<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31471229</termId><termName>trachyte</termName><termType>PT</termType><termNote><![CDATA[ A class of volcanic rocks, light in color and density, chiefly composed of alkali feldspar in which a small amount of quartz or oligoclase may also be present. ]]></termNote><termCreatedDate>2026-03-30 21:06:49</termCreatedDate><relation><relationType>UF</relationType><termId>31471230</termId><termName>trachytes</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31457325</termId><termName>felsite</termName><termType>PT</termType></relation></term>  </Zthes>