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Northwest Africa 10764
Basic information Name: Northwest Africa 10764
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 10764
Observed fall: No
Year found: 2016
Country: (Northwest Africa)
Mass:help 446 g
Classification
  history:
Meteoritical Bulletin:  MB 105  (2016)  L(LL)3
Recommended:  L(LL)3    [explanation]

This is 1 of 14 approved meteorites classified as L(LL)3.   [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 2 Sep 2016
Writeuphelp
Writeup from MB 105:

Northwest Africa 10764 (NWA 10764)

(Northwest Africa)

Purchased: 2016 Feb

Classification: Ordinary chondrite (L(LL)3)

History: Purchased by Bob Falls in February 2016 from a Moroccan dealer at the Tucson Gem and Mineral Show.

Petrography: (A. Irving and S. Kuehner, UWS) Well formed, fairly closely packed chondrules (apparent diameter 500 ± 300 μm) in a finer grained matrix containing altered metal.

Geochemistry: Olivine (Fa1.5-43.8; Cr2O3 in ferroan examples 0.02-0.08 wt.%, mean 0.04±0.02 wt.%; N = 8), orthopyroxene (Fs1.0-40.2Wo1.0-2.3, N = 3), clinopyroxene (Fs9.8-15.2Wo37.7-41.7, N = 2).

Classification: Ordinary chondrite (L(LL)3).

Specimens: 21.0 g including one polished thin section at UWB; remainder with Mr. R. Falls.

Data from:
  MB105
  Table 0
  Line 0:
Place of purchase:Tucson
Date:P 2016 Feb
Mass (g):446.2
Pieces:1
Class:L(LL)3
Shock stage:S2
Weathering grade:W1
Fayalite (mol%):1.5-43.8
Ferrosilite (mol%):1.0-40.2
Wollastonite (mol%):1.0-2.3
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):21.0
Type spec location:UWB
Main mass:R. Falls
Comments:BF16-9; 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. 105, MAPS 52, 2411, September 2017. http://onlinelibrary.wiley.com/doi/10.1111/maps.12944/full
Find references in NASA ADS:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6900 approved meteorites from (Northwest Africa) (plus 2035 unapproved names)

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