| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 3.757 | 0.779 | 1.956 | 5.828 |
| Arsenic | As (ppm) | 6.743 | 1.723 | 2.279 | 12.109 |
| Calcium | Ca (wt%) | 0.277 | 0.258 | 0.054 | 2.276 |
| Copper | Cu (ppm) | 13.353 | 4.793 | 3.105 | 31.552 |
| Iron | Fe (wt%) | 2.538 | 0.692 | 0.944 | 4.166 |
| Mercury | Hg (ppm) | 0.057 | 0.013 | 0.024 | 0.123 |
| Magnesium | Mg (wt%) | 0.238 | 0.067 | 0.077 | 0.516 |
| Manganese | Mn (ppm) | 763.331 | 241.648 | 271.819 | 1502.500 |
| Sodium | Na (wt%) | 0.233 | 0.152 | 0.042 | 0.665 |
| Phosphorus | P (wt%) | 0.041 | 0.013 | 0.015 | 0.070 |
| Lead | Pb (ppm) | 23.341 | 5.090 | 11.135 | 39.934 |
| Selenium | Se (ppm) | 0.404 | 0.122 | 0.104 | 0.689 |
| Titanium | Ti (wt%) | 0.279 | 0.022 | 0.207 | 0.356 |
| Zinc | Zn (ppm) | 89.019 | 22.589 | 50.129 | 191.081 |