[meteorite-list] Brahin stability

From: Zelimir Gabelica <Z.Gabelica_at_meteoritecentral.com>
Date: Thu Apr 22 10:30:01 2004
Message-ID: <1.5.4.32.20030930102158.008821d0_at_pop.univ-mulhouse.fr>

Hello Martin, Matteo, John, Tim, all,

I also got a Brahin slice from Afanasjev 3 years ago, mint and not
lacquered. It started getting rust spots after a couple of weeks and was
almost completely destroyed after 6 months.=20
I realize that Serge now found a way to protect Brahins but I did not dare
to take another such lacquered one from him last June in Ensisheim.=20
The only Brahin I acquired since this disappointing experience is a slice
embedded forever in epoxy. This is an exception as I never do that for
meteorites but after 3 unfruitful attempts to get a stable Barahin (from 3
various sources), I opted for the epoxy solution.
The message is probably that every meteorite candidate to rusting could
(should) first be treated in some way (like, e.g. the NaOH-propanol method
decribed by Steve Schoner) and then protected (e.g. Afanasjev's "kind of
glue").=20
Still much work and many "trials & errors" in perspective, as every case
seems to be diferent...

Cheers,

Zelimir


At 10:32 30/09/03 +0200, you wrote:
>Hi Matteo,
>
>I had several slices of Brahin from Afanasjev, which were lacquered with a
>kind of glue. Kept in an airtight box with dry agent they were totally
>stable for 2 years, another slice I had more than 6 years without any
>problems and as far as I know, they are still all o.k.
>
>Cheers!
>(Imilac is the best!)
>
>----- Original Message -----=20
>From: "M come Meteorite Meteorites" <mcomemeteorite2000_at_yahoo.it>
>To: <meteorite-list_at_meteoritecentral.com>
>Sent: Tuesday, September 30, 2003 7:27 AM
>Subject: Re: [meteorite-list] Pallasite available?
>
>
>> Here all Brahin pieces is go destroyed in 1 month or
>> few months, the unique piece stable is a slice buy 7
>> years ago from Casper. For no speack of Brenham,
>> Quijnque, Albin, Admire. No problems with Esquel and
>> Imilac. Sincerely if I should spend some money I would
>> spend them on a slice of Imilac or Esquel how I did,
>> my slice of Imilac from 94 gr. is perfect after 5
>> months, a slice of brahin after this time is go
>> destroy in 4 pieces.
>> Regards
>>
>> Matteo
>>
>> --- John Gwilliam <jkg_at_theriver.com> wrote:
>> > I agree with Tim (and several other list members) on
>> > this one. There are
>> > some Brahin specimens available that are very
>> > stable.
>> >
>> > Best,
>> > John Gwilliam
>> >
>> > At 05:48 PM 9/29/03 -0500, Tim Heitz wrote:
>> > >Matteo,
>> > >
>> > >NO ITS NOT all rusty !!!! Not all
>> > >
>> > >Regards,
>> > >Tim Heitz
>> > >
>> > >
>> > >----- Original Message -----
>> > >From: "M come Meteorite Meteorites"
>> > <mcomemeteorite2000_at_yahoo.it>
>> > >To: <bernd.pauli_at_paulinet.de>;
>> > <meteorite-list_at_meteoritecentral.com>
>> > >Sent: Sunday, September 28, 2003 11:23 PM
>> > >Subject: Re: [meteorite-list] Pallasite available?
>> > >
>> > >
>> > > > Yes, but brahin is a rusty bastard pallasite.
>> > > > Regards
>> > > >
>> > > > Matteo
>> > > >
>> > > > --- bernd.pauli_at_paulinet.de wrote:
>> > > > > > Hello, Would any one happen to have a small
>> > slice
>> > > > > of a Pallasite
>> > > > > > for sale or maybe trade? I do not have one
>> > in my
>> > > > > collection and
>> > > > > > figure it is time. I am looking for a small
>> > slice
>> > > > > that has plenty of
>> > > > > > both materials for my viewing pleasure. : )
>> > > > >
>> > > > > What about these:
>> > > > >
>> > > > >
>> > > >
>> >
>>
>>http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=3D3239&item=3D21936=
46780
>> > > > >
>> > > > >
>> > > >
>> >
>>
>>http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=3D3239&item=3D21934=
84669
>> > > > >
>> > > > >
>> > > >
>> >
>>
>>http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=3D3239&item=3D21934=
84729
>> > > > >
>> > > > > The "2193646780" Brahin would be my favorite
>> > though
>> > > > > the "2193484729"
>> > > > > Brahin is very nice too. The former looks more
>> > > > > stable visually.
>> > > > >
>> > > > > Several months ago I got a nice little
>> > QUIJINGUE
>> > > > > (3.5 grams) from AL Mitterling via
>> > > > > Ebay and it is still very stable. Keep your
>> > hands
>> > > > > off ADMIRE - it is a rust bucket lest
>> > > > > you take care of it regularly. Esquel and
>> > Imilac
>> > > > > slices are quite stable, my Brenham
>> > > > > has been stable for more than 15 years now -
>> > others
>> > > > > have had less luck because with
>> > > > > Brenham it depends on whether it is an
>> > internal or
>> > > > > an external piece (same thing with
>> > > > > the Cape York irons).
>> > > > >
>> > > > > Best wishes,
>> > > > >
>> > > > > Bernd
>> > > > >
>> > > > > To: knudson911_at_frontiernet.net
>> > > > > meteorite-list_at_meteoritecentral.com
>> > > > >
>> > > > >
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>> >
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>> > > >
>> > > > =3D=3D=3D=3D=3D
>> > > > M come Meteorite - Matteo Chinellato
>> > > > Via Triestina 126/A - 30030 - TESSERA, VENEZIA,
>> > ITALY
>> > > > Email: mcomemeteorite2000_at_yahoo.it
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>> >
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>> =3D=3D=3D=3D=3D
>> M come Meteorite - Matteo Chinellato
>> Via Triestina 126/A - 30030 - TESSERA, VENEZIA, ITALY
>> Email: mcomemeteorite2000_at_yahoo.it
>> Sale Site: http://www.mcomemeteorite.com Collection Site:
>http://www.mcomemeteorite.info
>> International Meteorite Collectors Association #2140
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******************************************************
Prof. Zelimir Gabelica
Groupe S=E9curit=E9 et Ecologie Chimiques (GSEC) - ENSCMu
3, rue A. Werner
F-68093 MULHOUSE Cedex, FRANCE
Tel: +33 (0)3 89 33 68 94
FAX: +33 (0)3 89 33 68 15
e-Mail: Z.Gabelica_at_uha.fr
******************************************************
Received on Tue 30 Sep 2003 06:21:58 AM PDT