Meteoritical Bulletin: Entry for Northwest Africa 6441

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Northwest Africa 6441

Basic information

Name: Northwest Africa 6441
This is an OFFICIAL meteorite name.
Abbreviation: NWA 6441
Observed fall: No
Year found: 2010
Country: (Northwest Africa)
Mass: 28.3 g

Classification
history:

Meteoritical Bulletin:	MB 102	(2013)	Ureilite
Recommended:			Ureilite [explanation]

This is 1 of 674 approved meteorites classified as Ureilite. [show all]
Search for other: Achondrites, Ureilites

Comments:

Approved 10 Dec 2013
Revised 28 Sep 2020: corrected purchase date

Writeup

Writeup from MB 102:

Northwest Africa 6441 (NWA 6441)

(Northwest Africa)

Purchased: 2010

Classification: Ureilite

History: Purchased by F. Kuntz in December 2012 from a dealer in Erfoud, Morocco.

Petrography: (A. Irving and S. Kuehner, UWS) Protogranular aggegate of olivine (with dark reduced rims), pigeonite and subcalcic augite.

Geochemistry: Olivine (core Fa_21.3-21.4, rim Fa_8.0-11.5), pigeonite (Fs_17.9-18.2Wo_5.4-5.5), subcalcic augite (Fs_3.1-9.0Wo_29.5-28.8).

Classification: Ureilite.

Specimens: Type specimen plus one polished thin section at PSF; main mass with Kuntz.

Writeup from MB 109:

NWA 6441: correction

The description in MetBull 102 contained an error. The meteorite was purchased by Fabien Kuntz in 2010.

Data from:
  MB102
  Table 0
  Line 0:

Place of purchase:	Erfoud
Date:	P 2010
Mass (g):	28.3
Pieces:	1
Class:	Ureilite
Shock stage:	low
Weathering grade:	low
Fayalite (mol%):	21.3-21.4
Ferrosilite (mol%):	17.9-18.2; 3.1-9.0
Wollastonite (mol%):	5.4-5.5; 29.5-28.8
Classifier:	A. Irving and S. Kuehner, UWS
Type spec mass (g):	5.8
Type spec location:	PSF
Main mass:	F. Kuntz
Comments:	K 147; submitted by P. Sipiera

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 Meteoritical Bulletin, no. 102, MAPS 50, 1662, September 2015
Published in Gattacceca J., McCubbin F. M., Grossman J., Bouvier A., Bullock E., Chennaoui Aoudjehane H., Debaille V., D’Orazio M., Komatsu M., Miao B. and Schrader D. L. (2021) The Meteoritical Bulletin, No. 109. Meteoritics & Planetary Science 56, 1626–1630.

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Photos:

Credit	Photos
Photos uploaded by members of the Encyclopedia of Meteorites. (Caution, these are of unknown reliability)
Michael Mulgrew

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9914 approved meteorites from (Northwest Africa) (plus 1841 unapproved names)

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