rocks

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Across
  1. 2. wiring
  2. 3. an actor
  3. 6. pebble
  4. 7. takes millions of years to form
  5. 10. most abundant element in earth's crust
  6. 12. the densest natural element
  7. 13. the most complex mineral
  8. 14. scrooge Mcduck loves this
  9. 15. boulder
  10. 16. green green green green green
Down
  1. 1. the most common mineral
  2. 4. you know this one from a game called minecraft
  3. 5. was used during the aztec empire
  4. 8. the hardest thing
  5. 9. has a lot of calcium
  6. 10. the longest word ever
  7. 11. helps our immune system
  8. 17. rock