| Error percentage of replicate samples | |
| Au | 83/12 |
| Ag | 46/33 |
| Cu | 90/12 |
| Fe2O3 | 26/3 |
| Mo | 17/13 |
| Pb | 60/15 |
| Zn | 66/21 |
| W | 30/17 |
| As | 70/19 |
| Sb | 92/28 |