Related Clues:
- Groundbreaking discoveries?
- Rock groups?
- They're in veins
- Miner concerns
- Cobaltite and mispickel
- Assayers' samples
- These can be found in pockets
- Valuable deposits
- They're found in veins
- Minerals in stores?
- They're found in streaks
- Gets the lead out?
- They're often unearthed
- Metallic rocks
- Hematite and malachite