header
  MetSoc Home            Publications            Search Meteorites  
Search the Meteoritical Bulletin Database
Last update: 23 Jul 2016
Search for: Search type: Search limits: Display: Publication:
Names
Text help
Places
Classes
Contains
Starts with
Exact
Sounds like
NonAntarctic
Falls
What's new
  in the last:
Limit to approved meteorite names
Search text:  
Northwest Africa 1929
Basic information Name: Northwest Africa 1929
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 1929
Observed fall: No
Year found: 2003
Country: Morocco
Mass:help 922 g
Classification
  history:
Meteoritical Bulletin:  MB 90  (2006)  Howardite
Recommended:  Howardite    [explanation]

This is 1 of 325 approved meteorites classified as Howardite.   [show all]
Search for other: Achondrites, Howardites, and HED achondrites
Comments: Approved 3 Feb 2006
Writeuphelp
Writeup from MB 90:

Northwest Africa 1929

Morocco

Find: May 2003

Achondrite (howardite)

History: A 922.2 g, partially crusted, complete stone was purchased in Erfoud, Morocco, in May 2003.

Petrography: (T. Bunch and J. Wittke, NAU ) A breccia of 72 vol% cumulate eucrite clasts, 8% subophitic clasts, 14% diogenites, and 6% melt clasts. Pervasive solid-state recrystallization of plagioclase and pyroxenes with localized melt pockets and veins in clasts.

Geochemistry: Coarse-grained gabbroic eucrite: Pyroxene (Fs45–40Wo7–20); plagioclase (An91.2–95.3); metal (Ni = 0.97; Cr = 0.87 [both wt%]). Diogenite: Pyroxene (Fs43–54Wo2.5–3.6; Fe/Mn = 36, 37).

Classification: Achondrite (howardite); high shock.

Specimens: A 22.02 g type specimen is on deposit at NAU. Farmer holds the main mass.

Data from:
  MB90
  Table 2
  Line 9:
Place of purchase:Erfoud, Morocco
Date:May 2003
Mass (g):922.2
Pieces:1
Class:How
Shock stage:High
Classifier:J. Wittke and T. Bunch
Type spec mass (g):22.02
Type spec location:NAU
Institutions
   and collections
NAU: Geology, Bldg 12 Knoles Dr Northern Arizona University, Flagstaff, AZ 86011, United States; Website (institutional address; updated 12 Apr 2012)
Farmer: Michael Farmer, P.O. Box 86059, Tucson, AZ 85754-6059, United States; Website (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 90, MAPS 41, 1383-1418 (2006)
Find references in NASA ADS:
Find references in Google Scholar:
Photos:
CreditPhotos
Photos from the Encyclopedia of Meteorites:
Shinishi Kato   
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Astro-Piet   
David Hardy   
David L. Ribeca   
Dirk Hohmann         
Gerald Armstrong      
Gregor H.   
Jay Piatek   
Michael S. Scherman      
Rene Schmit   
Robert Zdancewicz   
Volker Heinrich   
Woreczko Jan & Wadi   
Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1133 approved meteorites from Morocco (plus 12 unapproved names)

Direct link to this page