Meteoritical Bulletin: Entry for Northwest Africa 4685

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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: 1244 g

Classification
history:

Recommended:

CVox3 [explanation]

This is 1 of 22 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

Writeup

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:
Find references in Google Scholar:

Photos:

Credit	Photos
Photos uploaded by members of the Encyclopedia of Meteorites. (Caution, these are of unknown reliability)
Aeroliths Collection Theodossiou	Photo added 19 Apr 2022
Gerald Armstrong	Photo added 19 Apr 2022
Mirko Graul	Photo added 19 Apr 2022 Photo added 19 Apr 2022
Woreczko Jan & Wadi	Photo added 19 Apr 2022

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 8394 approved meteorites from (Northwest Africa) (plus 1899 unapproved names)

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