Across
- 6. the smallest unit of an element
- 8. a light colored coarse grained intrusive rock consisting primarily of quartz
- 9. most abundant mineral in the Earth's crust
- 11. minerals with the same composition but different crystal structure
- 13. the substance that makes up the universe
- 14. coarse grained
- 15. the process that converts sediments into solid rocks
- 17. form by lithification of sediment
- 19. a gray fine grained volcanic rock consisting of plagioclase
- 20. occurs within the plate far from any plate boundary
Down
- 1. tendency to break along other surfaces
- 2. formed from the solidification of magma
- 3. tendency of minerals to break along flat planar surfaces into geometries
- 4. a dark coarse grained intrusive rock
- 5. form by the transformation of pre-existing rocks
- 7. a fine textured dark brown to black extrusive rock
- 10. igneous texture in which crystals visible to the naked eye are embedded in a matrix of aphanitic texture
- 12. crystals initially begin as them
- 16. fine grained
- 18. texture of igneous rock with a high glass content