<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31410804</termId><termName>montmorillonite</termName><termType>PT</termType><termNote><![CDATA[ A dioctohedral clay mineral of the smectite group. ]]></termNote><termCreatedDate>2026-03-30 20:50:27</termCreatedDate><relation><relationType>BT</relationType><termId>31373585</termId><termName>smectite</termName><termType>PT</termType></relation></term>  </Zthes>