[meteorite-list] impact melts

[stan .]

what about the F chonderite inclusions in aubrites, specifically cumberland 
falls - is that a xenolith of unrelated material, or is it unmelted 
precursor material?

and dont forget chondrules in polymict ureilites! :)


>From: j.divelbiss at att.net
>To: "stan ." <laser_maniac at hotmail.com>, 
>info at meteorites.com.au,fprochaska at verizon.net, 
>meteorite-list at meteoritecentral.com
>Subject: Re: [meteorite-list] impact melts
>Date: Wed, 06 Apr 2005 20:21:57 +0000
>
>Stan and others,
>
>Acapulcoites, Brachinites, Lodranites, and Winonaites have been thought of 
>as being "primitive" achondrites that may have chondrules, especially 
>acapulcoites.  I've always thought of these as being "tweeners" in between 
>chondrites and achondrites....differentiated a lot, but not quite absent of 
>chondritic characteristics like remnant chondrules. Their age signature is 
>still from longggg ago.
>
>I agree (IMHO) with others to say that impact melting alone does not make 
>an achondrite. It is primarily a function of differentiation.
>
>John
>
>
>-------------- Original message from "stan ." <laser_maniac at hotmail.com>: 
>--------------
>
>
> >
> >
> > >
> > >Achondrites - (a-kon-drites) meteorites whose composition has been
> > >significantly altered from the early/primative chondritic material.
> > >Chondrules are not present.
> >
> > you cant say that because some achonderites contain chondrules - i have 
>an
> > end cut of dhofar 125, an acapulcoite that has a chondrule or two 
>visable
> >
> >
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