<?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">phenakite</topic></authority><related type="broader"><topic>mineral</topic></related><variant type="other"><topic>phenacite</topic></variant> <note xml:lang="en"><![CDATA[ Phenakite or phenacite is a fairly rare nesosilicate mineral consisting of beryllium orthosilicate (Be2SiO4), and occurring as colourless or white scales and prisms, and occasionally used as a gemstone in jewelry. Its name comes from Ancient Greek: phénax, meaning "deceiver" due to its close visual similarity to quartz, named by Nils Gustaf Nordenskiöld in 1833. ]]></note></mads>