| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 6.364 | 0.669 | 4.878 | 9.073 |
| Arsenic | As (ppm) | 15.480 | 9.556 | 2.951 | 48.759 |
| Calcium | Ca (wt%) | 2.204 | 1.659 | 0.635 | 11.996 |
| Copper | Cu (ppm) | 39.857 | 23.414 | 10.132 | 171.530 |
| Iron | Fe (wt%) | 2.276 | 0.356 | 1.371 | 3.322 |
| Mercury | Hg (ppm) | 0.077 | 0.031 | 0.021 | 0.209 |
| Magnesium | Mg (wt%) | 1.172 | 0.494 | 0.434 | 3.291 |
| Manganese | Mn (ppm) | 666.334 | 272.726 | 174.705 | 1694.270 |
| Sodium | Na (wt%) | 0.985 | 0.400 | 0.302 | 3.090 |
| Phosphorus | P (wt%) | 0.068 | 0.014 | 0.045 | 0.115 |
| Lead | Pb (ppm) | 31.724 | 6.276 | 14.089 | 59.963 |
| Selenium | Se (ppm) | 0.322 | 0.079 | 0.113 | 0.596 |
| Titanium | Ti (wt%) | 0.259 | 0.055 | 0.132 | 0.467 |
| Zinc | Zn (ppm) | 95.991 | 50.495 | 21.512 | 358.150 |