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Northwest Africa 452
Basic information Name: Northwest Africa 452
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 452
Observed fall: No
Year found: 2003
Country: (Northwest Africa)
Mass:help 373 g
Classification
  history:
Meteoritical Bulletin:  MB 107  (2018)  H4
Recommended:  H4    [explanation]

This is 1 of 6313 approved meteorites (plus 2 unapproved names) classified as H4.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 20 Oct 2018
Writeuphelp
Writeup from MB 107:

Northwest Africa 452 (NWA 452)

(Northwest Africa)

Purchased: 2003

Classification: Ordinary chondrite (H4)

Petrography: A few metal grains contain some small, irregular grains of troilite. Chondrules are well defined. Olivine exhbits sharp optical extinction. A few chondrules are surrounded by thin rings of troilite. About 75% of the metal grains have been weathered to form oxides.

Data from:
  MB107
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2003
Mass (g):373
Pieces:1
Class:H4
Shock stage:S1
Weathering grade:W3
Fayalite (mol%):17.8
Classifier:A. Rubin, UCLA
Type spec mass (g):21.94
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:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8138 approved meteorites from (Northwest Africa) (plus 1941 unapproved names)

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