A highly porous igneous rock, usually containing 67 – 75% SiO₂ and 10 – 20% AI203, glassy texture. Used as concrete aggregate, heat and insulation, filtration, finishing glass and plastics, road absorbents, support for catalysts, adherent for uncured rubber products and possible substitute for asbestos.
Packaging: 50 lb. bag
A highly porous igneous rock, usually containing 67 – 75% SiO₂ and 10 – 20% AI203, glassy texture. Used as concrete aggregate, heat and insulation, filtration, finishing glass and plastics, road absorbents, support for catalysts, adherent for uncured rubber products and possible substitute for asbestos.
Packaging: 50 lb. bag
