| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 5.577 | 1.254 | 2.933 | 8.306 |
| Arsenic | As (ppm) | 3.870 | 1.161 | 1.642 | 6.684 |
| Calcium | Ca (wt%) | 1.173 | 0.568 | 0.196 | 2.668 |
| Copper | Cu (ppm) | 25.261 | 3.569 | 13.362 | 30.737 |
| Iron | Fe (wt%) | 5.225 | 0.790 | 2.824 | 6.764 |
| Mercury | Hg (ppm) | 0.089 | 0.021 | 0.046 | 0.139 |
| Magnesium | Mg (wt%) | 0.915 | 0.321 | 0.345 | 1.880 |
| Manganese | Mn (ppm) | 1100.220 | 160.364 | 636.691 | 1457.210 |
| Sodium | Na (wt%) | 0.458 | 0.057 | 0.327 | 0.586 |
| Phosphorus | P (wt%) | 0.033 | 0.011 | 0.015 | 0.052 |
| Lead | Pb (ppm) | 16.627 | 3.334 | 10.183 | 25.149 |
| Selenium | Se (ppm) | 0.344 | 0.085 | 0.202 | 0.558 |
| Titanium | Ti (wt%) | 0.677 | 0.132 | 0.437 | 1.008 |
| Zinc | Zn (ppm) | 72.944 | 9.954 | 49.400 | 98.934 |