Definition of gadolinite
: a black or brown mineral that is a source of rare earths and consists of a silicate especially of iron, beryllium, yttrium, cerium, and erbium
Origin of gadolinite
German Gadolinit, from Johann Gadolin †1852 Finnish chemist
First Known Use: 1802
Learn More about gadolinite
Britannica.com: Encyclopedia article about "gadolinite"
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