| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 8.770 | 1.058 | 6.073 | 11.656 |
| Arsenic | As (ppm) | 9.034 | 8.738 | 1.694 | 51.497 |
| Calcium | Ca (wt%) | 2.121 | 0.738 | 0.281 | 4.425 |
| Copper | Cu (ppm) | 56.903 | 14.017 | 24.330 | 117.072 |
| Iron | Fe (wt%) | 5.767 | 0.897 | 2.819 | 8.207 |
| Mercury | Hg (ppm) | 0.038 | 0.020 | 0.010 | 0.119 |
| Magnesium | Mg (wt%) | 1.749 | 0.827 | 0.498 | 6.011 |
| Manganese | Mn (ppm) | 1359.230 | 429.701 | 704.129 | 3550.800 |
| Sodium | Na (wt%) | 1.390 | 0.536 | 0.138 | 2.667 |
| Phosphorus | P (wt%) | 0.083 | 0.022 | 0.039 | 0.181 |
| Lead | Pb (ppm) | 13.340 | 4.011 | 2.070 | 24.918 |
| Selenium | Se (ppm) | 0.246 | 0.122 | 0.100 | 0.979 |
| Titanium | Ti (wt%) | 0.550 | 0.106 | 0.294 | 0.863 |
| Zinc | Zn (ppm) | 126.098 | 36.857 | 62.683 | 323.829 |