[meteorite-list] what is the most primitve meteorite?

[Dark Matter]

Hi Alex,

Ahhh Krymka. One of my favorites.

Here's a pair of pics of my slice:

http://www.meteorite.com/MT_links/2003/March/1krymka.jpg

http://www.meteorite-times.com/Back_Links/2002/December/2specimen01.jpg

I got to visit Semarkona at the Smithsonian. It is a spiritual
experience. I sent my pics to Joel in NZ for a Meteorite! article back
in 1998 and have yet to make new ones. Those were back in the film
days.

Cheers,

Martin



On Tue, Apr 15, 2008 at 6:00 PM, Alexander Seidel <gsac at gmx.net> wrote:
> Has any SEMARKONA [Indian fall of 1940, type LL3.0 (S2)] ever been distributed to private collectors??? I very much doubt so. One of
>  the "next best" primitive meteorites from Jeff´s first category,
>  which has surely arrived at the collector´s scene, is the KRYMKA
>  meteorite [Ukrainian fall of 1946, LL3.1 (S3)].
>
>  Yep, got my piece of this wonderful, pristine meteorite. :-)
>  Alex
>  Berlin/Germany
>
>
>  > 1) It means that the meteorite was relatively unaffected by secondary
>  > processes that occurred on asteroids, including thermal metamorphism,
>  > melting, shock effects, and aqueous alteration.  These meteorites are
>  > the chondrites whose chondrules, CAIs, matrix, and presolar grains
>  > are in the most pristine condition.  In this sense, the most
>  > primitive ordinary chondrite is Semarkona. There are several very
>  > primitive carbonaceous chondrites, including Acfer 094,  Adelaide,
>  > ALHA 77307, and a few CR chondrites.  Most of the meteorites people
>  > have mentioned in this thread are not particularly primitive by this
>  > definition.
>
>
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