| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 3.096 | 0.748 | 1.407 | 5.812 |
| Arsenic | As (ppm) | 1.664 | 0.552 | 0.368 | 3.158 |
| Calcium | Ca (wt%) | 0.365 | 0.248 | 0.013 | 1.342 |
| Copper | Cu (ppm) | 7.947 | 2.756 | 2.550 | 21.340 |
| Iron | Fe (wt%) | 2.300 | 0.949 | 0.759 | 6.427 |
| Mercury | Hg (ppm) | 0.782 | 1.341 | 0.016 | 8.034 |
| Magnesium | Mg (wt%) | 0.194 | 0.107 | 0.022 | 0.651 |
| Manganese | Mn (ppm) | 609.755 | 296.830 | 81.346 | 1811.450 |
| Sodium | Na (wt%) | 0.234 | 0.130 | 0.007 | 0.642 |
| Phosphorus | P (wt%) | 0.023 | 0.010 | 0.007 | 0.071 |
| Lead | Pb (ppm) | 24.000 | 5.229 | 7.280 | 53.975 |
| Selenium | Se (ppm) | 0.181 | 0.034 | 0.101 | 0.299 |
| Titanium | Ti (wt%) | 0.636 | 0.121 | 0.301 | 1.270 |
| Zinc | Zn (ppm) | 28.605 | 8.981 | 11.005 | 60.775 |