[meteorite-list] Laurencite disease?

From: Tom Knudson <peregrineflier_at_meteoritecentral.com>
Date: Sat May 28 21:56:36 2005
Message-ID: <005301c563f1$a386b630$2d107918_at_Michelle>

Hi Bill, I live in Arizona too. I know this sounds weird, but I kept my
meteorites in a sealed container with an anti-rust thing, I think it was VCI
or something like that and still had rust problems. I gave up and just
through my whole collection on a shelf, out in the open air and have not
seen a bit of rust on anything! For a while I even had them above my fish
tank with out a problem.
   I think the simple approach works as good as any. It seems like they
need circulating air and some humidity. Keep in mind, we are in AZ, I
would not think this would work everywhere.
  I cut my meteorites, rinse them in tap water, soak them in alcohol for a
few minutes and set them out in the (AZ) sun or under the heat lamp of my
girls Monitor lizard then throw them on the shelve, not one problem at all,
go figure!
Thanks, Tom
peregrineflier <><

----- Original Message -----
From: "Bill Southern" <Nugget-Shooter_at_direcway.com>
To: <Meteorite-list_at_meteoritecentral.com>
Sent: Saturday, May 28, 2005 5:51 PM
Subject: Re: [meteorite-list] Laurencite disease?


> Hello Tom and List,
>
> They actually were treated that was after being cut and polished and I
guess
> it has been about 2 weeks now since treatment. Is there a way to prevent
> this without the use of oil on a chondrite?
>
> On the other hand it is a fascinating process to witness and seems to move
> along at a steady although slow pace in this one area while in other spots
> the process is stopped or moving much slower. I am in Arizona where we
have
> very little humidity right now and my specimens are in a sealed container,
> but this is a chemical process correct? Would eliminating oxygen help?
>
> Bill
> ----- Original Message -----
> From: "Tom Knudson" <peregrineflier_at_npgcable.com>
> To: "Bill Southern" <Nugget-Shooter_at_direcway.com>;
> <Meteorite-list_at_meteoritecentral.com>
> Sent: Saturday, May 28, 2005 5:41 PM
> Subject: Re: [meteorite-list] Laurencite disease?
>
>
> > Quick, get some alcohol, poor it into a glass container, wait, no time
for
> > that, drink it right from the bottle!!!! : ) Really, I personally
would
> > rinse them in distilled water then soak them in alcohol and then dry
them
> > under a heat lamp. I don't know if it will really help, but it is better
> > than nothing.
> > Thanks, Tom
> > peregrineflier <><
> >
> > ----- Original Message -----
> > From: "Bill Southern" <Nugget-Shooter_at_direcway.com>
> > To: <Meteorite-list_at_meteoritecentral.com>
> > Sent: Saturday, May 28, 2005 5:36 PM
> > Subject: [meteorite-list] Laurencite disease?
> >
> >
> >> Hello list,
> >>
> >> I was studying some slices of Franconia today under the microscope when
I
> >> noticed movement on the surface of one of the slices (stay with me I'm
> >> not
> > a
> >> nut) I switched to a bit higher magnification and along the edge of
some
> > of
> >> the metal in the specimen were small areas of rust with liquid in
minute
> >> amounts slowly bubbling up within it. I was actually able to watch what
I
> >> suspect to be Laurencite disease in slow progress.
> >>
> >> There are several areas on my specimens that are showing these rusting
> >> zones, but none actually are showing the liquid (acid?) moving on the
> >> surface. Anyway over the last several hours the affected area has grown
> >> by
> >> quite a bit. Interesting stuff...
> >>
> >> I have tried to take a photo, but the quality if lacking, sorry. Any
> >> added
> >> insight as to what I am witnessing would be very welcome.
> >>
> >> http://www.nuggetshooter.com/imagesMET/frandamage.jpg
> >>
> >> Best regards, Bill
> >>
> >>
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> >>
> >>
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> >
>
>
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Received on Sat 28 May 2005 09:56:32 PM PDT