<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31344469</termId><termName>fluorite</termName><termType>PT</termType><termNote><![CDATA[ Multi-colored transparent or translucent material containing calcium fluoride, commonly occurring in massive crystalline cube form with perfect octahedral cleavage, used as flux, as a source of fluoride compound, and in the preparation of opalescent and opaque glass, vitreous enamel, and a purple pigment. ]]></termNote><termCreatedDate>2026-03-30 20:32:54</termCreatedDate><relation><relationType>UF</relationType><termId>31344470</termId><termName>fluorspar</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31320469</termId><termName>mineral</termName><termType>PT</termType></relation></term>  </Zthes>