<?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">strontium</topic></authority><related type="broader"><topic>strontium, strontium isotopes, compounds, alloys</topic></related><related type="broader"><topic>elements</topic></related><variant type="other"><topic>Sr</topic></variant> <note xml:lang="en"><![CDATA[ Strontium (symbol: Sr) is a soft silver-white metallic element that turns yellow when exposed to air. Strontium is used commercially in luminous paint, fireworks and television tubes, and the compound strontium-oxide serves as a non-toxic replacement for lead in ceramic glazes. Paleontologists study strontium levels in human and animal bone for information about ancient diet. ]]></note></mads>