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<p>[QUOTE=&quot;coleguy, post: 364476, member: 9167&quot;]That is a strange occurance, to say the least, acanthite. I&#039;ll have to break out my IHC&#039;s and see what I have. Can&#039;t say I&#039;ve ever seen anything like it. I&#039;ve seen manganese do that under extreme pressure from heat and cooling fluctuations in railway frogs, which leads to failure and breaking. Maybe the same effect can occur in other metals as well.</p><p>Guy~[/QUOTE]</p><p><br /></p>

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