| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 3.700 | 0.634 | 1.356 | 5.186 |
| Arsenic | As (ppm) | 7.875 | 1.943 | 2.505 | 13.002 |
| Calcium | Ca (wt%) | 0.197 | 0.098 | 0.023 | 0.778 |
| Copper | Cu (ppm) | 11.219 | 4.357 | 1.009 | 20.850 |
| Iron | Fe (wt%) | 2.670 | 0.661 | 0.563 | 4.621 |
| Mercury | Hg (ppm) | 0.160 | 0.262 | 0.033 | 2.336 |
| Magnesium | Mg (wt%) | 0.222 | 0.049 | 0.044 | 0.347 |
| Manganese | Mn (ppm) | 1154.600 | 860.951 | 79.599 | 5281.470 |
| Sodium | Na (wt%) | 0.102 | 0.034 | 0.025 | 0.223 |
| Phosphorus | P (wt%) | 0.039 | 0.009 | 0.015 | 0.062 |
| Lead | Pb (ppm) | 21.460 | 4.234 | 10.015 | 32.773 |
| Selenium | Se (ppm) | 0.424 | 0.182 | 0.111 | 0.891 |
| Titanium | Ti (wt%) | 0.275 | 0.036 | 0.160 | 0.377 |
| Zinc | Zn (ppm) | 106.563 | 36.412 | 35.088 | 256.368 |