[meteorite-list] How to etch meteorites

From: ruben garcia <meteoritemall_at_meteoritecentral.com>
Date: Thu Apr 22 10:27:50 2004
Message-ID: <20031117030323.16997.qmail_at_web20808.mail.yahoo.com>

 Hi Rene and list,
 I just saw the link that was sent to you regarding
 ferric chloride etching. Although the link does
 explain etching with ferric chloride quite well, it
 doesn't go into much detail about the stability of
 that type of etch. There is a place for ferric
 chloride in etching, after all it does give a better
 separation of the pattern as well as a great
 holographic type etch. However after years of
 experimentation with it and nearly every other type
 of
 chemical that will produce an etch I would say
 without
 a shadow of a doubt that Nitric acid and alcohol
 does
 a better overall job. The Nitric solution leaves a
 meteorite more stable ( all things being equal that
 is)as far as rust goes . Of course if you are
 etching
 something as inexpensive as a Campo you may not mind
 a
 little experimenting.
 
 Ruben Garcia
 ( mr-meteorite on ebay)
 
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Received on Sun 16 Nov 2003 10:03:23 PM PST