
1) China clay 2) China stone 3) Clay 4) Kaolin 5) Porcelain clay 6) Terra alba
Found on
https://www.crosswordclues.com/clue/kaoline

1) Kaolin
Found on
https://www.crosswordclues.com/clue/kaoline

• (n.) A very pure white clay, ordinarily in the form of an impalpable powder, and used to form the paste of porcelain; China clay; porcelain clay. It is chiefly derived from the decomposition of common feldspar.
Found on
http://thinkexist.com/dictionary/meaning/kaoline/

<chemical> A very pure white clay, ordinarily in the form of an impalpable powder, and used to form the paste of porcelain; China clay; porcelain clay. It is chiefly derived from the decomposition of common feldspar. ... The name is now applied to all porcelain clays which endure the fire without discolouration. ... Origin: Chin. Kao-ling. .....
Found on
http://www.encyclo.co.uk/local/20973
No exact match found.