Across
- 3. A hard material made of minerals.
- 4. A rock formed by cooled magma or lava.
- 6. A mineral's resistance to being scratched.
- 9. A coarse-grained sedimentary rock composed of rounded fragments within a matrix of finer grained material.
- 10. A rock that has been changed because of heat and pressure.
- 12. When a rock breaks in predictable patterns.
- 13. Degree of consistency measured by the quantity of mass per unit volume.
- 14. A solid material that is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivity.
Down
- 1. When a rock breaks into random pieces.
- 2. A naturally occurring solid material from which a metal or valuable mineral can be profitably extracted.
- 5. A rock formed by the sediments of other rocks.
- 7. The mark left behind by a mineral when it is scratched against a streak plate.
- 8. The way light reflects off a mineral.
- 11. A solid, naturally occurring, inorganic material with a specific atomic structure and arrangement.