| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 5.220 | 1.095 | 3.118 | 7.506 |
| Arsenic | As (ppm) | 10.768 | 2.574 | 5.818 | 16.213 |
| Calcium | Ca (wt%) | 0.744 | 0.500 | 0.151 | 2.341 |
| Copper | Cu (ppm) | 28.159 | 14.560 | 4.313 | 58.535 |
| Iron | Fe (wt%) | 3.833 | 0.714 | 2.119 | 5.269 |
| Mercury | Hg (ppm) | 0.388 | 0.564 | 0.038 | 3.446 |
| Magnesium | Mg (wt%) | 0.487 | 0.147 | 0.211 | 0.815 |
| Manganese | Mn (ppm) | 1130.030 | 401.282 | 412.710 | 2379.960 |
| Sodium | Na (wt%) | 0.473 | 0.057 | 0.350 | 0.661 |
| Phosphorus | P (wt%) | 0.055 | 0.009 | 0.036 | 0.079 |
| Lead | Pb (ppm) | 55.131 | 32.727 | 22.792 | 193.884 |
| Selenium | Se (ppm) | 0.573 | 0.209 | 0.128 | 1.092 |
| Titanium | Ti (wt%) | 0.297 | 0.040 | 0.211 | 0.364 |
| Zinc | Zn (ppm) | 146.922 | 55.552 | 60.120 | 330.607 |