Keisan-Bun (珪酸分)
Limestone Content
Sekkai-Bun (石灰分)
Iron Content
Tetsu-Bun (鉄分)
Alumina Content
Arumina-Bun (アルミナ分)
Red Clay
Aka Tsuchi (赤土)
White Clay
Shiro Tsuchi (白土)
Kaolin
Kaorin / Jido (カオリン / 磁土)
Ball Clay
Gairome Nendo (蛙目粘土)
Secondary Clay
Niji-Nendo (二次粘土)
Primary Clay
Ichiji-Nendo (一次粘土)