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Northwest Africa 4838
Basic information Name: Northwest Africa 4838
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 4838
Observed fall: No
Year found: 2006
Country: (Northwest Africa)
Mass:help 28 g
Classification
  history:
Recommended:  CV3    [explanation]

This is 1 of 448 approved meteorites classified as CV3.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CV chondrites, and CV-CK clan chondrites
Comments: Approved 7 Jun 2018
Writeuphelp
Writeup from MB 107:

Northwest Africa 4838 (NWA 4838)

(Northwest Africa)

Purchased: 2006

Classification: Carbonaceous chondrite (CV3)

History: Purchased by Marcin Cimala in 2006 from a dealer in Erfoud, Morocco, and subsequently acquired by ROM.

Petrography: (A. Irving and S. Kuehner, UWS) Granular chondrules (apparent diameter 500±300 µm, N = 15) and fine-grained CAI are set in a very fine-grained matrix (~40 vol.%, black in thin section).

Geochemistry: Olivine (Fa0.1-37.9, N = 3), orthopyroxene (Fs0.4-0.5Wo1.0-0.9, N = 3), clinopyroxene (Fs1.0Wo28.0), Al-Ti-diopside (Fs0.8Wo59.0, Al2O3 = 19.9 wt.%, TiO2 = 2.0 wt.%).

Classification: Carbonaceous chondrite (CV3).

Specimens: All material from this stone including one polished thin section is at ROM.

Data from:
  MB107
  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%):0.1-37.9
Ferrosilite (mol%):0.4-0.5; 1.0; 0.8
Wollastonite (mol%):1.0-0.9; 28.0; 59.0
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):28
Type spec location:ROM
Main mass:ROM
Comments:Work name MC030; submitted by A. Irving
Institutions
   and collections
ROM: Royal Ontario Museum, 100 Queen's Park, Toronto, Ontario M5S 2C6, Canada (institutional address; updated 18 Oct 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)
Catalogs:
References: Published in Meteoritical Bulletin, no. 107, in preparation (2018)
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Photos:
CreditPhotos
Photos from the Encyclopedia of Meteorites:
Polandmet      
Public domain photographs:
A. Irving   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6275 approved meteorites from (Northwest Africa) (plus 2026 unapproved names)

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