<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31344613</termId><termName>dawsonite</termName><termType>PT</termType><termNote><![CDATA[ A carbonate of sodium and aluminum found as a low-temperature hydrothermal mineral in shale. It crystallizes in the orthorhombic crystal system. It is not mined for ore.   ]]></termNote><termCreatedDate>2026-03-30 20:32:56</termCreatedDate><relation><relationType>BT</relationType><termId>31320469</termId><termName>mineral</termName><termType>PT</termType></relation></term>  </Zthes>