipsoidal chondrules are set in a fine grained matrix containing altered metal.

Geochemistry: Olivine, Fa15.0-43.5; Cr2O3 in ferroan olivine = 0.12-0.29 wt.%, mean 0.19±0.06 wt.%, N = 7; orthopyroxene, Fs2.3-16.4Wo0.3-0.4, N = 3; subcalcic augite, Fs9.0-31.1Wo28.5-35.2.

Classification: Ordinary chondrite (L/LL3).

Specimens: 21.9 g including one polished thin section at UWB. The remainder is held by Aaronson.

Data from:
  MB104
  Table 0
  Line 0:
Place of purchase:Temara
Date:P 2014 Mar
Mass (g):242
Pieces:1
Class:L/LL3
Shock stage:S2
Weathering grade:W2
Fayalite (mol%):15.0-43.5
Ferrosilite (mol%):2.3-16.4
Wollastonite (mol%):0.3-0.4
Magnetic suscept.:4.49
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):21.9
Type spec location:UWB
Main mass:A. Aaronson
Comments:M1683; 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)
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)
Catalogs:
References: Published in Meteoritical Bulletin, no. 104, MAPS 52, 2284, Octover 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12930/full
Find references in NASA ADS:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8495 approved meteorites from (Northwest Africa) (plus 1899 unapproved names)

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