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Northwest Africa 11808
Basic information Name: Northwest Africa 11808
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11808
Observed fall: No
Year found: 2017
Country: (Northwest Africa)
Mass:help 412 g
Classification
  history:
Recommended:  CK4    [explanation]

This is 1 of 104 approved meteorites classified as CK4.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (equilibrated), CK chondrites, CK chondrites (type 4-6), and CV-CK clan chondrites
Comments: Approved 28 May 2018
Writeuphelp
Writeup from MB 107:

Northwest Africa 11808 (NWA 11808)

(Northwest Africa)

Purchased: 2017 Nov

Classification: Carbonaceous chondrite (CK4)

History: Found by a camel herder in November 2017 near Tarfaya El Hagounia, Morocco and purchased by Mbark Arjdal.

Petrography: (A. Irving and S. Kuehner, UWS) Separated, well-formed. magnetite-bearing granular chondrules (apparent diameter 770±380 µm, N = 20) and sparse very fine grained CAI are set in a fine grained matrix containing orange-stained Cr-magnetite.

Geochemistry: Olivine (Fa34.3-34.3, N = 3), clinopyroxene (Fs9.3-9.8Wo46.5-46.0, N = 2), orthopyroxene (Fs27.0Wo3.9).

Classification: Carbonaceous chondrite (CK4).

Specimens: 20.2 g including one polished thin section at UWB; remainder with Mr. M. Arjdal.

Data from:
  MB107
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2017 Nov
Mass (g):412
Pieces:1
Class:CK4
Shock stage:S2
Weathering grade:low
Fayalite (mol%):34.2-34.3
Ferrosilite (mol%):9.3-9.8
Wollastonite (mol%):46.5-46.0
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):20.2
Type spec location:UWB
Main mass:M. Arjdal
Comments:Arj18-1; 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)
Catalogs:
References: Published in Meteoritical Bulletin, no. 107, in preparation (2018)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6461 approved meteorites from (Northwest Africa) (plus 2002 unapproved names)

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