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Northwest Africa 8221
Basic information Name: Northwest Africa 8221
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8221
Observed fall: No
Year found: 2013
Country: (Northwest Africa)
Mass:help 485 g
Meteoritical Bulletin:  MB 104  (2015)  CK5
Recommended:  CK5    [explanation]

This is 1 of 203 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 9 Mar 2015
Writeup from MB 104:

Northwest Africa 8221 (NWA 8221)

(Northwest Africa)

Purchased: 2013 Nov

Classification: Carbonaceous chondrite (CK5)

History: Purchased by Marcin Cimała and Lukasz Smula in November 2013 from a dealer in Zagora, Morocco.

Petrography: (A. Irving and S. Kuehner, UWS) Very fresh specimen composed of sparse, separated, medium-sized, granular chondrules (containing abundant magnetite) in a pale brown matrix. Minerals are olivine, clinopyroxene, intermediate plagioclase, Cr-bearing magnetite and pentlandite.

Geochemistry: Olivine (Fa33.5-34.6; FeO/MnO = 123-142, N = 3), clinopyroxene (Fs11.1-12.9Wo43.9-47.4; FeO/MnO = 53-120, N = 3).

Classification: Carbonaceous chondrite (CK5).

Specimens: 22 g including one polished thin section at UWB. The remaining material is held jointly by Mr. M. Cimała, Mr. L. Smula and Ms. M. Skirzewska.

Data from:
  Table 0
  Line 0:
Place of purchase:Zagora
Date:P 2013 Nov
Mass (g):485
Shock stage:S2
Weathering grade:low
Fayalite (mol%):33.5-34.6
Ferrosilite (mol%):11.1-12.9
Wollastonite (mol%):43.9-47.4
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):22
Type spec location:UWB
Main mass:M. Cimala, L. Smula and M. Skirzewska
Comments:51.1; submitted by A. Irving
   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)
References: Published in Meteoritical Bulletin, no. 104, MAPS 52, 2284, Octover 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12930/full
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     This is 1 of 9092 approved meteorites from (Northwest Africa) (plus 1875 unapproved names)

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