Word Study
Gadolinite
CIDE DICTIONARY
Gadolinite, n. [Named after Gadolin , a Russian chemist.].
A mineral of a nearly black color and vitreous luster, and consisting principally of the silicates of yttrium, cerium, and iron. [1913 Webster]
OXFORD DICTIONARY
Gadolinite, n. a dark crystalline mineral consisting of ferrous silicate of beryllium.
Etymology
J. Gadolin, Finnish mineralogist d. 1852
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