Across
- 2. has three directions of cleavage the meet at 90-degree angles.
- 4. is the visible expression of minerals internal arrangement of atoms.
- 8. occurs when a piece of transparent calcite is placed over printed lines the lines appear doubled.
- 10. that compose minerals are a minerals composition.
- 12. arrangement is a minerals structure.
- 15. has hexagonal crystals.
- 16. has a density around 7.5g/cm3.
- 17. describe minerals that have crystals of the same shape.
- 21. is the hardest mineral.
- 22. has three directions of cleavage that meet at 75-degree angles.
- 24. fractures occur when minerals break into smooth carved surfaces.
- 26. is a metallic mineral that is easily shaped.
- 27. feels greasy.
- 29. is used to describe how light is reflected from the surface of a mineral.
- 30. has a density of 8.96g/cm3
Down
- 1. will attract paper clips and small nails.
- 3. is a measure of the resistance of a mineral to being scratched.
- 5. belongs to a cubic crystal system.
- 6. have a density that is a constant value.
- 7. lusters are used to describe minerals that look somewhat metallic.
- 9. is the tendency of a mineral to cleave or break.
- 11. is another way to describe mineral with nonmetallic lusters.
- 13. is the softest mineral.
- 14. are used to describe minerals with a metallic appearance.
- 18. is the color of a mineral in it's powdered form.
- 19. shows the simplest type of cleavage.
- 20. = mass/volume.
- 23. occurs when a drop of HCL acid touches a carbonate mineral.
- 25. fractures occur in most minerals.
- 28. is a way to describe minerals with non-metal lusters.