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Northwest Africa 4934
Basic information Name: Northwest Africa 4934
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 4934
Observed fall: No
Year found: 2007
Country: (Northwest Africa)
Mass:help 307 g
Classification
  history:
Meteoritical Bulletin:  MB 93  (2008)  Howardite
Recommended:  Howardite    [explanation]

This is 1 of 372 approved meteorites classified as Howardite.   [show all]
Search for other: Achondrites, HED achondrites, and Howardites
Comments: Approved 14 Jan 2008
Revised 4 Aug 2008: final writeup
Writeuphelp
Writeup from MB 93:

Northwest Africa 4934

Northwest Africa

Find: October 2007

Achondrite (howardite)

History: Purchased by Greg Hupé in October 2007 from a dealer in Tagounite, Morocco.

Physical characteristics: A single stone (307 g) with patches of weathered fusion crust. The interior contains many dark and light colored clasts (mostly 1-5 mm across), including prominent yellow-green diogenite clasts (up to 14 mm across), in a light gray matrix.

Petrography: (A. Irving and S. Kuehner, UWS) Breccia composed of mineral fragments of orthopyroxene, calcic plagioclase, exsolved pigeonite, silica polymorph, ilmenite, chromite and troilite, plus diogenite clasts (composed of orthopyroxene with accessory chromite).

Geochemistry: Orthopyroxene (Fs23.8-33.3Wo2.2-2.5; FeO/ MnO = 24.4-29.0), orthopyroxene host in exsolved pigeonite (Fs65.1Wo4.3; FeO/MnO = 35.2), plagioclase (An90.5-93.4Or0.4-0.1).

Classification: Achondrite (howardite). Minimal interior weathering. Specimens: A total of 20.3 g of sample and one polished thin section are on deposit at UWS. GHupé holds the main mass.

Submitted by: A. Irving, UWS.

 

Data from:
  MB93
  Table 2
  Line 155:
Place of purchase:Tagounit, Morocco
Date:October 2007
Mass (g):307
Pieces:1
Class:How
Type spec mass (g):20.3
Institutions
   and collections
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
GHupé: Gregory M. Hupé, 9003 Placid Lakes Blvd., Lake Placid, FL 33852, United States; Website (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 93, MAPS 43, 571-632 (2008)
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Photos:
CreditPhotos
Photos from the Encyclopedia of Meteorites:
The Hupe Collection   
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Dirk Hohmann      
METEORITES AUSTRALIA   
tett   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6916 approved meteorites from (Northwest Africa) (plus 2027 unapproved names)

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