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Northwest Africa 4646
Basic information Name: Northwest Africa 4646
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 4646
Observed fall: No
Year found: 2006
Country: (Northwest Africa)
Mass:help 2.04 kg
Classification
  history:
Meteoritical Bulletin:  MB 100  (2012)  L3
Recommended:  L3    [explanation]

This is 1 of 718 approved meteorites (plus 1 unapproved name) classified as L3.   [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 4646 (NWA 4646)

Northwest Africa

Purchased: 2006

Classification: Ordinary chondrite (L3)

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 with some fusion crust weighing 2042.4 g.

Petrography: The sample is an unbrecciated chondrite with unequilibrated olivine and pyroxene occurring in chondrules as well as in the matrix. The chondrules are well defined and of large variation in the textural types.

Geochemistry: Olivine Fa2.7-51.4; pyroxene Fs1.8-17.6

Classification: Ordinary chondrite (L3); S2, W2/3.

Specimens: 22.6 g plus one polished thin section are on deposit at MNB.

Data from:
  MB100
  Table 1
  Line 1203:
Place of purchase:Erfoud, Morocco
Date:P 2006
Mass (g):2042.4
Pieces:1
Class:L3
Shock stage:S2
Weathering grade:W2/3
Fayalite (mol%):22.4±16.6 (2.7-51.4, n=11)
Ferrosilite (mol%):18.6±5.3 (1.8-17.6, n=18)
Classifier:Ansgar Greshake, MNB
Type spec mass (g):22.6
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; updated 24 Dec 2011)
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 7655 approved meteorites from (Northwest Africa) (plus 1972 unapproved names)

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