Across
- 1. is used to remove dead skin cells due to its rough surface
- 3. miners would often confuse gold with pyrite, also called ____ gold.
- 5. is a measure of how well a mineral resists scratching
- 8. if sediementary and igenous rocks are put under heat and _____, the shape or the size of the crystals within them can change
- 9. is a common intrusive rock
- 10. on ___' hardness scale, minerals are ranked from 1 to 10.
- 11. an igenous rock that forms from lava on Earth's surface is called an ____ rock
- 15. is the way a mineral reflects light from its surface
- 17. is an example of a mineral with a monoclinic structure
- 18. obsidian is an example of an extrusive rock that has no ____.
- 19. ground _____ is an ingredient in concrete
- 21. Iron is found in the rock ___.
- 22. The three types of rock are: ____, igneous, and metamorphic
- 25. in India was built using white marble
- 26. is a mineral that is rare, beautiful, usually transparent, and glitters or shines in light
Down
- 2. is a solid whose shape forms a fixed pattern
- 4. Topaz is an example of a mineral with an _____ structure
- 6. rocks are made of different materials that have been compacted and cemented together
- 7. is a more compact rock than limestone, with crystals that are locked together like pieces of a jigsaw puzzle
- 12. a pure substance that cannot be broken down into a simpler substance
- 13. is the property a mineral shows when it has uneven or rough surfaces
- 14. is described by the number of planes along with the mineral breaks
- 16. gems may be used in _____.
- 20. when an igneous rock forms from magma inside Earth, it is called a ____ rock.
- 22. is the color of the powder left when the mineral is rubbed on a rough surface
- 23. is a shiny metamorphic rock that contains minerals that give it brilliant colors
- 24. is an example of a mineral with a hexagonal structure