[meteorite-list] Laurencite disease?

From: Dave Freeman mjwy <dfreeman_at_meteoritecentral.com>
Date: Sat May 28 22:13:03 2005
Message-ID: <42992528.1060506_at_fascination.com>

Dear Bill,
I keep mine up here in WY's desert dry by keeping in a cheap sealed top
Walmart canister of see through plastic and keep the container 1/2 full
of rice. Rice is a drying agent and moderates any fluctuations in
humidity caused by cooking meals, taking showers, dishes...all will
raise the humidity in a home. Most of the year my humidity runs from
12-30 percent. Not too bad like some one from Florida or California near
the sea.
Hope this helps a little, I have never seen lawrencite here, or even a
weeping Nantan...go figure that one!
Dave F. mjwy

Tom Knudson wrote:

>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
>>>>
>>>>
>>>>______________________________________________
>>>>Meteorite-list mailing list
>>>>Meteorite-list_at_meteoritecentral.com
>>>>http://six.pairlist.net/mailman/listinfo/meteorite-list
>>>>
>>>>
>>>>
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>>>>
>>>>
>>>>
>>>>
>>>
>>>
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>>
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>
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Received on Sat 28 May 2005 10:12:56 PM PDT