High-Purity Quartz Chunks
Selected quartz chunks with over 99.9% SiO2 purity, minimally processed for electronics industry feedstock. HTS 2506.10.00 covers this as unworked quartz other than sands. Essential raw material for semiconductor-grade silicon.
Import Duty Rates by Country of Origin
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If chemically purified to silicon dioxide powder
Purified silica separates from natural quartz in 2811
If prepared for semiconductor production
Chemically prepared chemical products shift to 3824
If unworked but gem-quality
Precious stones like quartz gems go to Chapter 71
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Import Tips & Compliance
• Include purity lab certificates; declare exact SiO2 content to justify classification
• Pitfall: contamination claims can trigger 2508 if deemed mineral mixtures
Related Products under HTS 2506.10.00
Rough Quartz Crystals
Natural quartz crystals mined from deposits, typically in irregular shapes without further processing beyond extraction. Classified under HTS 2506.10.00 as quartz other than natural sands, distinct from processed or crushed forms. Used primarily for industrial grinding into powders or as raw material for silicon production.
Quartzite Slab Blocks
Quartzite rock roughly sawn into rectangular slabs or blocks for further processing. Falls under HTS 2506.10.00 as quartzite merely cut by sawing, not further worked into finished dimensions. Commonly used in construction for crushing into aggregate.
Sawn Quartzite Blocks
Quartzite blocks cut by sawing into rectangular shapes, suitable for monumental or architectural use. Classified in 2506.10.00 as merely cut, not further dressed or polished. Used in stone fabrication industries.
Natural Quartz Pebbles
Rounded quartz pebbles collected from riverbeds, not artificially crushed, used in decorative landscaping. HTS 2506.10.00 applies as quartz other than sands, provided not sized as gravel. Excludes processed aggregates.
Quartz Ore Lumps
Lumpy quartz ore from mining operations, containing high silica for glassmaking feedstock. Falls under 2506.10.00 as unprocessed quartz excluding sands. Primary input for float glass production.
Rectangular Quartzite Slabs
Quartzite cut into rectangular slabs by simple sawing, for subsequent crushing or slab processing. HTS 2506.10.00 specifically includes such merely cut forms. Used in countertops after further fabrication.