| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 4.655 | 0.784 | 2.312 | 6.052 |
| Arsenic | As (ppm) | 5.781 | 1.624 | 1.596 | 12.238 |
| Calcium | Ca (wt%) | 5.327 | 2.936 | 0.814 | 14.657 |
| Copper | Cu (ppm) | 10.455 | 2.842 | 2.291 | 19.323 |
| Iron | Fe (wt%) | 2.063 | 0.505 | 0.784 | 4.272 |
| Mercury | Hg (ppm) | 0.018 | 0.007 | 0.010 | 0.039 |
| Magnesium | Mg (wt%) | 0.654 | 0.272 | 0.148 | 1.706 |
| Manganese | Mn (ppm) | 513.951 | 159.978 | 198.536 | 1230.710 |
| Sodium | Na (wt%) | 0.793 | 0.587 | 0.100 | 2.331 |
| Phosphorus | P (wt%) | 0.046 | 0.010 | 0.017 | 0.084 |
| Lead | Pb (ppm) | 13.267 | 5.430 | 2.087 | 38.175 |
| Selenium | Se (ppm) | 0.266 | 0.108 | 0.101 | 0.669 |
| Titanium | Ti (wt%) | 0.314 | 0.068 | 0.096 | 0.632 |
| Zinc | Zn (ppm) | 39.409 | 12.825 | 10.472 | 82.605 |