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Northwest Africa 8667
Basic information Name: Northwest Africa 8667
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8667
Observed fall: No
Year found: 2009
Country: (Northwest Africa)
Mass:help 559 g
Meteoritical Bulletin:  MB 104  (2015)  L3
Recommended:  L3    [explanation]

This is 1 of 727 approved meteorites (plus 1 unapproved name) classified as L3.   [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 18 Dec 2015
Writeup from MB 104:

Northwest Africa 8667 (NWA 8667)

(Northwest Africa)

Purchased: 2009 Mar

Classification: Ordinary chondrite (L3)

History: Purchased by Eric Twelker in March 2009 from a dealer in Pohlheim, Germany.

Petrography: (A. Irving and S. Kuehner, UWS) Well-formed, fairly closely packed chondrules occur in a finer grained, metal-bearing matrix.

Geochemistry: Olivine (Fa0.4-92.1; Cr2O3 in ferroan olivine 0.11-0.61 wt.%, mean 0.23 wt.%, sd 0.12 wt.%, N = 16), orthopyroxene (Fs0.5-19.1Wo4.3-5.5, N = 3), subcalcic augite (Fs19.3Wo25.1, N = 1), augite (Fs7.4Wo38.7, N = 1). Magnetic susceptibility log χ (× 10-9 m3/kg) = 4.84.

Classification: Ordinary chondrite (L3). L group designation based on magnetic susceptibility. The very wide range in Fa content of olivine, along with the mean value and standard deviation for Cr2O3 content of ferroan olivines, indicate that this unequilibrated specimen is of a subtype <3.2 (according to the criteria of Grossman and Brearley, 2005).

Specimens: 21.2 g plus one polished thin section at UWB. The remainder is held by E. Twelker.

Data from:
  Table 0
  Line 0:
Place of purchase:Pohlheim
Date:P 2009 Mar
Mass (g):559
Shock stage:S2
Weathering grade:W1
Fayalite (mol%):0.4-92.1
Ferrosilite (mol%):0.5-19.1
Wollastonite (mol%):4.3-5.5
Magnetic suscept.:4.84
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):21.2
Type spec location:UWB
Main mass:E. Twelker
Comments:ET14-2; 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)
Twelker: Eric Twelker, P.O. Box 844, Port Townsend, WA 98368, United States; Website (private address; updated 1 Dec 2014)
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 7912 approved meteorites from (Northwest Africa) (plus 1974 unapproved names)

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