Why ZnO is called Philosopher's Wool?

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  1. #rituals
  2. #white
  3. #would
  4. #tufts
  5. #which
  6. #called
  7. #woolly
  8. #philosopher
  9. #collect
  10. #latin
  11. #residue
  12. #compound
  13. #alchemists
  14. #philosophica
  15. #oxide
  16. #their
  17. #meaning
  18. #formed