A bit of a puzzle

[Bruce R]

I have a Whites Prism 2, I was out detecting the other day at an old church picnic grove and I got a solid hit for a dime. After digging a hole the size of my coil and about 8 inches deep, I can find nothing with my pinpointer, if I sweep it with the detector it's still there, the pointer works fine. Any thoughts on this ? It already seems to be a major excavation for a lousy dime.

 

[Loco-Digger]

I would believe the target is larger than a dime..

 

[Bruce R]

That's a thought, maybe I'll go back after it, but the deeper I go the rockier it gets.

 

[dave_e]

Large, deep piece of iron


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[Bruce R]

When I switch to all metals it still comes up as a dime.

 

[chub]

bust the halo with a shovel. or its a very large dime ...

chub

 

[Bruce R]

Went back today and dug 4 inches deeper and the signal disappeared completely !!!

 

[Charlie P. (NY)]

Your detector is telling you it is something (or multiple things) with the same relative conductivity as a dime. Could be larger and deeper.

Try sweeping from different approach angles and lifting the coil a bit between passes.

But the only way to know is dig and keep a mental record of how what it was reacted.