[meteorite-list] Planet Meteorite Mailing List

[Larry Lebofsky]

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