ytterbite
(noun)
noun
1. a mineral that is a source of rare earths; consists of silicates of iron and beryllium and cerium and yttrium and erbium
Similar word(s): gadolinite
(noun)
1. a mineral that is a source of rare earths; consists of silicates of iron and beryllium and cerium and yttrium and erbium
Similar word(s): gadolinite