Sample No. | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | Average |
SiO2 | 75.8 | 74.7 | 77.2 | 75.8 | 76.0 | 76.8 | 75.6 | 76.5 | 76.6 | 76.1 |
TiO2 | 0.05 | 0.24 | 0.04 | 0.1 | 0.08 | 0.07 | 0.09 | 0.03 | 0.08 | 0.09 |
Al2O3 | 12.3 | 12.1 | 12.0 | 12.5 | 12.2 | 12.2 | 12.2 | 12.3 | 12.3 | 12.2 |
Fe2O3 | 1.09 | 2.48 | 1.21 | 0.86 | 1.37 | 1.2 | 1.64 | 1.28 | 1.52 | 1.41 |
MnO | 0.02 | 0.05 | 0.02 | 0.01 | 0.01 | 0.02 | 0.01 | 0.03 | 0.02 | 0.02 |
MgO | 0.05 | 0.21 | 0.03 | 0.04 | 0.05 | 0.04 | 0.02 | 0.02 | 0.04 | 0.06 |
CaO | 0.45 | 0.82 | 0.32 | 0.64 | 0.37 | 0.76 | 0.55 | 0.18 | 0.35 | 0.49 |
Na2O | 4.5 | 3.87 | 4.32 | 4 | 3.92 | 3.92 | 4.06 | 4.56 | 4.13 | 4.14 |
K2O | 4.52 | 4.26 | 4.23 | 4.52 | 4.67 | 4.28 | 4.55 | 4.22 | 4.5 | 4.42 |
P2O5 | 0.01 | 0.05 | 0.01 | 0.02 | 0.01 | 0.01 | 0.01 | 0.01 | 0.01 | 0.02 |
L.O.I | 0.47 | 0.66 | 0.31 | 0.54 | 0.54 | 0.64 | 0.78 | 0.23 | 0.49 | 0.52 |
Total | 99.2 | 99.4 | 99.6 | 99.1 | 99.1 | 99.9 | 99.5 | 99.4 | 100 | 99.5 |
Cr | 3 | 2 | 10 | 50 | 1 | 2 | 3 | 4 | 1 | 8.4 |
Ni | 2 | 2 | 3 | 2 | 2 | 2 | 2 | 3 | 3 | 2.3 |
Cu | 2 | 6 | 14 | 6 | 5 | 11 | 5 | 3 | 6 | 6.4 |
Pb | 7 | 10 | 24 | 15 | 19 | 17 | 14 | 21 | 42 | 18.8 |
Zn | 80 | 107 | 121 | 31 | 78 | 24 | 48 | 188 | 131 | 89.8 |
Ga | 37 | 25 | 39 | 28 | 31 | 26 | 30 | 46 | 36 | 33.1 |
Ba | 26 | 339 | 12 | 125 | 78 | 41 | 57 | 9 | 47 | 81.6 |
Rb | 234 | 104 | 263 | 165 | 140 | 192 | 119 | 423 | 208 | 205.3 |
Sr | 7 | 59 | 6 | 30 | 18 | 15 | 14 | 6 | 14 | 18.8 |
Y | 88 | 81 | 117 | 75 | 90 | 62 | 89 | 140 | 115 | 95.2 |
Zr | 175 | 263 | 125 | 142 | 202 | 108 | 201 | 211 | 173 | 177.8 |
Nb | 71 | 48 | 81 | 48 | 61 | 66 | 48 | 113 | 71 | 67.4 |
Ta | 5 | 3 | 7 | 5 | 4 | 4 | 3 | 16 | 5 | 5.8 |
Sn | 13 | 14 | 17 | 9 | 11 | 14 | 7 | 90 | 21 | 21.8 |
Hf | 8 | 3 | 7 | 4 | 8 | 4 | 7 | 18 | 9 | 7.6 |
U | 4 | 14 | 7 | 6 | 6 | 11 | 4 | 19 | 5 | 8.4 |
Th | 15 | 17 | 18 | 20 | 13 | 27 | 14 | 29 | 14 | 18.6 |
Th/U | 3.8 | 1.2 | 2.6 | 3.3 | 2.2 | 2.5 | 3.5 | 1.5 | 2.8 | 2.6 |