| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 2.280 | 0.606 | 1.249 | 4.974 |
| Arsenic | As (ppm) | 4.670 | 1.570 | 2.170 | 13.803 |
| Calcium | Ca (wt%) | 0.191 | 0.302 | 0.021 | 2.038 |
| Copper | Cu (ppm) | 8.598 | 1.678 | 5.232 | 16.334 |
| Iron | Fe (wt%) | 1.482 | 0.429 | 0.728 | 3.000 |
| Mercury | Hg (ppm) | 0.025 | 0.008 | 0.010 | 0.062 |
| Magnesium | Mg (wt%) | 0.135 | 0.043 | 0.068 | 0.303 |
| Manganese | Mn (ppm) | 411.393 | 154.649 | 81.813 | 1090.890 |
| Sodium | Na (wt%) | 0.119 | 0.045 | 0.017 | 0.235 |
| Phosphorus | P (wt%) | 0.030 | 0.012 | 0.010 | 0.069 |
| Lead | Pb (ppm) | 25.206 | 26.492 | 8.289 | 178.344 |
| Selenium | Se (ppm) | 0.405 | 0.117 | 0.208 | 0.890 |
| Titanium | Ti (wt%) | 0.305 | 0.124 | 0.132 | 0.632 |
| Zinc | Zn (ppm) | 32.178 | 11.162 | 17.593 | 69.279 |