No. Alumina (aluminum oxide) produced by refining bauxite is classified under the chapter covering inorganic chemicals, not under heading 2606. Heading 2606 is limited to ore and concentrate that has not yet been chemically refined into aluminum oxide.

The Caribbean basin holds substantial gibbsite-type bauxite deposits that were developed in part to supply US alumina refineries, particularly those located along the Gulf Coast. Geographic proximity reduces shipping costs, and historical investment ties have sustained these trade flows over decades.