| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 6.157 | 0.363 | 4.965 | 8.110 |
| Arsenic | As (ppm) | 2.684 | 1.439 | 0.773 | 12.059 |
| Calcium | Ca (wt%) | 2.253 | 0.426 | 1.318 | 3.709 |
| Copper | Cu (ppm) | 15.428 | 3.671 | 8.299 | 29.057 |
| Iron | Fe (wt%) | 3.302 | 0.411 | 2.204 | 4.777 |
| Mercury | Hg (ppm) | 0.053 | 0.014 | 0.021 | 0.121 |
| Magnesium | Mg (wt%) | 0.993 | 0.280 | 0.498 | 2.008 |
| Manganese | Mn (ppm) | 1330.080 | 358.947 | 701.875 | 3711.870 |
| Sodium | Na (wt%) | 1.626 | 0.190 | 0.900 | 1.929 |
| Phosphorus | P (wt%) | 0.099 | 0.018 | 0.051 | 0.159 |
| Lead | Pb (ppm) | 33.806 | 6.976 | 20.285 | 58.831 |
| Selenium | Se (ppm) | 0.357 | 0.095 | 0.113 | 0.743 |
| Titanium | Ti (wt%) | 0.770 | 0.144 | 0.434 | 1.175 |
| Zinc | Zn (ppm) | 81.422 | 19.609 | 40.578 | 209.410 |