header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 18 May 2022
Search for: Search type: Search limits: Display: Publication:
Names
Text help
Places
Classes
Years
Contains
Starts with
Exact
Sounds like
NonAntarctic
Falls  Non-NWAs
What's new
  in the last:
Limit to approved meteorite names
Search text:  
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:
Recommended:  CVred3    [explanation]

This is 1 of 16 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 Meteoritical Bulletin, no. 110, in preparation (2021)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8402 approved meteorites from (Northwest Africa) (plus 1899 unapproved names)

Direct link to this page