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Northwest Africa 4990
Basic information Name: Northwest Africa 4990
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 4990
Observed fall: No
Year found: 2005
Country: (Northwest Africa)
Mass:help 70 g
Classification
  history:
Meteoritical Bulletin:  MB 93  (2008)  L-melt rock
Recommended:  L-melt rock    [explanation]

This is 1 of 35 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 6 Mar 2008
Data from:
  MB93
  Table 2
  Line 166:
Place of purchase:Morocco
Date:2005
Mass (g):70
Pieces:1
Class:L type impact melt
Shock stage:Melted
Weathering grade:W1
Fayalite (mol%):24.3
Ferrosilite (mol%):20.9
Classifier:A. Greshake, MNB
Type spec mass (g):15.5
Type spec location:MNB
Main mass:Stehlik
Institutions
   and collections
MNB: Museum für Naturkunde, Invalidenstrasse 43, D-10115 Berlin, Germany (institutional address)
Stehlik: Harald Stehlik, 1220 Wien, Austria (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 93, MAPS 43, 571-632 (2008)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6916 approved meteorites from (Northwest Africa) (plus 2027 unapproved names)

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