Zinc Silicate Ore Concentrate Borderline
Low-grade zinc silicate ore fines suitable for heap leaching rather than flotation. Borderline classification under HTS 2608.00.00 as crude ore when not fully concentrated. Used in solvent extraction-electrowinning zinc circuits.
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 double salts of zinc for chemical use
Soluble zinc chemicals from leaching become Chapter 28 salts.
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• Document processing history to prove crude ore status vs. concentrate for correct statistical breakout
• Test for soluble silica content that affects leaching efficiency and declaration accuracy
• Use double-lined containers for potentially acidic leach-prone ores
Related Products under HTS 2608.00.00
Zinc Blende Ore
Zinc blende, also known as sphalerite, is the primary zinc ore consisting mainly of zinc sulfide (ZnS) with minor impurities. It falls under HTS 2608.00.00 as a zinc ore mined directly from deposits and used for zinc extraction after concentration. This classification covers natural zinc-bearing ores prior to smelting or refining.
Willemite Zinc Ore
Willemite is a zinc silicate mineral (Zn₂SiO₄) found in oxidized zinc deposits, often with fluorescent properties. Classified under HTS 2608.00.00 as a natural zinc ore suitable for concentration and smelting into zinc metal. It represents secondary zinc ores from weathered primary deposits.
Smithsonite Zinc Ore
Smithsonite (ZnCO₃) is a zinc carbonate ore formed through supergene enrichment in zinc deposits. It is imported under HTS 2608.00.00 as a zinc ore for roasting and leaching in zinc production. This ore type is common in nonsulfide zinc deposits.
Hemimorphite Zinc Ore
Hemimorphite (Zn₄Si₂O₇(OH)₂·H₂O) is a hydrated zinc silicate ore from oxidized zones of zinc deposits. HTS 2608.00.00 covers this ore as it is concentrated for zinc silicate flotation recovery. It serves as an important source for secondary zinc production.
Calamine Zinc Ore
Calamine refers to a mixture of zinc carbonate and silicate ores, historically mined for zinc extraction. Under HTS 2608.00.00, it qualifies as zinc ore when containing sufficient zinc for metallurgical recovery. Common in European and North American deposits.
Zinc-Lead Mixed Ore
Polymetallic ores containing both zinc and lead sulfides, such as those from Red Dog mine, with zinc as principal value. Classified under HTS 2608.00.00 when zinc predominates for separate concentration circuits. These ores require complex flotation separation.