| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 0.639 | 0.473 | 0.075 | 3.982 |
| Arsenic | As (ppm) | 1.402 | 0.567 | 0.348 | 3.947 |
| Calcium | Ca (wt%) | 0.263 | 0.201 | 0.018 | 1.412 |
| Copper | Cu (ppm) | 4.241 | 4.263 | 1.077 | 29.290 |
| Iron | Fe (wt%) | 0.330 | 0.116 | 0.069 | 0.791 |
| Mercury | Hg (ppm) | 0.028 | 0.022 | 0.011 | 0.218 |
| Magnesium | Mg (wt%) | 0.030 | 0.020 | 0.003 | 0.175 |
| Manganese | Mn (ppm) | 80.159 | 26.892 | 19.508 | 167.369 |
| Sodium | Na (wt%) | 0.020 | 0.019 | 0.003 | 0.179 |
| Phosphorus | P (wt%) | 0.024 | 0.015 | 0.003 | 0.093 |
| Lead | Pb (ppm) | 34.824 | 63.752 | 3.931 | 628.259 |
| Selenium | Se (ppm) | 0.167 | 0.079 | 0.101 | 0.722 |
| Titanium | Ti (wt%) | 0.453 | 0.125 | 0.133 | 1.098 |
| Zinc | Zn (ppm) | 35.497 | 85.978 | 1.657 | 833.787 |