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Northwest Africa 4913
Basic information Name: Northwest Africa 4913
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 4913
Observed fall: No
Year found: 2007
Country: (Northwest Africa)
Mass:help 2.64 kg
Classification
  history:
Recommended:  L3    [explanation]

This is 1 of 795 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 31 Oct 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 4913 (NWA 4913)

(Northwest Africa)

Purchased: 2007

Classification: Ordinary chondrite (L3)

History: The meteorite was purchased from a local meteorite dealer in Erfoud, Morocco.

Physical characteristics: Dark brownish rock without fusion crust.

Petrography: The meteorite shows a chondritic texture with well packed and mostly rounded chondrules (apparent mean diameter about 0.7 mm). The fine-grained matrix contains sulfides and FeNi metal.

Classification: Ordinary chondrite (L3). L group based on chondrule size and magnetic susceptibility Rochette et al. (2003).

Bibliography:
  • Rochette P., Sagnotti L., Bourot-Denise M., Consolmagno G., Folco L., Gattacceca J., Osete M.L., and Pesonen L. (2003) Magnetic classification of stony meteorites: 1. Ordinary chondrites. Meteorit. Planet. Sci. 38 251-268. (link)
Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Erfoud, Morocco
Date:P 2007
Mass (g):2641.1
Pieces:1
Class:L3
Shock stage:S2
Weathering grade:W2
Fayalite (mol%):15.3±10.1 (4.1-30.8, n=15)
Ferrosilite (mol%):10.8±8.3 (2.3-27.1, n=19)
Wollastonite (mol%):0.8±0.8 (0.2-3.0, n=19)
Magnetic suscept.:4.63
Classifier:A. Greshake, MNB
Type spec mass (g):25.7
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 Gattacceca J., McCubbin F.M., Grossman J., Bouvier A., Chabot N.L., D'Orazio M., Goodrich C., Greshake A., Gross J., Komatsu M., Miao B., and Schrader D. (2022) The Meteoritical Bulletin, No. 110. Meteorit. Planet. Sci. 1-4
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Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
André Knöfel   
eraserhead Photo added 20 Oct 2022
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8777 approved meteorites from (Northwest Africa) (plus 1879 unapproved names)

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