| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 7.365 | 1.011 | 4.643 | 9.156 |
| Arsenic | As (ppm) | 5.157 | 2.007 | 1.864 | 9.407 |
| Calcium | Ca (wt%) | 0.497 | 0.256 | 0.131 | 1.242 |
| Copper | Cu (ppm) | 24.679 | 3.055 | 15.960 | 32.678 |
| Iron | Fe (wt%) | 4.444 | 0.865 | 2.686 | 7.861 |
| Mercury | Hg (ppm) | 0.173 | 0.073 | 0.056 | 0.562 |
| Magnesium | Mg (wt%) | 0.516 | 0.136 | 0.314 | 1.044 |
| Manganese | Mn (ppm) | 1496.480 | 367.598 | 585.164 | 2164.910 |
| Sodium | Na (wt%) | 0.683 | 0.119 | 0.449 | 1.119 |
| Phosphorus | P (wt%) | 0.071 | 0.016 | 0.028 | 0.112 |
| Lead | Pb (ppm) | 30.435 | 4.967 | 20.904 | 45.325 |
| Selenium | Se (ppm) | 0.381 | 0.080 | 0.131 | 0.519 |
| Titanium | Ti (wt%) | 0.385 | 0.092 | 0.180 | 0.636 |
| Zinc | Zn (ppm) | 87.833 | 9.570 | 46.925 | 107.054 |