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 pegmatites
Also called: wernerite
Word origin
C19: from German Skapolith, from Greek skapos rod + -lite
scapolite in American English
(ˈskæpəˌlaɪt)
noun
any of a group of tetragonal minerals composed chiefly of silicates of aluminum,calcium, and sodium