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Northwest Africa 4694
Basic information Name: Northwest Africa 4694
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 4694
Observed fall: No
Year found: 2007
Country: (Northwest Africa)
Mass:help 670 g
Classification
  history:
Meteoritical Bulletin:  MB 110  (2022)  CVred3
Recommended:  CVred3    [explanation]

This is 1 of 48 approved meteorites classified as CVred3.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CV chondrites, and CV-CK clan chondrites
Comments: Approved 11 Dec 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 4694 (NWA 4694)

(Northwest Africa)

Purchased: 2007

Classification: Carbonaceous chondrite (CVred3)

History: The meteorite was purchased from a local meteorite dealer in Erfoud, Morocco.

Physical characteristics: Dark brownish rock without fusion crust.

Petrography: Carbonaceous chondrite composed of sharply defined chondrules (mean diameter about 900 µm), CAIs (up to 4 mm), and olivine amoeboids all set into a fine-grained dark brownish matrix. Opaque phases are metal and sulfides. Most chondrules show reddish staining due to terrestrial weathering.

Geochemistry: Ni in sulfides <0.12 wt%, N=5

Classification: Carbonaceous chondrite (CVred3). Reduced subgroup based on low concentrations of Ni in sulfides, Gattacceca et al. (2020).

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:
Place of purchase:Erfoud, Morocco
Date:P 2007
Mass (g):670
Pieces:1
Class:CVred3
Shock stage:S2
Weathering grade:high
Fayalite (mol%):8.4±9.3 (0.3-36.2, n=21)
Ferrosilite (mol%):1.2±0.2 (1.0-1.5, n=16)
Wollastonite (mol%):0.9±0.2 (0.6-1.2, n=16)
Classifier:A. Greshake, MNB
Type spec mass (g):20
Type spec location:MNB
Main mass:Hanno Strufe
Comments:Submitted by Ansgar Greshake
Institutions
   and collections
MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
Catalogs:
References: Published in Gattacceca J., McCubbin F.M., Grossman J., Bouvier A., Chabot N.L., D'Orazio M., Goodrich C., Greshake A., Gross J., Komatsu M., Miao B., and Schrader D. (2022) The Meteoritical Bulletin, No. 110. Meteorit. Planet. Sci. 1-4
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9627 approved meteorites from (Northwest Africa) (plus 1865 unapproved names)
Also see:
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Revision
  history:
  This lists important revisions made to data for this record.

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