Lithium Potassium Tungsten Bronze, Li₂W₅O₁₅.3K₂W₄O₁₂

Lithium Potassium Tungsten Bronze, Li₂W₅O₁₅.3K₂W₄O₁₂, is obtained as violet needles by reducing with tin a fused mixture containing lithium and potassium tungstates in molecular proportions.