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Northwest Africa 454
Basic information Name: Northwest Africa 454
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 454
Observed fall: No
Year found: 2003
Country: (Northwest Africa)
Mass:help 168 g
Classification
  history:
Meteoritical Bulletin:  MB 107  (2018)  L6
Recommended:  L6    [explanation]

This is 1 of 12058 approved meteorites (plus 6 unapproved names) classified as L6.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 20 Oct 2018
Writeuphelp
Writeup from MB 107:

Northwest Africa 454 (NWA 454)

(Northwest Africa)

Purchased: 2003

Classification: Ordinary chondrite (L6)

Petrography: Some metal grains are elongated. A few chondrules are surrounded by troilite-rich rims. Some metal grains contain small, irregular grains of troilite. The troilite is polycrystalline. Chondrules are recrystallized and poorly defined. Some plagiolcase grains are 50-80 ┬Ám in size. Some olivine grains exhibit weak mosaic extinction.

Data from:
  MB107
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2003
Mass (g):168
Pieces:1
Class:L6
Shock stage:S4
Weathering grade:W1
Fayalite (mol%):24.2
Classifier:A. Rubin, UCLA
Type spec mass (g):22.45
Type spec location:UCLA
Main mass:Nick Gessler
Comments:Submitted by Simone de Leuw
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)
Gessler: Nicholas Gessler, 2010 Calgary Lane, Los Angeles, CA 90077, United States (private address; updated 7 Jul 2016)
Catalogs:
References: Published in Meteoritical Bulletin, no. 107, MAPS 55, 460-462
Find references in NASA ADS:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8402 approved meteorites from (Northwest Africa) (plus 1899 unapproved names)

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