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Northwest Africa 11449
Basic information Name: Northwest Africa 11449
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11449
Observed fall: No
Year found: 2017
Country: (Northwest Africa)
Mass:help 201 g
Classification
  history:
Meteoritical Bulletin:  MB 106  (2018)  Eucrite-pmict
Recommended:  Eucrite-pmict    [explanation]

This is 1 of 339 approved meteorites classified as Eucrite-pmict.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 13 Oct 2017
Writeuphelp
Writeup from MB 106:

Northwest Africa 11449 (NWA 11449)

(Northwest Africa)

Purchased: 2017 Apr

Classification: HED achondrite (Eucrite, polymict)

History: Purchased by Fabien Kuntz in April 2017 from a dealer in Erfoud, Morocco.

Petrography: (A. Irving and S. Kuehner, UWS) Breccia composed predominantly of diabasic eucrite clasts and related debris plus ~2 vol.% diogenite clasts. Minerals are exsolved pigeonite (with several different bulk compositions), calcic plagioclase, orthopyroxene, silica polymorph, ilmenite, troilite and rare zircon.

Geochemistry: Orthopyroxene host (Fs56.2-56.4Wo3.3-1.7, FeO/MnO = 31-35, N = 2), clinopyroxene exsolution lamella (Fs23.5Wo43.5, FeO/MnO = 34), orthopyroxene host (Fs44.8Wo1.5, FeO/MnO = 39), clinopyroxene exsolution lamella (Fs14.4Wo44.5, FeO/MnO = 24), plagioclase (An74.8-81.6Or2.0-1.2, N = 2).

Classification: Eucrite (polymict breccia).

Specimens: 22.02 g including one polished thin section at PSF; remainder with Kuntz.

Data from:
  MB106
  Table 0
  Line 0:
Place of purchase:Erfoud
Date:P 2017 Apr
Mass (g):201.3
Pieces:1
Class:Eucrite-pmict
Shock stage:low
Weathering grade:low
Ferrosilite (mol%):56.2-56.4; 44.8; 23.5; 14.4
Wollastonite (mol%):3.3-1.7; 1.5; 43.5; 44.5
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):22.02
Type spec location:PSF
Main mass:F. Kuntz
Comments:Work name K335; 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)
Kuntz: Fabien Kuntz, France; Website (private address)
Catalogs:
References: Published in Gattacceca J., Bouvier A., Grossman J., Metzler K., and Uehara M. (2019) Meteoritical Bulletin, no. 106. Meteorit. Planet. Sci. 54 in press.
Find references in NASA ADS:
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Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Mike Markowitz   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6759 approved meteorites from (Northwest Africa) (plus 2047 unapproved names)

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