<?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">bismuth oxide</topic></authority><related type="broader"><topic>inorganic yellow pigment</topic></related><variant type="other"><topic>bismuth trioxide</topic></variant><variant type="other"><topic>bismuth yellow</topic></variant><variant type="other"><topic>oxide, bismuth</topic></variant><variant type="other"><topic>trioxide, bismuth</topic></variant> <note xml:lang="en"><![CDATA[ A manufactured compound of bismuth that occurs naturally as the mineral bismite. It is a heavy yellow powder, insoluble in water and soluble in acids, used as a pigment for enamels and ceramics. Also used in reflectance/transmittance testing as a colorant that permits "tagging" of a fill or coating in order to evaluate its effectiveness. ]]></note></mads>