Loading...
SITCSection 2
U.S. imports of feldspar; leucite, nepheline & nepheline syenite (SITC 27853) totaled $10.1M in April 2026, traded with 9 countries.
Importers of Feldspar; Leucite, Nepheline & Nepheline Syenite paid $54K in duties in April 2026 — an effective duty rate of 10% on $545K in dutiable value, based on actual customs collections rather than the published tariff schedule. Feldspar; Leucite, Nepheline & Nepheline Syenite imports of $10.1M in April 2026 ran 12% above the year-to-date monthly average of $9.0M.
Last updated: April 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.
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.
Supplier Network
Get discovered by U.S. importers searching for HS 27853 — Feldspar; Leucite, Nepheline & Nepheline Syenite. Be the first supplier listed.
Monthly import values over time