| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 3.947 | 1.165 | 0.899 | 6.649 |
| Arsenic | As (ppm) | 2.740 | 1.149 | 1.198 | 7.338 |
| Calcium | Ca (wt%) | 0.266 | 0.125 | 0.046 | 0.618 |
| Copper | Cu (ppm) | 10.100 | 2.837 | 2.235 | 18.263 |
| Iron | Fe (wt%) | 2.440 | 0.709 | 0.448 | 3.884 |
| Mercury | Hg (ppm) | 0.174 | 0.031 | 0.104 | 0.267 |
| Magnesium | Mg (wt%) | 0.188 | 0.051 | 0.072 | 0.320 |
| Manganese | Mn (ppm) | 568.976 | 206.032 | 84.627 | 993.824 |
| Sodium | Na (wt%) | 0.204 | 0.068 | 0.026 | 0.388 |
| Phosphorus | P (wt%) | 0.026 | 0.004 | 0.018 | 0.037 |
| Lead | Pb (ppm) | 20.604 | 4.630 | 7.563 | 32.017 |
| Selenium | Se (ppm) | 0.190 | 0.089 | 0.101 | 0.539 |
| Titanium | Ti (wt%) | 0.610 | 0.121 | 0.189 | 0.968 |
| Zinc | Zn (ppm) | 42.551 | 15.490 | 10.796 | 93.280 |