Rocks and minerals

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Across
  1. 3. the hardest mineral
  2. 5. when a mineral breaks predictably
  3. 9. when a mineral breaks randomly
  4. 10. dark colored igneous rocks
  5. 12. type of rock formed from heat and pressure
  6. 15. a rock made from pebbles
  7. 16. this mineral reacts with acid
  8. 17. gypsum and rock salt form when this happens
  9. 19. the way a mineral reflects light
  10. 21. this mineral solidifies first according to Bowen's Reaction series
  11. 22. fools gold
  12. 23. type of rock formed from lava or magma
Down
  1. 1. limestone and dolostone can turn into this type of rock
  2. 2. this is not a mineral because it used to be alive
  3. 4. gas pockets
  4. 6. this mineral solidifies last
  5. 7. type of rock formed from cementation of sediment
  6. 8. when the minerals in a metamorphic rock separate by color
  7. 11. mineral alignment
  8. 13. this is the name of the hardness scale
  9. 14. light colored igneous rocks
  10. 17. a rock that forms at or near the surface
  11. 18. when the rock forms inside the earth and has large crystals
  12. 20. this mineral has a strong red brown streak