[meteorite-list] etching solution
From: Pekka Savolainen <pekka.savolainen_at_meteoritecentral.com>
Date: Thu Apr 22 10:21:06 2004 Message-ID: <3F1848B3.7080600_at_dlc.fi> --------------050404090604060705060303 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 8bit Hello, Mark and the list, think ferric chloride is not strong enough to etch Fe / Ni, but havenīt ever tried...;- You can find a quite good recipe for the etching solution from R.O. Nortons book Rocks from Space (page 415). There is also advised, how to check Ni from the potential meteorites (page 417). You should have the nitric acid from the drug store, but if possible, please, check the recipe first, you need also some other components to make the mix. If you use 100 % nitric acid, the result may be, if not a catastrophe, but quite near to that. And even with not so strong solutions, latex gloves and goggles should be worn to avoid to hurt yourself. take care, pekka Mark Jackson wrote: > Dear List, > > > > I'm trying to locate etching solution capable of etching Widmanstatten > patterns to view on meteorites. I understand it's nitric acid? I got > the "bright" idea of checking my local electronic supply house for PC > board etching solution and it seems that ferric chloride is used to > etch copper from the breadboards. I got a B in college chemistry and > that makes me question the usefulness of using ferric chloride on a > meteo(rite/wrong). Am I correct in questioning this practice? Where > can I find, or how can I extract, nitric acid to use if I am correct? > > > > Many thanks, > > > > Mark > > ------------------------------------------------------------------------ > Do you Yahoo!? > Free online calendar > <http://us.rd.yahoo.com/mail_us/tag/*http://calendar.yahoo.com> with > sync to Outlook(TM). -- Pekka Savolainen Jokiharjuntie 4 FIN-71330 Rasala FINLAND + 358 400 818 912 Group Home Page: http://www.smartgroups.com/groups/eurocoin Group Email Address: eurocoin_at_smartgroups.com --------------050404090604060705060303 Content-Type: text/html; charset=us-ascii Content-Transfer-Encoding: 7bit <html> <head> </head> <body> <br> Hello, Mark and the list,<br> <br> think ferric chloride is not strong enough to etch Fe / Ni, but haven´t<br> ever tried...;-<br> <br> You can find a quite good recipe for the etching solution from R.O.<br> Nortons book Rocks from Space (page 415). There is also advised,<br> how to check Ni from the potential meteorites (page 417).<br> <br> You should have the nitric acid from the drug store, but if possible,<br> please, check the recipe first, you need also some other components<br> to make the mix. If you use 100 % nitric acid, the result may be, if<br> not a catastrophe, but quite near to that.<br> <br> And even with not so strong solutions, latex gloves and goggles should<br> be worn to avoid to hurt yourself.<br> <br> take care,<br> <br> pekka<br> <br> Mark Jackson wrote:<br> <blockquote type="cite" cite="mid:20030718183649.39392.qmail_at_web60003.mail.yahoo.com"> <div>Dear List,</div> <div> </div> <div>I'm trying to locate etching solution capable of etching Widmanstatten patterns to view on meteorites. I understand it's nitric acid? I got the "bright" idea of checking my local electronic supply house for PC board etching solution and it seems that ferric chloride is used to etch copper from the breadboards. I got a B in college chemistry and that makes me question the usefulness of using ferric chloride on a meteo(rite/wrong). Am I correct in questioning this practice? Where can I find, or how can I extract, nitric acid to use if I am correct?</div> <div> </div> <div>Many thanks,</div> <div> </div> <div>Mark</div> <hr size="1"> Do you Yahoo!?<br> Free <a href="http://us.rd.yahoo.com/mail_us/tag/*http://calendar.yahoo.com"> online calendar</a> with sync to Outlook(TM). </blockquote> <br> <pre class="moz-signature" cols="$mailwrapcol">-- Pekka Savolainen Jokiharjuntie 4 FIN-71330 Rasala FINLAND + 358 400 818 912 Group Home Page: <a class="moz-txt-link-freetext" href="http://www.smartgroups.com/groups/eurocoin">http://www.smartgroups.com/groups/eurocoin</a> Group Email Address: <a class="moz-txt-link-abbreviated" href="mailto:eurocoin_at_smartgroups.com">eurocoin@smartgroups.com</a> </pre> <br> </body> </html> --------------050404090604060705060303--Received on Fri 18 Jul 2003 03:21:23 PM PDT |
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