| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 4.668 | 1.498 | 1.911 | 9.428 |
| Arsenic | As (ppm) | 1.678 | 0.932 | 0.430 | 3.541 |
| Calcium | Ca (wt%) | 1.249 | 0.599 | 0.110 | 3.357 |
| Copper | Cu (ppm) | 13.220 | 5.415 | 4.348 | 35.267 |
| Iron | Fe (wt%) | 3.974 | 1.699 | 1.444 | 11.455 |
| Mercury | Hg (ppm) | 0.039 | 0.019 | 0.010 | 0.170 |
| Magnesium | Mg (wt%) | 0.503 | 0.292 | 0.108 | 1.802 |
| Manganese | Mn (ppm) | 1087.990 | 556.437 | 167.847 | 3153.590 |
| Sodium | Na (wt%) | 0.782 | 0.333 | 0.100 | 1.435 |
| Phosphorus | P (wt%) | 0.044 | 0.023 | 0.010 | 0.188 |
| Lead | Pb (ppm) | 26.000 | 7.518 | 14.021 | 46.406 |
| Selenium | Se (ppm) | 0.188 | 0.061 | 0.101 | 0.515 |
| Titanium | Ti (wt%) | 0.731 | 0.185 | 0.453 | 1.728 |
| Zinc | Zn (ppm) | 44.239 | 14.338 | 23.155 | 104.204 |