Switzerland Imports from United States of Feldspar, Leucite, Nepheline, Nepheline Syenite, Fluorspar was US$21 during 2021, according to the United Nations COMTRADE database on international trade. Switzerland Imports from United States of Feldspar, Leucite, Nepheline, Nepheline Syenite, Fluorspar - data, historical chart and statistics - was last updated on May of 2024.