Priceite Natural Borate from Japan
Priceite is a rare calcium borate hydroxide mineral (Ca4MgB10O19(OH)10·6H2O) found in boron deposits, appearing as yellow-brown crystals. It qualifies for HTS 2528.00.0010 as a natural calcium borate concentrate from mining operations, not including brine-extracted forms. Primarily used in research and specialty boron applications.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Submit XRF or ICP analysis reports confirming calcium borate mineralogy; declare exact moisture content as it impacts dry weight H3BO3 limits
• Avoid mislabeling as magnesium-dominant to prevent Chapter 25 shifts
• Partner with certified labs for customs valuation based on boron oxide equivalent