Rocks and Minerals

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Across
  1. 3. shale is made of
  2. 4. metamorphism that occurs when a rock is under intense pressure because it is underground
  3. 5. Minerals that has the special property of being magnetic
  4. 8. the internal arrangement of _____ determines a minerals properties
  5. 9. rock type that forms from the compaction and cementation of sediments
  6. 12. rock that has banding
  7. 14. rock type that forms from the solidification of lava/magma
  8. 15. can only be found in sedimentary rocks
  9. 17. sedimentary rock composed of large fragments like pebbles
  10. 20. type of igneous rock that forms on the surface of earth and has small crystals (fine texture)
  11. 21. mineral commonly found in pencils
Down
  1. 1. when a mineral breaks in random orientation it is called
  2. 2. when a mineral breaks in perfect slices or pieces on perfect angles it is called
  3. 3. metamorphism that occurs when lava/magma touches a rock
  4. 6. type of igneous rock that forms underground and has large mineral crystals
  5. 7. property that determines if a mineral can scratch glass or not
  6. 9. parent rock of quartzite
  7. 10. rocks are usually composed of
  8. 11. fine-grained, dark-colored, igneous rock is most likely
  9. 13. chemical sedimentary rock that forms when sea water evaporates
  10. 16. mineral that bubbles when it comes in contact with acid
  11. 18. obsidians texture is considered
  12. 19. rock type that forms from subjecting a rock to intense heat and pressure