| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 1.340 | 0.572 | 0.302 | 3.223 |
| Arsenic | As (ppm) | 2.280 | 0.871 | 0.322 | 6.788 |
| Calcium | Ca (wt%) | 0.129 | 0.160 | 0.014 | 1.084 |
| Copper | Cu (ppm) | 2.589 | 0.781 | 1.018 | 7.646 |
| Iron | Fe (wt%) | 0.700 | 0.259 | 0.105 | 2.073 |
| Mercury | Hg (ppm) | 0.030 | 0.043 | 0.010 | 0.315 |
| Magnesium | Mg (wt%) | 0.048 | 0.027 | 0.011 | 0.142 |
| Manganese | Mn (ppm) | 121.819 | 28.504 | 34.784 | 215.503 |
| Sodium | Na (wt%) | 0.059 | 0.026 | 0.015 | 0.150 |
| Phosphorus | P (wt%) | 0.015 | 0.003 | 0.006 | 0.024 |
| Lead | Pb (ppm) | 13.876 | 2.283 | 6.800 | 20.941 |
| Selenium | Se (ppm) | 0.158 | 0.053 | 0.100 | 0.345 |
| Titanium | Ti (wt%) | 0.409 | 0.066 | 0.148 | 0.624 |
| Zinc | Zn (ppm) | 12.883 | 5.597 | 5.503 | 52.935 |