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Northwest Africa 7669
Basic information Name: Northwest Africa 7669
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7669
Observed fall: No
Year found: 2012
Country: (Northwest Africa)
Mass:help 176 g
Meteoritical Bulletin:  MB 103  (2014)  LL3
Recommended:  LL3    [explanation]

This is 1 of 414 approved meteorites classified as LL3.   [show all]
Search for other: LL chondrites, LL chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 8 Nov 2014
Writeup from MB 103:

Northwest Africa 7669 (NWA 7669)

(Northwest Africa)

Purchased: 2012 Dec

Classification: Ordinary chondrite (LL3)

History: Purchased by A. Aaronson in Temara, Morocco, in December 2012.

Petrography: (A. Irving and S. Kuehner, UWS) Well-developed, relatively large and closely packed chondrules. Olivine, orthopyroxene, subcalcic augite, augite, sodic plagioclase, chromite, kamacite and troilite. Chondrules are 0.5-3.0 mm, mean 2 mm, in diameter.

Geochemistry: Olivine (Fa0.6-52.0; Cr2O3 in ferroan olivine = 0.03-0.27 wt.%, mean = 0.10 wt.%, sd = 0.09 wt.% , N = 7), orthopyroxene (Fs0.9-9.4Wo0.8-0.4, N = 3), subcalcic augite (Fs17.9Wo25.8), augite (Fs16.6Wo44.4).

Classification: Ordinary chondrite (LL3).

Specimens: A total of 20.2 g of material and one polished thin section are on deposit at UWB. Aaronson holds the main mass.

Data from:
  Table 0
  Line 0:
Place of purchase:Temara
Date:P 2012 Dec
Mass (g):176
Shock stage:S2
Weathering grade:W1/2
Fayalite (mol%):0.6-52.0
Ferrosilite (mol%):0.9-9.4
Wollastonite (mol%):0.8-0.4
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):20.2
Type spec location:UWB
Main mass:Aaronson
Comments:M1462; 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)
Aaronson: Sahara Overland Ltd., Harhora, Temara, 12000, Morocco (private address; updated 3 Jan 2010)
References: Published in Meteoritical Bulletin, no. 103, MAPS 52, 1014, May 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12888/full
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     This is 1 of 8495 approved meteorites from (Northwest Africa) (plus 1899 unapproved names)

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