| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 8.221 | 0.730 | 3.654 | 10.009 |
| Arsenic | As (ppm) | 5.733 | 4.139 | 1.735 | 24.325 |
| Calcium | Ca (wt%) | 2.511 | 0.413 | 1.451 | 4.127 |
| Copper | Cu (ppm) | 29.051 | 11.562 | 6.624 | 104.963 |
| Iron | Fe (wt%) | 3.927 | 0.794 | 1.661 | 6.750 |
| Mercury | Hg (ppm) | 0.019 | 0.014 | 0.010 | 0.124 |
| Magnesium | Mg (wt%) | 2.024 | 1.848 | 0.629 | 14.029 |
| Manganese | Mn (ppm) | 778.168 | 177.618 | 362.076 | 1536.590 |
| Sodium | Na (wt%) | 2.383 | 0.383 | 1.053 | 3.553 |
| Phosphorus | P (wt%) | 0.088 | 0.024 | 0.025 | 0.188 |
| Lead | Pb (ppm) | 8.784 | 4.039 | 2.383 | 35.868 |
| Selenium | Se (ppm) | 0.137 | 0.058 | 0.100 | 0.393 |
| Titanium | Ti (wt%) | 0.464 | 0.081 | 0.230 | 0.817 |
| Zinc | Zn (ppm) | 90.704 | 23.946 | 39.990 | 241.638 |