(1) CaF2: 75% min SiO2: 24% max (2) CaF2: 80% min SiO2: 19% max (3) CaF2: 85% min SiO2: 14% max (4) CaF2: 88% min SiO2: 11% max (5) CaF2: 90% min SiO2: 9% max (6) CaF2: 92% min SiO2: 7% max (7) CaF2: 95% min SiO2: 4% max
The content of other chemical elements such as S, P, CaCO3 etc. Are different according to different vein.