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Northwest Africa 4100
Basic information Name: Northwest Africa 4100
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 4100
Observed fall: No
Year found: 2004
Country: (Northwest Africa)
Mass:help 245 g
Classification
  history:
Meteoritical Bulletin:  MB 104  (2015)  L-melt breccia
Recommended:  L-melt breccia    [explanation]

This is 1 of 28 approved meteorites classified as L-melt breccia.   [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
Data from:
  MB104
  Table 0
  Line 0:
Place of purchase:Erfoud, Morocco
Date:P 2004
Mass (g):245
Pieces:1
Class:L-melt breccia
Shock stage:S4
Weathering grade:W1
Fayalite (mol%):23.1
Ferrosilite (mol%):19.6
Classifier:A. Greshake, MNB
Type spec mass (g):25.2
Type spec location:MNB
Main mass:anonymous
Comments:A breccia of rare L6 type clasts and abundant melted and recrystallized regions. The latter typically contain FeNi metal and sulfide spherules. Plagioclase grains size in L6 fragments is ~70 um.; submitted by Ansgar Greshake
Institutions
   and collections
MNB: Museum für Naturkunde, Invalidenstrasse 43, D-10115 Berlin, Germany (institutional address)
Catalogs:
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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Photos:
CreditPhotos
Photos from the Encyclopedia of Meteorites:
Austromet   
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Gerald Armstrong   
Rodrigo Guerra   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6968 approved meteorites from (Northwest Africa) (plus 2012 unapproved names)

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