[meteorite-list] Stopping Rust & Preserving Iron Meteorites - THIS WORKS!

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From: Jeff Kuyken <jeff_at_meteoritecentral.com>
Date: Thu Apr 22 10:08:27 2004
Message-ID: <005001c25fd1$ffb74680$4f348690_at_default>

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G'day again,

I agree with Steve. Saturation is what you want. I had undissolved =
chemical left also. It worked great for me. I guess getting some alcohol =
chemicals may be a little harder in Australia so I had to settle for =
plain old Methylated Spirits (95% Ethanol). It was all I could get and I =
was desperate to stop the rust before I watched the piece disintegrate =
before me. I also just used an everyday, household powdered form of =
Caustic Soda (98% NaOH). I have to admit that the Olivine crystals in my =
little Brahin slice that I tried it with didn't like the mix too much as =
they didn't come out of it looking the same. No great problem as the =
piece was well and truly on it's way to back to the great Pallasite =
heaven in the sky! ;-)

Thanks again,

Jeff Kuyken
I.M.C.A. #3085
www.meteoritesaustralia.com

----- Original Message -----=20
From: "Steven Schoner" <american_meteorite_survey_at_yahoo.com>
To: <marsroxx_at_theofficenet.com>
Cc: <meteorite-list_at_meteoritecentral.com>
Sent: Thursday, September 19, 2002 6:53 AM
Subject: Re: [meteorite-list] Stopping Rust & Preserving Iron Meteorites =
- THIS WORKS!

