| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 3.670 | 0.287 | 2.844 | 4.301 |
| Arsenic | As (ppm) | 1.905 | 0.483 | 1.320 | 3.819 |
| Calcium | Ca (wt%) | 0.233 | 0.099 | 0.118 | 0.579 |
| Copper | Cu (ppm) | 8.732 | 1.935 | 3.297 | 11.907 |
| Iron | Fe (wt%) | 2.904 | 0.517 | 1.976 | 3.842 |
| Mercury | Hg (ppm) | 0.050 | 0.016 | 0.020 | 0.094 |
| Magnesium | Mg (wt%) | 0.177 | 0.032 | 0.076 | 0.265 |
| Manganese | Mn (ppm) | 1055.210 | 426.066 | 522.999 | 2358.640 |
| Sodium | Na (wt%) | 0.228 | 0.080 | 0.135 | 0.468 |
| Phosphorus | P (wt%) | 0.035 | 0.007 | 0.021 | 0.053 |
| Lead | Pb (ppm) | 27.205 | 4.521 | 18.942 | 36.487 |
| Selenium | Se (ppm) | 0.145 | 0.032 | 0.102 | 0.197 |
| Titanium | Ti (wt%) | 0.682 | 0.099 | 0.362 | 0.830 |
| Zinc | Zn (ppm) | 43.555 | 2.966 | 33.932 | 49.656 |