| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 1.293 | 1.034 | 0.193 | 5.647 |
| Arsenic | As (ppm) | 3.255 | 1.594 | 1.090 | 8.727 |
| Calcium | Ca (wt%) | 0.100 | 0.091 | 0.010 | 0.436 |
| Copper | Cu (ppm) | 3.702 | 2.350 | 1.005 | 11.749 |
| Iron | Fe (wt%) | 0.799 | 0.415 | 0.182 | 2.179 |
| Mercury | Hg (ppm) | 0.014 | 0.006 | 0.010 | 0.038 |
| Magnesium | Mg (wt%) | 0.083 | 0.088 | 0.010 | 0.424 |
| Manganese | Mn (ppm) | 319.739 | 163.805 | 55.789 | 1098.240 |
| Sodium | Na (wt%) | 0.154 | 0.112 | 0.010 | 0.614 |
| Phosphorus | P (wt%) | 0.019 | 0.011 | 0.006 | 0.058 |
| Lead | Pb (ppm) | 10.621 | 3.990 | 2.996 | 24.414 |
| Selenium | Se (ppm) | 0.168 | 0.102 | 0.100 | 0.572 |
| Titanium | Ti (wt%) | 0.230 | 0.091 | 0.046 | 0.631 |
| Zinc | Zn (ppm) | 17.159 | 13.145 | 5.021 | 66.606 |