Across
- 2. Greenish-brown color
- 3. Light grey, crumbles easily
- 5. Dark black color, used in old locomotives
- 10. Reddish-brown, has lots of little holes
- 11. Made of lava subjected to intense heat/pressure
- 13. Salt and pepper colored, also used in countertops
- 14. Crumbles easily, straw colored
- 15. Found in Middle TN
Down
- 1. White colored, found in countertops
- 4. Made of hardened volcano lava
- 6. Dark black color, glassy texture
- 7. Sounds like the "s" word
- 8. made of sediments
- 9. Dark red color
- 12. Used in old chalkboards