| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 8.210 | 1.088 | 4.874 | 11.283 |
| Arsenic | As (ppm) | 8.385 | 6.317 | 0.805 | 39.854 |
| Calcium | Ca (wt%) | 2.013 | 0.769 | 0.678 | 4.657 |
| Copper | Cu (ppm) | 35.200 | 15.762 | 1.210 | 78.719 |
| Iron | Fe (wt%) | 6.156 | 1.892 | 0.983 | 13.959 |
| Mercury | Hg (ppm) | 0.055 | 0.039 | 0.010 | 0.328 |
| Magnesium | Mg (wt%) | 1.257 | 0.608 | 0.342 | 4.024 |
| Manganese | Mn (ppm) | 1148.840 | 398.402 | 258.033 | 3775.030 |
| Sodium | Na (wt%) | 1.515 | 0.384 | 0.425 | 2.688 |
| Phosphorus | P (wt%) | 0.086 | 0.049 | 0.009 | 0.292 |
| Lead | Pb (ppm) | 11.710 | 4.228 | 2.222 | 35.803 |
| Selenium | Se (ppm) | 0.171 | 0.089 | 0.100 | 0.671 |
| Titanium | Ti (wt%) | 0.801 | 0.206 | 0.185 | 1.478 |
| Zinc | Zn (ppm) | 99.912 | 30.134 | 19.271 | 264.795 |