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Northwest Africa 11986
Basic information Name: Northwest Africa 11986
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11986
Observed fall: No
Year found: 2005
Country: (Northwest Africa)
Mass:help 105.4 g
Classification
  history:
Recommended:  L4    [explanation]

This is 1 of 1613 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 15 Sep 2018
Writeuphelp
Writeup from MB 107:

Northwest Africa 11986 (NWA 11986)

(Northwest Africa)

Purchased: 2005

Classification: Ordinary chondrite (L4)

History: Purchased by an anonymous collector from a dealer at the Munich Show in 2005, subsequently acquired by the Hollis Collection and then donated to PSF.

Petrography: (A. Irving and S. Kuehner, UWS) Well-formed, equilibrated chondrules are set in a matrix containing altered metal, chlorapatite and merrillite.

Geochemistry: Olivine (Fa24.5-24.7, N = 3), orthopyroxene (Fs19.6-20.9Wo1.0-1.6, N = 3), clinopyroxene (Fs8.3-9.5Wo45.0-44.5, N = 2).

Classification: Ordinary chondrite (L4).

Specimens: The entire specimen including one polished thin section is at PSF.

Data from:
  MB107
  Table 0
  Line 0:
Place of purchase:Munich
Date:P 2005
Mass (g):105.4
Pieces:1
Class:L4
Shock stage:S2
Weathering grade:W2
Fayalite (mol%):24.5-24.7
Ferrosilite (mol%):19.6-20.9
Wollastonite (mol%):1.0-1.6
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):105.4
Type spec location:PSF
Main mass:PSF
Comments:CHC18026; submitted by A. Irving
Institutions
   and collections
PSF: Planetary Studies Foundation,10 Winterwood Lane, Unit B, Galena, Illinois 61036-9283, United States; Website (institutional address; updated 1 Dec 2011)
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
Catalogs:
References: Published in Meteoritical Bulletin, no. 107, in preparation (2018)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6900 approved meteorites from (Northwest Africa) (plus 2027 unapproved names)

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