[meteorite-list] RE: Nice Dronino?

From: Jonathan Gore <jonathan301_at_meteoritecentral.com>
Date: Thu Nov 25 23:24:00 2004
Message-ID: <41A6AFD8.5020205_at_earthlink.net>

I thought it wasn't a good idea to store meteorites in plastic bags. I
would think storing it in a bell jar with the air evacuated would
stabilize it.

Just a thought....

Jonathan

Pekka Savolainen wrote:
>
> Nope, as far as I know. This mirror-polished fellow was
> stored in the air-tight plastig-bag, and some 10 months it
> was a real beauty. Then it started to rust very fast, or in
> fact not only to rust, perhaps "boiling" is a good word for
> the process...;-
>
> The beauty today;
>
> http://www.dlc.fi/~nuuska/dronino.jpg
>
> best,
>
> pekka s
>
> Jonathan Gore wrote:
>
>> Would storing it in a vacuum work?
>>
>> Pekka Savolainen wrote:
>>
>>>
>>> Well, have tried everything except black magic and woodoo...;-
>>> Dronino is a quite old one, accordindg Verdansky from before
>>> 12:th century. Main part of the pieces was found from the very
>>> wet area, so I suppose, the chlorides are not the only problem...,
>>> the meteorite is just too old and have spent too much time in a
>>> wet soil.
>>>
>>> http://www.geokhi.ru/~meteorit/dronino1-e.html
>>>
>>> As I told in my former e-mail, after all tricks my pieces stayed
>>> stable some 8 - 10 months, the pieces without any methods to
>>> stabilizie them couple of weeks, not much longer.
>>>
>>> If some happens to find to way to stabilizate this very interresting
>>> meteorite indeed, please, let me know...
>>>
>>> best,
>>>
>>> pekka s
>>>
>>>
>>>
>>> Stephen McMann wrote:
>>>
>>>> Dear Pekka and List,
>>>>
>>>> Has anyone ever tried some of the tried and true iron stabilization
>>>> techniques on Dronino, such as a long bath in an alcohol and NaOH rich
>>>> solution to remove chlorides? On a related subject, I guess that I
>>>> may not
>>>> really understand the chemistry behind why some meteorites are
>>>> stable, and
>>>> some are not. Perhaps I will naively ask, "Is it all about chlorides?"
>>>>
>>>> Sincerely,
>>>>
>>>> Stephen McMann
>>>>
>>>> -----Original Message-----
>>>> From: Pekka Savolainen [mailto:pekka.savolainen_at_dlc.fi] Sent:
>>>> Thursday, November 25, 2004 5:33 PM
>>>> To: Stephen McMann
>>>> Cc: meteorite-list_at_meteoritecentral.com
>>>> Subject: Re: [meteorite-list] Nice Dronino?
>>>>
>>>>
>>>> They are not stable. The older pieces was slag in a few weeks or
>>>> months,
>>>> the new "stable" ones in 8 - 10 months. I have just one very thin
>>>> piece not
>>>> distroyed, just because it has a quite heavy lacquer. Fastest ruster
>>>> I have
>>>> ever seen ;-
>>>>
>>>> best,
>>>>
>>>> pekka
>>>>
>>>>
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>>>>
>>>>
>>>>
>>>
>>
>>
>
Received on Thu 25 Nov 2004 11:23:52 PM PST