Arkansas Leads the U.S. in Bauxite Mining

Arkansas is the #1 producer of bauxite ore in the United States — and has been for over a century.

🪨 What Is Bauxite?

• Primary ore of aluminum
• Mixture of aluminum hydroxides (gibbsite, boehmite, diaspore) + iron oxides, clay
• Forms via tropical weathering of aluminum-rich rocks — Arkansas had Eocene laterites

📍 Where in Arkansas?

• Saline County — Bauxite, AR (town named for the ore)
• Pulaski County — near Little Rock
• Deposits: Wilcox Group (Eocene) — lateritic soils over nepheline syenite

📈 Production History

• 1898–1990: Major domestic source — peaked WWII (1.6M tons/yr for aircraft)
• 1990s: Primary mining ceased — cheaper imports (Jamaica, Guinea, Australia)
• Present: Limited specialty mining (proppants, refractories, cement) — still #1 by default

🇺🇸 US Import Dependence

• ~100% import-reliant for primary aluminum smelting
• Domestic bauxite used for non-metallurgical: abrasives, cement, proppants (fracking)

🏛️ Legacy

• Bauxite, AR: Company town (Alcoa/Reynolds); museum, annual Bauxite Festival
• Alcoa founded on Arkansas ore (1888 Pittsburgh Reduction Co. → Alcoa)

Arkansas bauxite built the U.S. aluminum industry — WWII planes, postwar suburbs, space program. The ore's gone, but the legacy is structural.