>=20
> --- marsroxx_at_theofficenet.com wrote:
> >=20
> > Dear Jeff and Steve,
> > What proportions of Alcohol and Hydroxide do you
> > use?
> > Thanks
> > Alan Gayda
> >=20
> >
>=20
>=20
> Use 70% isopropyl and then add about one level
> teaspoon of red devil lye to every 6 oz of that.
>=20
> You want saturation, so not all of it will dissolve.
>=20
> Steve Schoner.=20
>=20
>=20
> >=20
> > Quoting Steven Schoner
> > <american_meteorite_survey_at_yahoo.com>:
> >=20
> > > And I might also add that the process that I
> > devised
> > > also works well with Brahin. But with pallasites
> > one
> > > has to be careful as some of the olivines have a
> > > tendency to rise out of their sockets as the FeCl3
> > is
> > > converted to FeOH. Then during drying the FeOH is
> > > converted to iron oxides. And the olivines are at
> > > this point fairly secure. But what I do is use
> > > superglue to fix all the olivines then sand it
> > down.=20
> > > I then leave the pallasite slices uncoated after
> > > polishing for several weeks. If they don't rust
> > then
> > > I heat them to 150 degrees then dip them in
> > > polyurethane and allow them to dry.
> > >=20
> > > They never rust again.
> > >=20
> > > The process also works very well with the
> > problematic
> > > Lamont mesosiderite as well. =20
> > >=20
> > >=20
> > > Steve Schoner
> > > American Meteorite Survey.
> > >=20
> > > =20
> > > --- Jeff Kuyken <jeff_at_meteoritesaustralia.com>
> > wrote:
> > > > G'day List,=20
> > > > A couple of months ago I wrote to the list
> > asking
> > > > for help to stop my Chinga slice rusting. There
> > have
> > > > been a few posts since then asking similar
> > questions
> > > > so I thought I would share this with everyone.
> > > > Before I continue, I really need to mention that
> > the
> > > > problematic 111g slice of Chinga arrived to me
> > > > rusting in a way that would have put any Nantan
> > to
> > > > shame! John Gwilliam replied to my post with a
> > great
> > > > process that I have tried and has worked
> > extremely
> > > > well. Thanks John. It has been several weeks now
> > and
> > > > not even the slightest hint of rust has
> > reoccurred.
> > > > I have included the post below.
> > > >=20
> > > > Thanks,
> > > >=20
> > > > Jeff Kuyken
> > > > I.M.C.A. #3085
> > > > www.meteoritesaustralia.com
> > > >=20
> > > > "Hello Jeff and List,
> > > >=20
> > > > According to Ivan Koutyrev, all the Chinga irons
> > > > they have found have been=20
> > > > recovered in stream beds. This means that the
> > irons
> > > > have been in almost=20
> > > > constant contact with water for a long time.=20
> > Over
> > > > hundreds of years, rust=20
> > > > has been able to migrate into the interior where
> > it
> > > > can be a chronic=20
> > > > problem if not treated properly.
> > > >=20
> > > > After the meteorite has been sliced, I sand down
> > the
> > > > flat surfaces starting=20
> > > > with a 100 grit or even a fresh 220 grit sanding
> > > > belt (on a water cooled=20
> > > > lapidary sander). Successively finer grits are
> > used
> > > > until I'm down to a=20
> > > > worn 600 grit belt. Remember to wash the iron
> > slice
> > > > and rinse in anhydrous=20
> > > > alcohol in between every grit change so you
> > don't
> > > > have a stray piece of=20
> > > > larger grit mess up your polished surface.=20
> > After
> > > > the worn 600 grit=20
> > > > polish, I treat the specimen for 5 - 10 days in
> > the
> > > > alcohol/ sodium=20
> > > > hydroxide bath recommended by Steve Schoner.=20
> > This
> > > > will attack the rust in=20
> > > > the specimen and the sodium in the mix bonds
> > with
> > > > the chlorides in the rust=20
> > > > and becomes common salt. Believe me, this
> > solution
> > > > really works. I have=20
> > > > several slices of OLD Campos sitting unprotected
> > out
> > > > in my shop that were=20
> > > > treated over 18 months ago and none of them show
> > a
> > > > hint of rust. For those=20
> > > > of you interested in this process, I think you
> > can
> > > > find it on Eric=20
> > > > Twelker's website.
> > > >=20
> > > > After soaking in the bath, I rinse the specimen
> > > > thoroughly in FRESH=20
> > > > anhydrous alcohol and wipe it dry.
> > > >=20
> > > > Next, I polish the slice with a muslin buff on
> > a
> > > > jewelers spindle. My=20
> > > > polishing unit has dual 6" x 1" stitched cloth
> > > > buffing wheels that you can=20
> > > > mount on any motor with an arbor or spindle. My
> > > > machine turns at 3,250=20
> > > > RPMs but a slower motor in the 1,720 RPM range
> > will
> > > > work as well. The key=20
> > > > to the final polish is the compound applied to
> > the
> > > > moving buff. I use a=20
> > > > product manufactured for the jewelry industry
> > > > called ZAM. I believe it=20
> > > > contains chromium oxide as the polishing agent.=20
> > It
> > > > is a light green hard=20
> > > > stick in a cardboard wrapper and is available
> > from
> > > > jewelry supply outfits=20
> > > > and some lapidary shops. Several minutes of
> > > > polishing will produce that=20
> > > > mirror like polish you are looking for."
> > > >=20
> > > >=20
> > >=20
> > >=20
> > > __________________________________________________
> > > Do you Yahoo!?
> > > Yahoo! News - Today's headlines
> > > http://news.yahoo.com
> > >=20
> > > ______________________________________________
> > > Meteorite-list mailing list
> > > Meteorite-list_at_meteoritecentral.com
> > >
> >
> http://www.pairlist.net/mailman/listinfo/meteorite-list
> > >=20
> > >=20
> >=20
> >=20
>=20
>=20
> __________________________________________________
> Do you Yahoo!?
> Yahoo! News - Today's headlines
> http://news.yahoo.com
>=20
> ______________________________________________
> Meteorite-list mailing list
> Meteorite-list_at_meteoritecentral.com
> http://www.pairlist.net/mailman/listinfo/meteorite-list

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=3DContent-Type content=3D"text/html; =
charset=3Diso-8859-1">
<META content=3D"MSHTML 5.50.4522.1800" name=3DGENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY>
<DIV>G'day again,</DIV>
<DIV> </DIV>
<DIV>I agree with Steve. Saturation is what you =
want. I had=20
undissolved chemical left also. It worked great for me. I guess getting =
some=20
alcohol chemicals may be a little harder in Australia so I had to =
settle=20
for plain old Methylated Spirits (95% Ethanol). It was all I could get =
and I was=20
desperate to stop the rust before I watched the piece=20
disintegrate before me. I also just used an =
everyday, household=20
powdered form of Caustic Soda (98% NaOH). I have to admit that the =
Olivine=20
crystals in my little Brahin slice that I tried it with didn't like the =
mix too=20
much as they didn't come out of it looking the same. No great =
problem as=20
the piece was well and truly on it's way to back to the great Pallasite =
heaven=20
in the sky! ;-)</DIV>
<DIV> </DIV>
<DIV>Thanks again,</DIV>
<DIV> </DIV>
<DIV>Jeff Kuyken I.M.C.A. #3085 <A=20
href=3D"http://www.meteoritesaustralia.com">www.meteoritesaustralia.com</=
A></DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV>----- Original Message ----- </DIV>
<DIV>
<DIV>From: "Steven Schoner" <<A=20
href=3D"mailto:american_meteorite_survey_at_yahoo.com"><FONT=20
face=3DVerdana>american_meteorite_survey_at_yahoo.com</A><FONT=20
face=3DVerdana>></DIV>
<DIV>To: <<A=20
href=3D"mailto:marsroxx_at_theofficenet.com"><FONT=20
face=3DVerdana>marsroxx_at_theofficenet.com</A><FONT=20
face=3DVerdana>></DIV>
<DIV>Cc: <<A=20
href=3D"mailto:meteorite-list_at_meteoritecentral.com"><FONT=20
face=3DVerdana>meteorite-list_at_meteoritecentral.com</A><FONT=20
face=3DVerdana>></DIV>
<DIV>Sent: Thursday, September 19, 2002 6:53 =
AM</DIV>
<DIV>Subject: Re: [meteorite-list] Stopping Rust =
&=20
Preserving Iron Meteorites - THIS WORKS!</DIV></DIV>
<DIV> </DIV>> =
 > ---=20
<A href=3D"mailto:marsroxx_at_theofficenet.com"><FONT=20
face=3DVerdana>marsroxx_at_theofficenet.com</A> =

