In ceramic glazing applications in areas as diverse as wall tile, dinnerware, sanitary ware and electrical porcelain, important requirements are: opacity, increased craze resistance and glaze texture control. DuPont’s Florida zircon sands are naturally occurring sands mined from our heavy mineral deposits in Florida. These are clean products free from dirt and ultrafines. The sands are separated from other heavy minerals by physical processes to produce uniform, high-quality products. DuPont’s Florida zircon sands are also used in Precision Investment Casting, as a feedstock in Zirconia Chemical operations and in Foundry and Refractory applications. For more information, please click on Zircon sands.