Any of the numerous types of clay which contain varying proportions of Al2O3 and SiO2. They are made synthetically by heating aluminum fluoride at 1000-2000 degrees C with silica and water vapor. (From Hawley's Condensed Chemical Dictionary, 11th ed)

Synonyms: 0, Silicate, Aluminum, Aluminum Silicates, Aluminum Silicate, Silicates, Aluminum