<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31375327</termId><termName>plagioclase</termName><termType>PT</termType><termNote><![CDATA[ A group of triclinic feldspar distinguished from alkali feldspars which are sodium- or potassium-rich. ]]></termNote><termCreatedDate>2026-03-30 20:41:13</termCreatedDate><relation><relationType>UF</relationType><termId>31375328</termId><termName>feldspar, plagioclase</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31375329</termId><termName>plagioclase feldspar</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31344467</termId><termName>feldspar</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31412200</termId><termName>albite</termName><termType>PT</termType></relation></term>  </Zthes>