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Northwest Africa 11906
Basic information Name: Northwest Africa 11906
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11906
Observed fall: No
Year found: 2018
Country: (Northwest Africa)
Mass:help 84.8 g
Classification
  history:
Meteoritical Bulletin:  MB 107  (2018)  CO3.0
Recommended:  CO3.0    [explanation]

This is 1 of 22 approved meteorites classified as CO3.0.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CM-CO clan chondrites, and CO chondrites
Comments: Approved 31 Aug 2018
Writeuphelp
Writeup from MB 107:

Northwest Africa 11906 (NWA 11906)

(Northwest Africa)

Purchased: 2018

Classification: Carbonaceous chondrite (CO3.0)

History: Purchased by Matthew Stream from Tindouf, Algeria, April 2018.

Physical characteristics: Single stone, partially covered in dark fusion crust with polygonal cracks. Broken surface reveals gray, fined-grained interior, with many small chondrules visible, scattered small CAIs were observed.

Petrography: (C. Agee, UNM) This meteorite consists of numerous small chondrules set in a fine-grained matrix. The matrix makes up approximately 40% of this meteorite. Mean apparent chondrule size 200±175 μm, n=50.

Geochemistry: (C. Agee, UNM) Olivine Fa14.0±14.6, Cr2O3=0.37±0.15 (wt%), n=18; low-Ca pyroxene Fs2.3±1.2Wo3.4±0.5, n=4.

Classification: Carbonaceous chondrite (CO3.0), 3.0 based on the Cr2O3 content and 1-sigma in olivine (Grossman and Brearley, 2005).

Specimens: 17.3 g including a probe mount on deposit at UNM, Matthew Stream holds the main mass.

Data from:
  MB107
  Table 0
  Line 0:
Place of purchase:Algeria
Date:P 2018
Mass (g):84.8
Pieces:1
Class:CO3.0
Shock stage:low
Weathering grade:low
Fayalite (mol%):14.0±14.6
Ferrosilite (mol%):2.3±1.2
Wollastonite (mol%):1.7±1.4
Classifier:C. Agee, UNM
Type spec mass (g):17.3
Type spec location:UNM
Main mass:Matthew Stream
Comments:Field name MAS-2; submitted by C. Agee, UNM
Institutions
   and collections		 UNM: Institute of Meteoritics MSC03 2050 University of New Mexico Albuquerque NM 87131-1126 USA, United States; Website (institutional address; updated 12 Feb 2015)
Catalogs:
References: Published in Meteoritical Bulletin, no. 107, MAPS 55, 460-462
Find references in NASA ADS:
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Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Christophe PICQ   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9111 approved meteorites from (Northwest Africa) (plus 1873 unapproved names)

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