Porphyry Powder
Porphyry powder is ground from porphyry rock of heading 25.16 and is used in pigments. The powder is obtained by mechanical grinding and is not heat-treated or mixed, as allowed by Chapter 25 Note 1. It is classified as powder of stones of heading 25.16 under this tariff item.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the powder is a natural earth colour
Earth colours are classified under heading 25.30.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Confirm the porphyry powder is not mixed with dyes or other chemicals
• Declare the particle size and use to CBSA to support classification
• Keep documentation of the grinding process to show compliance with Note 1
Related Products under Tariff item 2517.49.00
Anorthosite Granules
Anorthosite granules are crushed from anorthosite, a rock of heading 25.16, and are used as fillers in construction and industrial applications. The granules are processed by crushing and sizing, which is permitted under Chapter 25 Note 1. They are not heat-treated or mixed, so they fall under this tariff item for granules of stones of heading 25.16.
Basalt Granules 4-8mm
Basalt granules, sized 4-8mm, are produced by crushing basalt rock of heading 25.16 and are used in railroad ballast, concrete additives, or filtration media. The crushing and sizing are mechanical processes allowed by Chapter 25 Note 1. They are not heat-treated or mixed, so they are classified as granules of stones of heading 25.16 under this tariff item.
Crushed Marble Granules
Crushed marble granules, sized 2-5mm, are derived from marble stone of heading 25.15 and are used in decorative concrete mixes and landscaping. The crushing process is a mechanical operation permitted under Chapter 25 Note 1. They are not heat-treated or mixed, so they are classified as granules of stones of heading 25.15 under this tariff item.
Diorite Granules
Diorite granules, produced by crushing diorite rock, are used as an abrasive base in industrial applications. These granules are mechanically processed by crushing and screening, without any heat treatment or chemical alteration, which aligns with the scope of Chapter 25. They are classified under tariff item 2517.49.00 as granules of stones of heading 25.15 or 25.16, not elsewhere specified.
Gneiss Granules
Gneiss granules, sized 2-4mm, are produced by crushing gneiss metamorphic rock of heading 25.16 and are used in concrete countertops or garden mulch. The crushing and sizing are mechanical processes allowed by Chapter 25 Note 1. They are not heat-treated or mixed, so they are classified as granules of stones of heading 25.16 under this tariff item.
Granite Chippings 3-6mm
Granite chippings, sized 3-6mm, are crushed from granite stone of heading 25.16 and are used for pathway surfacing, railway ballast fines, or asphalt mixes. The chippings are produced by mechanical crushing and are not heat-treated or mixed, as permitted by Chapter 25 Note 1. They are classified as chippings of stones of heading 25.16 under this tariff item.