| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 5.741 | 0.857 | 3.081 | 6.969 |
| Arsenic | As (ppm) | 6.723 | 1.495 | 3.818 | 9.780 |
| Calcium | Ca (wt%) | 0.797 | 0.196 | 0.406 | 1.568 |
| Copper | Cu (ppm) | 21.410 | 6.909 | 5.203 | 42.524 |
| Iron | Fe (wt%) | 3.466 | 0.544 | 2.055 | 5.643 |
| Mercury | Hg (ppm) | 0.049 | 0.010 | 0.027 | 0.092 |
| Magnesium | Mg (wt%) | 0.676 | 0.125 | 0.359 | 1.125 |
| Manganese | Mn (ppm) | 933.649 | 193.827 | 539.840 | 1484.870 |
| Sodium | Na (wt%) | 0.941 | 0.321 | 0.388 | 1.805 |
| Phosphorus | P (wt%) | 0.066 | 0.018 | 0.024 | 0.119 |
| Lead | Pb (ppm) | 36.394 | 14.178 | 20.243 | 88.220 |
| Selenium | Se (ppm) | 0.508 | 0.088 | 0.229 | 0.687 |
| Titanium | Ti (wt%) | 0.446 | 0.116 | 0.278 | 0.816 |
| Zinc | Zn (ppm) | 100.209 | 20.819 | 57.052 | 167.061 |