Hi list, rustophobes -
with pleasure I post here the link to our colleague Ben's Website (who isn't
list member, but reader)
http://www.aranemac.de/mets/rost.html
In cooperation with collector-friends of the
Meteorite-Mineralien-Gold-Forum.de Ben worked out a system of 5 gratuated
rust levels in regard to iron meteorites.
As the website is in German please allow me to translate the 5 (colored)
levels:
Rust Level - 1 Staying stabile for a very long time without adding
desiccants or other assistive equipment
RL - 2 Pretty indulgent, ruster are a decesive exception
RL - 3 In the most cases without problems over a few years, but one can get
a ruster as well occasionelly
RL - 4 Problematic irons, difficult to keep stabile, rusters are in majority
RL - 5 Extreme rusters, the process usually ends with complete decay;
stabile pieces are extremely rare
The rest should be self-explanatory.
Best, Matthias
----- Original Message -----
From: <almi...@localnet.com>
To: <meteorite-list@meteoritecentral.com>
Sent: Tuesday, December 07, 2010 11:39 AM
Subject: Re: [meteorite-list] List of known Rusters?
Greetings,
Here is a thread that WD40 was talked about in the past. You can use this
date to go back and view all the comments. Apparently there was a prior
thread on the same subject even further back.
--AL Mitterling
Re: [meteorite-list] WD-40
Eric Twelker
Thu, 02 Jun 2005 21:49:26 -0700
Hello List
Possibly one of the sources of the idea that WD-40 contains water is my
preservation page. The reason I wrote this was personal experience. When
I
was starting out in the business, I bought a gallon can of WD-40 at the
hardware store. I poured it into a glass container to treat some
meteorites. In the bottom, sitting in an immiscible layer was something
that sure looked like water to me. I didn't analyzed the layer, but when
I
heard that WD-40 contained water, I was convinced.
Regards,
Eric Twelker
http://www.meteoritemarket.com
Hi Mark,
Did they sum it up in 6 words?? I would like to know why it doesn't
contain water. If they have tanks that sit empty for any length of time
there is bound to be some moisture from that alone. While it may be true
it contains very little moisture (so the customer relations can state it
doesn't have water as they want you to use their product) it still may
contain enough to do damage to something susceptible to oxidation (like
meteorites).
To say it has no moisture in it at all, well I have a hard time
believing that from them. Sometimes you have to really define terms and
break apart information to get to the truth of the matter. A few well
chosen words on their part really bother me.
--AL
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Quoting Meteorites USA <e...@meteoritesusa.com>:
The formula for WD40 is secret. however...
"...WD-40 literally stands for Water Displacement, 40th attempt..."
http://www.wd40.com/faqs/
WD40 does not contain water... ;)Wouldn't it seem counter intuitive to
add water to a product which displaces water?
Wired Science article about the ingredients of WD40:
http://www.wired.com/science/discoveries/magazine/17-05/st_whatsinside
"...What does WD-40 contain? - While the ingredients in WD-40 are secret,
we can tell you what WD-40 does NOT contain. WD-40 does not contain
silicone, kerosene, *water*, wax, graphite, chlorofluorocarbons (CFCs),
or any known cancer-causing agents..." http://www.wd40.com/faqs/
Nantan has a bad rep for rusting, however, usually only the outer surface
of the irons are rusted. Smaller irons rust deeper into the interior of
the metal in relation to it's size. The level of oxidation depends on the
size of the specimen and partly on "where" within any given specimen the
slice is cut from. The treatment and prep work on a finished piece of
etched Nantan also plays a large part in whether it rusts or not.
Regards,
Eric
On 12/6/2010 10:11 AM, Gary Fujihara wrote:
I wouldn't use WD40 on any mets, as it contains water and smells. Like
Al mentioned, a good low viscosity gun oil like Remington Rem-Oil wipes
work well without any aroma. As an added bonus the application wipes
clean mets while lubricating them.
Also, as Matt mentioned, there are problem and stable specimens from
most any iron or pallasite meteorite. Another factor is how they were
prepared. And its not just irons and pallasites, as I've had Ghubaras
and Tsarevs that self destruct by themselves.
gary
On Dec 6, 2010, at 8:00 AM, al mitt wrote:
Hi Ed and all,
This has been discussed before and I believe the consensus was that
WD40 can have moisture in it that will promote rust. It depends on the
batch but there is varying degrees of water contained in this
lubricant. It might not be so good for Nantans but more stable irons
like Gibeon would probably be fine.
A good grade gun oil like Birchwood brand, Barricade seems to do better
in my experience but smells a bit. Bottom line here, Nantans are often
unstable and may have been weathered to the point you'll never be very
successful at drying them out. These are notorious rusters.
I like very much your idea of a list of meteorites that are problems
specimens. Perhaps we could develop a rating system (1 to 10), (stable,
mostly stable, partly stable, unstable, extremely unstable) or
something similar and a listing of specimens. Even the metal in
ordinary chondrites can rust. An example is Ghubara, Omen. About half
of the pallasites out there are problem specimens, and a number of
irons are.
Best!
--AL Mitterling
----- Original Message ----- From: "Ed Majden"<epmaj...@shaw.ca>
To:<meteorite-list@meteoritecentral.com>
Sent: Monday, December 06, 2010 12:28 PM
Subject: [meteorite-list] List of known Rusters?
Does anyone have a list of known Iron meteorite rusters? The sample
of Nantan China I have split into several pieces. I have been using
WD40 on the pieces to retard further problems but this does not work
all that well. Have to repeat this every few weeks!
Ed Majden
Courtenay B.C.
Asteroid Majden 142368 (Thanks to Rob Matson)
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Gary Fujihara
Big Kahuna Meteorites (IMCA#1693)
105 Puhili Place, Hilo, Hawai'i 96720
http://bigkahuna-meteorites.com/
http://shop.ebay.com/fujmon/m.html
(808) 640-9161
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