| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 5.089 | 0.509 | 3.468 | 6.357 |
| Arsenic | As (ppm) | 10.166 | 1.520 | 4.982 | 13.617 |
| Calcium | Ca (wt%) | 1.282 | 0.773 | 0.461 | 7.543 |
| Copper | Cu (ppm) | 17.465 | 6.280 | 5.175 | 38.860 |
| Iron | Fe (wt%) | 3.346 | 0.415 | 2.041 | 4.247 |
| Mercury | Hg (ppm) | 0.048 | 0.018 | 0.020 | 0.117 |
| Magnesium | Mg (wt%) | 0.496 | 0.123 | 0.229 | 0.867 |
| Manganese | Mn (ppm) | 1094.240 | 363.010 | 335.733 | 3201.230 |
| Sodium | Na (wt%) | 0.588 | 0.053 | 0.505 | 0.800 |
| Phosphorus | P (wt%) | 0.060 | 0.008 | 0.040 | 0.077 |
| Lead | Pb (ppm) | 26.492 | 3.882 | 17.477 | 43.817 |
| Selenium | Se (ppm) | 0.504 | 0.114 | 0.153 | 0.873 |
| Titanium | Ti (wt%) | 0.294 | 0.043 | 0.178 | 0.398 |
| Zinc | Zn (ppm) | 87.592 | 19.255 | 52.247 | 181.105 |