Topic: monazite

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monazite

The Columbia Encyclopedia, Sixth Edition
monazite , yellow to reddish-brown natural phosphate of the rare earths , mainly the cerium and lanthanum metals, usually with some thorium . Yttrium, calcium, iron, and silica are frequently present. Monazite sand is the crude natural material and is usually purified from other minerals before entering commerce. Monazite occurs in North Carolina, South Carolina, Idaho, Colorado, Montana, and Florida in the United States, and in Brazil, India, Australia, and South Africa. It is an important source of cerium, thorium, and other rare-earth metals and compounds. Author not... Read more
europium
World Encyclopedia europium (symbol Eu) Silvery-white metallic element of the lanthanide series . Its chief ores are monazite and bastnaesite. The metal is used in the manufacture of colour television screens, lasers, and in control rods in nuclear reactors ... Read more
gadolinium
World Encyclopedia gadolinium (symbol Gd) Silvery white metallic element of the lanthanide series . Chief ores are gadolinite, monazite and bastnaesite. Its uses include neutron absorption and the manufacture of certain alloys. Properties: at.no. 64; r.a.m. 157.25 ... Read more

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