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Northwest Africa 2696
Basic information Name: Northwest Africa 2696
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 2696
Observed fall: No
Year found: 2004
Country: (Northwest Africa)
Mass:help 15 kg
Classification
  history:
Recommended:  Eucrite-br    [explanation]

This is 1 of 217 approved meteorites classified as Eucrite-br.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 28 Sep 2020
Writeuphelp
Writeup from MB 109:

Northwest Africa 2696 (NWA 2696)

Northwest Africa

Purchased: 2004

Classification: HED achondrite (Eucrite, brecciated)

History: Purchased by Greg Hupé in 2004 from several Moroccan dealers.

Petrography: (A. Irving, UWS and J. Boesenberg, Brown U) Breccia containing some fine- to medium-grained eucrite clasts plus abundant related angular crystalline debris. Minerals are exsolved pigeonite, calcic plagioclase, unexsolved pigeonite, subcalcic augite, ilmenite, silica, chromite, altered Ni-free metal and troilite. No olivine or diogenitic orthopyroxene was found in the studied thin section.

Geochemistry: Low-Ca pyroxene host (Fs55.9-57.8Wo2.6-4.6, FeO/MnO = 27-29, N = 7), augite exsolution lamellae (Fs26.5-29.2Wo38.2-41.2, FeO/MnO = 26-28, N = 2), pigeonite (Fs44.6-48.8Wo19.5-14.7; Fs54.0Wo7.6; FeO/MnO = 25-29, N = 6), subcalcic augite (Fs39.7-42.0Wo27.0-24.0, FeO/MnO = 25-29, N = 2), plagioclase (An76.8-93.1Or1.9-0.5, N = 5).

Classification: Eucrite (breccia).

Specimens: 28 g including one polished thin section at PSF; remainder with Mr. G. Hupé.

Data from:
  MB109
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2004
Mass (g):~15000
Pieces:many
Class:Eucrite-br
Shock stage:low
Weathering grade:low
Ferrosilite (mol%):55.9-57.8; 26.5-29.2; 44.6-48.8
Wollastonite (mol%):2.6-4.6; 38.2-41.2; 19.5-14.7
Classifier:A. Irving, UWS, and J. Boesenberg, BrownU
Type spec mass (g):28.0
Type spec location:PSF
Main mass:G. Hupe
Comments: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)
Hupe: (old address—now see GHupé or AHupé) G. and A. Hupe, 2616 Lake Youngs Court SE, Renton, WA 98058., United States (private address)
BrownU: Brown University Providence, RI 02912, United States (institutional address; updated 7 Sep 2019)
Catalogs:
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
Find references in NASA ADS:
Find references in Google Scholar:
Photos:
CreditPhotos
Photos from the Encyclopedia of Meteorites:
Michael Cottingham      
Peter Marmet   
The Hupe Collection   
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
abibou Photo added 20 Oct 2022
André Knöfel Photo added 20 Oct 2022
bphd Photo added 20 Oct 2022
Carlos Di Pietro Bella Photo added 20 Oct 2022
Photo added 20 Oct 2022
David L. Ribeca Photo added 20 Oct 2022
Denis gourgues Photo added 20 Oct 2022
Don Cuarzo   
Edward Krikorian Photo added 20 Oct 2022
Gerald Armstrong Photo added 20 Oct 2022
harlan trammell   
Jean-Michel Masson Photo added 20 Oct 2022
Photo added 20 Oct 2022
Photo added 20 Oct 2022
Photo added 20 Oct 2022
Photo added 20 Oct 2022
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Krzysztof Nowak Photo added 20 Oct 2022
METEORITICON      
Michael S. Scherman Photo added 20 Oct 2022
Mike Smith Photo added 20 Oct 2022
Piotr gural100 Photo added 20 Oct 2022
Robert Zdancewicz Photo added 20 Oct 2022
Ryan Upchurch   
Stefano Prosperi   
stephen dunklee   
Suzanne De Paula Photo added 20 Oct 2022
The Wilcox Collection of Meteorites   
Photo added 20 Oct 2022
Volker Heinrich Photo added 20 Oct 2022
Woreczko Jan & Wadi Photo added 20 Oct 2022
xeqtr Photo added 20 Oct 2022
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8777 approved meteorites from (Northwest Africa) (plus 1879 unapproved names)

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