U.S. imports of Leucite; Nepheline and Nepheline Syenite (HS 252930) totaled $8.1M in August 2026, imported from 3 countries.
Importers of Leucite; Nepheline and Nepheline Syenite paid $2K in duties in August 2026, an average duty rate of 0.03% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule.
Last updated: August 2026 dataNepheline syenite — a feldspar-free aluminosilicate rock prized for its low melting point and high alumina content — is the commercially dominant product in this heading and a key raw material for glass, ceramics, and coatings. Canada is overwhelmingly the primary supplier to the US, with Norway the only other significant source, reflecting the geographic concentration of economically viable nepheline syenite deposits. The US schedule further subdivides the heading into nepheline syenite (2529300010) and leucite/nepheline excluding nepheline syenite (2529300050), so importers must confirm the specific mineral form to select the correct 10-digit line.
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 melts at a lower temperature than most feldspars and contains no free silica (quartz), which reduces energy consumption in glass melting and lowers occupational silicosis risk during processing. Its high combined alumina and alkali content also improves chemical durability and surface hardness in ceramic glazes, making it a functional upgrade in formulations where those properties matter.
Nepheline syenite is a specific igneous rock composed primarily of nepheline and alkali feldspar; it is distinct from pure nepheline mineral or leucite. Classification hinges on the mineralogical composition of the material as shipped. A petrographic or XRD analysis report from the supplier, combined with the commercial product name used in the trade, is the most reliable basis for selecting the correct 10-digit line. When in doubt, consult a licensed customs broker before entry.
Subheading 2 of 4 in heading 2529
Subheading 252930 · $8.1M of $26.6M
ImportsExports
Imports
$8.1MYoY · free account
Exports
$201KYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $101.1M of Leucite; Nepheline and Nepheline Syenite and exported $3.4M.
Through August 2026. Source: U.S. Census Bureau.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 2529300010 | Nepheline Syenite | $8.1M | 0.01% | 0.14% | $1K |
| 2529300050 | Leucite; Nepheline Excpt Nepheline Syenite | $27K | 3.22% | 8.57% | $872 |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2529300000 | Leucite; Nepheline and Nepheline Syenite | $201K |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
Trade Directory
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Imports · August 2026
origin
Canada and Brazil together supply 100% of it. Brazil pays 37.5% duty; Canada <0.1%.
customs district
entry
rate provision · imports
99.8% enters free of duty; duty collected equals 0.03% of imports for consumption.