Across
- 5. type of igneous rock with large crystals
- 7. made of SOLID iron and nickel
- 10. hot molten rock inside the Earth
- 11. outermost layer of the earth
- 14. contains metals
- 15. small pieces that reflect light in rocks
- 17. magma on the surface of the Earth
Down
- 1. used for removing dead skin
- 2. used for industrial extraction of metals
- 3. made of LIQUID iron and nickel
- 4. glass like rock, used to make surgical blades
- 6. studies rocks
- 8. made from cooling of lava
- 9. colour of the powdered or crushed mineral
- 12. earth's solid layer which FLOWS
- 13. Mohs scale is a measure of this property of rocks
- 16. a basalt with holes