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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:help 410 g
Classification
  history:
Recommended:  H5    [explanation]

This is 1 of 10308 approved meteorites (plus 45 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
Writeuphelp
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 (Fa19.4±0.3, range Fa19.1-19.8, N = 4), low-Ca pyroxene (Fs16.9±0.2Wo1.1±0.1, range Fs16.7-17.2Wo1.0-1.3, N = 6), augite (Fs6.2Wo42.3).

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: Brown University Providence, RI 02912, United States (institutional address; updated 7 Sep 2019)
Catalogs:
References: Published in Meteoritical Bulletin, no. 110, in preparation (2021)
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)
Ryan Upchurch   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7937 approved meteorites from (Northwest Africa) (plus 1960 unapproved names)

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