Across
- 2. rocks found with a UV light
- 3. go to places with a tent or camper
- 4. what happens to precipitation when it is cold
- 5. nodules that are formed by a copper process
- 6. what forms on lakes when it is below freezing
- 9. fossil found abundantly in Milan, Michigan
- 12. prehistoric fossil that is prized by all
- 13. rock found with crystals inside
Down
- 1. Another name for Petoskey stone
- 4. lightning stones found on Lake Michigan
- 7. the remains of a prehistoric organism
- 8. used for pipes and wiring
- 10. going from one place to another
- 11. travel to places to collect rocks