| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 2.087 | 0.541 | 0.859 | 3.787 |
| Arsenic | As (ppm) | 2.762 | 0.636 | 1.202 | 5.048 |
| Calcium | Ca (wt%) | 0.103 | 0.075 | 0.033 | 0.489 |
| Copper | Cu (ppm) | 5.100 | 1.010 | 2.501 | 8.475 |
| Iron | Fe (wt%) | 0.990 | 0.287 | 0.455 | 1.905 |
| Mercury | Hg (ppm) | 0.033 | 0.012 | 0.010 | 0.073 |
| Magnesium | Mg (wt%) | 0.037 | 0.007 | 0.021 | 0.054 |
| Manganese | Mn (ppm) | 242.258 | 64.589 | 79.494 | 462.221 |
| Sodium | Na (wt%) | 0.018 | 0.017 | 0.003 | 0.099 |
| Phosphorus | P (wt%) | 0.021 | 0.004 | 0.011 | 0.034 |
| Lead | Pb (ppm) | 19.538 | 5.711 | 8.373 | 44.616 |
| Selenium | Se (ppm) | 0.261 | 0.069 | 0.106 | 0.476 |
| Titanium | Ti (wt%) | 0.347 | 0.055 | 0.206 | 0.507 |
| Zinc | Zn (ppm) | 27.305 | 12.187 | 12.410 | 86.355 |