Leucite; nepheline and nepheline syenite
Feldspar; leucite; nepheline and nepheline syenite; fluorspar. > Leucite; nepheline and nepheline syenite > Leucite; nepheline and nepheline syenite
Duty Rate (from China)
Products classified under Tariff item 2529.30.00
AF Sodalite Nepheline Syenite
AF-grade nepheline syenite containing sodalite inclusions, used in low-expansion glass-ceramics. This natural mineral product is classified under tariff item 2529.30.00 as it is distinguished by inclusion analysis but remains a natural, unprocessed mineral, with only physical processing permitted.
Beneficiated Nepheline Concentrate
Flotation beneficiated nepheline concentrate with over 95% purity and low iron content, used for premium glass and ceramics. The product undergoes physical separation (flotation) without chemical change, which is permitted under Chapter 25 Note 1, classifying it under tariff item 2529.30.00.
Canadian Blue Earth Nepheline Syenite
Blue Earth deposit nepheline syenite from Ontario, known for consistent alumina content in ceramics. This pure mineral import is classified under tariff item 2529.30.00 as it is a natural mineral product with country-specific recognition, and is in the crude or physically processed state.
Feldspar-Nepheline Syenite Blend
A natural blend of nepheline syenite and feldspar, with a dominant nepheline syenite content (30-70%), used in sanitaryware and electrical porcelain production. This product falls under tariff item 2529.30.00 as it is a natural mineral mixture primarily composed of nepheline syenite, not subjected to processing beyond crushing, grinding, or physical separation.
Fine Ground Nepheline Syenite 10 Micron
10 micron D50 nepheline syenite for high-end coatings and adhesives. This ultra-fine grind retains natural mineral status under tariff item 2529.30.00 as it is processed only by physical grinding, which is permitted under Chapter 25 notes, and is not chemically altered.
Ground Nepheline Syenite Filler
Micronized nepheline syenite graded for paint and coating applications as an extender pigment. The product is ground to fine particle sizes without chemical treatment, fitting the mechanical processing allowance of Chapter 25 Note 1 for tariff item 2529.30.00.
Ground Nepheline Syenite Powder
Finely ground nepheline syenite powder derived from igneous rock deposits, primarily composed of nepheline, albite, and microcline feldspar. This product is classified under tariff item 2529.30.00 as it is a natural mineral processed only by grinding, and is used as a functional filler.
K1-K Feldspar Nepheline Syenite
Premium K-feldspar rich nepheline syenite from Canadian deposits, ground to 325 mesh for glass manufacturing. This product is classified under tariff item 2529.30.00 as it is a natural leucite-nepheline rock, with only physical grinding applied, and is not chemically altered.
Leucite Ceramic Raw Material
Natural leucite crystals separated for specialty glass-ceramics, such as cooktop panels and dental porcelains. The product is beneficiated by physical means and retains its crystalline structure, qualifying under tariff item 2529.30.00 as a mechanically processed mineral.
Leucite 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 fall under tariff item 2529.30.00 as they are in the crude state, not subjected to any processing beyond selection, and are not excluded by Chapter 25 notes.
Leucite Dental Ceramic Precursor
High-purity leucite powder (99%+) for pressable dental ceramics, providing opalescent effects and fracture toughness. The product is a natural mineral that is ground and purified physically, without chemical alteration, fitting tariff item 2529.30.00.
Leucite Flux for Sanitary Ware
Leucite-rich fraction selected for vitreous china sanitary ware, improving strength and whiteness. The product is prepared by physical selection and grinding, without chemical processing, classifying it under tariff item 2529.30.00.
Leucite Ore Concentrate
Concentrated leucite ore extracted from volcanic deposits, used in specialty ceramics and as a potassium source in fertilizers. This product is classified under tariff item 2529.30.00 as it is a crude or beneficiated leucite, processed only by physical methods such as flotation or magnetic separation, which are permitted under Chapter 25 notes.
Leucite Sand Substitute
Screened leucite particles (0.1-2mm) used as foundry sand substitute in metal casting molds due to high thermal stability. This product is classified under tariff item 2529.30.00 as it is sized but unworked leucite for industrial application, processed only by screening, which is a permitted mechanical process under Chapter 25 notes.
