Porphyry Tungsten Ore
Low-grade disseminated scheelite in porphyry copper deposits, <0.3% WO3 byproduct. Under HTS 2611.00.30.00 as tungsten ore when shipped separately from copper. Assay quantity governs statistical reporting.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If copper as principal metal
If copper value exceeds tungsten, classifies under copper ores.
If flotation byproduct concentrate
Porphyry tungsten recovered as scheelite concentrate from copper tailings.
If calcined for antimony
Furnace calcines of complex ores including tungsten for other metals.
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Import Tips & Compliance
• Separate tungsten stream documentation essential vs. copper ore (2603)
• Co-product revenue allocation may affect value declarations
• Test molybdenum interference in WO3 assays
Related Products under HTS 2611.00.30.00
Wolframite Ore
Wolframite is a primary tungsten-bearing ore mineral, typically containing 60-75% WO3, mined from hydrothermal veins. It falls under HTS 2611.00.30.00 as a tungsten ore used directly for concentrate production without significant processing. The assay quantity of metal content is reported without deductions per statistical notes.
Scheelite Ore
Scheelite ore consists of calcium tungstate (CaWO4) crystals from skarn or vein deposits, averaging 1-5% WO3 in raw form. Classified under HTS 2611.00.30.00 as unprocessed tungsten ore for milling into concentrates. Statistical notes require reporting pure metal content via assay.
Ferberite Tungsten Ore
Ferberite, an iron-rich endmember of the wolframite series, is a tungsten ore from granite-related deposits with high FeWO4 content. HTS 2611.00.30.00 covers this raw ore form before beneficiation. Metal content reported per assay without deductions.
Hübnerite Tungsten Ore
Hübnerite is a manganese-rich wolframite variety (MnWO4) extracted from pegmatites, serving as tungsten ore. Falls under HTS 2611.00.30.00 for unbeneficiated ores; statistical reporting focuses on tungsten assay.
Low-Grade Tungsten Skarn Ore
Skarn deposit ore containing scheelite disseminated in limestone, typically 0.5-2% WO3, mined via open pit. HTS 2611.00.30.00 applies to this raw tungsten ore before crushing/milling. Assay-based metal content reporting required.
Vein Wolframite Ore
High-grade wolframite from quartz veins in granite, 5-10% WO3, underground mined. Classified as tungsten ores under HTS 2611.00.30.00 in raw, uncrushed state. Statistical notes dictate undeducted metal reporting.