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Etching irons
- To: meteorite-list@meteoritecentral.com
- Subject: Etching irons
- From: fronefld@magicnet.net (Dan and Val Fronefield)
- Date: Fri, 06 Mar 1998 10:03:39 -0500
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- Resent-Date: Fri, 6 Mar 1998 10:06:34 -0500 (EST)
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I have had mixed success in etching iron meteorites, particularly Gibeon.
On several occasions, I have obtained a very sharp etch, which reflects
light in bright lines. Other times the effect is much more muted. I use an
10-1 ethanol/nitric acid mix over about 30-40 minutes. Is this difference
due to the method, or due to the angle of the cut relative to the crystal
structure? Does anyone have a method which consistently produces the
bright, sharp etch?
Your help is appreciated
Dan Fronefield