| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 4.239 | 0.708 | 1.831 | 6.124 |
| Arsenic | As (ppm) | 10.813 | 2.503 | 3.264 | 17.337 |
| Calcium | Ca (wt%) | 0.434 | 0.545 | 0.096 | 5.797 |
| Copper | Cu (ppm) | 15.089 | 4.667 | 6.062 | 33.689 |
| Iron | Fe (wt%) | 2.918 | 0.556 | 1.138 | 4.470 |
| Mercury | Hg (ppm) | 2.711 | 1.083 | 0.178 | 5.317 |
| Magnesium | Mg (wt%) | 0.313 | 0.077 | 0.146 | 0.662 |
| Manganese | Mn (ppm) | 726.066 | 160.489 | 266.809 | 1284.790 |
| Sodium | Na (wt%) | 0.127 | 0.037 | 0.046 | 0.268 |
| Phosphorus | P (wt%) | 0.037 | 0.008 | 0.012 | 0.057 |
| Lead | Pb (ppm) | 31.084 | 5.585 | 12.191 | 52.116 |
| Selenium | Se (ppm) | 0.537 | 0.257 | 0.104 | 1.432 |
| Titanium | Ti (wt%) | 0.265 | 0.035 | 0.175 | 0.357 |
| Zinc | Zn (ppm) | 99.870 | 30.796 | 36.466 | 202.282 |