| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 7.368 | 1.665 | 2.231 | 13.865 |
| Arsenic | As (ppm) | 6.217 | 2.074 | 1.298 | 18.713 |
| Calcium | Ca (wt%) | 0.398 | 0.352 | 0.057 | 2.326 |
| Copper | Cu (ppm) | 32.434 | 28.193 | 2.893 | 282.731 |
| Iron | Fe (wt%) | 4.161 | 0.797 | 2.094 | 7.765 |
| Mercury | Hg (ppm) | 0.047 | 0.018 | 0.011 | 0.159 |
| Magnesium | Mg (wt%) | 0.557 | 0.148 | 0.158 | 1.509 |
| Manganese | Mn (ppm) | 794.963 | 305.219 | 253.881 | 2269.400 |
| Sodium | Na (wt%) | 0.560 | 0.175 | 0.183 | 1.488 |
| Phosphorus | P (wt%) | 0.051 | 0.018 | 0.010 | 0.116 |
| Lead | Pb (ppm) | 27.902 | 14.389 | 5.400 | 147.957 |
| Selenium | Se (ppm) | 0.419 | 0.146 | 0.102 | 0.993 |
| Titanium | Ti (wt%) | 0.416 | 0.085 | 0.211 | 0.913 |
| Zinc | Zn (ppm) | 101.061 | 49.073 | 25.026 | 505.780 |