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Rock ID?

Ang

New Member
Joined
Jun 28, 2017
Messages
8
Location
Pickford, MI
This was perhaps my second time out metal detecting and I found this a couple weeks back. Not very knowledgeable about rocks.. Found it Eastern Upper Penn of Michigan. Any opinions would be nice, Thanks! :)
P.S - It was hitting at around 66-75.
 

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i've found chunks of stuff similar to that. i don't think it's rocks though, i think it's that cast pot metal stuff, somewhat similar to what engines are made out of.
if that had a smoother surface i'd guess it to be melted aluminum.
 
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