| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 6.988 | 0.508 | 4.107 | 8.753 |
| Arsenic | As (ppm) | 17.176 | 20.415 | 2.672 | 344.174 |
| Calcium | Ca (wt%) | 2.589 | 1.089 | 0.843 | 22.155 |
| Copper | Cu (ppm) | 31.915 | 74.678 | 5.396 | 2746.310 |
| Iron | Fe (wt%) | 3.225 | 0.825 | 1.321 | 21.359 |
| Mercury | Hg (ppm) | 0.677 | 1.931 | 0.011 | 27.028 |
| Magnesium | Mg (wt%) | 0.902 | 0.237 | 0.248 | 2.784 |
| Manganese | Mn (ppm) | 819.754 | 171.481 | 364.857 | 3029.790 |
| Sodium | Na (wt%) | 1.653 | 0.314 | 0.624 | 2.681 |
| Phosphorus | P (wt%) | 0.088 | 0.022 | 0.031 | 0.210 |
| Lead | Pb (ppm) | 26.509 | 20.254 | 7.064 | 518.088 |
| Selenium | Se (ppm) | 0.656 | 0.713 | 0.101 | 4.927 |
| Titanium | Ti (wt%) | 0.404 | 0.118 | 0.157 | 2.169 |
| Zinc | Zn (ppm) | 100.368 | 38.561 | 43.137 | 547.302 |