Found 2 items, similar to pollucite.
English → English (WordNet) Definition: pollucite pollucite n : a rare mineral that is an important source of cesium
English → English (gcide) Definition: Pollucite Pollucite \Pol"lu*cite\, n. [See Pollux, and 4th Castor.] (Min.) A colorless transparent mineral, resembling quartz, occurring with castor or castorite on the island of Elba. It is a silicate of alumina and c[ae]sia. Called also pollux. [1913 Webster]