gadolinite

noun gad·o·lin·ite \ ˈga-də-lə-ˌnīt \

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 and Etymology of gadolinite

borrowed from French, from Johan Gadolin †1852 Finnish chemist and mineralogist + -ite 1-ite
Note: Gadolin wrote a description of the mineral based on a sample found at the Ytterby quarry on the island of Resarö in the Stockholm Archipelago, Sweden ("Undersökning av en svart tung stenart ifrån Ytterby stenbrott i Roslagen," Kongl. Vetenskaps-Akademiens Nya Handlingar, vol. 15 [1794], pp. 137-55).


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