| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 1.720 | 0.664 | 0.485 | 5.312 |
| Arsenic | As (ppm) | 3.936 | 1.497 | 1.899 | 13.070 |
| Calcium | Ca (wt%) | 0.068 | 0.034 | 0.016 | 0.210 |
| Copper | Cu (ppm) | 6.551 | 1.802 | 2.414 | 13.668 |
| Iron | Fe (wt%) | 0.669 | 0.267 | 0.346 | 2.090 |
| Mercury | Hg (ppm) | 0.068 | 0.043 | 0.019 | 0.262 |
| Magnesium | Mg (wt%) | 0.042 | 0.015 | 0.012 | 0.091 |
| Manganese | Mn (ppm) | 98.354 | 30.750 | 55.602 | 257.576 |
| Sodium | Na (wt%) | 0.014 | 0.005 | 0.005 | 0.036 |
| Phosphorus | P (wt%) | 0.045 | 0.013 | 0.018 | 0.095 |
| Lead | Pb (ppm) | 51.854 | 119.073 | 9.450 | 997.972 |
| Selenium | Se (ppm) | 0.265 | 0.086 | 0.130 | 0.628 |
| Titanium | Ti (wt%) | 0.505 | 0.045 | 0.408 | 0.642 |
| Zinc | Zn (ppm) | 20.193 | 9.083 | 7.453 | 69.748 |