Definition of gadolinite in English:

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Pronunciation: /ˈɡad(ə)lɪnʌɪt/


[mass noun]
A rare dark brown or black mineral, consisting of a silicate of iron, beryllium, and rare earths.
Example sentences
  • It is found with other rare earth elements in minerals such as monazite, cerite, gadolinite, xenotime, and euxenite.
  • The most common ores of holmium are monazite and gadolinite.
  • Like other rare earth metals, it is found in minerals such as cerite, gadolinite, and samarskite.


Early 19th century: named after Johan Gadolin (1760–1852), the Finnish mineralogist who first identified it.

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