Across
- 3. not for stoneware, 5%-50% of a earthenware clay body
- 5. does not fire too vitreous
- 8. sodium and lead
- 9. mineral form of silica powder used in ceramic glazes and clay bodies
- 13. nepheline syenite, feldspar, and cornish stone
- 14. alumina,flint,silica sand, quartz, & cristobalite
- 16. progressive partial fusion of a clay, or a body of clay as a result of a firing process
- 18. made up of four components- clays,fluxes, and hardeners & openers
- 19. boron oxide and bismuth oxide
- 20. melts at 2102-2372f
- 21. interact with glass-forming silica
Down
- 1. calcium and magnesium oxides
- 2. crystalline form of silica
- 4. contain significant proportions of flint that was weathered and transported
- 6. sand often used in clay bodies instead of grog or to augment grog
- 7. up to 25% of a clay body, fuses at 2282f
- 10. flux that softens slowly
- 11. alters the vitrification temperature of the clay
- 12. melts at 2012-2192f
- 15. highly refractory and has a very high melting temperature (3722°F)
- 17. flux that softens slowly