<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31437490</termId><termName>chrysocolla</termName><termType>PT</termType><termNote><![CDATA[ A bluish green pigment derived from chrysocolla mineral, often containing free silica and other impurities. The translucent to opaque stone is typically sky-blue in color in its natural state, but appears green when ground into a fine powder. In the 16th and 17th centuries, it was used as a watercolor pigment called cedar green. It is stable to light but is decomposed by acids, alkalis, and heat.  ]]></termNote><termCreatedDate>2026-03-30 20:57:57</termCreatedDate><relation><relationType>UF</relationType><termId>31437491</termId><termName>cedar green</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31411044</termId><termName>inorganic green pigment</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>31344576</termId><termName>chrysocolla</termName><termType>PT</termType></relation></term>  </Zthes>