| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 7.846 | 0.658 | 5.750 | 11.152 |
| Arsenic | As (ppm) | 8.336 | 1.848 | 2.414 | 16.284 |
| Calcium | Ca (wt%) | 0.835 | 0.431 | 0.170 | 3.168 |
| Copper | Cu (ppm) | 46.809 | 9.659 | 19.120 | 89.494 |
| Iron | Fe (wt%) | 4.529 | 0.661 | 2.455 | 7.156 |
| Mercury | Hg (ppm) | 0.628 | 1.269 | 0.040 | 9.320 |
| Magnesium | Mg (wt%) | 1.553 | 0.647 | 0.357 | 5.539 |
| Manganese | Mn (ppm) | 965.925 | 388.719 | 222.994 | 3553.040 |
| Sodium | Na (wt%) | 1.429 | 0.274 | 0.396 | 1.960 |
| Phosphorus | P (wt%) | 0.077 | 0.022 | 0.044 | 0.187 |
| Lead | Pb (ppm) | 30.064 | 23.056 | 11.864 | 136.904 |
| Selenium | Se (ppm) | 0.267 | 0.109 | 0.105 | 0.658 |
| Titanium | Ti (wt%) | 0.456 | 0.143 | 0.210 | 1.153 |
| Zinc | Zn (ppm) | 104.332 | 16.048 | 73.583 | 179.837 |