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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 554 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   
Auricular   
Charley Kettel   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7374 approved meteorites from (Northwest Africa) (plus 1957 unapproved names)

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