| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 4.024 | 0.549 | 2.471 | 4.933 |
| Arsenic | As (ppm) | 4.081 | 1.181 | 1.774 | 8.061 |
| Calcium | Ca (wt%) | 0.547 | 0.326 | 0.091 | 1.586 |
| Copper | Cu (ppm) | 9.473 | 5.252 | 2.130 | 37.575 |
| Iron | Fe (wt%) | 2.591 | 0.766 | 1.077 | 6.953 |
| Mercury | Hg (ppm) | 0.046 | 0.014 | 0.012 | 0.098 |
| Magnesium | Mg (wt%) | 0.542 | 0.160 | 0.198 | 1.100 |
| Manganese | Mn (ppm) | 1091.120 | 627.060 | 199.066 | 4327.980 |
| Sodium | Na (wt%) | 0.803 | 0.165 | 0.422 | 1.160 |
| Phosphorus | P (wt%) | 0.050 | 0.012 | 0.026 | 0.087 |
| Lead | Pb (ppm) | 27.203 | 6.128 | 11.925 | 51.172 |
| Selenium | Se (ppm) | 0.331 | 0.106 | 0.117 | 0.770 |
| Titanium | Ti (wt%) | 0.363 | 0.117 | 0.195 | 0.867 |
| Zinc | Zn (ppm) | 97.436 | 33.938 | 50.711 | 260.618 |