wrote: > > > > Dear Jeff and Steve, > > What =

proportions of Alcohol and Hydroxide do you > > use? > =
>=20
Thanks > > Alan Gayda > > > > > =
 >=20
 > Use 70% isopropyl and then add about one level > teaspoon =
of red=20
devil lye to every 6 oz of that. > > You want saturation, =
so not=20
all of it will dissolve. > > Steve Schoner. > =
 >=20
 > > > > Quoting Steven Schoner > > =
<<A=20
href=3D"mailto:american_meteorite_survey_at_yahoo.com"><FONT=20
face=3DVerdana>american_meteorite_survey_at_yahoo.com</A><FONT=20
face=3DVerdana>>: > > > > > And I might also =
add that the=20
process that I > > devised > > > also works well =
with=20
Brahin.  But with pallasites > > one > > > has =
to be=20
careful as some of the olivines have a > > > tendency to =
rise out of=20
their sockets as the FeCl3 > > is > > > converted =
to=20
FeOH.  Then during drying the FeOH is > > > converted =
to iron=20
oxides.  And the olivines are at > > > this point =
fairly=20
secure.  But what I do is use > > > superglue to fix =
all the=20
olivines then sand it > > down. > > > I then leave =
the=20
pallasite slices uncoated after > > > polishing for several=20
weeks.  If they don't rust > > then > > > I =
heat them=20
to 150 degrees then dip them in > > > polyurethane and allow =
them to=20
dry. > > > > > > They never rust again. > =
>=20
> > > > The process also works very well with =
the > >=20
problematic > > > Lamont mesosiderite as well.  =
 > >=20
> > > > > > > Steve Schoner > > =
>=20
American Meteorite Survey. > > > > > >  =
 >=20
> > --- Jeff Kuyken <<A=20
href=3D"mailto:jeff_at_meteoritesaustralia.com"><FONT=20
face=3DVerdana>jeff_at_meteoritesaustralia.com</A><FONT=20
face=3DVerdana>> > > wrote: > > > > G'day =
List,=20
 > > > > A couple of months ago I wrote to the =
list > >=20
asking > > > > for help to stop my Chinga slice rusting.=20
There > > have > > > > been a few posts since =
then=20
asking similar > > questions > > > > so I =
thought I=20
would share this with everyone. > > > > Before I =
continue, I=20
really need to mention that > > the > > > > =
problematic=20
111g slice of Chinga arrived to me > > > > rusting in a =
way that=20
would have put any Nantan > > to > > > > shame! =
John=20
Gwilliam replied to my post with a > > great > > > =
>=20
process that I have tried and has worked > > extremely > =
>=20
> > well. Thanks John. It has been several weeks now > >=20
and > > > > not even the slightest hint of rust =
has > >=20
reoccurred. > > > > I have included the post =
below. > >=20
> > > > > > Thanks, > > > > =
 > >=20
> > Jeff Kuyken > > > > I.M.C.A. #3085 > > =
>=20
> <A href=3D"http://www.meteoritesaustralia.com"><FONT=20
face=3DVerdana>www.meteoritesaustralia.com</A> >=20
> > > > > > > "Hello Jeff and List, > =
> >=20
> > > > > According to Ivan Koutyrev, all the Chinga=20
irons > > > > they have found have been > > =
> >=20
recovered in stream beds.  This means that the > > =
irons >=20
> > > have been in almost > > > > constant =
contact with=20
water for a long time. > > Over > > > > =
hundreds of=20
years, rust > > > > has been able to migrate into the =
interior=20
where > > it > > > > can be a chronic > =
> >=20
> problem if not treated properly. > > > > > =
> >=20
> After the meteorite has been sliced, I sand down > > =
the >=20
> > > flat surfaces starting > > > > with a 100 =
grit or=20
even a fresh 220 grit sanding > > > > belt (on a water =
cooled=20
 > > > > lapidary sander).  Successively finer grits =

