smithsonia , georgia is THE most unstable around- you can hear it crackling as it rusts! it rusts, delaminates, bends itself, etc., even in pure alcohol.
i will be gradually switching over to yahoo mail (it has 100 FREE megs of storage). please cc to: [EMAIL PROTECTED]
From: "R. N. Hartman" <[EMAIL PROTECTED]>
Reply-To: "R. N. Hartman" <[EMAIL PROTECTED]>
To: "mark ford" <[EMAIL PROTECTED]>, <[email protected]>
Subject: Re: [meteorite-list] RE: POLL: rustiest most unstable known
Date: Tue, 30 May 2006 18:29:15 -0700
>Our experience:
>
>You will not remove all the moisture that gets deep into fissures and at the
>boundaries of the inclusions in an iron meteorite simply by any method if
>the meteorite is treated at room temperatures. We heat the iron meteorite
>in an oven to a high temperature in a protecting oil which expands the
>cracks and allows a protecting oil to replace the moisture. The protecting
>oil prevents discoloration and damage to the iron which would occur if
>heated otherwise. It works perfectly. None of my iron meteorites rust.
>The protecting oil is then swabbed over the surface and allowed to evaporate
>for a few days, then the remainder is removed and the surface allowed to
>fully dry, protecting the meteorite from absorbing additional external
>moisture. Such an oil is ordinary ATF as used in modern automobile
>transmissions. (And it is cheap!) The method was developed by my son, Jim,
>and has been partially described in one of my previous articles in METEORITE
>TIMES (November 2002) in which we described proper preparation of the
>surface of an iron. The details using the AFT was not discussed there as it
>is a bit tricky and I am not suggesting that anyone try this as I don't want
>anyone to burn down their kitchens or blow their heads off, but with careful
>experimentation someone experienced in lab techniques can achieve much
>success. Heating carefully as described in the article should give good
>results.
>
>Other techniques have been described by various preparers and some of them
>seem to be successful as well. But each iron is unique and no method works
>exactly the same for any two.
>
>Ron Hartman
>
>----- Original Message -----
>From: "mark ford" <[EMAIL PROTECTED]>
>To: <[email protected]>
>Sent: Monday, October 10, 2005 9:07 AM
>Subject: RE: [meteorite-list] RE: POLL: rustiest most unstable known
>
>
>
>
>The way I see it is there are two issues with rusting:
>
>
>1) water/chlorine oxygen that is in the meteorite when you buy it, Often
>due to etching in water based etchants or rain damage when it was in the
>ground - This causes rusting even if you coat it in varnish since it is
>just using up contaminants inside the matrix. To over come this type of
>rusting you need to dry the metal very well and maybe even use sodium
>hydroxide solution to neutralize any acid.
>
>2) External sources of water vapor, chlorine and such: This can be
>prevented by using appropriate VCI and dessicant or dehumidification and
>keeping the specimens in a closed cabinet away from draughts and sources
>of water or contaminats. And this means not using bear fingers when you
>pick up irons!
>
>
>Some Irons do seem to rust no matter what you do to them, but I have
>succsfully stabilized 6 kilos of campo and it is as fresh as the day it
>was cut over a year on.
>
>The best stuff I have found is 'Lithium Grease', just spread a smear on
>iron slices all over on and then wipe off the excess it protects for at
>least 6 months...
>
>
>Mark Ford
>
>
>
>-----Original Message-----
>From: [EMAIL PROTECTED]
>[mailto:[EMAIL PROTECTED] On Behalf Of Bill
>Mason III
>Sent: Monday, October 10, 2005 3:21 AM
>To: 'Steve Schoner'; [email protected]
>Subject: RE: [meteorite-list] RE: POLL: rustiest most unstable known
>
>Dear, I give up rusters. I'm perplexed at the people who have given up!
>Why can I solve the problem of continued corrosion and you
>can't?
>I'm not magic and I can understand the cause of corrosion. Why doesn't
>anybody start thinking what causes rust? OPEN conversation invited!
>
>Bill Mason "rusty"
>
>-----Original Message-----
>From: [EMAIL PROTECTED]
>[mailto:[EMAIL PROTECTED] On Behalf Of Steve
>Schoner
>Sent: Sunday, October 09, 2005 4:46 PM
>To: [email protected]
>Subject: [meteorite-list] RE: POLL: rustiest most unstable known
>
>harlan trammell
>Thu, 06 Oct 2005 20:30:15 -0700
>
>ok, folks what it is? let's see the TOP 10 sweatiest,
>crappiest, rustiest, hear-it-crackle- as it falls
>apart in your hands 5 seconds after sawing, skyrox.
>i'll start with: tsarev, brahin, campo. what have YOU
>got?!
>
>MT. DIEU... PEEEE-UUUUU !
>
>Nearly impossible to cure.
>
>Steve Schoner/AMS
>
>
>
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