AW: Re-2: [meteorite-list] Moss Meteorite From A Comet?

[E.P. Grondine]

Hi Martin, 

That's news to me.  I don't have the URL at hand to
give you for the initial study, but the isotopic
evidence the U Wurzburg team presented then was pretty
good.

I have not seen any refutations yet - I may have
missed them.  Do you have a URL handy for them?

good hunting, 
Ed

--- Martin Altmann <altmann at meteorite-martin.de>
wrote:

> Hi Ed,
> 
> not to dissapoint you,
> but since decades the Chiemgau-impact is brought up
> again and again,
> though until now not a sinlge scientific relevant
> proof was found or
> delivered, neither for the presumed impact pits and
> craters,
> nor for the recovered samples, which turned out to
> be terrestrial.
> 
> Best!
> Martin
> 
> -----Ursprüngliche Nachricht-----
> Von: meteorite-list-bounces at meteoritecentral.com
> [mailto:meteorite-list-bounces at meteoritecentral.com]
> Im Auftrag von E.P.
> Grondine
> Gesendet: Montag, 21. August 2006 15:53
> An: meteorite-list at meteoritecentral.com
> Betreff: Re: Re-2: [meteorite-list] Moss Meteorite
> From A Comet?
> 
> Hi Larry, List - 
> 
> It appears we have at least one other comet sample:
> Cheimgau.
> 
> good hunting,
> Ed
> 
> 
> --- Larry Lebofsky <lebofsky at lpl.arizona.edu> wrote:
> 
> > Hi all:
> > 
> > Defending Tim Swindle and Humberto Campins. I have
> > known them for years and 
> > they are very conservative scientists. Their work
> is
> > good and they are well-
> > respected scientists. They do not go off (too
> often)
> > to make wild, 
> > unsubstantiated, claims., hence, the conclusions
> in
> > their article. They based 
> > their Meteorite paper (and their original
> scientific
> > paper) on what we know. 
> > We have observations of many comets (Campins has
> > done a lot of this), but we 
> > have "samples" from only one comet (Halley), are
> > just now studying Stardust 
> > material (so too early to say much), and IDPs
> which
> > are thought to be, at 
> > least in part, cometary in origin.
> > 
> > Clearly, we need multiple samples from multiple
> > comets --- good luck in our 
> > lifetime. Therefore you base your "theories" on
> the
> > existing information, not 
> > onwhat you hope to have in the future. That is why
> > people propose new missions 
> > to comets and asteroids!
> > 
> > We know that not all comets are the same based on
> > our observations and where 
> > we think they came from. Some of this may be
> because
> > of how many times they 
> > have been close to the Sun, some may have to be
> > related to where they came 
> > from (Kuiper Belt or Oort cloud), and some may
> have
> > to do with where they were 
> > formed (which may not have been where we see them
> > coming from). Clearly, a 
> > chunk of a "fresh" comet would look very different
> > from a "dead" comet. Or, as 
> > been on this listserv recently, could we tell the
> > difference between a chunk 
> > of a comet or a piece of Ceres? I am not sure I
> > would be willing to say 
> > anything in print even though I have studied Ceres
> > for years. What, from 
> > either, would we expect to make it through the
> > atmosphere?
> > 
> > Even if we were to bring back samples from two or
> > three comets, I doubt if 
> > anyone I know would be willing to say (with
> respect
> > to the composition of 
> > comets) that that was their "final answer." That
> is
> > the nature of science.
> > 
> > I really have to stop writing these a 5:00 in the
> > morning, no breakfast and no 
> > soffee, but this is the quiet time of the day.
> > 
> > Larry
> > 
> > 
> > 
> > Quoting bernd.pauli at paulinet.de:
> > 
> > > "Comets ... being 'primitive material' ... we
> > would need
> > >  to have known multiple samples of multiple
> comets
> > before
> > >  we could say for sure."
> > > 
> > > Hi Mark and List,
> > > 
> > > I couldn't agree more and that's why I felt a
> bit
> > uneasy when I read
> > > Campins' and Swindle's article in this issue of
> > our METEORITE magazine:
> > > 
> > > CAMPINS H. and SWINDLE T.D.(2006) Where are the
> > cometary
> > > meteorites? (Meteorite, May 2006, Vol. 12, No.2,
> > pp. 17-19).
> > > 
> > > They solely refer repeatedly to Comet Halley and
> > to Halley dust (plus to
> > > cometary IDPs). Many more comets need to be
> > sampled before we can draw
> > > definite conclusions!
> > > 
> > > Best,
> > > 
> > > Bernd
> > > 
> > > ______________________________________________
> > > Meteorite-list mailing list
> > > Meteorite-list at meteoritecentral.com
> > >
> >
>
http://six.pairlist.net/mailman/listinfo/meteorite-list
> > > 
> > 
> > 
> > ______________________________________________
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> >
>
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> > 
> 
> 
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