S.No | R1 | R2 | R3 | R4 | R5 | R6 |
SiO2 | 99.54 | 99.55 | 99.62 | 99.55 | 99.63 | 99.56 |
TiO2 | <0.01 | <0.01 | <0.01 | <0.01 | <0.01 | <0.01 |
Al2O3 | 0.12 | 0.07 | 0.08 | 0.08 | 0.07 | 0.09 |
Fe2O3 | 0.016 | 0.018 | 0.014 | 0.018 | 0.015 | 0.016 |
MnO | <0.01 | <0.01 | <0.01 | <0.01 | <0.01 | <0.01 |
MgO | <0.01 | <0.01 | <0.01 | <0.01 | <0.01 | <0.01 |
CaO | <0.01 | <0.01 | <0.01 | <0.01 | <0.01 | <0.01 |
Na2O | <0.01 | <0.01 | <0.01 | <0.01 | <0.01 | <0.01 |
K2O | <0.01 | <0.01 | <0.01 | <0.01 | <0.01 | <0.01 |
P2O5 | 0.01 | 0.01 | 0.01 | 0.01 | 0.01 | 0.01 |
L.O.I | 0. 12 | 0.20 | 0.18 | 0.14 | 0.13 | 0.19 |
Trace elements (ppm) | ||||||
V | <1 | <1 | <1 | <1 | <1 | <1 |
Cr | 2 | 4 | 5 | 4 | 5 | 3 |
Co | 4 | 5 | 5 | 4 | 4 | 5 |
Ni | 3 | 9 | 3 | 5 | 5 | 5 |
Cu | 6 | 10 | 3 | 6 | 7 | 6 |
Zn | 2 | 9 | 6 | 5 | 4 | 6 |
Ga | <1 | <1 | <1 | <1 | <1 | <1 |
As | <1 | <1 | <1 | <1 | <1 | <1 |
Sr | <1 | <1 | <1 | <1 | <1 | <1 |
Zr | 5 | 4 | 5 | 4 | 4 | 5 |
Mo | 2 | <1 | 2 | 2 | 2 | 2 |
Sn | 2 | 3 | 2 | 3 | 3 | 3 |
Sb | 1 | 2 | 1 | 1 | 1 | 1 |
Ba | <1 | <1 | <1 | <1 | <1 | <1 |
La | <1 | <1 | <1 | <1 | <1 | <1 |
Hf | <1 | <1 | <1 | <1 | <1 | <1 |
Pb | 7 | 7 | 8 | 6 | 7 | 7 |
Th | 3 | 6 | 5 | 4 | 4 | 5 |
U | 3 | 2 | 4 | 3 | 4 | 3 |