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Northwest Africa 1232
Basic information Name: Northwest Africa 1232
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 1232
Observed fall: No
Year found: 2001
Country: Morocco
Mass:help 1900 g
Classification
  history:
Meteoritical Bulletin:  MB 93  (2008)  CO3
Recommended:  CO3    [explanation]

This is 1 of 523 approved meteorites classified as CO3.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CM-CO clan chondrites, and CO chondrites
Comments: Approved 14 Jan 2008
Revised 21 Jun 2009: added missing paragraph from writeup
Writeuphelp
Writeup from MB 93:

Northwest Africa 1232                                                                                        

Morocco

Find: May 2001

Carbonaceous chondrite (CO3)

History: In May 2001 B. Fecay and C. Bidaut purchased the stone in Zagora, Morocco.

Physical characteristics:  A single piece weighing 1900 g.  Approximately 40 % of its surface is covered by fusion crust.

Petrography: (M. Kiriishi and K. Tomeoka, UKobe) Two different lithologies separated by a sharp boundary; lithology A is dark gray, lithology B is light gray. Both lithologies contain well defined chondrules set in a fine-grained matrix. Lithology A consists of ~ 53% chondrules, ~ 2% CAIs, and ~ 7% AOIs (all vol%), whereas lithology B consists of ~ 50% chondrules, ~ 3% CAIs, and ~ 5% AOIs (all vol%). Chondrules in lithology A range in apparent diameter from 50-510 mm with an average of ~ 128 mm, whereas those in lithology B range from 50-500 mm (average ~ 147 mm).

Mineral compositions and geochemistry: Lithology A: Chondrule olivine (Fa3–Fa20; mean Fa11). CAI minerals:
Spinel (mean Hc33), anorthite (An99), melilite and minor nepheline. Lithology B: Chondrule olivine (Fa15–Fa40; mean Fa30), CAI minerals: Spinel (mean Hc51), diopside (En51Wo49), fassaite, minor nepheline.
Classification: Carbonaceous chodrite (CO3).

Type specimens: A total of 52 g are on deposit at UKobe. Fectay holds the main mass.

Submitted by: K. Tomeoka, UKobe.

Data from:
  MB93
  Table 2
  Line 2:
Place of purchase:Zagora, Morocco
Date:01-May-08 [sic]
Mass (g):1900
Pieces:1
Class:CO3
Type spec mass (g):52
Institutions
   and collections
UKobe: Curator, Antarctic Meteorite Research Center National Institute of Polar Research (NIPR) 10-3 Midori-cho, Tachikawa, Tokyo 190-8518, Japan, Japan; Website (institutional address; updated 13 Jan 2012)
Fectay: Bruno Fectay and Carine Bidaut, La Memoire de la Terre SARL, 39800 Aumont, France; Website (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 93, MAPS 43, 571-632 (2008)
Find references in NASA ADS:
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Photos:
CreditPhotos
Photos from the Encyclopedia of Meteorites:
Bruno Fectay and Carine Bidaut   
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
John Creech, Victoria University of Wellington   
Mark Vornhusen   
Mike Markowitz   
Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1407 approved meteorites from Morocco (plus 16 unapproved names) (plus 1 impact crater)

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