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Northwest Africa 8747
Basic information Name: Northwest Africa 8747
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8747
Observed fall: No
Year found: 2014
Country: (Northwest Africa)
Mass:help 93.5 g
Classification
  history:
Meteoritical Bulletin:  MB 106  (2018)  CK5
Recommended:  CK5    [explanation]

This is 1 of 162 approved meteorites classified as CK5.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (equilibrated), CK chondrites, CK chondrites (type 4-6), and CV-CK clan chondrites
Comments: Approved 1 Mar 2017
Writeuphelp
Writeup from MB 106:

Northwest Africa 8747 (NWA 8747)

(Northwest Africa)

Purchased: 2014 Apr

Classification: Carbonaceous chondrite (CK5)

History: Purchased by Darryl Pitt in April 2014 from a dealer in Mauritania.

Petrography: (A. Irving and S. Kuehner, UWS) Sparse mm-sized chondrules containing Cr-magnetite occur within a matrix containing magnetite with some rusty alteration.

Geochemistry: Olivine (Fa31.3-32.8, FeO/MnO = 115-120, N = 3), orthopyroxene (Fs25.9-26.1Wo0.7-0.6, N = 3), augite (Fs3.5Wo39.2; Fs12.0Wo46.2, N = 2).

Classification: Carbonaceous chondrite (CK5).

Specimens: 18.8 g including one polished thin section at UWB; the remainder is held by DPitt.

Data from:
  MB106
  Table 0
  Line 0:
Place of purchase:Mauritania
Date:P 2014 Apr
Mass (g):93.5
Pieces:1
Class:CK5
Shock stage:S2
Weathering grade:moderate
Fayalite (mol%):31.3-32.8
Ferrosilite (mol%):25.9-26.1
Wollastonite (mol%):0.7-0.6
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):18.8
Type spec location:UWB
Main mass:D. Pitt
Comments:MAC 55; submitted by A. Irving
Institutions
   and collections
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
DPitt: Darryl Pitt, 225 West 83rd Street, New York, NY 10024, United States; 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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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7328 approved meteorites from (Northwest Africa) (plus 1973 unapproved names)

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