| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 3.505 | 0.711 | 2.163 | 5.775 |
| Arsenic | As (ppm) | 6.745 | 1.393 | 2.966 | 10.774 |
| Calcium | Ca (wt%) | 0.288 | 0.276 | 0.028 | 1.528 |
| Copper | Cu (ppm) | 11.689 | 7.713 | 1.004 | 41.496 |
| Iron | Fe (wt%) | 2.152 | 0.411 | 1.469 | 3.390 |
| Mercury | Hg (ppm) | 0.078 | 0.060 | 0.012 | 0.380 |
| Magnesium | Mg (wt%) | 0.400 | 0.125 | 0.245 | 0.873 |
| Manganese | Mn (ppm) | 846.122 | 240.627 | 340.036 | 1574.360 |
| Sodium | Na (wt%) | 0.401 | 0.178 | 0.080 | 0.914 |
| Phosphorus | P (wt%) | 0.041 | 0.011 | 0.023 | 0.095 |
| Lead | Pb (ppm) | 31.171 | 13.744 | 11.437 | 87.000 |
| Selenium | Se (ppm) | 0.286 | 0.119 | 0.104 | 0.709 |
| Titanium | Ti (wt%) | 0.240 | 0.035 | 0.168 | 0.367 |
| Zinc | Zn (ppm) | 82.173 | 25.439 | 47.943 | 153.023 |