Across
- 4. Hollow rock formations
- 6. Rock that forms from hot, molten rock
- 7. This is used to identify a few minerals
- 8. Type of rock formed from pre-existing rocks
- 10. When a mineral breaks easily along flat surfaces
- 11. The term for magma when it reaches Earth's surface
- 13. How atoms arrange themselves in a crystal structure
Down
- 1. Measured using the Mohs Hardness Scale
- 2. Molten rock found deep within Earth
- 3. How light is reflected from a mineral's surface
- 5. Type of rock that started out as another type of rock
- 7. A solid whose atoms are arranged in a pattern
- 8. The color of a mineral's powder
- 9. When a mineral breaks apart in an irregular way
- 12. Long and narrow mineral formations