Imports In 2012, Montenegro imported $357 in Leucite, nepheline and nepheline syenite, becoming the 0th largest importer of Leucite, nepheline and nepheline syenite in the world. At the same year, Leucite, nepheline and nepheline syenite was the 0th most imported product in Montenegro. Montenegro imports Leucite, nepheline and nepheline syenite primarily from: N/A.