Calcined Witherite Lumps from United States
Witherite ore in lump form that has undergone thermal calcination to remove impurities while retaining its natural barium carbonate composition. This product falls under tariff item 2511.20.00 as calcined natural barium carbonate, provided the calcination does not convert it to barium oxide.
Duty Rate — United States → Canada
0%
Import Tips
• Confirm the calcination process does not produce barium oxide; if it does, classification changes to Chapter 28
• Keep records of the source mine and processing steps for CBSA verification
• Check if the lumps are considered 'crude' or 'processed' to ensure they meet Chapter 25 note 1 requirements