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Northwest Africa 13934
Basic information Name: Northwest Africa 13934
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13934
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 998 g
Classification
  history:
Recommended:  CK3    [explanation]

This is 1 of 79 approved meteorites classified as CK3.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CK chondrites, CK3 chondrites, and CV-CK clan chondrites
Comments: Approved 5 Jun 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 13934 (NWA 13934)

(Northwest Africa)

Purchased: March, 2021

Classification: Carbonaceous chondrite (CK3)

History: The meteorite was purchased from a dealer in Mauritania.

Physical characteristics: Four grayish to dark greenish fragments partly covered with fusion crust.

Petrography: The meteorite displays a grayish to dark greenish interior and is composed of separated and well-defined chondrules (apparent mean diameter about 750 µm) and few CAIs (up to 7 mm) in a fine-grained ferroan matrix. Ni-bearing olivine is the dominating mineral. Less abundant phases include low-Ca pyroxene, Ca-pyroxene, intermediate plagioclase, and FeS. Cr-rich magnetite is abundant; metal was not detected.

Geochemistry: olivine: Fa25.6±9.3 (Fa4.0-31.9, FeO/MnO=111±25; NiO=0.30±0.10 wt%, n=14); low-Ca pyroxene: Fs8.1±8.6Wo1.3±0.5 (Fs1.1-24.0Wo0.8-3.0, n=15); Ca-pyroxene: Fs8.6±3.1Wo49.3±1.7 (Fs7.1-16.2Wo45.3-50.4, n=7); feldspar: An16.8-33.7Ab63.9-78.5Or2.3-4.9±0.4, n=6; magnetite contains 4.06±0.05 wt% Cr2O3, n=3

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Mauritania
Date:P March, 2021
Mass (g):998
Pieces:4
Class:CK3
Shock stage:S1
Weathering grade:moderate
Fayalite (mol%):25.6
Ferrosilite (mol%):8.1; 8.6
Wollastonite (mol%):1.3; 49.3
Magnetic suscept.:4.65
Classifier:A. Greshake, MNB
Type spec mass (g):29.7
Type spec location:MNB
Main mass:Hanno Strufe and Andreas Grünemeyer
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)
Volker Heinrich   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9013 approved meteorites from (Northwest Africa) (plus 1869 unapproved names)

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