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NWA 4471 Graphite Bearing Ureilite Meteorite 3.60g - Diamond-Rich

Name: Northwest Africa 4471
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 4471
Observed fall: No
Year found: 2006
Country: (Northwest Africa)
Mass:help 881 g

State/Prov/County: Tagounite
Date: Jun-2006
Mass (g): 881
Pieces: 1
Class: Ureilite
Fayalite (mol%): 22.4
Ferrosilite (mol%): 17.4
Wollastonite (mol%): 12
Classifier: A. Irving and S. Kuehner, UWS
Type spec mass (g): 20.4
Type spec location: UWS
Main mass: GHupé

NWA 4471 Graphite Bearing Ureilite Meteorite 3.60g

 

Diamond-Rich!

 

3.60 gram fragment from NWA 4471, a very rare and interesting graphite-bearing Ureilite found in Northwest Africa in 2006.  When this meteorite was first cut, it destroyed a diamond blade within 3 seconds indicating we had a very diamond-rich Ureilite on our hands.  Needless to say, cutting a meteorite like this can be very time-consuming and expensive.  A Total Known Weight (TKW) of 881 grams is recorded for this find.  This specimen comes with an identification card from The Hupé Collection. 

 

Here is the brief classification report from the University of Washington:

 

Northwest Africa 4471 (NWA 4471)

Purchased Morocco 2006

Graphite-Bearing Ureilite

 

Predominantly olivine (~Fa15) and low-Ca pyroxene (both with reduced, Mg-rich rims containing kamacite blebs).  Fairly abundant graphite blades.

8900元台幣

下圖為4.71克

10000元台幣



 
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