SiO2>=99.31% & Fe2O3<=0.018% Output:5000MT/month Size:14-400mesh HS code:25061000 Dock loading ... sand .Chemical composition and physical properties: SiO2>=99.31%Al2O3<=0.36%Fe2O3<=0.18%CaO<=0 ... cm3Hardness mohs>=8Porosity<=0.38%Size: Below 14mesh, 14-30mesh, 30-100mesh, 100-400mesh2. Productive process and ... anywhere! quartz sand / silica sand price (SiO2>99.31%,14mesh,14-30mesh,30-100mesh,100-400mesh)