Late carbonate veins and replacements cut intrusive rocks and scapolite is a common alteration mineral in volcanic rocks.
British Dictionary definitions for scapolite
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
C19: from German Skapolith, from Greek skapos rod + -lite