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Northwest Africa 1939
Basic information Name: Northwest Africa 1939
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 1939
Observed fall: No
Year found: 2003
Country: (Northwest Africa)
Mass:help 100.4 g
Classification
  history:
Meteoritical Bulletin:  MB 88  (2004)  Howardite
MetBase:  v. 7.1  (2006)  Howardite
Recommended:  Howardite    [explanation]

This is 1 of 398 approved meteorites classified as Howardite.   [show all]
Search for other: Achondrites, HED achondrites, and Howardites
Writeuphelp
Writeup from MB 88:

Northwest Africa 1939

Morocco

Found 2002

Achondrite (howardite)

A 100.4 g incomplete stone was purchased in Rissani in 2003 June. Classification and mineralogy (J. Wittke and T. Bunch, NAU): medium-grained howardite composed of basaltic eucrites (72 vol%), diogenitic pyroxenes (17 vol%), granular eucrites (8 vol%) and shock clasts. Diogenitic pyroxenes are mostly pigeonite (mean, Fs39.3Wo7.3). Basaltic pyroxenes are Fs32.4-47.8Wo3-11.6, plagioclase, An89.8, with ilmenite, silica, and chromite (Cr/Cr+Al = 0.61).  Shock level, S1; slightly weathered. Specimens: 19.5 g, NAU; main mass, MFarmer.

Data from:
  MB88
  Table 4
  Line 95:
Place of purchase:Rissani
Date:P Jun 2003
Mass (g):100.4
Pieces:1
Class:How
Classifier:T. Bunch and J. Wittke, NAU
Type spec mass (g):19.5
Type spec location:ASU
Main mass:MFarmer
Institutions
   and collections
ASU: Center for Meteorite Studies, Arizona State University, Tempe, Arizona 85287-1404, United States; Website (institutional address; updated 14 Jan 2012)
NAU: Geology, Bldg 12 Knoles Dr Northern Arizona University, Flagstaff, AZ 86011, United States; Website (institutional address; updated 12 Apr 2012)
MFarmer: Michael Farmer, P.O. Box 86059, Tucson, AZ 85754-6059, United States; Website (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 88, MAPS 39, A215-A272 (2004)
Find references in NASA ADS:
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Photos:
CreditPhotos
Photos from the Encyclopedia of Meteorites:
Don Edwards   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7820 approved meteorites from (Northwest Africa) (plus 1971 unapproved names)

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