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Northwest Africa 4685
Basic information Name: Northwest Africa 4685
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 4685
Observed fall: No
Year found: 2007
Country: (Northwest Africa)
Mass:help 1244 g
Classification
  history:
Recommended:  CVox3    [explanation]

This is 1 of 14 approved meteorites classified as CVox3.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CV chondrites, and CV-CK clan chondrites
Comments: Approved 28 Aug 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 4685 (NWA 4685)

(Northwest Africa)

Find: 2007

Classification: Carbonaceous chondrite (CVox3)

Physical characteristics: One piece of 660 g + 1 piece of 155.2 g + 48 smaller individuals and fragments. Cut face reveals large chondrules and CAIs.

Petrography: (J. Gattacceca, CEREGE) Millimeter-sized chondrules and CAIs (to 5 mm) set in an abundant (~30 vol%) fine-grained, iron-rich matrix. Abudant magnetite and sulfides, rare metal.

Geochemistry: Average Ni in sulfides 15.7 wt%

Classification: Carbonaceous chondrites (CVox3). CVox group based on the Ni content of sulfides Gattacceca et al., 2020.

Specimens: Type specimen at CEREGE. Main mass with Norbert Kammel

Bibliography:
  • Gattacceca J.,Bonal L.,Sonzognia C., and Longereya J. (2020) CV chondrites: More than one parent body. Earth Planet. Sci. Letts. 547, 116467. (link)
Data from:
  MB110
  Table 0
  Line 0:
Date:2007
Mass (g):1244
Pieces:50
Class:CVox3
Fayalite (mol%):5.9±3.1 (n=4)
Ferrosilite (mol%):2.9±1.6 (n=3)
Wollastonite (mol%):1.1±0.2
Magnetic suscept.:4.41
Classifier:J. Gattacceca, CEREGE
Type spec mass (g):26
Type spec location:CEREGE
Main mass:Norbert Kammel
Finder:anonymous
Comments:Submitted by Jerome Gattacceca
Institutions
   and collections
CEREGE: CEREGE BP 80 Avenue Philibert, Technopole de l'Arbois 13545 Aix-en-Provence Cedex 4 France, France (institutional address; updated 29 Oct 2018)
Catalogs:
References: Published in Meteoritical Bulletin, no. 110, in preparation (2021)
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)
Aeroliths Collection Theodossiou   
Gerald Armstrong   
Mirko Graul      
Woreczko Jan & Wadi   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8037 approved meteorites from (Northwest Africa) (plus 1947 unapproved names)

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