<?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">mullite</topic></authority><related type="broader"><topic>clay mineral</topic></related><related type="broader"><topic>silicates</topic></related><variant type="other"><topic>porcelainite</topic></variant> <note xml:lang="en"><![CDATA[ Mineral originally found on the Isle of Mull and used as refractory material for firebrick and furnace linings. It occurs naturally as fused argillaceous sediment inclusions in the mineral buchite, but this is rare, and as a result, it is produced artificially. ]]></note></mads>