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	35
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									41

Across 3. The most common mineral in the crust 4. Happening at the mid ocean ridge 6. The most dominant erosional agent 11. Plates colliding 12. Movement without fracture 13. Colour of the powdered mineral 14. Lens shaped intrusive igneous body 16. The direction of the intersection of a folded rock with the horizontal 17. Rocks that have been altered from their previous form 18. Largest intrusive body 21. Folding upwards 22. Headwall falls 24. Sedimentary rocks over crystalline rocks 25. Only common non silicate mineral 28. Tendency of a mineral to break along smooth planes 32. Economically important minerals 34. Formed by high heat 35. A rock with strong banding of light and dark minerals 36. A foliated rock rich in mica 37. Hardest mineral 39. The most common rock in oceanic crust 41. Axial line of a syncline

Down 1. Liquid part of the Earth 2. Continental drift and ocean floor spreading 5. Strongly magnetic mineral 7. Formed by high pressure 8. Sedimentary rock stratums are younger than those below it 9. Axial line of a anticline 10. Softest mineral 12. Parallel flat elongated crystal structure 15. Fine grained texture 19. Theory which explains mountain roots 20. Form from the alteration of other minerals 23. Quality of the reflected light 26. Rocks formed from weathered particles of rocks 27. Most common element in the crust 28. What minerals form given time and space 29. Has perfect cleavage in one direction 30. Born of fire 31. Fracture without movement 33. The most common rock in continental crust 38. Movement with fracture 40. Molten rock on the surface