| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 7.258 | 0.485 | 5.512 | 8.964 |
| Arsenic | As (ppm) | 4.125 | 0.965 | 1.653 | 9.255 |
| Calcium | Ca (wt%) | 2.564 | 0.550 | 1.531 | 5.277 |
| Copper | Cu (ppm) | 26.038 | 14.103 | 11.018 | 95.856 |
| Iron | Fe (wt%) | 4.867 | 0.980 | 2.205 | 8.474 |
| Mercury | Hg (ppm) | 0.026 | 0.029 | 0.010 | 0.213 |
| Magnesium | Mg (wt%) | 1.227 | 0.263 | 0.781 | 2.534 |
| Manganese | Mn (ppm) | 910.446 | 204.105 | 406.197 | 2264.010 |
| Sodium | Na (wt%) | 1.802 | 0.201 | 1.024 | 2.298 |
| Phosphorus | P (wt%) | 0.085 | 0.016 | 0.016 | 0.123 |
| Lead | Pb (ppm) | 37.642 | 54.290 | 6.326 | 439.262 |
| Selenium | Se (ppm) | 0.135 | 0.055 | 0.100 | 0.532 |
| Titanium | Ti (wt%) | 0.698 | 0.148 | 0.289 | 1.248 |
| Zinc | Zn (ppm) | 91.696 | 14.177 | 39.527 | 164.257 |