| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 6.103 | 0.185 | 5.523 | 6.888 |
| Arsenic | As (ppm) | 4.567 | 3.123 | 0.497 | 21.695 |
| Calcium | Ca (wt%) | 2.039 | 0.319 | 1.371 | 3.193 |
| Copper | Cu (ppm) | 18.284 | 4.222 | 9.695 | 52.555 |
| Iron | Fe (wt%) | 3.705 | 0.371 | 2.778 | 5.149 |
| Mercury | Hg (ppm) | 0.110 | 0.046 | 0.037 | 0.379 |
| Magnesium | Mg (wt%) | 0.918 | 0.182 | 0.491 | 1.450 |
| Manganese | Mn (ppm) | 1674.790 | 300.359 | 1122.460 | 2687.830 |
| Sodium | Na (wt%) | 1.577 | 0.089 | 1.314 | 1.829 |
| Phosphorus | P (wt%) | 0.114 | 0.023 | 0.069 | 0.252 |
| Lead | Pb (ppm) | 83.443 | 74.760 | 24.326 | 585.259 |
| Selenium | Se (ppm) | 0.495 | 0.168 | 0.147 | 1.867 |
| Titanium | Ti (wt%) | 0.835 | 0.156 | 0.447 | 1.416 |
| Zinc | Zn (ppm) | 93.272 | 16.610 | 46.177 | 156.382 |