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Location is everything when looking for gold. Check around, there may be some good areas. I know there are a lot of native copper deposits in Michigan, and they can valuable too! People will pay a lot for specimens like this one that came from there!

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Yeah, most all of it is in the UP from the sounds of it. There was a gold mine operating up near Marquette up until about 1991 from what I read. There was a big volcanic area up there near Lake Superior that carried a lot of minerals up through the porous rocks via steam, then it settled and hardened in layers.