| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 1.875 | 0.679 | 0.722 | 4.700 |
| Arsenic | As (ppm) | 2.372 | 0.378 | 1.309 | 3.702 |
| Calcium | Ca (wt%) | 0.044 | 0.025 | 0.009 | 0.144 |
| Copper | Cu (ppm) | 4.330 | 1.679 | 1.712 | 10.472 |
| Iron | Fe (wt%) | 0.884 | 0.213 | 0.423 | 1.782 |
| Mercury | Hg (ppm) | 0.024 | 0.009 | 0.010 | 0.054 |
| Magnesium | Mg (wt%) | 0.037 | 0.017 | 0.014 | 0.098 |
| Manganese | Mn (ppm) | 99.604 | 36.518 | 39.123 | 293.772 |
| Sodium | Na (wt%) | 0.007 | 0.003 | 0.003 | 0.019 |
| Phosphorus | P (wt%) | 0.024 | 0.012 | 0.008 | 0.082 |
| Lead | Pb (ppm) | 17.795 | 4.131 | 8.300 | 30.875 |
| Selenium | Se (ppm) | 0.282 | 0.072 | 0.140 | 0.496 |
| Titanium | Ti (wt%) | 0.359 | 0.044 | 0.221 | 0.483 |
| Zinc | Zn (ppm) | 17.655 | 7.229 | 8.173 | 57.817 |