[meteorite-list] What does Shock Stage 6 look like?

From: j.divelbiss_at_att.net <j.divelbiss_at_meteoritecentral.com>
Date: Thu Apr 22 10:18:04 2004
Message-ID: <122520031814.17449.6907_at_att.net>

To clarify...there is some shock line evidence...small cracks here and there
with a couple chondrules cracked in half.

John



> Hello all,
>
> I'm looking at a few slices of some unclassified NWA meteorites sent to me
> from another list member to help him try to identify a few, and one of them
> has a very strange makeup to it. It is a meteorite first off. Nice fusion
> crust is evident on the back of this end piece. Not much weathering...a bit
> of a stained rind but hardly noticeable.
>
> It is a chondrite or related because it has a few distinct black porophrytic
> chondrules...but the rest of the matrix is igneous looking filled with long
> lathes of lighter glass which is darkened by other minerals that must include
> magnetite. No metal is evident, but it is paramagnetic...not strong but more
> than most LL's for sure. No veins or shock lines are evident.
>
> If had not seen chondrules I would be sure it was a planetary basalt or
> similar. What is it?
>
> Could this be a highly shocked and blackened L6 or LL6, or maybe more like
> the same for a CK6. Or maybe something new...another primitive chondrite/or

> some kind of transitional material that it unique?
>
> The lack of metal visually along with it's decent paramagnetism is strange.
>
> As I said in my subject line "What does a shock stage 6 look like?"
>
> I'll add one more "Has anyone seen a chondrite with an igneous looking
> texture?" I would love to thin section this baby. It is so strange.
>
> John
>
>
>
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Received on Thu 25 Dec 2003 01:14:01 PM PST