| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 3.780 | 0.729 | 2.075 | 6.002 |
| Arsenic | As (ppm) | 10.116 | 2.310 | 4.718 | 16.289 |
| Calcium | Ca (wt%) | 0.125 | 0.036 | 0.037 | 0.192 |
| Copper | Cu (ppm) | 10.767 | 2.727 | 7.093 | 18.468 |
| Iron | Fe (wt%) | 2.522 | 0.467 | 1.430 | 4.013 |
| Mercury | Hg (ppm) | 0.040 | 0.012 | 0.012 | 0.079 |
| Magnesium | Mg (wt%) | 0.355 | 0.129 | 0.116 | 0.739 |
| Manganese | Mn (ppm) | 791.088 | 137.772 | 466.113 | 1105.990 |
| Sodium | Na (wt%) | 0.310 | 0.157 | 0.061 | 0.664 |
| Phosphorus | P (wt%) | 0.044 | 0.012 | 0.015 | 0.077 |
| Lead | Pb (ppm) | 21.481 | 3.802 | 14.403 | 34.246 |
| Selenium | Se (ppm) | 0.244 | 0.069 | 0.108 | 0.547 |
| Titanium | Ti (wt%) | 0.272 | 0.030 | 0.198 | 0.343 |
| Zinc | Zn (ppm) | 72.229 | 11.186 | 33.135 | 104.784 |