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Old 07-08-2017, 06:49 PM
Ang's Avatar
Ang Ang is offline
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Join Date: Jun 2017
Location: Pickford, MI
Posts: 8
Default Rock ID?

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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Started 6/17/2017: CLAD: $17.45 Wheat: 2 Rings: 1
Oldest Coin: 1919 Wheat
Detector: Fisher F22 / Garrett Pro Pointer AT

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Old 07-08-2017, 10:04 PM
007tallguy's Avatar
007tallguy 007tallguy is offline
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Join Date: Oct 2010
Location: Nova Scotia, Canada, eh.
Posts: 7,329

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.

AT Pro, Ace 250
2018: $14.70

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