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Northwest Africa 4839
Basic information Name: Northwest Africa 4839
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 4839
Observed fall: No
Year found: 2006
Country: (Northwest Africa)
Mass:help 28 g
Classification
  history:
Recommended:  CV3    [explanation]

This is 1 of 539 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 4 Jul 2020
Writeuphelp
Writeup from MB 109:

Northwest Africa 4839 (NWA 4839)

(Northwest Africa)

Purchased: 2006

Classification: Carbonaceous chondrite (CV3)

History: Purchased by Marcin Cimała in 2006 from a dealer in Erfoud, Morocco.

Petrography: (A. Irving, UWS and J. Boesenberg, BrownU; T. Bunch and J. Wittke, NAU) Well-formed chondrules (apparent diameter 980±450 µm, N = 24) and very fine grained CAI are set in a fine grained opaque matrix (~35 vol.%, black in thin section).

Geochemistry: Olivine (Fa18.7±17.3, range Fa0.5-45.7, N = 9), low-Ca pyroxene (Fs1.5±0.5Wo0.7±0.2, range Fs1.1-2.1Wo0.5-0.9, N = 3), diopside (Fs1.0±0.1Wo44.7±2.0, range Fs0.9-1.1Wo43.2-46.1, N = 2).

Classification: Carbonaceous chondrite (CV3).

Specimens: 6.0 g including one polished thin section at PSF; remainder with Mr. M. Cimała.

Data from:
  MB109
  Table 0
  Line 0:
Place of purchase:Erfoud
Date:P 2006
Mass (g):28
Pieces:1
Class:CV3
Shock stage:S2
Weathering grade:low
Fayalite (mol%):18.7±17.3
Ferrosilite (mol%):1.5±0.5
Wollastonite (mol%):0.7±0.2
Classifier:A. Irving, UWS, and J. Boesenberg, BrownU
Type spec mass (g):6.0
Type spec location:PSF
Main mass:M. Cimala
Comments:Work name MC031; submitted by A. Irving
Institutions
   and collections
NAU: Geology, Bldg 12 Knoles Dr Northern Arizona University, Flagstaff, AZ 86011, United States; Website (institutional address; updated 12 Apr 2012)
PSF: Planetary Studies Foundation,10 Winterwood Lane, Unit B, Galena, Illinois 61036-9283, United States; Website (institutional address; updated 1 Dec 2011)
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
BrownU: Brown University Providence, RI 02912, United States (institutional address; updated 7 Sep 2019)
Catalogs:
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
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Photos:
CreditPhotos
Photos from the Encyclopedia of Meteorites:
Polandmet      
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Mirko Graul   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7377 approved meteorites from (Northwest Africa) (plus 1955 unapproved names)

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