| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 7.336 | 0.431 | 6.373 | 8.630 |
| Arsenic | As (ppm) | 5.014 | 1.303 | 1.658 | 10.895 |
| Calcium | Ca (wt%) | 2.147 | 0.869 | 0.885 | 4.459 |
| Copper | Cu (ppm) | 37.775 | 22.611 | 13.771 | 99.222 |
| Iron | Fe (wt%) | 5.833 | 1.489 | 3.661 | 9.422 |
| Mercury | Hg (ppm) | 0.034 | 0.014 | 0.010 | 0.082 |
| Magnesium | Mg (wt%) | 1.289 | 0.624 | 0.658 | 3.170 |
| Manganese | Mn (ppm) | 995.084 | 166.564 | 594.440 | 1345.900 |
| Sodium | Na (wt%) | 1.378 | 0.230 | 0.829 | 1.825 |
| Phosphorus | P (wt%) | 0.098 | 0.025 | 0.047 | 0.142 |
| Lead | Pb (ppm) | 16.290 | 3.318 | 7.287 | 22.611 |
| Selenium | Se (ppm) | 0.232 | 0.073 | 0.100 | 0.398 |
| Titanium | Ti (wt%) | 0.780 | 0.083 | 0.560 | 1.049 |
| Zinc | Zn (ppm) | 118.617 | 19.505 | 89.595 | 188.052 |