| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 4.509 | 0.746 | 2.542 | 6.118 |
| Arsenic | As (ppm) | 8.050 | 1.818 | 2.687 | 12.781 |
| Calcium | Ca (wt%) | 0.503 | 0.193 | 0.120 | 1.172 |
| Copper | Cu (ppm) | 25.530 | 9.117 | 9.855 | 60.505 |
| Iron | Fe (wt%) | 3.188 | 0.612 | 1.556 | 4.714 |
| Mercury | Hg (ppm) | 2.337 | 1.540 | 0.144 | 8.630 |
| Magnesium | Mg (wt%) | 0.389 | 0.097 | 0.157 | 0.602 |
| Manganese | Mn (ppm) | 2489.040 | 1037.610 | 424.648 | 5374.360 |
| Sodium | Na (wt%) | 0.106 | 0.022 | 0.052 | 0.150 |
| Phosphorus | P (wt%) | 0.047 | 0.015 | 0.018 | 0.096 |
| Lead | Pb (ppm) | 53.720 | 22.601 | 19.348 | 147.071 |
| Selenium | Se (ppm) | 0.310 | 0.058 | 0.124 | 0.475 |
| Titanium | Ti (wt%) | 0.376 | 0.047 | 0.227 | 0.464 |
| Zinc | Zn (ppm) | 128.205 | 70.632 | 29.847 | 420.662 |