<?xml version="1.0" encoding="utf-8"?><mads xmlns="http://www.loc.gov/mads/" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/mads/
mads.xsd"><authority><topic authority="http://AATesaurus.cultura.gencat.cat/aat/getty_en">opaque red glass</topic></authority><related type="narrower"><topic>haematinum</topic></related><related type="broader"><topic>glass by composition or origin</topic></related><variant type="other"><topic>glass, opaque red</topic></variant><variant type="other"><topic>opaque glass, red</topic></variant><variant type="other"><topic>red opaque glass</topic></variant> <note xml:lang="en"><![CDATA[ An opaque glass whose red color is generally caused by cuprous oxide crystals. ]]></note></mads>