<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31344657</termId><termName>calcium silicate</termName><termType>PT</termType><termNote><![CDATA[ Any silicate of calcium as occurs crystallized in diopside and other minerals. Hydrated calcium silicate with inorganic fiber reinforcement is commonly molded into a high temperature insulation material, a safe alternative to asbestos. Calcium silicates are also used in the manufacture of materials such as glass, porcelain, and cement, and as fillers for plastics and paper.  ]]></termNote><termCreatedDate>2026-03-30 20:32:57</termCreatedDate><relation><relationType>UF</relationType><termId>31344658</termId><termName>calcium silicates</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31344659</termId><termName>silicate, calcium</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31320469</termId><termName>mineral</termName><termType>PT</termType></relation></term>  </Zthes>