[meteorite-list] I have a problem with some rusting meteorites

From: Bob King <nightsky55_at_meteoritecentral.com>
Date: Tue, 26 Oct 2010 15:00:24 -0500
Message-ID: <AANLkTinP_Ad=ViuxuLsUxhXQH06C4rotedM_bKOcQ=n4_at_mail.gmail.com>

Here's another method involving soaking the meteorite in a solution of
sodium hydroxide, easily made from Drano. It comes via Steve Schoner.
Go to: http://earthsci.org/fossils/space/craters/met/met.html and
scroll down to "Repairing Meteorites". I've tried this on a number of
Dronino rusters and had good success with a few of the pieces (but not
one particularly stubborn one). I also regularly coat my irons with a
spray from Gander Mt. outdoor stores used to protect gun metal. It's
excellent and really has worked on my Campos. Unfortunately I can't
remember the name of it off hand - something like Resolve or Shield.
Bob

On Tue, Oct 26, 2010 at 8:13 AM, al mitt <almitt at kconline.com> wrote:
> Hi Jessica,
>
> Muonionalusta tends to rust around the natural outside edges where it was
> exposed to the weather before it was sliced. In my experience it won't rust
> in the interior of the slice even if you don't treat the outside edges. If
> you do treat the outside edges where it rusts, you need to keep it very dry
> and with desiccant. Be sure your desiccant isn't part of the problem as it
> will absorb moisture and then contaminate the specimen when it is saturated.
> Also avoid touching specimens to blue colored desiccant that change when
> spent.
>
> One thing that I have not seen mentioned here, keep meteorites at a uniform
> temperature. Variations in the room or sunlight hitting specimens or cases
> will cause a minor amount of condensation and ultimately rust.
>
> --AL Mitterling
> Mitterling Meteorites and Lab
>
>
> ----- Original Message ----- From: "power ofunity"
> <energylightandlove at yahoo.com>
> To: "Tim Heitz" <midwestmeteor at earthlink.net>;
> <Meteorite-list at meteoritecentral.com>
> Sent: Monday, October 25, 2010 8:11 PM
> Subject: Re: [meteorite-list] I have a problem with some rusting meteorites
>
>
> I have heard Admire is notorious for this...but I am no expert.
>
> I second Tim's request for information. I also have a nice slice of
> Muonionalusta, that I purchased from a list member, that is showing signs of
> rust around the edges. This piece is not displayed, and is kept in
> "air-tight"
> plastic container with dessicant, yet still is showing the tell-tale signs.
> Any
> suggestions for removing and/or preventing rust without damaging or altering
> the
> specimen would be greatly appreciated by many on the list.
>
> Thanks,
>
> Jessica
>
> ----- Original Message ----
> From: Tim Heitz <midwestmeteor at earthlink.net>
> To: Meteorite-list at meteoritecentral.com
> Sent: Mon, October 25, 2010 5:04:47 PM
> Subject: [meteorite-list] I have a problem with some rusting meteorites
>
> Hello List Members,
>
> I was hoping someone could help me with this one.
> I have 2 pallasites that are starting to show signs of rusting, an Admire
> and
> Fukang.
>
> Can someone please tell me what I can do to stop the rusting. Is there a way
> to
> clean
> them up and seal it against any further rusting. I willing to try anything
> new
> that might work.
> Any ideas?
>
> I live in St.Louis, its very humid here, I know this might be hard to stop.
>
>
> Tim Heitz
>
> MIDWEST METEORITES http://www.meteorman.org
>
> 314-596-1435
> Member IMCA-4781
> International Meteorite Collectors Association
>
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Received on Tue 26 Oct 2010 04:00:24 PM PDT