31344537clay mineralPT2026-03-30 20:32:55UF31344538clay mineralsNDUF31344539mineral, clayNDBT31320469mineralPTNT31373577chloritePTNT31375384vermiculitePTNT31375385attapulgitePTNT31373585smectitePTNT31375387sepiolitePTNT31375388kaolinitePTNT31373586mullitePT