Synthetic Scheelite Calcium Tungstate from Germany
Synthetic scheelite, the mineral form of calcium tungstate (CaWO4), produced for phosphor manufacturing and gemstone simulation. Classified in HTS 2841.80.0020 as chemically defined calcium tungstates. Distinguished from natural mineral ores by laboratory synthesis.
Duty Rate — Germany → United States
5.5%
Rate breakdown
9903.05.860%Articles provided for in subdivision (b) of U.S. note 52 to this subchapter
Import Tips
• Provide synthesis certificates differentiating from natural scheelite ore (2613); assay reports confirming >95% CaWO4
• Pitfall: natural impurities may trigger mineral headings