Ceramic Grade Feldspar
High-quality feldspar graded for ceramics, with low iron content to prevent discoloration in tiles and sanitaryware. It is natural feldspar plug for sanitaryware glazes under HTS 2529.10.00.00, as it remains an unprocessed aluminosilicate mineral.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If pre-mixed into glaze batches
Feldspar incorporated into prepared glazes classifies under Chapter 69 as refractory ceramic goods.
If high quartz content exceeding 50%
Quartz-rich feldspar may shift to heading 2508 for natural quartz sands or powders.
If pebbles sized over 256mm for construction
Chapter note prioritizes heading 2517 for large pebble/boulder forms over powdered feldspar.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Request supplier certifications for iron oxide (Fe2O3) below 0.5% to match ceramic grade specs and avoid disputes
• Use ISPM-15 compliant wooden pallets for bulk shipments to prevent fumigation holds at entry
• Maintain chain-of-custody records from mine to port to prove no chemical fluxing occurred
Related Products under HTS 2529.10.00.00
Potassium Feldspar Powder
Potassium feldspar, also known as orthoclase, is a common rock-forming mineral mined and ground into powder for use as a flux in ceramic glazes and porcelain production. This product falls under HTS 2529.10.00.00 as it is natural feldspar that has been crushed and milled but remains chemically unchanged, classified specifically as feldspar in Chapter 25.
Sodium Feldspar Lumps
Sodium feldspar (albite) in lump form is extracted from pegmatite deposits and used primarily in glass manufacturing as a source of alumina and silica. Classified under HTS 2529.10.00.00 as raw feldspar, it has undergone minimal processing like crushing to lump size without chemical alteration.
Glass Grade Feldspar Powder
Feldspar finely milled to uniform particle size for soda-lime glass production, providing network formers without further refinement. Falls under HTS 2529.10.00.00 as it's crude feldspar, not chemically synthesized.
Leucite Ore Feldspar
Feldspar extracted from leucite-rich volcanic rocks, used in specialty ceramics requiring high potash flux. Classified as feldspar under HTS 2529.10.00.00 despite leucite association, as primary mineral is feldspar.
Nepheline Syenite Feldspar Blend
Blended feldspar from nepheline syenite deposits, offering low iron and high alkali for paint extenders and ceramics. HTS 2529.10.00.00 applies to the dominant feldspar component in this natural mineral product.