Rocks and Minerals

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Across
  1. 3. what is number 1 on the Moh's scale of hardness?
  2. 6. what is number 10 on the Moh's scale of hardness?
  3. 9. what type of rock is formed from lava
  4. 13. what is the way a mineral reflects light
  5. 14. what is a mineral that is formed when the solution it is in evaporates
  6. 15. the porcelain plate you use to find chemicle composition
  7. 16. the measure of how easily a mineral can be scratched
  8. 18. one or two metallic elements and the ion C03(2-)
  9. 19. a play of colors, caused by the bending of light rays
Down
  1. 1. the ratio of the mass of a substance to a mass of an equal volume of water at 4 degrees celsius
  2. 2. minerals that contain silicon and oxygen
  3. 4. a geometric solid having four sides that are equilateral triangles
  4. 5. what type of rock will you find in a river?
  5. 7. occurs when a reaction with hydrochloric acid causes calcite in limestone to fizz
  6. 8. what is a mineral mined for profit
  7. 10. what is a mineral that is mostly used in jewelry?
  8. 11. a compound of oxygen and a metallic element
  9. 12. when a mineral splits evenly along one or more flat planes
  10. 16. what mineral looks like cubes under a microscope
  11. 17. when a mineral breaks along jagged lines