Nice "skipper" bolide, eh? Like the Grand Teton photo...
There must've been something very interesting on that train to have the
camera rolling
-Richard M
----- Original Message -----
From: "Michael Farmer" <[email protected]>
To: "Matson, Robert D." <[email protected]>
Cc: "Meteorite List" <[email protected]>
Sent: Thursday, August 29, 2013 11:38 AM
Subject: Re: [meteorite-list] Chelyabinsk: six months of eBay sales
That is amazing work Robert, I would love to see it.
Millions were spent on Chelyabinsk worldwide, that's for sure.
The mexico event last week could easily have been just as large or larger
based on the videos so far released, but it seems most likely the
meteoroid skipped back out into space!
It would have been amazing to have had to massive events in the same year,
must like Allende and Murchison in 69.
Michael Farmer
Sent from my iPad
On Aug 29, 2013, at 11:26 AM, "Matson, Robert D."
<[email protected]> wrote:
Hi All,
If anyone is interested, for the past 6 months I've been compiling the
closing prices, masses and sellers of eBay Chelyabinsk meteorite sales
in an Excel spreadsheet. The dataset is quite large now (1250 points)
and includes all eBay sales of Chelyabinsk masses greater than or equal
to 3 grams. (Best-offer sales were not included since that price is not
reported by eBay.) There were a few sales that did not provide masses
(though clearly higher than my 3-gram cutoff), but since I was
interested
in tracking the price-per-gram metric, I excluded them.
A summary:
Total auctions: 1250
Period covered: 2/27/2013 - 8/28/2013
Total mass: 22192.6 grams
Total cost: $248,393
Average price-per-gram: $11.19
Since price-per-gram obviously depends a great deal on the quality of
the specimen (percentage of crust, overall shape, degree of weathering,
whether IMB or not, evidence of orientation, presence of flow lines or
roll-over lips, etc.) I tried to add notes for each sale estimating the
percentage of crust, presence of weathering, whether the specimen
appeared to be an IMB, or anything else I thought relevant.
If enough people are interested in the spreadsheet, rather than email it
individually to each person perhaps someone can host it for me.
Having spent over 30 hours over the last 6 months compiling all this
data, I probably won't continue to update it much longer. I figured
the nearly quarter-million-dollar sales mark was a good hopping off
point to mention it on the List. I think you'll find the master plot
of the PPG over time quite interesting, and I wouldn't be surprised if
this is the most detailed price history of a meteorite ever constructed.
Best wishes,
Rob
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