2530.90.80.10 - Celestite

This HTS classification, 2530.90.80.10, specifically covers celestite, also known as strontium sulfate. Celestite is a naturally occurring mineral that is a significant source of strontium, a metal used in a variety of industrial applications, including the production of fireworks, glass for CRT televisions, and some alloys. Its classification within Chapter 25, under "Salt; sulfur; earths and stone; plastering materials, lime and cement," and further within "Mineral substances not elsewhere specified or included," signifies its raw mineral nature and its lack of specific enumeration in other mineral chapters.

Celestite is distinguished from its sibling categories by its precise chemical composition and primary use as a strontium source. While "Earth colors" (2530.90.80.15) refers to mineral pigments, and "Other" (2530.90.80.50) encompasses a broad range of miscellaneous mineral substances not otherwise classified, celestite is defined by its identity as strontium sulfate. This specificity is crucial for accurate tariff assessment and trade statistics, ensuring that material intended for strontium extraction is correctly identified.

As this classification is a leaf node, there are no further subcategories. The classification of celestite at this level signifies that it has been specifically identified and distinguished from other mineral substances. Therefore, any material that meets the definition of celestite and is not specifically classified elsewhere under the HTS will fall under this code. Classification relies on the physical and chemical properties of the substance, confirming it as strontium sulfate.