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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
Classification
  history:
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
Writeuphelp
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:
  MB92
  Table 2
  Line 24:
Place of purchase:Tucson, Arizona, USA
Date:Feb-2006
Mass (g):84.2
Pieces:1
Class:OC (type 3)
Type spec mass (g):22
Plots: O isotopes:  
Institutions
   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)
Catalogs:
References: Published in Meteoritical Bulletin, no. 92, MAPS 42, 1647-1694 (2007)
Find references in NASA ADS:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9368 approved meteorites from (Northwest Africa) (plus 1875 unapproved names)

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