<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31344630</termId><termName>phosgenite</termName><termType>PT</termType><termNote><![CDATA[ Rare mineral that occurs as pale yellow crystals. Phosgenite is formed in the oxidation zone of lead ore deposits. Phosgenite has been identified as a constituent in ancient Egyptian cosmetic powders; it appears to have been synthetically produced using “wet” chemistry. ]]></termNote><termCreatedDate>2026-03-30 20:32:57</termCreatedDate><relation><relationType>BT</relationType><termId>31320469</termId><termName>mineral</termName><termType>PT</termType></relation></term>  </Zthes>