<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31478165</termId><termName>marekanite</termName><termType>PT</termType><termNote><![CDATA[ Semitransparent, smoky-colored obsidian nodules of Arizona ore; used in Indian silver jewelry. ]]></termNote><termCreatedDate>2026-03-30 21:08:45</termCreatedDate><relation><relationType>BT</relationType><termId>31471218</termId><termName>obsidian</termName><termType>PT</termType></relation></term>  </Zthes>