| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 5.444 | 0.162 | 4.972 | 5.876 |
| Arsenic | As (ppm) | 7.069 | 7.146 | 1.168 | 41.236 |
| Calcium | Ca (wt%) | 1.610 | 0.234 | 0.757 | 2.767 |
| Copper | Cu (ppm) | 11.105 | 2.425 | 3.738 | 20.561 |
| Iron | Fe (wt%) | 2.574 | 0.720 | 1.396 | 4.707 |
| Mercury | Hg (ppm) | 0.073 | 0.016 | 0.035 | 0.144 |
| Magnesium | Mg (wt%) | 0.565 | 0.152 | 0.273 | 0.887 |
| Manganese | Mn (ppm) | 856.058 | 239.182 | 490.001 | 1741.860 |
| Sodium | Na (wt%) | 1.362 | 0.188 | 0.968 | 1.854 |
| Phosphorus | P (wt%) | 0.067 | 0.011 | 0.028 | 0.107 |
| Lead | Pb (ppm) | 40.343 | 6.854 | 29.213 | 72.957 |
| Selenium | Se (ppm) | 0.528 | 0.161 | 0.301 | 1.334 |
| Titanium | Ti (wt%) | 0.504 | 0.138 | 0.246 | 1.014 |
| Zinc | Zn (ppm) | 54.013 | 11.460 | 26.728 | 93.838 |