| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 6.571 | 1.507 | 3.706 | 10.201 |
| Arsenic | As (ppm) | 1.825 | 0.952 | 0.315 | 9.167 |
| Calcium | Ca (wt%) | 3.191 | 1.142 | 1.013 | 5.272 |
| Copper | Cu (ppm) | 2.625 | 3.288 | 1.000 | 18.103 |
| Iron | Fe (wt%) | 5.532 | 1.819 | 1.825 | 9.416 |
| Mercury | Hg (ppm) | 0.036 | 0.019 | 0.010 | 0.105 |
| Magnesium | Mg (wt%) | 0.988 | 0.342 | 0.352 | 2.182 |
| Manganese | Mn (ppm) | 1086.600 | 389.064 | 342.842 | 2191.650 |
| Sodium | Na (wt%) | 1.561 | 0.318 | 0.953 | 2.338 |
| Phosphorus | P (wt%) | 0.081 | 0.043 | 0.025 | 0.363 |
| Lead | Pb (ppm) | 24.182 | 6.232 | 8.369 | 47.078 |
| Selenium | Se (ppm) | 0.144 | 0.063 | 0.100 | 0.395 |
| Titanium | Ti (wt%) | 0.952 | 0.241 | 0.471 | 1.485 |
| Zinc | Zn (ppm) | 75.781 | 30.740 | 25.502 | 212.758 |