| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 6.044 | 0.396 | 4.994 | 7.094 |
| Arsenic | As (ppm) | 5.265 | 2.010 | 1.441 | 11.287 |
| Calcium | Ca (wt%) | 1.130 | 0.298 | 0.667 | 2.075 |
| Copper | Cu (ppm) | 10.171 | 3.612 | 1.519 | 23.372 |
| Iron | Fe (wt%) | 3.352 | 0.882 | 1.731 | 6.421 |
| Mercury | Hg (ppm) | 0.029 | 0.012 | 0.010 | 0.077 |
| Magnesium | Mg (wt%) | 0.641 | 0.062 | 0.514 | 0.827 |
| Manganese | Mn (ppm) | 891.862 | 317.549 | 325.564 | 2051.170 |
| Sodium | Na (wt%) | 1.056 | 0.189 | 0.692 | 1.555 |
| Phosphorus | P (wt%) | 0.059 | 0.013 | 0.021 | 0.102 |
| Lead | Pb (ppm) | 20.438 | 4.446 | 11.157 | 36.351 |
| Selenium | Se (ppm) | 0.185 | 0.069 | 0.100 | 0.343 |
| Titanium | Ti (wt%) | 0.568 | 0.180 | 0.304 | 1.225 |
| Zinc | Zn (ppm) | 53.764 | 14.254 | 21.674 | 86.921 |