| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 5.129 | 1.047 | 1.742 | 9.461 |
| Arsenic | As (ppm) | 8.315 | 2.073 | 1.393 | 12.409 |
| Calcium | Ca (wt%) | 0.437 | 0.623 | 0.077 | 3.637 |
| Copper | Cu (ppm) | 19.738 | 4.348 | 6.972 | 37.316 |
| Iron | Fe (wt%) | 3.815 | 0.656 | 1.553 | 5.972 |
| Mercury | Hg (ppm) | 0.028 | 0.008 | 0.010 | 0.048 |
| Magnesium | Mg (wt%) | 0.403 | 0.246 | 0.112 | 1.749 |
| Manganese | Mn (ppm) | 1646.810 | 881.153 | 296.910 | 6569.110 |
| Sodium | Na (wt%) | 0.313 | 0.369 | 0.066 | 2.362 |
| Phosphorus | P (wt%) | 0.047 | 0.008 | 0.017 | 0.065 |
| Lead | Pb (ppm) | 17.411 | 5.219 | 2.149 | 24.330 |
| Selenium | Se (ppm) | 0.402 | 0.123 | 0.104 | 0.674 |
| Titanium | Ti (wt%) | 0.288 | 0.095 | 0.107 | 0.911 |
| Zinc | Zn (ppm) | 128.055 | 37.698 | 39.689 | 240.294 |