2530.90.80 - Other

This HTS category, 2530.90.80, encompasses a variety of mineral substances not elsewhere specified or included within Chapter 25, and which do not fall under the more specific "Other" subheadings like natural cryolite, natural chiolite, or natural micaceous iron oxides. These included materials are typically inorganic, naturally occurring substances that possess distinct physical and chemical properties, but lack dedicated classifications due to their diverse nature or less common usage in international trade.

The distinction from sibling categories is crucial. While 2530.90.10.00 and 2530.90.20.00 specifically identify natural cryolite, natural chiolite, and natural micaceous iron oxides, this broader "Other" category serves as a catch-all for other unclassified mineral products. The classification here hinges on the substance not being specifically provided for elsewhere in the Harmonized System, particularly within Chapter 25.

Within this broad classification, further specificity is provided by subcategories. These include 2530.90.80.10 for Celestite (strontium sulfate), 2530.90.80.15 for Earth colors (pigments derived from natural mineral sources), and 2530.90.80.50 for other residual items. The existence of these subcategories allows for a more granular identification of specific mineral commodities that share common characteristics or origins, facilitating more precise trade data collection and regulatory adherence.