| 元素 | F1得分 | F2得分 | F3得分 |
| Ag | 0.830 | 0.157 | −0.016 |
| Pb | 0.821 | −0.070 | −0.018 |
| Zn | 0.781 | 0.016 | −0.126 |
| Bi | 0.673 | 0.187 | 0.042 |
| As | 0.554 | 0.540 | 0.084 |
| Sb | 0.542 | 0.518 | 0.044 |
| Mo | −0.207 | 0.684 | −0.042 |
| Cu | 0.402 | 0.650 | 0.033 |
| W | −0.129 | −0.246 | 0.735 |
| Au | 0.071 | 0.255 | 0.680 |
| 特征值 | 3.701 | 1.222 | 1.003 |
| 方差贡献率(%) | 32.525 | 16.411 | 10.328 |
| 累计方差贡献率(%) | 32.525 | 48.935 | 59.264 |