2615.90 - Other:

This HTS category, 2615.90, encompasses ores and concentrates of niobium (columbium), tantalum, and vanadium that are not specifically classified elsewhere within the 2615 heading. It covers raw or partially processed materials containing these metals, intended for further refining or use in industrial applications. These materials are distinguished from their sibling category, 2615.10, which is exclusively dedicated to zirconium ores and concentrates. The focus here is on the unique mineralogical compositions and origins of niobium, tantalum, and vanadium-bearing materials.

The subcategories within 2615.90 further refine the classification based on the nature and processing of these ores and concentrates. Specifically, 2615.90.30.00 addresses synthetic tantalum-niobium (columbium) concentrates, which are man-made materials produced through chemical processes rather than mined directly from geological deposits. The residual category, 2615.90.60, captures all other ores and concentrates of niobium, tantalum, and vanadium not falling under the synthetic designation, reflecting the broad diversity of natural mineral occurrences of these elements.