| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 4.761 | 0.482 | 3.866 | 5.619 |
| Arsenic | As (ppm) | 8.784 | 1.830 | 5.921 | 15.205 |
| Calcium | Ca (wt%) | 0.205 | 0.036 | 0.141 | 0.275 |
| Copper | Cu (ppm) | 9.860 | 1.684 | 6.337 | 17.556 |
| Iron | Fe (wt%) | 2.882 | 0.407 | 2.080 | 3.587 |
| Mercury | Hg (ppm) | 0.067 | 0.035 | 0.023 | 0.191 |
| Magnesium | Mg (wt%) | 0.475 | 0.063 | 0.336 | 0.567 |
| Manganese | Mn (ppm) | 763.744 | 117.546 | 491.366 | 1042.280 |
| Sodium | Na (wt%) | 0.559 | 0.054 | 0.460 | 0.661 |
| Phosphorus | P (wt%) | 0.054 | 0.009 | 0.042 | 0.084 |
| Lead | Pb (ppm) | 36.057 | 13.493 | 21.276 | 110.481 |
| Selenium | Se (ppm) | 0.192 | 0.048 | 0.110 | 0.441 |
| Titanium | Ti (wt%) | 0.260 | 0.023 | 0.224 | 0.315 |
| Zinc | Zn (ppm) | 83.022 | 7.978 | 71.936 | 108.528 |