Bill All,
A couple of notes have come in expressing trouble with the link, yours being
the second, so go to www.fallingrocks.com, hit Links Resources on the home
page, then hit Temporary Custodians under the Media header.
Interesting to see insight from you re: concern over negative things,
Great article, Dave! I'm so glad this was published and hope others will
take a minute to read it and think about it. One of my biggest fears in our
hobby is the loss of information. I hope more people will spend the time
researching and properly documenting the meteorites *they already own.* It
Hello everyone I have just finished adding several full slices of the
very interesting and beautiful Admire pallasite meteorites to my web
site. This particular meteorite shows a shimmer affect which I have
not photographed yet but both of the larger slices display this unique
affect. The crystals
Dave,
I enjoyed reading your article again, despite having read it in Met Mag
already.
I'm in the midst of updating the recent acquisitions and sales in my
humble collection. I'm living on borrowed time already, as we all are
really, so it is important to me that my wife is left with more than
Having a bit of a problem on some etch jobs and having to re-etch a few
specimens.
How do you rinse/neutralize your ferric after the etch? I'm getting
remnant staining and sometimes corrosion. I'm doing something wrong.
Any ideas?
-mt
__
Hello McCartney (and all):
Yes, the etch happens very quickly and you need to terminate it by a quick
wash under running water. Follow with a rinse in distilled water if you
want to but we never do and it works fine. You don;t have to neutralize it,
just wash it off VERY FAST. In fact, I
Hi McCartney, Ron, Listees,
This might actually be a good topic for an article on the new Meteorite
Wiki. Perhaps an experienced and generous person would be willing to
extend the time to write an extensive and detailed article on it
including information on preservation and stabilization.
Hi List,
Anyone have any experience using Radio Shack circuit board etching solution?
Count Deiro
-Original Message-
From: Meteorites USA e...@meteoritesusa.com
Sent: Oct 29, 2009 8:04 PM
To: R N Hartman rhartma...@earthlink.net
Cc: mccart...@blackbearddata.com, MeteoriteList
Ferric is a deeper more contrasty etch than nitric and gives a more pleasing
etch. It can be used as an alternative to a nitric etch. We use it all the
time and it is the only etchant we use. And its easier to obtain and handle
than nitric. See our article ETCHING IRON METEORITES (The Myth
Thank you Linton.
However those PowerPoint presentations are for IMCA members only.
You need a logon Id to download them.
Eventually there will be a lot more education and information material on
our website but it has to be written first, and two IMCA are working on that.
So it will be a while
Count,
Yes. It's ferric chloride and works fine.
Thomas
--- On Thu, 10/29/09, countde...@earthlink.net countde...@earthlink.net wrote:
From: countde...@earthlink.net countde...@earthlink.net
Subject: Re: [meteorite-list] Issue with etching via ferric choride
To: Meteorites USA
Hello List,
I have a very nice slice of Admire for sale, only $7.00 per gram
A picture of the slice is shown here
http://www.meteorman.org/Admire_105.5g.htm
Thanks,
Tim Heitz
MIDWEST METEORITES - http://www.meteorman.org
__
Hi Chris-
The C14 calibration data only goes back 24,000 years,
Try 50,000 years - INCAL98.
and there have been no confirmed significant impacts during that time,
Barringer?
and not even any well dated minor impacts. So how can spikes in the
calibration curve be linked to impacts?
http://www.rocksfromspace.org/October_30_2009.html
__
http://www.meteoritecentral.com
Meteorite-list mailing list
Meteorite-list@meteoritecentral.com
http://six.pairlist.net/mailman/listinfo/meteorite-list
INTCAL98 defines the C14 calibration back 26,000 years. There have been
subsequent calibrations using deposits in caves that push things back to
about 45,000 years, with somewhat less accuracy, and these aren't normally
used in standard C14 dating. What curve are you looking at that goes back
Hi Rob -
Yes, I have read through all that before, but the spike that gets to me is that
huge spike in the INTCAL98 data right around the time of the Barringer impact.
I don't think the neutron release is related to what hits, or what is hit, but
rather just the total impact energy. I wonder
I have tried to find any sources of the calibrating curve but I always
ends up on a publication server that tells me I have to pay to read the
article.
As you seems to have found it, could you tell me where to find it or
show us the curve and dataset?
The closest thing I found was this quote
Eric,
I would really be interested in reading it. Be sure to include some safety
guidelines. Today I just read about a guy who messed up his health bigtime
doing some welding work. Just one whiff of some minor looking fumes. I don't
have the article to pass along right now - it's at work.
E.P., Chris, Rob, List,
The problem is neutrons. Difficulty coming up
with a mechanism which could cause a large
spike in neutrons, said Rob.
Neutrons, free neutrons that is, are produced
two ways. First, the nucleus of an atom can decide
to kick out a neutron and change its image (and
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