Micronized Nepheline Syenite
Ultra-fine micronized nepheline syenite (D97=10 micron) for injection molding compounds and engineered plastics. The product is physically ground to a fine powder without chemical treatment, meeting the mechanical processing criteria of Chapter 25 Note 1 for tariff item 2529.30.00.
Micronized Nepheline Syenite Filler
Ultra-fine (<10 micron) nepheline syenite powder used as functional filler in paints, coatings, and plastics for matting and reinforcement. This product is classified under tariff item 2529.30.00 as it is physically processed (ground) but chemically unaltered, and the addition of anti-dusting agents is permitted if it does not render the product for specific use.
Milled Leucite for Porcelain
Ultra-fine milled leucite (D50<10 micron) for high-strength dental porcelain and technical ceramics. The product is physically milled without altering its mineralogy, qualifying under tariff item 2529.30.00 as a mechanically processed natural mineral.
Nepheline Syenite Ceramic Filler
Coarse-ground nepheline syenite specifically graded for ceramic tile and sanitaryware production, providing fluxing properties and whiteness. This product falls under tariff item 2529.30.00 as unprocessed nepheline syenite, with only physical grinding applied, and is distinct from formulated ceramic bodies.
Nepheline Syenite Ceramic Flux
Pre-crushed nepheline syenite (100-325 mesh) formulated for tile body and glaze fluxing in ceramic manufacturing. This essential raw material is classified under tariff item 2529.30.00 as it is covered before formulation mixing, and the crushing process is permitted under Chapter 25 notes.
Nepheline Syenite Extender for Plastics
Plastics-grade nepheline syenite with low oil absorption, used as a filler in polypropylene compounds. This natural mineral is ground and classified without further compounding, meeting the mechanical processing requirement of Chapter 25 Note 1 for tariff item 2529.30.00.
Nepheline Syenite for Fiberglass
Low-boron nepheline syenite for E-glass fiberglass production, providing a stable alumina-silica ratio. The product is selected and ground physically, with boron content below 50ppm, and classified under tariff item 2529.30.00 as a natural mineral.
Nepheline 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. This industrial mineral flux is classified under tariff item 2529.30.00 as it is covered before batch mixing, and the grinding process is permitted under Chapter 25 notes.
Nepheline Syenite for Paint Extender
Micronized nepheline syenite used as a titanium dioxide extender in architectural paints, providing dispersibility and opacity. The product is ground to a fine powder without chemical modification, fitting the scope of mechanically processed minerals under tariff item 2529.30.00.
Nepheline Syenite Glass Batch Additive
Granulated nepheline syenite for container and flat glass production, replacing soda ash and feldspar. The product is prepared in granular form (0.5-3mm) by physical granulation without chemical change, fitting tariff item 2529.30.00.
Nepheline Syenite Glass Grade 200 Mesh
Nepheline syenite in 200 mesh powder form, used as a flux in container glass production to lower melting temperatures. This natural mineral is crushed and ground but not chemically altered, qualifying under tariff item 2529.30.00 for crude or mechanically processed mineral products.
Nepheline Syenite Lumps
Coarse lumps of nepheline syenite rock, typically 2-10 cm, mined for crushing into flux material for porcelain and tile production. This product falls under tariff item 2529.30.00 as unworked nepheline syenite, suitable for direct industrial processing, and is in the crude state as permitted by Chapter 25 notes.
Nepheline Syenite Paint Extender
Delaminated nepheline syenite platelets for matte architectural paints and plasters, improving hiding power. The product is physically delaminated to create a platy structure, without chemical alteration, classifying it under tariff item 2529.30.00.
Nepheline Syenite Plaster Filler
Coarse nepheline syenite (D50=25µm) for gypsum plasters and joint compounds, improving sandability. The product is ground to a coarse powder without chemical treatment, meeting the mechanical processing criteria of Chapter 25 Note 1 for tariff item 2529.30.00.
Nepheline 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 falls under tariff item 2529.30.00 as unprocessed nepheline syenite, with only physical grinding applied, which is permitted under Chapter 25 notes.
Unmilled Nepheline Syenite Lumps
Natural nepheline syenite in lump form (2-6 inches), crushed but not finely ground, intended for further grinding at destination. The product is in a crude or crushed state, explicitly covered by Chapter 25 Note 1, and classified under tariff item 2529.30.00.