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Northwest Africa 11959
Basic information Name: Northwest Africa 11959
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11959
Observed fall: No
Year found: 2018
Country: (Northwest Africa)
Mass:help 519 g
Classification
  history:
Meteoritical Bulletin:  MB 107  (2018)  L4
Recommended:  L4    [explanation]

This is 1 of 1715 approved meteorites (plus 4 unapproved names) classified as L4.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 3 Aug 2018
Writeuphelp
Writeup from MB 107:

Northwest Africa 11959 (NWA 11959)

(Northwest Africa)

Purchased: 2018 May

Classification: Ordinary chondrite (L4)

History: Purchased by Ben Hoefnagels in May 2018 from a Moroccan dealer.

Petrography: (A. Irving and S. Kuehner, UWS) Well-formed chondrules are set in a relatively coarse grained matrix containing relatively abundant altered metal plus accessory merrillite and chlorapatite.

Geochemistry: Olivine (Fa23.5-23.8, N = 3), orthopyroxene (Fs19.8-20.5Wo1.3-1.0, N = 3), clinopyroxene (Fs10.3-10.6Wo35.7-34.6, N = 2).

Classification: Ordinary chondrite (L4).

Specimens: 26.2 g including one polished thin section at UWB; remainder with Mr. B. Hoefnagels.

Data from:
  MB107
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2018 May
Mass (g):519.3
Pieces:1
Class:L4
Shock stage:S2
Weathering grade:W2
Fayalite (mol%):23.5-23.8
Ferrosilite (mol%):19.8-20.5
Wollastonite (mol%):1.3-1.0
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):26.2
Type spec location:UWB
Main mass:B. Hoefnagels
Comments:Work name BH147; 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. 107, MAPS 55, 460-462
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7655 approved meteorites from (Northwest Africa) (plus 1972 unapproved names)

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