[meteorite-list] impact melts

From: j.divelbiss_at_att.net <j.divelbiss_at_meteoritecentral.com>
Date: Wed Apr 6 17:05:51 2005
Message-ID: <040620052105.4725.42544F28000EBC690000127521602807489C9C070D040A90070BD206_at_att.net>

Stan,

Well heck then...I don't know THAT much about these things. :)

Good luck,

JD





-------------- Original message from "stan ." <laser_maniac_at_hotmail.com>: --------------


> 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 ." ,
> >info_at_meteorites.com.au,fprochaska@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 ." :
> >--------------
> >
> >
> > >
> > >
> > > >
> > > >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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Received on Wed 06 Apr 2005 05:05:46 PM PDT