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Northwest Africa 8363
Basic information Name: Northwest Africa 8363
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8363
Observed fall: No
Year found: 2013
Country: (Northwest Africa)
Mass:help 478 g
Meteoritical Bulletin:  MB 104  (2015)  L-melt rock
Recommended:  L-melt rock    [explanation]

This is 1 of 46 approved meteorites classified as L-melt rock.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Melted chondrites, Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 22 Feb 2015
Writeup from MB 104:

Northwest Africa 8363 (NWA 8363)

(Northwest Africa)

Purchased: 2013 Dec

Classification: Ordinary chondrite (L, melt rock)

History: Purchased by John Higgins in December 2013 from a dealer in Guelmin, Morocco.

Petrography: (A. Irving and S. Kuehner, UWS) This specimen consists almost entirely of fine, lath-shaped silicate grains (i.e., a melt texture) with ragged and wispy grains of melted metal; hence S6. Fine-grained aggregate of lath-shaped grains of olivine, orthopyroxene, clinopyroxene sodic plagioclase, chromite, merrillite, and troilite, plus ragged shred-like grains of kamacite and primary pores. Rare objects that may be relict chondrules are present in places.

Geochemistry: Olivine (Fa24.6-25.2, N = 3), orthopyroxene (Fs19.8-20.7Wo1.2-2.5, N = 3), clinopyroxene (Fs7.3-7.7Wo44.8-44.7).

Classification: Ordinary chondrite (L melt rock).

Specimens: 29 g including one polished thick section at UWB. The remainder is held by J. Higgins.

Data from:
  Table 0
  Line 0:
Place of purchase:Guelmin
Date:P 2013 Dec
Mass (g):478
Class:L-melt rock
Shock stage:S6
Weathering grade:W0
Fayalite (mol%):24.6-25.2
Ferrosilite (mol%):19.8-20.7
Wollastonite (mol%):1.2-2.5
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):29
Type spec location:UWB
Main mass:J. Higgins
Comments:JH14-2; 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)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
References: Published in Meteoritical Bulletin, no. 104, MAPS 52, 2284, Octover 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12930/full
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     This is 1 of 8904 approved meteorites from (Northwest Africa) (plus 1871 unapproved names)

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