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Northwest Africa 7727
Basic information Name: Northwest Africa 7727
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7727
Observed fall: No
Year found: 2012
Country: (Northwest Africa)
Mass:help 150 g
Meteoritical Bulletin:  MB 103  (2014)  L3
Recommended:  L3    [explanation]

This is 1 of 729 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 1 Jul 2014
Writeup from MB 103:

Northwest Africa 7727 (NWA 7727)

(Northwest Africa)

Purchased: 2012 Dec

Classification: Ordinary chondrite (L3)

History: Purchased in Temara, Morocco by Adam Aaronson in August 2012.

Petrography: (A. Irving and S. Kuehner, UWS) Well-developed, separated, small to medium-sized chondrules within a fine-grained ferroan matrix. Olivine, orthopyroxene, subcalcic augite, sparse troilite and rare altered kamacite. Plagioclase is apparently absent.

Geochemistry: Olivine (Fa2.9-33.8; Cr2O3 in ferroan olivine = 0.02-0.09 wt.%, mean = 0.06 wt.%, sd = 0.02 wt.%, N = 7), orthopyroxene (Fs2.6-22.0Wo0.4-0.5; Fs57.1Wo3.0), subcalcic augite (Fs11.8-13.6Wo32.0-30.8).

Classification: There are no CAI and chondrule sizes are 0.5 to 2 mm, so this is an ordinary chondrite (L3).

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):150
Shock stage:S2
Weathering grade:W2
Fayalite (mol%):2.9-33.8
Ferrosilite (mol%):2.6-57.1
Wollastonite (mol%):0.4-3.0
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):20.2
Type spec location:UWB
Main mass:A. Aaronson
Comments:M1494; 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 7937 approved meteorites from (Northwest Africa) (plus 1960 unapproved names)

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