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Calcined Kyanite Powder from Canada

Calcined kyanite is a high-alumina aluminosilicate mineral processed by heating to stabilize its crystal structure, preventing volume expansion during ceramic firing. It is classified under HTS 2508.50.00.00 as calcined kyanite, a form of sillimanite group mineral used primarily in refractory and ceramic applications.

Duty Rate — Canada → United States

10%

Rate breakdown

9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada

Import Tips

Verify mineral purity through lab analysis certificates to confirm andalusite/kyanite/sillimanite content over 50% as per Chapter 25 notes

Include heat treatment records showing calcination process to distinguish from unprocessed minerals under heading 2512

Avoid misclassification as synthetic mullite (HTS 2529); provide geological origin documentation