Hi Jeff,
400 grit is ok for Gibeon but do not dilute the RS etchant! To minimize
the hazing you should go a little finer than 400, if you have a bench
grinder go spend about $10 & get a buffing wheel & some black polishing
compound at your local Ace hardware. Remember to polish from the center of
the slice out & stay away from the edges for your safety & so that you do
not "roll" the crisp edge over. You can do this on Gibeon because of the
tight crystal pattern but polish lightly only to take the "edge" off of the
sanding scratches.
Sincerely,
Jim
James Hartman
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www.meteorite1.net
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----- Original Message -----
From: <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Cc: <[EMAIL PROTECTED]>
Sent: Monday, January 06, 2003 7:40 AM
Subject: [meteorite-list] etching irons with ferric chloride
> Howdy Folks,
>
> I'm a bit new to the meteorite world, and when I read Jim Hartman's
> Meteorites 101 a couple months ago about etching irons, I had to give it a
> try.
>
> I've been etching and re-etching a gibeon slice that I had (with some
> visible blade marks that I wanted to grind out), and finally think I'm
> getting close to a good etch.
>
> However, I keep getting clouds or haze around trollite inclusions. The
> "rubbing" step seems to help this, but no amount of rubbing makes it fully
> go away.
>
> I'm following Jim's instructions as religiously as I know how (including
> using hot running tap water - something I was afraid of at first). I'm
> diluting my radio shack etchant about 1:4. Also, I'm only sanding to 400
> grit, not 600 or 1200 like some suggest.
>
> Anyone else seen this kind of problem?
>
> Thanks in advance for the help,
>
> Jeff
>
>
>
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