levyne

Century Dictionary and Cyclopedia

1. n. A mineral found in Ireland, the Faroe Islands, and some other places. It belongs to the zeolite group, and is a hydrated silicate of calcium and aluminium. It is related to chabazite.

Wiktionary

1. n. mineralogy A hydrated silicate mineral found in sodium- and calcium-dominated forms.

GNU Webster's 1913

1. n. (Min.) A whitish, reddish, or yellowish, transparent or translucent mineral, allied to chabazite.