AW: [meteorite-list] Is Brahin a ruster ?

[M come Meteorite Meteorites]

Contact this person, its where I send my pieces

"BGG (Blue Grama Gifts)/ Skymerchant Meteorics"
<bgg_skymerchant at hotmail.com> 

Matteo


 --- Lars Pedersen <lbp at privat.tdcadsl.dk> ha scritto:

> Yes maybe it should be put into some kind of acrylic
> resin.
> 
> Does anyone know what to use, and how to do it.
> 
> It is a 530 gram full slice  aprox. 21 x 17 
> centimeters.
> 
> Just a thin layer ?
> 
> Or a block like you sometine see seascales in a
> acrylic block ?
> 
> Best
> Lars
> ----- Original Message ----- 
> From: "M come Meteorite Meteorites"
> <mcomemeteorite2004 at yahoo.it>
> To: <meteorite-list at meteoritecentral.com>
> Sent: Tuesday, February 08, 2005 2:05 PM
> Subject: Re: AW: [meteorite-list] Is Brahin a ruster
> ?
> 
> 
> > For me the unique method for save the pallasites
> from
> > rusty is put this into a acrilic resin without
> air.
> >
> > Matteo
> >
> > --- Jörn Koblitz <koblitz at microfab.de> ha scritto:
> >> Hi List,
> >>
> >> back in the 1980s, I got a large, beautiful
> Admire
> >> slice. I kept it at low humidity and also added
> >> corrosion inhibitor to the bag in which the slice
> >> was wrapped in. During the first 10 years I
> checked
> >> for signs of rust from time to time. It was okay,
> no
> >> rust, very stable. So, I kept it alone (same
> storage
> >> conditions) until one year ago, when I look at it
> >> again. Well, the pallasite was in the state of
> >> disintegration, heavily rusted, olivines pressed
> out
> >> of the metal grid. What I want to say is, that
> even
> >> after so long time of stability, one can never be
> >> sure. I think, one has to check the state of such
> a
> >> known ruster more often. If any sign of rust,
> >> especially swallowing of olivine grains, one has
> to
> >> start corrective actions immediately (e.g.
> >> neutralization of acids, drying...). Rusting is a
> >> self-accelerating process, once it has started.
> If a
> >> meteorite is known as a ruster (like Brahin,
> >> Brenham, Admire), be very careful!
> >>
> >> I am presently developing a special method of
> >> treatment to remove all the salts (the source of
> the
> >> mess) from such corrosion sensitive irons and
> >> pallasite specimens. I hope, with such reatment,
> >> then these rusters are sufficiently stabilized
> for
> >> the time being.
> >>
> >> Jörn
> >>
> >>
> >> > -----Ursprüngliche Nachricht-----
> >> > Von: Martin Altmann
> >> [mailto:Altmann at Meteorite-Martin.de]
> >> > Gesendet: Montag, 7. Februar 2005 23:35
> >> > An: Lars Pedersen;
> >> meteorite-list at meteoritecentral.com
> >> > Betreff: Re: [meteorite-list] Is Brahin a
> ruster ?
> >> >
> >> >
> >> > Hi Lars,
> >> >
> >> > Brahin is untreated a hefty ruster like
> Brenham.
> >> > With two of the main suppliers of Brahin I made
> >> the experience
> >> > that Afanasjev (cometshop) did a good job in
> >> varnishing his slices.
> >> > My oldest slice from him I had for almost 7
> years
> >> without any problems
> >> > and many others I had in stock for 2years and
> more
> >> without
> >> > developping a
> >> > single trace of rust.
> >> > Once I was curios, grinded off the varnish and
> the
> >> slice
> >> > started to rust and
> >> > to swell within a few weeks.
> >> >
> >> > >From the other supplier Koutyrev (finmet) I
> know
> >> only, that
> >> > he advertized
> >> > his slices in former times to be stabilized
> with a
> >> "new
> >> > method" and with the
> >> > gimmick, that you can keep them even in salt
> water
> >> without any effect.
> >> > I never took from his Brahins, but heard from
> >> several of my collector
> >> > fellows as well as from some dealers too, that
> >> they were
> >> > indeed stable and
> >> > goody-goody.
> >> >
> >> > To be sure, one should choose a member of the
> >> > Eagle-Station-grouplet, with
> >> > their 15%+ Ni, they should be the most stable
> ones
> >> among all
> >> > pallasites, but
> >> > they are difficult to get and not even cheap...
> >> >
> >> > Cheers!
> >> > Martin
> >> >
> >> >
> >> >
> >> > ----- Original Message ----- 
> >> > From: "Lars Pedersen" <lbp at privat.tdcadsl.dk>
> >> > To: <meteorite-list at meteoritecentral.com>
> >> > Sent: Monday, February 07, 2005 8:52 PM
> >> > Subject: [meteorite-list] Is Brahin a ruster ?
> >> >
> >> >
> >> > > Hello All
> >> > > Thanks for you show reports and poictures, I
> >> enjoy them.
> >> > >
> >> > > I have just traded for a big fullslice of
> >> Brahin.
> >> > >
> >> > > Is it a ruster ?
> >> > > How do I prevent ?
> >> > >  etc. etc. ?
> >> > >
> >> > > Best
> >> > >  Lars
> >> > >
> >>
> --------------------------------------------------
> >> > >
> >> > > New meteorite forum:
> >> > >
> >> > > http://www.worldofmeteorites.com/
> >> > >
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> >>
> >
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> >> >
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> >>
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> >>
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> >>
> >
> > =====
> > M come Meteorite - Matteo Chinellato
> > Via Triestina 126/A - 30030 - TESSERA, VENEZIA,
> ITALY
> > Email: mcomemeteorite2004 at yahoo.it
> > Sale Site: http://www.mcomemeteorite.it
> > Collection Site: http://www.mcomemeteorite.info
> > International Meteorite Collectors Association
> #2140
> > MSN Messanger: spacerocks at hotmail.com
> >
>
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> 
=== message truncated === 

=====
M come Meteorite - Matteo Chinellato
Via Triestina 126/A - 30030 - TESSERA, VENEZIA, ITALY
Email: mcomemeteorite2004 at yahoo.it
Sale Site: http://www.mcomemeteorite.it 
Collection Site: http://www.mcomemeteorite.info
International Meteorite Collectors Association #2140
MSN Messanger: spacerocks at hotmail.com
EBAY.COM:http://members.ebay.com/aboutme/mcomemeteorite/


		
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