Clay Varieties


 * acid
 * astringent
 * ball
 * bleaching
 * blue
 * blue mud
 * bond
 * brick
 * ceramic
 * china
 * deep-sea
 * fire or fire-brick
 * flint
 * glacial
 * Japanese acid
 * kaolin
 * loam
 * mudstone
 * pipe
 * porcelain
 * pot
 * potters
 * red
 * refractory
 * shale
 * silty
 * stoneware