| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 6.152 | 1.149 | 3.788 | 8.796 |
| Arsenic | As (ppm) | 16.950 | 36.953 | 2.895 | 312.140 |
| Calcium | Ca (wt%) | 2.538 | 2.214 | 0.230 | 8.942 |
| Copper | Cu (ppm) | 26.793 | 10.916 | 12.250 | 113.699 |
| Iron | Fe (wt%) | 2.795 | 0.919 | 1.660 | 6.576 |
| Mercury | Hg (ppm) | 0.027 | 0.009 | 0.010 | 0.074 |
| Magnesium | Mg (wt%) | 0.656 | 0.394 | 0.230 | 2.224 |
| Manganese | Mn (ppm) | 529.002 | 216.224 | 162.000 | 1267.240 |
| Sodium | Na (wt%) | 1.181 | 0.384 | 0.438 | 2.575 |
| Phosphorus | P (wt%) | 0.057 | 0.032 | 0.015 | 0.204 |
| Lead | Pb (ppm) | 34.012 | 6.268 | 23.055 | 64.699 |
| Selenium | Se (ppm) | 0.134 | 0.047 | 0.100 | 0.496 |
| Titanium | Ti (wt%) | 0.321 | 0.111 | 0.198 | 0.789 |
| Zinc | Zn (ppm) | 60.154 | 18.227 | 31.000 | 138.328 |