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Northwest Africa 11847
Basic information Name: Northwest Africa 11847
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11847
Observed fall: No
Year found: 2018
Country: (Northwest Africa)
Mass:help 2.1 kg
Meteoritical Bulletin:  MB 107  (2018)  L5
Recommended:  L5    [explanation]

This is 1 of 7309 approved meteorites (plus 4 unapproved names) classified as L5.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 16 Jun 2018
Writeup from MB 107:

Northwest Africa 11847 (NWA 11847)

(Northwest Africa)

Purchased: 2018 Jan

Classification: Ordinary chondrite (L5)

History: Purchased in New York City by Darryl Pitt in January 2018 from a Moroccan dealer.

Petrography: (A. Irving and S. Kuehner, UWS) Sparse chondrules occur in a dark, recrystallized matrix containing stained metal. The specimen is cross-cut by shock melt veins with very fine grained quench texture.

Geochemistry: Olivine (Fa24.4-25.2, N = 3), orthopyroxene (Fs20.5-20.6Wo2.1-2.0, N = 3), clinopyroxene (Fs8.1-8.5Wo44.8-43.8, N = 2).

Classification: Ordinary chondrite (L5, highly shocked).

Specimens: 20.1 g including one polished thin section at UWB; remainder with DPitt.

Data from:
  Table 0
  Line 0:
Place of purchase:New York City
Date:P 2018 Jan
Mass (g):2098
Shock stage:S5
Weathering grade:W1
Fayalite (mol%):24.4-25.2
Ferrosilite (mol%):20.5-20.6
Wollastonite (mol%):2.1-2.0
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):20.1
Type spec location:UWB
Main mass:DPitt
Comments:Work name MVCH 331; 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)
DPitt: Darryl Pitt, 225 West 83rd Street, New York, NY 10024, United States; Website (private address)
References: Published in Meteoritical Bulletin, no. 107, MAPS 55, 460-462
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     This is 1 of 7937 approved meteorites from (Northwest Africa) (plus 1960 unapproved names)

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