<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31375384</termId><termName>vermiculite</termName><termType>PT</termType><termNote><![CDATA[ A group of micaceous clay minerals closely related to chlorite and montmorillonite; vermiculite is derived from the alteration of biotite and phlogopite in the zone of weathering. ]]></termNote><termCreatedDate>2026-03-30 20:41:14</termCreatedDate><relation><relationType>BT</relationType><termId>31344537</termId><termName>clay mineral</termName><termType>PT</termType></relation></term>  </Zthes>