Meteoritical Bulletin: Entry for Northwest Africa 13961

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Northwest Africa 13961

Basic information

Name: Northwest Africa 13961
This is an OFFICIAL meteorite name.
Abbreviation: NWA 13961
Observed fall: No
Year found: 2005
Country: (Northwest Africa)
Mass: 410 g

Classification
history:

Meteoritical Bulletin:	MB 110	(2022)	H5
Recommended:			H5 [explanation]

This is 1 of 11567 approved meteorites (plus 23 unapproved names) classified as H5. [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)

Comments:

Approved 6 May 2021

Writeup

Writeup from MB 110:

Northwest Africa 13961 (NWA 13961)

(Northwest Africa)

Purchased: 2005 Feb

Classification: Ordinary chondrite (H5)

History: Purchased by Blaine Reed in February 2005 from a Moroccan dealer at the Tuscon Gem and Mineral Show.

Petrography: (A. Irving, UWS and J. Boesenberg, BrownU.) Largely recrystallized with sparse chondrules. Accessory phases are altered metal, troilite, sodic plagioclase, chromite, apatite and devitrified glass.

Geochemistry: Olivine (Fa_19.4±0.3, range Fa_19.1-19.8, N = 4), low-Ca pyroxene (Fs_16.9±0.2Wo_1.1±0.1, range Fs_16.7-17.2Wo_1.0-1.3, N = 6), augite (Fs_6.2Wo_42.3).

Classification: Ordinary chondrite (H5).

Specimens: 22.2 g including one polished thin section at PSF; remainder with Mr. B. Reed.

Data from:
  MB110
  Table 0
  Line 0:

Place of purchase:	Tucson
Date:	P 2005 Feb
Mass (g):	410
Pieces:	1
Class:	H5
Shock stage:	S2
Weathering grade:	W2
Fayalite (mol%):	19.4±0.3
Ferrosilite (mol%):	16.9±0.2
Wollastonite (mol%):	1.1±0.1
Classifier:	A. Irving, UWS, and J. Boesenberg, BrownU.
Type spec mass (g):	22.2
Type spec location:	PSF
Main mass:	B. Reed
Comments:	Work name BR 113; 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)
Reed: Blaine Reed, P.O. Box 1141, Delta, CO 81416, United States; Website (private address)
BrownU: Joseph Boesenberg Brown University Dept of Earth, Environmental and Planetary Sciences (DEEPS) 324 Brook Street Providence, RI 02912 , United States (institutional address; updated 4 Jan 2024)

Catalogs:

References:

Published in Gattacceca J., McCubbin F.M., Grossman J., Bouvier A., Chabot N.L., D'Orazio M., Goodrich C., Greshake A., Gross J., Komatsu M., Miao B., and Schrader D. (2022) The Meteoritical Bulletin, No. 110. Meteorit. Planet. Sci. 1-4

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Photos:

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

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names)

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Revision
history:

This lists important revisions made to data for this record.

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