31344438[clay by composition or origin]PT2026-03-30 20:32:53BT31320463clayPTNT31374812ball clayPTNT31374814bancoPTNT31374815catlinitePTNT31374817kaolinPTNT31374822malmPTNT31374824marlPTNT31374827slipPTNT31319875pozzolanaPTNT31374832pipe clayPTNT31374837fuller's earthPTNT31374838terre de LorrainePTNT31374842unfired clayPTNT31374844native clayPTNT31374846gaultPTNT31374849cement-stabilized clayPTNT31374851silver clayPT