Leucite; nepheline and nepheline syenite
Natural sands of all kinds, whether or not coloured, other than metal-bearing sands of Chapter 26. > Leucite; nepheline and nepheline syenite > Leucite; nepheline and nepheline syenite
Duty Rate (from China)
Products classified under Tariff item 2529.30
AF Sodalite Nepheline Syenite
AF-grade nepheline syenite containing sodalite inclusions, used in low-expansion glass-ceramics. This natural mineral product is distinguished by inclusion analysis and falls under this tariff item as a natural form of nepheline syenite, consistent with Chapter 25 notes.
2529.30.00Canadian Blue Earth Nepheline Syenite
Blue Earth deposit nepheline syenite from Ontario, known for consistent alumina content in ceramics. This pure mineral import is in a crude or physically processed state, consistent with Chapter 25 notes, and falls under this tariff item as natural nepheline syenite.
2529.30.00Feldspar-Nepheline Syenite Blend
A natural blend of nepheline syenite and feldspar, with a dominant nepheline syenite content (30-70% nepheline), used in sanitaryware and electrical porcelain production. The product is in a crude or physically processed state, consistent with Chapter 25 notes, and is classified under this tariff item due to its primary nepheline syenite characteristics.
2529.30.00Fine Ground Nepheline Syenite 10 Micron
Fine ground nepheline syenite with a 10 micron D50, used for high-end coatings and adhesives. The ultra-fine grind is a physical process allowed under Chapter 25 notes, and the product retains its natural mineral status, falling under this tariff item.
2529.30.00Ground Nepheline Syenite Powder
Finely ground nepheline syenite powder derived from igneous rock deposits, primarily composed of nepheline, albite, and microcline feldspar. The product is ground, a physical process allowed under Chapter 25 notes, and falls under this tariff item as a natural mineral.
2529.30.00K1-K Feldspar Nepheline Syenite
Premium K-feldspar rich nepheline syenite from Canadian deposits, ground to 325 mesh for glass manufacturing. The product is ground, a physical process allowed under Chapter 25 notes, and falls under this tariff item as a natural leucite-nepheline rock.
2529.30.00Leucite Crystals for Research
Hand-selected leucite crystals from volcanic deposits, used in geological research and as reference standards in mineralogy labs. These unworked natural leucite specimens, each weighing under 2.5 g, fall under this tariff item as crude leucite, consistent with Chapter 25 notes.
2529.30.00Leucite Ore Concentrate
Concentrated leucite ore extracted from volcanic deposits, used in specialty ceramics and as a potassium source in fertilizers. The product is concentrated by physical processes such as flotation or magnetic separation, which are permitted under Chapter 25 notes, and remains classified as leucite under this tariff item.
2529.30.00Leucite Sand Substitute
Screened leucite particles (0.1-2mm) used as a foundry sand substitute in metal casting molds due to high thermal stability. The product is sized by screening, a physical process allowed under Chapter 25 notes, and is classified as leucite under this tariff item.
2529.30.00Micronized Nepheline Syenite Filler
Ultra-fine (<10 micron) nepheline syenite powder used as a functional filler in paints, coatings, and plastics. The product is ground, a physical process permitted under Chapter 25 notes, and retains its natural mineral status, falling under this tariff item as nepheline syenite.
2529.30.00Nepheline Syenite Ceramic Filler
Coarse-ground nepheline syenite specifically graded for ceramic tile and sanitaryware production, providing fluxing properties and whiteness. The product is ground, a physical process allowed under Chapter 25 notes, and falls under this tariff item as unprocessed nepheline syenite.
2529.30.00Nepheline Syenite Ceramic Flux
Pre-crushed nepheline syenite (100-325 mesh) formulated for tile body and glaze fluxing in ceramic manufacturing. The product is crushed and screened, physical processes allowed under Chapter 25 notes, and is classified under this tariff item as a natural mineral before any formulation mixing.
2529.30.00Nepheline Syenite for Glass Batch
Coarse-ground nepheline syenite specifically graded for container glass and flat glass production as a primary source of alkalis and alumina. The product is ground, a physical process allowed under Chapter 25 notes, and is classified under this tariff item as a natural mineral flux.
2529.30.00Nepheline Syenite Lumps
Coarse lumps of nepheline syenite rock, typically 2-10 cm, mined for crushing into flux material for porcelain and tile production. The product is in a crude, unworked state, consistent with Chapter 25 notes, and falls under this tariff item as natural nepheline syenite.
2529.30.00Nepheline Syenite Powder
Finely ground nepheline syenite used primarily as a fluxing agent in ceramic and glass manufacturing to lower melting temperatures. This natural aluminosilicate mineral is ground, a physical process allowed under Chapter 25 notes, and falls under this tariff item as unprocessed nepheline syenite.