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

[al mitt]

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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