Unexpanded Perlite Rock
Crude perlite ore in loose rock or granular form, unheated and unexpanded, directly from volcanic deposits. Falls under HTS 2530.10.00.00 as unexpanded perlite, a lightweight siliceous mineral used in filtration, insulation, and horticulture after expansion.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
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
• Include assay reports showing amorphous silica content >70% to confirm perlite classification
• Declare as unexpanded to avoid duties on expanded forms; inspect shipments for accidental pre-heating
• Comply with EPA regulations if trace asbestos is present in natural deposits
Related Products under HTS 2530.10.00.00
Raw Vermiculite Ore
Natural vermiculite ore extracted from deposits, unexpanded and in its crude form as loose flakes or granules. Classified under HTS 2530.10.00.00 as unexpanded vermiculite, a mineral substance not elsewhere specified, suitable for further processing into insulation or horticultural products.
Chlorite Mineral Flakes
Loose chlorite mineral in flake or schist form, unprocessed and unexpanded, sourced from metamorphic rock deposits. HTS 2530.10.00.00 covers unexpanded chlorites as other mineral substances, often used in ceramics, fillers, or drilling fluids.
Horticultural Vermiculite Flakes
Screened unexpanded vermiculite flakes sized for potting mixes, remaining in crude mineral state without heat treatment. Classified in HTS 2530.10.00.00 as unexpanded vermiculite intended for expansion in soil aeration applications.
Industrial Perlite Granules
Coarse unexpanded perlite granules for industrial expansion into abrasives or filters, unheated from natural ore. HTS 2530.10.00.00 applies to this unexpanded form as a specified mineral substance.
Crude Chlorite Powder
Lightly crushed chlorite mineral powder, uncalcined and unexpanded, for use in paints or plastics. Remains under HTS 2530.10.00.00 as unexpanded chlorites not further processed.