| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 0.449 | 0.324 | 0.050 | 3.793 |
| Arsenic | As (ppm) | 1.352 | 0.649 | 0.409 | 6.141 |
| Calcium | Ca (wt%) | 0.269 | 0.243 | 0.004 | 2.576 |
| Copper | Cu (ppm) | 22.869 | 37.080 | 1.048 | 245.146 |
| Iron | Fe (wt%) | 0.225 | 0.141 | 0.038 | 1.445 |
| Mercury | Hg (ppm) | 0.024 | 0.014 | 0.010 | 0.097 |
| Magnesium | Mg (wt%) | 0.018 | 0.009 | 0.003 | 0.055 |
| Manganese | Mn (ppm) | 79.573 | 67.017 | 10.297 | 444.539 |
| Sodium | Na (wt%) | 0.009 | 0.009 | 0.003 | 0.052 |
| Phosphorus | P (wt%) | 0.032 | 0.024 | 0.005 | 0.135 |
| Lead | Pb (ppm) | 19.068 | 8.409 | 5.131 | 51.037 |
| Selenium | Se (ppm) | 0.168 | 0.061 | 0.100 | 0.511 |
| Titanium | Ti (wt%) | 0.396 | 0.121 | 0.141 | 1.084 |
| Zinc | Zn (ppm) | 23.327 | 29.594 | 1.943 | 188.875 |