| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 2.717 | 0.986 | 0.326 | 6.152 |
| Arsenic | As (ppm) | 7.701 | 2.475 | 4.556 | 12.410 |
| Calcium | Ca (wt%) | 0.267 | 0.157 | 0.035 | 0.797 |
| Copper | Cu (ppm) | 11.543 | 4.136 | 5.002 | 20.940 |
| Iron | Fe (wt%) | 2.805 | 0.611 | 1.589 | 3.964 |
| Mercury | Hg (ppm) | 0.119 | 0.049 | 0.050 | 0.313 |
| Magnesium | Mg (wt%) | 0.268 | 0.181 | 0.030 | 0.875 |
| Manganese | Mn (ppm) | 467.652 | 158.691 | 194.056 | 828.773 |
| Sodium | Na (wt%) | 0.232 | 0.191 | 0.020 | 0.904 |
| Phosphorus | P (wt%) | 0.071 | 0.036 | 0.003 | 0.182 |
| Lead | Pb (ppm) | 60.062 | 24.805 | 13.230 | 133.123 |
| Selenium | Se (ppm) | 0.665 | 0.437 | 0.200 | 2.288 |
| Titanium | Ti (wt%) | 1.053 | 0.247 | 0.431 | 1.888 |
| Zinc | Zn (ppm) | 74.288 | 11.440 | 44.008 | 103.105 |