Encyclopedia > Gadolinite

Article Content

Gadolinite

Gadolinite is a mineral of a nearly black color and vitreous luster, and consisting principally of the silicates of erbium, yttrium, cerium, beryllium and iron. It is a source of rare earth metals.

All Wikipedia text is available under the terms of the GNU Free Documentation License

Search Encyclopedia

Search over one million articles, find something about almost anything!

Featured Article

North Haven, New York

... 18 to 24, 22.3% from 25 to 44, 28.7% from 45 to 64, and 28.1% who are 65 years of age or older. The median age is 50 years. For every 100 females there are 86.7 males. ...