U.S. imports of Feldspar; Leucite, Nepheline & Nepheline Syenite (SITC 27853) totaled $8.8M in August 2026, imported from 10 countries.
Importers of Feldspar; Leucite, Nepheline & Nepheline Syenite paid $62K in duties in August 2026, an average duty rate of 0.71% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule.
Last updated: August 2026 dataFeldspar and its alumino-silicate relatives — leucite, nepheline, and nepheline syenite — function as fluxing agents that lower firing temperatures in ceramic bodies, glass batches, and sanitaryware glazes. Nepheline syenite is commercially favored as a lower-iron alternative to conventional feldspar in glass and tile applications where color clarity matters. Importers should verify mineralogical composition certificates, as the boundary between feldspar grades and nepheline syenite affects both classification and downstream processing specifications.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
1.1K import shipments a month
Nepheline syenite has a lower iron content and a different alumina-to-silica ratio than most feldspars, which reduces discoloration in glass and white ceramic bodies. It also melts at a lower temperature, offering energy savings during kiln firing.
A mineralogical analysis certificate or X-ray diffraction report identifying the dominant mineral phase is the most reliable supporting document. Customs may request this to distinguish nepheline syenite (a nepheline-dominant rock) from feldspar-dominant materials, as the two can appear similar in bulk form.
Basic heading 65 of 239 in section 2
Basic heading 27853 · $8.8M of $3.8B
Trade Directory
List your company and tag the 6-digit products you trade, so the companies trading them can find you. Be the first supplier listed.
Imports · August 2026
origin
Canada and Turkey together supply 98% of it. Turkey pays 12.5% duty; Mexico 0.0%.
customs district
Census does not publish district detail for this classification system.
destination
Census does not publish state detail for this classification system.
entry
Census does not publish port detail for this classification system.
ImportsExports
Imports
$8.8MYoY · free account
Exports
$330KYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $106.2M of Feldspar; Leucite, Nepheline & Nepheline Syenite and exported $4.7M.
Through August 2026. Source: U.S. Census Bureau.