Hello,
I use the Garrett AT Pro, and a couple months ago I discovered a rock that beeps near the penny range, usually at 78. I have no idea if it's just a man-made rock with some metal trapped in it, or if it could actually be something unique. It's very very heavy for its small size and is very rough with jagged edges. It's about the size of a credit card, just slightly thinner.
Here are a few pics:
https://metaldetectingforum.com/attachment.php?attachmentid=374496&stc=1&d=1485656012
https://metaldetectingforum.com/attachment.php?attachmentid=374497&stc=1&d=1485656012
Any help would be greatly appreciated.
I use the Garrett AT Pro, and a couple months ago I discovered a rock that beeps near the penny range, usually at 78. I have no idea if it's just a man-made rock with some metal trapped in it, or if it could actually be something unique. It's very very heavy for its small size and is very rough with jagged edges. It's about the size of a credit card, just slightly thinner.
Here are a few pics:
https://metaldetectingforum.com/attachment.php?attachmentid=374496&stc=1&d=1485656012
https://metaldetectingforum.com/attachment.php?attachmentid=374497&stc=1&d=1485656012
Any help would be greatly appreciated.
