Silica Quartz IntroductionSilica Quartz is is the most common silica mineral, its main content is SiO2, specific density 2.65g/cm3, hexagon crystal, lump or powder form. Appearance color: colorless, white, cyan gray. It's a high quality quartz smelting process through a unique form processing, Its crystal structure orderly transition from disorder to order, products with high whitness,stable ...