| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 2.908 | 0.375 | 2.178 | 4.626 |
| Arsenic | As (ppm) | 1.391 | 0.187 | 0.970 | 1.986 |
| Calcium | Ca (wt%) | 0.409 | 0.217 | 0.127 | 0.999 |
| Copper | Cu (ppm) | 7.431 | 1.649 | 5.119 | 13.454 |
| Iron | Fe (wt%) | 2.581 | 0.447 | 1.375 | 3.886 |
| Mercury | Hg (ppm) | 0.022 | 0.007 | 0.013 | 0.045 |
| Magnesium | Mg (wt%) | 0.092 | 0.033 | 0.022 | 0.170 |
| Manganese | Mn (ppm) | 816.798 | 160.638 | 440.747 | 1208.360 |
| Sodium | Na (wt%) | 0.424 | 0.107 | 0.177 | 0.622 |
| Phosphorus | P (wt%) | 0.048 | 0.017 | 0.018 | 0.116 |
| Lead | Pb (ppm) | 33.554 | 6.964 | 18.151 | 48.516 |
| Selenium | Se (ppm) | 0.206 | 0.044 | 0.104 | 0.329 |
| Titanium | Ti (wt%) | 0.682 | 0.109 | 0.403 | 0.857 |
| Zinc | Zn (ppm) | 42.156 | 8.711 | 21.785 | 63.102 |