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Northwest Africa 5703
Basic information Name: Northwest Africa 5703
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 5703
Observed fall: No
Year found: 2009
Country: (Northwest Africa)
Mass:help 432 g
Classification
  history:
Meteoritical Bulletin:  MB 106  (2018)  CO3
Recommended:  CO3    [explanation]

This is 1 of 608 approved meteorites (plus 1 unapproved name) classified as CO3.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CM-CO clan chondrites, and CO chondrites
Comments: Approved 26 Sep 2017
Writeuphelp
Writeup from MB 106:

Northwest Africa 5703 (NWA 5703)

(Northwest Africa)

Purchased: 2009

Classification: Carbonaceous chondrite (CO3)

History: Eight individulas were bought in 2009 from a Moroccan meteorite on a mineral fair in Berlin, Germany.

Physical characteristics: Eight brownish individuals lacking any fusion crust.

Petrography: The meteorite exhibits a chondritic texture of abundant small chondrules, CAIs, and mineral fragments set into a fine-grained brownish matrix. Chondrules are dominantly porphyritic type I and typically 0.1-0.2 mm in diameter. Sulfides and FeNi metal are present in matrix and chondrules.

Data from:
  MB106
  Table 0
  Line 0:
Place of purchase:Berlin, Germany
Date:P 2009
Mass (g):432
Pieces:8
Class:CO3
Shock stage:S1
Weathering grade:moderate
Fayalite (mol%):14.2±12.2 (1.6-35.5, n=15)
Ferrosilite (mol%):2.9±1.7 (1.2-6.4, n=18)
Wollastonite (mol%):1.7±1.1 (0.1-4.8, n=18)
Classifier:A. Greshake, MNB
Type spec mass (g):20
Type spec location:MNB
Main mass:Stefan Ralew
Comments:Submitted by Ansgar Greshake
Institutions
   and collections
MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
Ralew: Stefan Ralew, Kunibertstraße 29, 12524 Berlin, Germany; Website (private address)
Catalogs:
References: Published in Gattacceca J., Bouvier A., Grossman J., Metzler K., and Uehara M. (2019) Meteoritical Bulletin, no. 106. Meteorit. Planet. Sci. 54 in press.
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Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
aranemac Photo added 19 Apr 2022
Auricular Photo added 19 Apr 2022
Charley Kettel Photo added 19 Apr 2022
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8402 approved meteorites from (Northwest Africa) (plus 1899 unapproved names)

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