<?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">geopolymers</topic></authority><related type="broader"><topic>polymers</topic></related><variant type="other"><topic>geopolymer</topic></variant> <note xml:lang="en"><![CDATA[ Any of a class of synthetic aluminosilicate materials, chains or networks of mineral molecules linked with covalent bonds, used in concrete-polymer composites as an alternative to Portland cement; in resins and binders; and as a decorative cast stone-like material. ]]></note></mads>