[meteorite-list] How to etch meteorites

From: ruben garcia <meteoritemall_at_meteoritecentral.com>
Date: Thu Apr 22 10:27:50 2004
Message-ID: <20031117021503.37943.qmail_at_web20810.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 09:15:03 PM PST