Gabby Clement puzzle

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Across
  1. 4. a crystalline form of silica, also available as a powder
  2. 5. The material that acts as a hardener in glass, glazes, clays and all ceramic materials.
  3. 7. the cracking that occurs in fired ceramic bodies
  4. 8. done to mature the clay and give the clay oppurtunity to heal imperfections
  5. 9. used to add texture or add gritty
  6. 10. table a table of elements arranged in an informative array
  7. 13. melts at 2102- 2372f
  8. 15. adding other things to clay after you dig it up
  9. 16. a group of clay that consist of china, earthenware,stoneware,or tile
  10. 18. up to 25% of clay body,fuses at 2282f
Down
  1. 1. room temperature quartz
  2. 2. melts at 2102-2372f
  3. 3. the mineral form of silica powder used in ceramic glazes and clay bodies
  4. 6. formed when exposed to high heat and pressure, causing change
  5. 8. often used in clay bodies instead of grog
  6. 11. a form of quartz and has a different form of physical appearance
  7. 12. a high temperature polymorph of silica with a crystal structure
  8. 14. makes two pieces come together, like a resin
  9. 17. alters the vitrification temperature of the clay