are > > used > > > > until I'm down to a =
 > >=20
> > worn 600 grit belt.  Remember to wash the iron > =
>=20
slice > > > > and rinse in anhydrous > > > =
>=20
alcohol in between every grit change so you > > don't > =
> >=20
> have a stray piece of > > > > larger grit mess up =
your=20
polished surface. > > After > > > > the worn =
600 grit=20
 > > > > polish,  I treat the specimen for 5 - 10 =
days=20
in > > the > > > > alcohol/ sodium > > =
>=20
> hydroxide bath recommended by Steve Schoner. > > =
This >=20
> > > will attack the rust in > > > > the =
specimen and=20
the sodium in the mix bonds > > with > > > > the =

chlorides in the rust > > > > and becomes common =
salt. =20
Believe me, this > > solution > > > > really=20
works.  I have > > > > several slices of OLD Campos =
sitting=20
unprotected > > out > > > > in my shop that were =

 > > > > treated over 18 months ago and none of them =
show >=20
> a > > > > hint of rust.  For those > =
> >=20
> of you interested in this process,  I think you > >=20
can > > > > find it on Eric > > > > =
Twelker's=20
website. > > > > > > > > After soaking in =
the=20
bath, I rinse the specimen > > > > thoroughly in FRESH =
 >=20
> > > anhydrous alcohol and wipe it dry. > > > > =

 > > > > Next,  I polish the slice with a muslin =
buff=20
on > > a > > > > jewelers spindle.  My =
 >=20
> > > polishing unit has dual  6" x 1" stitched =
cloth > >=20
> > buffing wheels that you can > > > > mount on =
any motor=20
with an arbor or spindle.  My > > > > machine turns =
at 3,250=20
 > > > > RPMs but a slower motor in the 1,720 RPM =
range >=20
> will > > > > work as well.  The key > =
> >=20
> to the final polish is the compound applied to > > =
the >=20
> > > moving buff.  I use a > > > > =
product=20
manufactured for the jewelry  industry > > > > =
called=20
ZAM.  I believe it > > > > contains chromium oxide =
as the=20
polishing agent. > > It > > > > is a light =
green hard=20
 > > > > stick in a cardboard wrapper and is =
available >=20
> from > > > > jewelry supply outfits > > =
> >=20
and some lapidary shops.  Several minutes of > > > > =

polishing will produce that > > > > mirror like polish =
you are=20
looking for." > > > > > > > > > =
> >=20
 > > > > > >=20
__________________________________________________ > > > Do =
you=20
Yahoo!? > > > Yahoo! News - Today's headlines > > =
>=20
<A href=3D"http://news.yahoo.com"><FONT=20
face=3DVerdana>http://news.yahoo.com</A> > >=20
> > > > =
______________________________________________ >=20
> > Meteorite-list mailing list > > > <A=20
href=3D"mailto:Meteorite-list_at_meteoritecentral.com"><FONT=20
face=3DVerdana>Meteorite-list_at_meteoritecentral.com</A> <FONT=20
face=3DVerdana>> > > > > > <A=20
href=3D"http://www.pairlist.net/mailman/listinfo/meteorite-list"><FONT=20
face=3DVerdana>http://www.pairlist.net/mailman/listinfo/meteorite-list</F=
ONT></A> <FONT=20
face=3DVerdana>> > > > > > > > > =
>=20
 > > >=20
__________________________________________________ > Do you=20
Yahoo!? > Yahoo! News - Today's headlines > <A=20
href=3D"http://news.yahoo.com"><FONT=20
face=3DVerdana>http://news.yahoo.com</A> >=20
 > ______________________________________________ > =
Meteorite-list=20
mailing list > <A=20
href=3D"mailto:Meteorite-list_at_meteoritecentral.com"><FONT=20
face=3DVerdana>Meteorite-list_at_meteoritecentral.com</A> <FONT=20
face=3DVerdana>> <A=20
href=3D"http://www.pairlist.net/mailman/listinfo/meteorite-list"><FONT=20
face=3DVerdana>http://www.pairlist.net/mailman/listinfo/meteorite-list</F=
ONT></A></BODY></HTML>

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Received on Thu 19 Sep 2002 07:44:55 AM PDT

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