Across
- 4. - Consists of 10 minerals arranged from hardest to softest
- 6. - Small amounts of different elements can give the same mineral different _____.
- 10. - Used to describe how light is reflected from the surface of a mineral
- 12. - The sizes and shapes of grains, the relationships between neighboring grains, and the orientation of grains within a rock
- 13. - Allowing light, but not detailed shapes, to pass through
- 14. - A clear luster
- 16. - Minerals that usually contain iron
- 18. - A solid chemical compound with a fairly well-defined chemical composition and a specific crystal structure
- 20. - The visible expression of a mineral’s internal arrangement of atoms
Down
- 1. - Many yellow, dark orange, or brown minerals
- 2. - the external shapes displayed by individual mineral crystals
- 3. - the uneven breakage of a mineral
- 5. - A measure of the resistance of a mineral to being scratched
- 7. - Not able to be seen through
- 8. - How heavy a mineral seems compared with its size
- 9. - A earthy luster
- 11. - Allowing light to pass through so that objects behind can be distinctly seen
- 15. - The color of a mineral in its powdered form
- 17. - The tendency of a mineral to break along flat, even surfaces
- 19. - A chemical reaction that occurs between an acid and a base