Meteoritical Bulletin: Entry for Northwest Africa 11449

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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: 201 g

Classification
history:

Meteoritical Bulletin:	MB 106	(2018)	Eucrite-pmict
Recommended:			Eucrite-pmict [explanation]

This is 1 of 409 approved meteorites classified as Eucrite-pmict. [show all]
Search for other: Achondrites, Eucrites, and HED achondrites

Comments:

Approved 13 Oct 2017

Writeup

help

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 (Fs_56.2-56.4Wo_3.3-1.7, FeO/MnO = 31-35, N = 2), clinopyroxene exsolution lamella (Fs_23.5Wo_43.5, FeO/MnO = 34), orthopyroxene host (Fs_44.8Wo_1.5, FeO/MnO = 39), clinopyroxene exsolution lamella (Fs_14.4Wo_44.5, FeO/MnO = 24), plagioclase (An_74.8-81.6Or_2.0-1.2, 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.

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Photos:

Credit	Photos
Photos uploaded by members of the Encyclopedia of Meteorites. (Caution, these are of unknown reliability)
Cute child
Mike Markowitz
Ryan Upchurch

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9710 approved meteorites from (Northwest Africa) (plus 1853 unapproved names)

Also see:

This lists the most popular meteorites among people who looked up this meteorite.

Revision
history:

This lists important revisions made to data for this record.

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