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Natural Science Forum / Earth Science / Mineralogy / December 2005



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Waiting for STARDUST return

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jacques jedwab - 07 Dec 2005 13:49 GMT
Magnetite platelets in the Orgueil carbonaceous meteorite
¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
Set of pictures made under the scanning electron microscope of
magnetites separated from the Orgueil carbonaceous meteorite:

http://www.ulb.ac.be/sciences/orgueuil_magnetite¨

Hopefully also present in STARDUST dust collection (return on earth
scheduled on Jan. 06, 2006)

Early cosmic dust pictures
¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
Reproduction of, and comments on, the pictures of "cosmic dust"
collected during H.M.S. CHALLENGER's expedition (1873-1876), and
published in 1891 in the "Deep Sea Deposits" vol. (Drawn by the
Belgian petrographer Alphonse Renard:

http://www.ulb.ac.be/sciences/cosmicdust.pdf

J.J.
jacques jedwab - 08 Dec 2005 15:22 GMT
Oops! Please read .../sciences/orgueil_magnetite

J.J.

> Magnetite platelets in the Orgueil carbonaceous meteorite
> ¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
[quoted text clipped - 16 lines]
>
> J.J.
Aidan Karley - 09 Dec 2005 13:00 GMT
> Oops! Please read .../sciences/orgueil_magnetite

      Or even http://www.ulb.ac.be/sciences/orgueil_magnetite/ . Hunting
around I got lots of 404s until I Googled to it.
      From the intro :
> This set of images has already been published thirty four years ago,
> when one expected (wrongly) the abundant presence of platelet magnetites
[quoted text clipped - 8 lines]
> which will probably be  triggered when the first cometary dust captured
> by STARDUST will be returned to earth in January 2006

      Certainly very distinctive forms. Thanks JJ.
     
Signature

Aidan Karley FGS
Aberdeen, Scotland,
Location: 57°10'11" N,  02°08'43"  W (sub-tropical Aberdeen), 0.021233

 
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