<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31344476</termId><termName>gypsum</termName><termType>PT</termType><termNote><![CDATA[ Naturally occurring soft white mineral that is commonly used as a retarding agent in portland cement, as a core in sheets of wallboard, as a white pigment, in grounds for paintings, and is the main component of alabaster. ]]></termNote><termCreatedDate>2026-03-30 20:32:54</termCreatedDate><relation><relationType>UF</relationType><termId>31344477</termId><termName>calcium sulfate dihydrate</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31344478</termId><termName>mineral white</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31344479</termId><termName>terra alba</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31320469</termId><termName>mineral</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31375337</termId><termName>alabaster</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31375338</termId><termName>selenite</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>31344617</termId><termName>anhydrite</termName><termType>PT</termType></relation></term>  </Zthes>