Nic Strobel Puzzle 5

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Across
  1. 1. Fluxes and what are the most important materials to change clay.
  2. 4. What alters the vitrification temperature of the clay?
  3. 6. What flux melts at 2102-2372f?
  4. 8. Flint was first formed as what type of rock?
  5. 10. Alumina is most commonly used in what type of ceramic material?
  6. 12. What makes up 5%-50% of an earthenware body clay?
  7. 13. Silica sand is also used as a lubricant on the shelves of what?
  8. 14. Alumina has the same sintered cystal body as sapphire and what other gem stone.
  9. 16. what flux makes up 25% of a clay body?
  10. 18. Flint is not for what?
Down
  1. 2. What material acts as a hardener in glass, glazes, clays, and all ceramic materials.
  2. 3. Cristobalite is available as a what?
  3. 5. What is the mineral form of silica powder used in ceramic glazes and clay bodies.
  4. 7. What flux melts at 2012-2192f?
  5. 9. What is a crystalline form of silica?
  6. 11. What is often used to reduce body firing shrinkage and fired warpage?
  7. 12. A clay body is mode up of how many components?
  8. 15. What is it called when you add extra things to clay after you dig it up?
  9. 17. Silica sand is often used instead of what material?
  10. 19. Fluxes do not act how?