| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 5.190 | 1.365 | 2.999 | 8.220 |
| Arsenic | As (ppm) | 7.071 | 1.526 | 4.203 | 11.310 |
| Calcium | Ca (wt%) | 0.342 | 0.052 | 0.192 | 0.466 |
| Copper | Cu (ppm) | 15.159 | 5.988 | 7.510 | 27.706 |
| Iron | Fe (wt%) | 2.187 | 0.689 | 1.102 | 3.959 |
| Mercury | Hg (ppm) | 0.038 | 0.006 | 0.030 | 0.059 |
| Magnesium | Mg (wt%) | 0.404 | 0.211 | 0.157 | 0.911 |
| Manganese | Mn (ppm) | 499.958 | 142.957 | 165.274 | 826.045 |
| Sodium | Na (wt%) | 0.618 | 0.107 | 0.268 | 0.879 |
| Phosphorus | P (wt%) | 0.041 | 0.015 | 0.017 | 0.082 |
| Lead | Pb (ppm) | 18.515 | 2.510 | 15.004 | 25.792 |
| Selenium | Se (ppm) | 0.395 | 0.157 | 0.100 | 0.782 |
| Titanium | Ti (wt%) | 0.332 | 0.019 | 0.287 | 0.385 |
| Zinc | Zn (ppm) | 57.844 | 22.276 | 28.797 | 99.463 |