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Northwest Africa 8273
Basic information Name: Northwest Africa 8273
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8273
Observed fall: No
Year found: 2013
Country: Morocco
Mass:help 270 g
Classification
  history:
Meteoritical Bulletin:  MB 103  (2014)  LL5
Recommended:  LL5    [explanation]

This is 1 of 3148 approved meteorites classified as LL5.   [show all]
Search for other: LL chondrites, LL chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 20 Feb 2014
Writeuphelp
Writeup from MB 103:

Northwest Africa 8273 (NWA 8273)

Morocco

Purchased: Dec 2013

Classification: Ordinary chondrite (LL5)

Classification: Although the sample has lower Fs than one would expect for LL, the rock has olivine well within the LL range, and the mean chondrule diameter is about 600 μm, putting it in the LL range and outside the range of L chondrule sizes. Lack of polysynthetically twinned low-Ca pyroxene grains in chondrules and relatively small plagiocalse grains is consistent with petrologic type 5.

Data from:
  MB103
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P Dec 2013
Mass (g):270
Pieces:1
Class:LL5
Shock stage:S3
Weathering grade:W3
Fayalite (mol%):27.4±1.2 (n=10)
Ferrosilite (mol%):20.0 (n=10)
Wollastonite (mol%):0.7
Classifier:A. Rubin, UCLA
Type spec mass (g):25.7
Type spec location:UCLA
Main mass:Aras Jonikas
Comments:AJ13-10; submitted by Aras Jonikas
Institutions
   and collections
UCLA: Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90095-1567, United States (institutional address; updated 17 Oct 2011)
Catalogs:
References: Published in Meteoritical Bulletin, no. 103, MAPS 52, 1014, May 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12888/full
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Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1460 approved meteorites from Morocco (plus 21 unapproved names) (plus 1 impact crater)

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