Dear Art,
I am trying again to post the message. Please let me know if this works.
Qing-zhu
(Joint message released from Qing-zhu Yin, Pierre Rochette, Ken Verosub)
To the past or future finders of Sutter's Mill stones (and more generally
to all meteorite hunters): please do not stick magnets on your finds!
This cause irremediable damage to their scientific value (erasing their
magnetic memory). Moreover it is a useless habit to recognize meteorites.
A lot of rare types are hardly attracted by magnet (R, some CV, CM, most
angrite, martian, lunar, HED.). The only interest we see for using a
magnet
is when you search a known ordinary chondrite strewn field. or iron
meteorite. A number of terrestrial rock (including the basalt gravels that
may look like Sutter's Mill) are well attracted by strong magnet.
Unfortunately we are seeing some pieces have been wiped with a magnet. For
those of you who can be sure that their SM piece has not been seeing a
magnet, please consider helping science by a loan of a small fragment. It
will be non-destructive analyses at UC Davis and it will be quick. It
takes
a few minutes to an hour.
We can quickly and easily look at the magnetization of any samples smaller
than 5-10 cc to determine which ones might not have been remagnetized by
collectors. Then we can try to do paleointensity studies on those
(meaning
how strong the magnetic field was 4.5 billion years ago in the nascent
solar system). We can also characterize the magnetic properties of any
sample, including ones that have been remagnetized. Most of these
measurements can be done quickly and easily without any chemical or
physical destruction of the material. We could do a quick screening and
decide which magnetic measurements made sense for each sample. They could
then decide which ones to leave with us for more analysis and which ones
they wanted to take back immediately.
In addition, there are a number of non-destructive analyses which could be
done: including X-ray computed tomography (to see through what is inside
as
done for human bodies). We (Denton Ebel and Qing-Zhu Yin) have already
done
work on two specimens (SM3 and SM9) and submitted a conference report on
May 29th. A few more are currently planned. We will need to do more of
these analyses. CT scan images and movies shall be shared with the owner
of
the samples. Those of you who want to see examples of those CT movies,
could come to my office and labs at UC Davis.
We also urgently need to do more of gamma ray counting of more specimens.
This will help us to determine the pre-atmospheric entry meteoroid size
before break up, among other information we could learn. These will
require
samples to travel overseas in deep underground facilities (either in North
Japan or Italian Alps). The equivalent facilities in US was shut down many
years ago due to funding situation unfortunately. The test time is
typically 1 month. The specimens will be shipped back and forth with FedEx
or any other insured carrier.
If people are interested in having these test done (no harm is done to the
specimens) but help science in big way, please have them contact me. See
my
contact information below.
All the information we have so far indicate the organic content of SM
meteorite is very very low. The implication is that this would require
LARGE amount of material made available to scientists so that we can
extract those minute quantities of amino acids and other organics and
presolar stardust grains for mass spectrometric analyses (these are the
two
primary potentials that the SM meteorites could offer. We need public to
come forward. Your support is deeply appreciated to realize its full
potential.
Respectively,
Qing-zhu Yin
________________________________________________
Qing-Zhu Yin, PhD
Chancellor's Fellow 2011-2016
Associate Professor
Department of Geology
Earth and Physical Sciences (EPS) Building
University of California, Davis
One Shields Avenue
Davis, CA 95616
Tel: 1-530-752-0934 (Office: EPS 3129)
1-530-220-4076 (Cell Phone)
1-530-752-0637 (Yin Lab-ICP^2-EPS 3230)
Fax: 1-530-752-0951 (Department)
E-mail: [email protected]
http://www.geology.ucdavis.edu/faculty/yin.html
________________________________________________
Please check out our new book published by Cambridge University Press on
April 12th, 2012
www.cambridge.org/9781107600768 (paperback edition)
www.cambridge.org/9780521760256 (hardback edition)
Hi Dr. Yin;
Posts should appear immediately. Check to make sure that your email
client is configured to send email as plain text (as opposed to Rich
Text, or HTML) as sometimes this will cause issues with emails being
delivered. Also, next time you post please cc: [email protected]
and I will see what happens to the post.
Best Regards, Art
On Sat, Jun 2, 2012 at 9:55 PM, Qingzhu Yin <[email protected]> wrote:
> Dear Metlist manager,
> I am writing to find out if the following message I sent to June 1 to
> [email protected] was posted or not. I have not seen
it in
> the met list since I sent the email, but sure how long does it take to
get
> the messages posted.
> Your help would be appreciated.
