Introduction of quartz sand Quartz sand is a hard, wear-resisting, stable chemical property of silicate minerals, the main mineral composition is SiO2, quartz sand color is milky white, or colorless translucent, hardness, brittle cleavage, conchoidal fracture, oily luster, density is 2.65, bulk density (1-20 1.6-1.8), 20-200 head is 1.5, the chemical, thermal and mechanical properties has obvious differences to, insoluble in acid, slightly soluble in KOH solution, melting point 1750 DEG C. Quartz sand is a colorless, transparent quartz variant, the Greeks called "Krystallos", meaning "white ice", they are convinced that the quartz is durable and solid ice. The ancient people think Chinese mouth cold crystal can quench your thirst. Quartz sandstone is a consolidated clastic rock, and the content of quartz is more than 95%, which comes from a variety of magmatic rocks, sedimentary rocks and metamorphic rocks, less heavy minerals, associated minerals are feldspar, mica and clay minerals. Two types of sedimentary origin and metamorphic origin of quartz rock, the boundary between the former clastic particles and cement is not obvious, the latter refers to the degree of metamorphism, the quality of pure quartz rock. Quartz veins are formed by hydrothermal action, almost all of which are composed of quartz.
