Mining Dore Bullion from Polymetallic Ores
Unwrought dore bullion extracted from polymetallic sulfide ores via cyanidation, containing approximately 75% silver, 20% gold, and trace metals in cast bar form. This silver-dominant dore is intended for refining and qualifies as unwrought silver under tariff item 7106.91.00, provided silver predominates by weight.
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 |
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 the gold content exceeds 2% by weight and gold outweighs silver
Chapter note 5 classifies alloys by the predominant precious metal.
If the dore has been further processed into sheets, wire, or other semi-manufactured forms
Semi-manufactured silver is classified separately from unwrought forms.
If the dore is ground into powder meeting the 0.5 mm sieve specification
Powder forms of silver are classified under a distinct subheading.
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
• Obtain a certified assay from an accredited laboratory to confirm the silver content and demonstrate that silver predominates over gold and other metals
• The CBSA may require a commercial invoice and packing list detailing the dore's weight and value; ensure these are consistent with the assay
• If the gold content approaches 20%, consult a customs broker to confirm whether the product might be better classified as gold dore under heading 7108
Related Products under Tariff item 7106.91.00
1 KG Silver Bullion Ingot
A 1 kilogram cast ingot of unwrought silver bullion, stamped with refinery mark and purity assay. This falls under tariff item 7106.91.00 as unwrought silver bullion intended for investment or monetary use.
999 Fine Silver Bullion Bar
A rectangular bar of unwrought silver with 99.9% purity, weighing approximately 1 kg, used for investment purposes. This fine silver bullion bar is in a form not further worked and is classifiable as unwrought silver under tariff item 7106.91.00.
999 Fine Silver Dore Bars
Unrefined silver dore bars assaying 999 fineness from mining operations, containing minimal impurities. These are unwrought silver in their primary form, prior to electrolytic refining, and fall under tariff item 7106.91.00 as unwrought silver.
Anode Silver Bar for Electroplating
Cast rectangular silver anodes with 99.5%+ purity, used in electroplating baths to deposit silver layers on base metals. These anodes are in unwrought form, distinct from semi-manufactured shapes, and are classifiable as unwrought silver under tariff item 7106.91.00.
Bolivian Potosi Silver Dore
Traditional dore from Potosi mines, high-grade silver (85% Ag) with doré characteristics from amalgamation. This is unwrought silver bullion under tariff item 7106.91.00, a historic import source for refineries.
Dentistry Silver Alloy Ingot
Unwrought ingot of silver alloy containing 70% silver with copper as the balance, intended for dental casting alloys. Per chapter note 5(c), since silver predominates by weight, this alloy is treated as silver and classifiable under tariff item 7106.91.00.