| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 3.580 | 0.433 | 2.575 | 5.444 |
| Arsenic | As (ppm) | 8.703 | 1.618 | 3.357 | 12.381 |
| Calcium | Ca (wt%) | 0.123 | 0.035 | 0.036 | 0.224 |
| Copper | Cu (ppm) | 15.746 | 5.177 | 6.011 | 36.675 |
| Iron | Fe (wt%) | 2.100 | 0.169 | 1.508 | 2.843 |
| Mercury | Hg (ppm) | 0.055 | 0.014 | 0.015 | 0.097 |
| Magnesium | Mg (wt%) | 0.259 | 0.050 | 0.165 | 0.520 |
| Manganese | Mn (ppm) | 1176.120 | 451.641 | 357.956 | 3928.990 |
| Sodium | Na (wt%) | 0.318 | 0.114 | 0.095 | 0.612 |
| Phosphorus | P (wt%) | 0.040 | 0.007 | 0.021 | 0.058 |
| Lead | Pb (ppm) | 37.917 | 16.240 | 19.119 | 102.921 |
| Selenium | Se (ppm) | 0.502 | 0.215 | 0.204 | 1.538 |
| Titanium | Ti (wt%) | 0.310 | 0.037 | 0.204 | 0.411 |
| Zinc | Zn (ppm) | 96.118 | 22.688 | 48.746 | 183.632 |