Across
- 1. Ex: emerald, ruby, topaz, amethyst, peridot, sapphire.
- 5. It's in the title.
- 7. Mineral/rock that have a useful substance that can be mined.
- 8. Breaks along flat surfaces.
- 9. Means that atoms are arranged in a pattern that is repeated over and over again.
- 12. Naturally occurring, _______ solid with a definite chemical composition and an orderly arrangement of atoms.
- 13. How heavy a mineral sample feels.
- 14. Mineral deposits left behind that fill cracks, faults and surfaces between rock formations.
- 17. Sold in which atom are arranged in orderly, repeating patterns.
- 18. Minerals with (O) and (Si).
- 19. Softest mineral.
Down
- 2. Melted rock material.
- 3. Process in which substance is melted to separate it from unwanted materials.
- 4. Opposite of cleavage.
- 6. Ratio of weight compared with weight of an equal volume of water.
- 10. How a mineral reflects light.
- 11. Hardest mineral.
- 13. How easily a material is scratched.
- 15. Scale that lists the hardness of minerals (key word "scale").
- 16. Color of mineral in a powdered form.