| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 6.161 | 0.644 | 4.672 | 7.832 |
| Arsenic | As (ppm) | 2.708 | 3.010 | 0.354 | 22.506 |
| Calcium | Ca (wt%) | 2.386 | 0.417 | 1.282 | 4.008 |
| Copper | Cu (ppm) | 1.913 | 2.682 | 1.000 | 23.739 |
| Iron | Fe (wt%) | 6.275 | 1.411 | 2.605 | 10.032 |
| Mercury | Hg (ppm) | 0.043 | 0.039 | 0.011 | 0.270 |
| Magnesium | Mg (wt%) | 0.934 | 0.258 | 0.337 | 1.604 |
| Manganese | Mn (ppm) | 1213.060 | 234.901 | 448.552 | 2101.010 |
| Sodium | Na (wt%) | 1.671 | 0.160 | 1.141 | 2.087 |
| Phosphorus | P (wt%) | 0.062 | 0.018 | 0.026 | 0.120 |
| Lead | Pb (ppm) | 35.235 | 15.685 | 21.018 | 129.574 |
| Selenium | Se (ppm) | 0.182 | 0.139 | 0.100 | 0.998 |
| Titanium | Ti (wt%) | 1.050 | 0.139 | 0.481 | 1.462 |
| Zinc | Zn (ppm) | 102.457 | 13.243 | 65.632 | 150.701 |