| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 6.299 | 1.298 | 1.359 | 8.269 |
| Arsenic | As (ppm) | 5.716 | 3.663 | 1.485 | 33.444 |
| Calcium | Ca (wt%) | 3.139 | 2.302 | 0.769 | 17.028 |
| Copper | Cu (ppm) | 17.253 | 7.063 | 3.263 | 50.825 |
| Iron | Fe (wt%) | 2.771 | 0.374 | 0.975 | 4.738 |
| Mercury | Hg (ppm) | 0.060 | 0.016 | 0.022 | 0.113 |
| Magnesium | Mg (wt%) | 1.704 | 1.560 | 0.497 | 10.773 |
| Manganese | Mn (ppm) | 935.964 | 532.354 | 316.661 | 4149.760 |
| Sodium | Na (wt%) | 1.457 | 0.500 | 0.219 | 2.731 |
| Phosphorus | P (wt%) | 0.088 | 0.034 | 0.024 | 0.229 |
| Lead | Pb (ppm) | 27.854 | 4.138 | 14.661 | 39.434 |
| Selenium | Se (ppm) | 0.292 | 0.096 | 0.102 | 0.653 |
| Titanium | Ti (wt%) | 0.360 | 0.081 | 0.114 | 0.606 |
| Zinc | Zn (ppm) | 66.868 | 25.764 | 32.985 | 242.076 |