Quote:
Originally Posted by DavidU
I've often wondered what acid is used to etch the Widmanstatten lines.
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I used Nitric acid to etch mine (years ago) and, providing you use standard safety procedures, it is very safe. I was led to believe that Widmanstaten Lines can only be found in Meteorites due to a cooling of the original molten material at a rate of 1 degree per million years. Not my area of expertise so I can't swear to it.
Charles