[meteorite-list] Bull's-eye chondrule assumptions

Göran Axelsson axelsson at acc.umu.se
Wed Mar 16 18:12:40 EST 2005


Me to!  Me too!

  :-)

I also have one of these plated "pacman" condrules in a NWA 869. 
Actually my first
meteorite and my first cut. I also have an armored condrule in the same cut.
http://www.meteorite.neab.net/pictures/meteorite-0001.jpg

I really like the NWA 869 meteorite, it got everything in it.

/Göran

Darren Garrison wrote:

>On 16 Mar 2005 21:48:50 UT, bernd.pauli at paulinet.de wrote:
>
>  
>
>>The process that gave birth to such chondrules may have been either
>>accretionary or condensational and the environment may have been
>>dusty (which would point to early solar system processes).
>>    
>>
>
>Especially interesting is the chondrule on the left side of this image:
>
>http://www.austromet.com/collection/NWA_1806_23.3g_A.jpg
>
>It has a "bite" taken out of it (possibly a micro impact crater-- I call those "Pac-man chondrules")
>and then the "skin" has formed on top of that, conforming to the shape of the "bite"-- so obviously
>the "skin" formed after the bite, and thus after the chondrule formed.
>
>I have a similar coated Pac-man chondrule in a piece of 869.  You can't tell it too well in this
>photo, but, like the piece above, there is a bite/microcrater in the chondrule and there is a thin
>white rind or skin conformed around the shape of the chondule which had to form after the "bite".  
>
>http://webpages.charter.net/garrison6328/pacman.jpg
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