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Northwest Africa 4294
Basic information Name: Northwest Africa 4294
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 4294
Observed fall: No
Year found: 2006
Country: (Northwest Africa)
Mass:help 84.2 g
Meteoritical Bulletin:  MB 92  (2007)  OC3
Recommended:  OC3    [explanation]

This is 1 of 10 approved meteorites classified as OC3.   [show all]
Search for other: Ordinary chondrites, Ordinary chondrites (type 3)
Comments: Approved 24 Jul 2007
Writeup from MB 92:

Northwest Africa 4294

Morocco or Algeria

Find: February 2006

Ordinary chondrite (type 3)

History: Purchased from a Moroccan dealer at the Tucson Gem and Mineral Show by A. Hupé in February 2006.

Physical characteristics: A single 84.2 g light brown stone lacking fusion crust and with abundant, large chondrules.

Petrography: (A. Irving and S. Kuehner, UWS): Closely packed PO and POP chondrules with a mean diameter 1.2 mm.Chondrules contain accessory phases including Cr-bearing clinopyroxene, chromite, partially altered kamacite, taenite, troilite and terrestrial barite. The content of metal (+ minor Fe hydroxide) is very low (mode determined by BSE imaging of a whole thin section is 3 vol%).

Geochemistry: Olivine (mostly Fa2-25, with rim compositions up to Fa95) Oxygen Isotopes: (D. Rumble, CIW) Analyses of two acid-washed whole rock fragments by laser fluorination gave, respectively, δ18O = 5.38, 5.31; δ17O = 3.34, 3.23; Δ17O = 0.508, 0.443 (all ‰). These oxygen isotopic compositions are closer to the TFL than to those of H chondrites and far removed from those of LL chondrites.

Classification: Ordinary chondrite (type 3); S1, W2.

Specimens: A total of 22 g of sample and one polished thin section are on deposit at UWS. AHupé holds the main mass.

Data from:
  Table 2
  Line 24:
Place of purchase:Tucson, Arizona, USA
Mass (g):84.2
Class:OC (type 3)
Type spec mass (g):22
Plots: O isotopes:  
   and collections
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
CIW: Carnegie Insitution Washington, Geophysical Laboratory, 5251 Broad Branch Rd., NW, Washington DC 20015, United States (institutional address)
References: Published in Meteoritical Bulletin, no. 92, MAPS 42, 1647-1694 (2007)
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Photos from the Encyclopedia of Meteorites:
Main mass. The Hupe Collection   
The Hupe Collection   
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Don Cuarzo   
Gerald Armstrong Photo added 20 Oct 2022

     This is 1 of 8777 approved meteorites from (Northwest Africa) (plus 1879 unapproved names)

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