> Qingzhu
>
> On Jun 1, 2012, at 2:09 AM, Qingzhu Yin wrote:
>
> (Joint message released from Qing-zhu Yin, Pierre Rochette, Ken
Verosub)
>
> To the past or future finders of Sutter's Mill stones (and more
generally to
> all meteorite hunters): please do not stick magnets on your finds!
>
> This cause irremediable damage to their scientific value (erasing their
> magnetic memory). Moreover it is a useless habit to recognize
meteorites. A
> lot of rare types are hardly attracted by magnet (R, some CV, CM, most
> angrite, martian, lunar, HED.). The only interest we see for using a
magnet
> is when you search a known ordinary chondrite strewn field. or iron
> meteorite. A number of terrestrial rock (including the basalt gravels
that
> may look like Sutter's Mill) are well attracted by strong magnet.
>
> Unfortunately we are seeing some pieces have been wiped with a
magnet. For
> those of you who can be sure that their SM piece has not been seeing a
> magnet, please consider helping science by a loan of a small fragment.
It
> will be non-destructive analyses at UC Davis and it will be quick. It
takes
> a few minutes to an hour.
>
> We can quickly and easily look at the magnetization of any samples
smaller
> than 5-10 cc to determine which ones might not have been remagnetized
by
> collectors. Then we can try to do paleointensity studies on those
(meaning
> how strong the magnetic field was 4.5 billion years ago in the nascent
solar
> system). We can also characterize the magnetic properties of any
sample,
> including ones that have been remagnetized. Most of these measurements
can
> be done quickly and easily without any chemical or physical destruction
of
> the material. We could do a quick screening and decide which magnetic
> measurements made sense for each sample. They could then decide which
ones
> to leave with us for more analysis and which ones they wanted to take
back
> immediately.
>
> In addition, there are a number of non-destructive analyses which could
be
> done: including X-ray computed tomography (to see through what is
> inside
as
> done for human bodies). We (Denton Ebel and Qing-Zhu Yin) have already
done
> work on two specimens (SM3 and SM9) and submitted a conference report
> on
May
> 29th. A few more are currently planned. We will need to do more of
these
> analyses. CT scan images and movies shall be shared with the owner of
the
> samples. Those of you who want to see examples of those CT movies,
could
> come to my office and labs at UC Davis.
>
> We also urgently need to do more of gamma ray counting of more
specimens.
> This will help us to determine the pre-atmospheric entry meteoroid size
> before break up, among other information we could learn. These will
require
> samples to travel overseas in deep underground facilities (either in
North
> Japan or Italian Alps). The equivalent facilities in US was shut down
many
> years ago due to funding situation unfortunately. The test time is
typically
> 1 month. The specimens will be shipped back and forth with FedEx or any
> other insured carrier.
>
> If people are interested in having these test done (no harm is done to
the
> specimens) but help science in big way, please have them contact me.
> See
my
> contact information below.
>
> All the information we have so far indicate the organic content of SM
> meteorite is very very low. The implication is that this would require
LARGE
> amount of material made available to scientists so that we can extract
those
> minute quantities of amino acids and other organics and presolar
stardust
> grains for mass spectrometric analyses (these are the two primary
potentials
> that the SM meteorites could offer. We need public to come forward,
your
> support is deeply appreciated, to realize its full potential.
>
> Respectively,
>
> Qing-zhu Yin
>
>
> ________________________________________________
> Qing-Zhu Yin, PhD
> Chancellor's Fellow 2011-2016
> Associate Professor
> Department of Geology
> Earth and Physical Sciences (EPS) Building
> University of California, Davis
> One Shields Avenue
> Davis, CA 95616
>
> Tel: 1-530-752-0934 (Office: EPS 3129)
> 1-530-220-4076 (Cell Phone)
> 1-530-752-0637 (Yin Lab-ICP^2-EPS 3230)
> Fax: 1-530-752-0951 (Department)
> E-mail: [email protected]
> http://www.geology.ucdavis.edu/faculty/yin.html
> ________________________________________________
> Please check out our new book published by Cambridge University Press
on
> April 12th, 2012
> www.cambridge.org/9781107600768 (paperback edition)
> www.cambridge.org/9780521760256 (hardback edition)
>
>
>
Qing-zhu Yin, PhD
Associate Professor
Department of Geology
University of California, Davis
One Shields Avenue
Davis, CA 95616
Tel: 1-530-752-0934 (Office)
Fax: 1-530-752-0951 (Department)
E-mail: [email protected]
Note: Please update your address book to use <[email protected]>.
The <[email protected]> address will be decommissioned as
of July 1, 2009 due to California budget crisis
http:/www.geology.ucdavis.edu/faculty/yin.html
