| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 8.553 | 0.621 | 6.110 | 11.290 |
| Arsenic | As (ppm) | 7.808 | 5.143 | 1.296 | 40.550 |
| Calcium | Ca (wt%) | 3.275 | 1.317 | 0.718 | 11.235 |
| Copper | Cu (ppm) | 29.500 | 11.885 | 4.203 | 101.296 |
| Iron | Fe (wt%) | 4.596 | 1.131 | 0.923 | 14.447 |
| Mercury | Hg (ppm) | 0.029 | 0.042 | 0.010 | 0.576 |
| Magnesium | Mg (wt%) | 1.115 | 0.427 | 0.155 | 3.608 |
| Manganese | Mn (ppm) | 1139.170 | 362.723 | 231.525 | 4989.950 |
| Sodium | Na (wt%) | 2.239 | 0.276 | 0.894 | 3.494 |
| Phosphorus | P (wt%) | 0.098 | 0.035 | 0.021 | 0.254 |
| Lead | Pb (ppm) | 19.273 | 16.451 | 2.277 | 418.498 |
| Selenium | Se (ppm) | 0.160 | 0.122 | 0.100 | 1.526 |
| Titanium | Ti (wt%) | 0.595 | 0.178 | 0.097 | 1.909 |
| Zinc | Zn (ppm) | 94.224 | 67.995 | 18.532 | 2301.280 |