scapolite

noun

1. any of a group of minerals of variable composition, essentially silicates of aluminum, calcium, and sodium, occurring as massive aggregates or tetragonal crystals.
2. the member of the scapolite group intermediate in composition between meionite and marialite; wernerite.

noun

1. any of a group of colourless, white, grey, or violet fluorescent minerals consisting of sodium or calcium aluminium silicate, carbonate, and chloride in tetragonal crystalline form. They occur mainly in impure limestones and pegmatitesAlso called: wernerite