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Northwest Africa 4644
Basic information Name: Northwest Africa 4644
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 4644
Observed fall: No
Year found: 2006
Country: (Northwest Africa)
Mass:help 159.1 g
Classification
  history:
Meteoritical Bulletin:  MB 100  (2012)  L3-6
Recommended:  L3-6    [explanation]

This is 1 of 51 approved meteorites classified as L3-6.   [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 11 Jun 2012
Writeuphelp
Writeup from MB 100:

Northwest Africa 4644 (NWA 4644)

Northwest Africa

Purchased: 2006

Classification: Ordinary chondrite (L3-6)

History: The meteorite was found by an anonymous finder in Northwest Africa and bought by the main mass holder in Erfoud, Morocco.

Physical characteristics: One brownish fragment of 159.1 g without fusion crust.

Petrography: The sample is a brecciated meteorite with light-gray, brownish, and almost black angular clasts of petrological types 3 to 6. Mean chondrule size (~0.6 mm) and low metal content consistent with L type.

Geochemistry: Olivine Fa1.3-29.7; pyroxene Fs6.2-18.2.

Classification: Ordinary chondrite (L3-6); S3, W2.

Specimens: 22.5 g plus one polished thin section are on deposit at MNB.

Data from:
  MB100
  Table 1
  Line 1201:
Place of purchase:Erfoud, Morocco
Date:P 2006
Mass (g):159.1
Pieces:1
Class:L3-6
Shock stage:S3
Weathering grade:W2
Fayalite (mol%):16.5±9.5 (1.3-29.7, n=13)
Ferrosilite (mol%):13±4.1 (6.2-18.2, n=13)
Classifier:Ansgar Greshake, MNB
Type spec mass (g):22.5
Type spec location:MNB
Main mass:Hanno Strufe
Comments: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. 100, MAPS 49, E1-E101 (2014)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6877 approved meteorites from (Northwest Africa) (plus 2037 unapproved names)

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