Kieserite Mineral Flakes from Mexico
Flaked natural kieserite obtained by crushing and screening raw ore, retaining its natural magnesium sulfate composition without chemical alteration. Classified under HTS 2530.20.10.00 as unprocessed kieserite per Chapter 25 notes excluding worked minerals. Primarily imported for agricultural soil amendment.
Duty Rate — Mexico → United States
0%
Rate breakdown
9903.05.860%Universal product exemption (U.S. note 52(b))
Import Tips
• Provide geological assay reports confirming natural origin; avoid fine grinding that might classify as powder under chemicals; declare exact moisture content to prevent duty disputes