| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 5.874 | 1.638 | 0.013 | 8.118 |
| Arsenic | As (ppm) | 5.342 | 1.811 | 2.006 | 11.715 |
| Calcium | Ca (wt%) | 1.709 | 1.197 | 0.247 | 6.137 |
| Copper | Cu (ppm) | 29.170 | 6.581 | 16.780 | 53.464 |
| Iron | Fe (wt%) | 4.950 | 0.897 | 3.047 | 7.258 |
| Mercury | Hg (ppm) | 0.199 | 0.073 | 0.071 | 0.427 |
| Magnesium | Mg (wt%) | 0.931 | 0.214 | 0.472 | 1.655 |
| Manganese | Mn (ppm) | 1244.850 | 335.483 | 601.329 | 2382.360 |
| Sodium | Na (wt%) | 0.669 | 0.180 | 0.337 | 1.242 |
| Phosphorus | P (wt%) | 0.082 | 0.026 | 0.050 | 0.183 |
| Lead | Pb (ppm) | 23.663 | 4.387 | 12.029 | 40.545 |
| Selenium | Se (ppm) | 0.333 | 0.073 | 0.113 | 0.549 |
| Titanium | Ti (wt%) | 0.724 | 0.222 | 0.372 | 1.540 |
| Zinc | Zn (ppm) | 97.324 | 14.707 | 74.547 | 145.893 |