| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 5.019 | 1.338 | 2.314 | 8.051 |
| Arsenic | As (ppm) | 1.276 | 0.491 | 0.463 | 3.557 |
| Calcium | Ca (wt%) | 0.968 | 0.171 | 0.447 | 1.343 |
| Copper | Cu (ppm) | 9.409 | 2.107 | 4.102 | 14.602 |
| Iron | Fe (wt%) | 2.768 | 0.607 | 1.433 | 4.170 |
| Mercury | Hg (ppm) | 0.036 | 0.033 | 0.014 | 0.305 |
| Magnesium | Mg (wt%) | 0.257 | 0.105 | 0.094 | 0.564 |
| Manganese | Mn (ppm) | 1504.970 | 581.853 | 495.811 | 3014.220 |
| Sodium | Na (wt%) | 0.859 | 0.221 | 0.431 | 1.387 |
| Phosphorus | P (wt%) | 0.018 | 0.008 | 0.004 | 0.034 |
| Lead | Pb (ppm) | 38.468 | 11.252 | 17.800 | 85.606 |
| Selenium | Se (ppm) | 0.131 | 0.023 | 0.100 | 0.199 |
| Titanium | Ti (wt%) | 0.749 | 0.240 | 0.303 | 1.527 |
| Zinc | Zn (ppm) | 46.270 | 10.866 | 22.336 | 74.591 |