<?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">Egyptian blue</topic></authority><related type="other"><topic>cuprorivaite</topic></related><related type="other"><topic>Pompeian blue</topic></related><related type="other"><topic>Pozzuoli blue</topic></related><related type="broader"><topic>synthetic inorganic blue pigment</topic></related><variant type="other"><topic>bleu egiziano</topic></variant><variant type="other"><topic>bleu fritté</topic></variant><variant type="other"><topic>blue frit</topic></variant><variant type="other"><topic>blue, Egyptian</topic></variant><variant type="other"><topic>copper frit</topic></variant><variant type="other"><topic>Ägyptisch Blau</topic></variant><variant type="other"><topic>Ägyptischblau</topic></variant><variant type="other"><topic>Alexandria blue</topic></variant><variant type="other"><topic>Alexandrian blue</topic></variant><variant type="other"><topic>Frittenblau</topic></variant><variant type="other"><topic>Italian blue</topic></variant><variant type="other"><topic>Venetian blue</topic></variant><variant type="other"><topic>Vestorian blue</topic></variant><variant type="other"><topic>bleu Egyptian</topic></variant><variant type="other"><topic>bleu d&apos;Egypte</topic></variant><variant type="other"><topic>bleu d&apos;alexandrie</topic></variant><variant type="other"><topic>bleu de Pouzzoles</topic></variant> <note xml:lang="en"><![CDATA[ A synthetic inorganic colorfast pigment having coarse, irregular particles and ranging in color from a powdery blue to a royal blue. It is composed of a double silicate of calcium and copper, prepared by heating a mixture of silica, copper salts, and calcite in a sodium carbonate flux, forming a stable blue frit. Egyptian blue is stable in all types of media and is unaffected by acids or alkali. It was used by the ancient Egyptians over 5000 years ago as a pottery glaze and watercolor pigment in wall paintings. Similar materials, later manufactured in Italy and called Pompeian blue and Pozzuoli blue, have similar chemical compositions and optical properties. ]]></note></mads>