Across
- 3. hardness of 5.5 to 6.5 ore iron of steel.
- 6. it is used for a food additive and also melts ice.
- 8. for building stones it bubbles with acid and has a hardness of 3.5
- 9. common colors is white to gray has a hardness of 6
- 10. uded for galss jewelry and electronics has a hardness of 7
- 12. used for jewelry (NYS) Gem /abrasives has a hardness of 6.5 to 7.5
- 16. has a hardness of 5.5 and goes from black to dark green
- 18. it is hydrofluoric acid has a hardness of 4
- 19. for ceramics/ paper
- 20. for paint roofing
Down
- 1. hardness of 6.5 ore of sulfur
- 2. it is for drywall and has a hardness of 2
- 4. used for pencil lead
- 5. used for mineral collections and jewelry and has a hardness from 5 to 6
- 7. used for construction materials
- 11. used for cement and has a hardness of 3
- 12. ore lead of batteries
- 13. the common colors are yellow to amber and has a hardness of 2
- 14. used of rfunrace bricks and jewelry
- 15. used for ceramics and glasshas a hardness of 6
- 17. ore of iron jewelry hardness of 5.5 to 6.5