| Linear productivity (M) | Contrast coefficient | |||
| PI (NW) | PII (Central) | PIII (SE) | ||
| Ag | 0.5 | 0.7 | 1.5 | 0.33 |
| As | 1077 | 31 | 217 | 4.96 |
| Cr | 41 | 91.5 | 43 | 0.95 |
| Ni | 33 | 54.5 | 22 | 1.5 |
| Co | 10.2 | 21 | 13.3 | 0.77 |
| Cu | 101.5 | 102 | 59.5 | 1.71 |
| Zn | 2322 | 111.5 | 286 | 8.12 |
| Pb | 2899.5 | 127 | 559 | 5.19 |
| Total | 6484.7 | 539.2 | 1201.3 |
|