Priceite Calcium Borate Mineral from Germany
Priceite, a rare calcium borate (Ca4Mg2B10O23), occurs naturally and is concentrated for specialty glass and flux applications. It qualifies for HTS 2528.00.0050 as other natural borates not from brine, maintaining under 85% H3BO3 equivalence. Supplied in ground or lump form post-mining.
Duty Rate — Germany → United States
10%
Rate breakdown
9903.05.3910%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.97, articles the product of a member state of the European Union, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 10 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Conduct spectrographic analysis for Mg/Ca ratio confirmation; label as non-brine source explicitly
• Store in dry conditions to preserve mineral integrity for customs inspection