[meteorite-list] The Dreaded Rust!

From: meteorites_at_space.com <meteorites_at_meteoritecentral.com>
Date: Thu Apr 22 09:46:22 2004
Message-ID: <20010506191041.3522.cpmta_at_c000.snv.cp.net>

On Sun, 06 May 2001, "kentnorwood" wrote:

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> <DIV><FONT face=Arial size=2>Hi List,</FONT></DIV>
> <DIV>&nbsp;</DIV>
> <DIV><FONT face=Arial size=2>&nbsp;&nbsp;&nbsp; I have a Campo and a Canyon
> Diablo that are beginning to show rust.&nbsp; From "The Meteorite &amp; Tektite
> Collector's Handbook", I have a choice of using sodium citrate, sodium
> hydrosulfate, oxalic acid, or tartaric acid to remove the rust.&nbsp; I have
> never bought or used any of these and would like to ask the list which I should
> choose.&nbsp; Are they available at a hardware store or ?</FONT></DIV>
> <DIV><FONT face=Arial size=2>&nbsp;&nbsp;&nbsp; The book also tells me
> to&nbsp;seal the specimens&nbsp;using lacquer;&nbsp; Which brand&nbsp;or type
> should I use?</FONT></DIV>
> <DIV>&nbsp;</DIV>
> <DIV><FONT face=Arial size=2>Thanks,</FONT></DIV>
> <DIV><FONT face=Arial size=2>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; Kent
> Smith</FONT>&nbsp;</DIV></BODY></HTML>

oxalic acid can be obtained at any automotive store. Its the tank dip, dark brown stuff used to clean carbs and auto parts.

I have never tried it on meteorite rusting, and I am not sure if it will work as effectively as using 70% isoproypl with a teaspoon of Red Devil lye (NaOH) per cup.

I think that FeCl3 is acidic, so a strong base such as NaOh should take care of that better than any acid.

Steve Schoner.

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Received on Sun 06 May 2001 03:10:41 PM PDT

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