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Northwest Africa 4611
Basic information Name: Northwest Africa 4611
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 4611
Observed fall: No
Year found: 2006
Country: (Northwest Africa)
Mass:help 242 g
Meteoritical Bulletin:  MB 100  (2012)  CV3
Recommended:  CV3    [explanation]

This is 1 of 602 approved meteorites (plus 1 unapproved name) classified as CV3.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CV chondrites, and CV-CK clan chondrites
Comments: Approved 29 May 2012
Writeup from MB 100:

Northwest Africa 4611 (NWA 4611)

(Northwest Africa)

Purchased: May 2006

Classification: Carbonaceous chondrite (CV3)

History: The meteorite was found by an anonymous person in northwest Africa and bought by H. Strufe in Erfoud, Morocco.

Physical characteristics: One dark brown fragment, without fusion crust, weighing 242.1 g.

Petrography: Specimen is composed of abundant up to several-mm sized chondrules embedded in a dark brownish matrix. Refractory inclusions include whitish CAIs and irregularly shaped olivine amoeboids; metal is rare.

Geochemistry: Olivine, Fa0.2-10.6; pyroxene, Fs0.5-1. Oxygen Isotopes (I. A. Franchi and R. C. Greenwood, OU): δ17O = -3.302, δ18O = 1.321, Δ17O = -3.989 (all per mil).

Classification: Carbonaceous chondrite (CV3); S2, W2/3.

Specimens: 22 g plus one polished thin section are on deposit at MNB.

Data from:
  Table 1
  Line 1175:
Place of purchase:Erfoud, Morocco
Date:P May 2006
Mass (g):242.1
Shock stage:S2
Weathering grade:W2/3
Fayalite (mol%):1.2 (0.2-10.6)
Ferrosilite (mol%):0.8 (0.5-1)
Classifier:A. Greshake, MNB
Type spec mass (g):22
Type spec location:MNB
Main mass:H. Strufe
Comments:Submitted by Ansgar Greshake
Plots: O isotopes:  
   and collections
MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
OU: Planetary and Space Sciences Department of Physical Sciences The Open University Walton Hall Milton Keynes MK7 6AA United Kingdom, United Kingdom (institutional address; updated 8 Dec 2011)
References: Published in Meteoritical Bulletin, no. 100, MAPS 49, E1-E101 (2014)
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     This is 1 of 8904 approved meteorites from (Northwest Africa) (plus 1871 unapproved names)

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