Zircon Sand is generally found inland of ancient coastlines, some of which can be found very far inland, where the heavier mineral sands formed hardened deposits. These deposits are typically mined via dry or wet (dredge) mining techniques. Typical Chemical Analysis: ZrO2+HfO2 65.5-66.5% Fe2O3 0.04-0.07% TiO2 0.15-0.19% Al2O3 0.40-0.90% P2O5 0.06-0.09% SiO2(Total) 32.2-33.2% Free SiO2(as quartz) 0.25-0.45% U 200-230PPM Th 150-170PPM Physical Properties Refractive index:1.93 to 2.01 Specific Gravity:4.6-4.71g/cm3 Mohs Hardness:7.5-8 Melting point:2340-2550
