2Minnesota
Bronze Member
- Jul 12, 2008
- 1,100
- 422
- Detector(s) used
- Tesoro Tiger Shark, Whites 5900/Di Pro
- Primary Interest:
- All Treasure Hunting
We enjoy hunting rocks/fossils as a family but not real knowledgeable about most. This is an interesting rock. Any ideas what it could be? Looks like quartz on the inside and the outside is definitely metallic. Doesn't slough off like shale. I tested it for gold but at the 10k acid test it failed.