Gold content
Copper ores and concentrates > Gold content
Duty Rate (from China)
Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Subheadings
Products classified under HTS 2603.00.00
Chalcopyrite Copper Ore
Chalcopyrite is a primary copper sulfide ore mineral with the chemical formula CuFeS2, typically containing 20-30% copper content. It is mined and processed into concentrates for copper extraction in smelters. This falls under HTS 2603.00.00 as a copper ore and concentrate used directly in metal production.
Bornite Copper Concentrate
Bornite, or peacock ore, is a copper iron sulfide mineral (Cu5FeS4) yielding copper concentrates averaging 25-35% copper after flotation processing. It serves as feedstock for copper smelters worldwide. Classified under HTS 2603.00.00 for its role as copper-bearing ore material.
Chrysocolla Copper Ore
Chrysocolla is a hydrated copper silicate ore (Cu2H2Si2O5(OH)4) often found in oxidized zones, processed into low-grade concentrates for leaching operations. It contributes to copper production through hydrometallurgical methods. HTS 2603.00.00 covers this as a natural copper-bearing ore.
Malachite Copper Concentrate
Malachite (Cu2(CO3)(OH)2) is a vibrant green copper carbonate ore concentrated via crushing and flotation for acid leaching in copper production. Common in African and US deposits. Falls under HTS 2603.00.00 as copper ore and concentrates.
Azurite Oxide Copper Ore
Azurite (Cu3(CO3)2(OH)2) is a blue basic copper carbonate ore from secondary enrichment zones, yielding concentrates for solvent extraction-electrowinning (SX-EW) processes. HTS 2603.00.00 applies to these oxide copper ores.
Covellite Copper Sulfide Concentrate
Covellite (CuS) is an indigo-blue copper sulfide mineral producing high-purity concentrates (30-40% Cu) via selective flotation. Ideal for direct smelting. Classified in HTS 2603.00.00 as copper concentrates.
Tenorite Copper Oxide Ore
Tenorite (CuO) is a black copper oxide mineral from supergene enrichment, processed into concentrates for leaching with 40-60% copper grades. Used in SX-EW copper production. HTS 2603.00.00 designation for oxide ores.
Cuprite Copper Ore Concentrate
Cuprite (Cu2O) is a red copper oxide ore crushed and concentrated for heap leaching operations, typical copper content 40-80%. Common in porphyry deposits. Falls under HTS 2603.00.00 as copper ore.
Enargite Copper-Arsenic Ore
Enargite (Cu3AsS4) is an arsenic-bearing copper sulfide ore producing concentrates treated via autoclaving or roasting for copper and byproduct arsenic recovery. HTS 2603.00.00 despite arsenic content as primary copper ore.
Digénite Copper Sulfide Concentrate
Digénite (Cu9S5) forms secondary copper sulfide concentrates through supergene enrichment, yielding 45-55% copper for smelter feed. Flotation separates from chalcopyrite. HTS 2603.00.00 classification.