Across
- 3. grind to a powder,true color
- 4. smash and melt ore to get metals
- 7. rock with minerals in it
- 9. hard,glassy
- 10. rating scale
- 12. smooth breaks
Down
- 1. materials dissolved in a liquid
- 2. jagged breaks
- 5. how mineral reflects light
- 6. hollow rock lined with minerals
- 8. not from living things
- 11. slab of minerals in a crack
- 13. mixture of mineral