| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 7.465 | 0.613 | 3.575 | 9.515 |
| Arsenic | As (ppm) | 13.248 | 11.985 | 1.875 | 209.073 |
| Calcium | Ca (wt%) | 2.609 | 1.298 | 0.526 | 15.644 |
| Copper | Cu (ppm) | 31.567 | 18.603 | 6.433 | 421.268 |
| Iron | Fe (wt%) | 3.508 | 1.127 | 1.119 | 14.728 |
| Mercury | Hg (ppm) | 0.050 | 0.080 | 0.010 | 0.822 |
| Magnesium | Mg (wt%) | 0.961 | 0.285 | 0.244 | 3.518 |
| Manganese | Mn (ppm) | 985.989 | 288.033 | 226.795 | 3367.900 |
| Sodium | Na (wt%) | 1.985 | 0.470 | 0.334 | 4.278 |
| Phosphorus | P (wt%) | 0.085 | 0.018 | 0.023 | 0.212 |
| Lead | Pb (ppm) | 20.271 | 5.782 | 2.676 | 106.907 |
| Selenium | Se (ppm) | 0.272 | 0.378 | 0.100 | 7.839 |
| Titanium | Ti (wt%) | 0.438 | 0.176 | 0.147 | 2.079 |
| Zinc | Zn (ppm) | 89.256 | 21.367 | 33.599 | 387.214 |