Message:

<p>[QUOTE=&quot;Bart9349, post: 1417511, member: 5682&quot;]Those are neat machines. Thank you for the picture.</p><p><br /></p><p>The &quot;contaminants&quot; the device detected are possibly just residual natural minerals that persisted despite the best purifying attempts to extract the desired metal.</p><p><br /></p><p>(Although I got a chemistry degree 30 years ago, I have no authority to talk about anything in chemistry since I haven&#039;t used my degree in more than a quarter century.)</p><p><br /></p><p>As an aside, I am always dismayed that the Ancient experts have not utilized this technology more. It seems to me that we could use this technology to better learn about the sources and techniques of Ancient coinage. The arguement is that it shows only surface minerals and not deeper levels. Fair enough. Perhaps, because of chemistry principles I never knew, the superficial surface levels, aside from outside contaminations, don&#039;t reflect the true makeup of the coin. </p><p><br /></p><p>guy[/QUOTE]</p><p><br /></p>

Your name or email address:

Do you already have an account?

• No, create an account now.
• Yes, my password is:
• Forgot your password?

Stay logged in