| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 3.350 | 0.546 | 2.097 | 4.926 |
| Arsenic | As (ppm) | 5.957 | 1.952 | 2.222 | 10.486 |
| Calcium | Ca (wt%) | 0.336 | 0.145 | 0.102 | 0.813 |
| Copper | Cu (ppm) | 6.162 | 0.600 | 5.015 | 8.511 |
| Iron | Fe (wt%) | 2.168 | 0.561 | 0.929 | 3.700 |
| Mercury | Hg (ppm) | 0.038 | 0.021 | 0.010 | 0.139 |
| Magnesium | Mg (wt%) | 0.213 | 0.050 | 0.095 | 0.299 |
| Manganese | Mn (ppm) | 1037.980 | 796.253 | 216.368 | 4992.540 |
| Sodium | Na (wt%) | 0.273 | 0.069 | 0.195 | 0.454 |
| Phosphorus | P (wt%) | 0.045 | 0.013 | 0.015 | 0.104 |
| Lead | Pb (ppm) | 22.371 | 4.875 | 13.185 | 39.781 |
| Selenium | Se (ppm) | 0.393 | 0.128 | 0.101 | 0.795 |
| Titanium | Ti (wt%) | 0.233 | 0.021 | 0.167 | 0.295 |
| Zinc | Zn (ppm) | 52.972 | 11.992 | 21.303 | 89.457 |