| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 3.190 | 0.770 | 1.418 | 5.265 |
| Arsenic | As (ppm) | 6.539 | 2.185 | 2.133 | 17.278 |
| Calcium | Ca (wt%) | 0.155 | 0.123 | 0.028 | 0.660 |
| Copper | Cu (ppm) | 11.007 | 4.538 | 3.591 | 31.686 |
| Iron | Fe (wt%) | 1.814 | 0.504 | 0.722 | 3.649 |
| Mercury | Hg (ppm) | 0.042 | 0.017 | 0.011 | 0.132 |
| Magnesium | Mg (wt%) | 0.220 | 0.096 | 0.058 | 0.617 |
| Manganese | Mn (ppm) | 390.059 | 124.432 | 125.027 | 971.611 |
| Sodium | Na (wt%) | 0.319 | 0.226 | 0.060 | 0.910 |
| Phosphorus | P (wt%) | 0.030 | 0.009 | 0.012 | 0.068 |
| Lead | Pb (ppm) | 90.621 | 121.373 | 10.544 | 1043.680 |
| Selenium | Se (ppm) | 0.454 | 0.292 | 0.100 | 2.009 |
| Titanium | Ti (wt%) | 0.218 | 0.033 | 0.145 | 0.298 |
| Zinc | Zn (ppm) | 51.702 | 19.451 | 18.822 | 123.941 |