1.This is 80-120 Quartz Sand. 2.It is used in inner layer for shell-making. 3.It is used in ... 1.The Quartz sand`s main component is quartz.2.the density is 2.65 grams per square centimeter, Mohs ... hardness is 7, the crystallization is 60,000 grain system, the appearance is white, blue gray, gray ... of exterior wall coating, road painting line paint...... 80-120M Fused Quartz Sand