[meteorite-list] Planet Meteorite Mailing List

From: Larry Lebofsky <lebofsky_at_meteoritecentral.com>
Date: Sun Aug 20 08:08:03 2006
Message-ID: <1156075636.44e85074ac7c8_at_hindmost.LPL.Arizona.EDU>

Hi Sterling:

Quick response to you about Ceres.

CI or CM (lots of work comparing Ceres to Murchison, but there are
differences).

Larry

Quoting "Sterling K. Webb" <sterling_k_webb_at_sbcglobal.net>:

> Hi, Geoff,
>
> Welcome to the...
>
> Yes, it really is The Meteorite List!
>
> There are usually a number of threads going at once, like
> the talk at a a good party in a room full of people. I listen,
> but I don't hear any. I figure everybody's busy, but if I'm
> filling a void, well, it's because there IS a void.
>
> But I get your point...
>
> Let's see... There should be a raft of postings about
> what the poster has for sale on eBay this week... Nope. At
> least three offers of a trade from... Nope. Hmm.. If we
> could only get two or even three pugnacious large-scale
> meteorite dealers to quarrel bitterly with each other, that'd
> be good for 30-50 postings.
>
> Nah, better not...
>
> It's the Dog Days of August. The dead slack bottom
> of the year. Paris is deserted because every French person
> in the known universe is on holiday. Most of humanity is
> huddled in a dark air-conditioned place...
>
> I know I am.
>
> Ok.
>
> METEORITE QUESTIONS!!
>
> If Vesta is made a Dwarf Planet, then any meteorite from
> Vesta, either directly chipped off Vesta, or by being chipped
> off a Vestoid that was itself chipped off Vesta, etc., etc., is now
> a PLANETARY METEORITE, like a Martian meteorite.
>
> Will that increase the value of a specimen of Vestan origin?
>
> Will Diogenites get pricier? Howardites? Eucrites?
>
> Does everybody who collected them get a free bump in
> market appreciation?
>
> Is anybody thinking of buying up more Vestan meteorites
> as just a good thing to get a stronger position in?
>
> Is that why the only other thread going is about IBITIRA,
> a really pretty non-cumulate non-brecciated Stannern eucrite,
> a chunk of the crust of a body that might well be designated
> a planet?
>
> Have dealers already raised their prices in anticipation of that?
>
> Did I just tip them to do it, and should I shut up in case
> they haven't figured that out yet?
>
> When the Dawn Mission gets to Vesta and does its science
> will there be any isotopic signature that would allow a seller or
> buyer of a specimen to determine that it really was from the
> Dwarf Planet Vesta? Like the way the Viking gas data made it
> possible to uniquely identify a Martian...
>
> And while we all know about Vesta as a source of metteorites
> that exist in our collections, what about Ceres (the most likely
> body to named a planet, I think)?
>
> The Dawn mission specifically states that one of the goals
> of the mission is to look for evidence of such a link:
>
> "No meteorites have unmistakably come from Ceres. Possibly
> the excavating events or dynamics that provided the HED meteorites
> did not occur at Ceres, but also possibly, the reflectance spectrum
> of the surface of Ceres is not indicative of its crustal rocks. Microwave
> studies suggest that Ceres is covered with a dry clay, in contrast to
> Vesta's basaltic dust layer that reflects its crustal composition. To
> determine if Ceres-derived meteorites are in our collections and to
> understand the origin of Ceres, we must travel there and obtain
> spatially resolved spectra inside fresh craters. We need to determine
> the geologic context for the HED meteorites from Vesta, and search
> for similar data for Ceres."
> http://dawn.jpl.nasa.gov/science/why.asp
>
> Ceres is big. Ceres has, in the Hubble imagery, what could be
> big impact craters that would have created as many or more meteorites
> than whatever cratered Vesta and sent the HED's our way. Ceres is only
> half an AU further away than Vesta. Ceresian meteorites if they get here,
> should be almost as common as Vestan. There may be Ceresian meteorites
> sitting in YOUR collection and you just don't know it. So,
>
> What meteorite type or group do you think is likely to be proved
> as coming from Ceres once we get the data from Dawn?
>
> Gee, would probably be carbonaceous... When's the last time
> one of THOSE fell?
>
> METEORITE list...
>
>
> Sterling K. Webb
> -----------------------------------------------------------------------
> ----- Original Message -----
> From: "Notkin" <geoking_at_notkin.net>
> To: "Meteorite List" <meteorite-list_at_meteoritecentral.com>
> Sent: Saturday, August 19, 2006 8:54 PM
> Subject: [meteorite-list] Planet Pluto Mailing List
>
>
> > Hi Everyone:
> >
> > My name is Geoff. I'm a meteorite hunter and collector.
> >
> > I accidentally subscribed myself to a listserve called "Is the Planet
> > Pluto Really a Planet Mailing List." It's been a very interesting
> > discussion, but I actually meant to subscribe myself to something
> > called the Meteorite Mailing List. Anyone heard of it or know where I
> > can find it?
> >
> >
> > Thanks in advance,
> >
> > Geoff N
> > www.aerolite.org
> >
> > ______________________________________________
> > Meteorite-list mailing list
> > Meteorite-list_at_meteoritecentral.com
> > http://six.pairlist.net/mailman/listinfo/meteorite-list
> >
>
> ______________________________________________
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>

-- 
Dr. Larry A. Lebofsky
Senior Research Scientist
Co-editor, Meteorite                      "If you give a man a fish,   
Lunar and Planetary Laboratory               you feed him for a day.
1541 East University                       If you teach a man to fish,
University of Arizona                        you feed him for a lifetime."
Tucson, AZ 85721-0063                                     ~Chinese Proverb
Phone:  520-621-6947
FAX:    520-621-8364
e-mail: lebofsky_at_lpl.arizona.edu

Received on Sun 20 Aug 2006 08:07:16 AM PDT