| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 4.591 | 0.410 | 3.576 | 5.242 |
| Arsenic | As (ppm) | 3.759 | 0.524 | 3.081 | 5.083 |
| Calcium | Ca (wt%) | 1.219 | 0.218 | 0.905 | 1.864 |
| Copper | Cu (ppm) | 16.130 | 5.817 | 5.216 | 28.205 |
| Iron | Fe (wt%) | 3.720 | 0.534 | 2.558 | 6.094 |
| Mercury | Hg (ppm) | 0.115 | 0.044 | 0.051 | 0.280 |
| Magnesium | Mg (wt%) | 0.783 | 0.122 | 0.523 | 1.181 |
| Manganese | Mn (ppm) | 1139.540 | 214.092 | 556.790 | 1506.890 |
| Sodium | Na (wt%) | 1.209 | 0.229 | 0.829 | 1.705 |
| Phosphorus | P (wt%) | 0.086 | 0.014 | 0.055 | 0.119 |
| Lead | Pb (ppm) | 50.935 | 18.528 | 29.082 | 91.233 |
| Selenium | Se (ppm) | 0.356 | 0.083 | 0.203 | 0.615 |
| Titanium | Ti (wt%) | 0.679 | 0.091 | 0.513 | 0.995 |
| Zinc | Zn (ppm) | 101.024 | 7.037 | 91.374 | 122.461 |