| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 2.510 | 1.010 | 0.437 | 6.019 |
| Arsenic | As (ppm) | 5.683 | 3.308 | 0.960 | 24.842 |
| Calcium | Ca (wt%) | 2.416 | 3.019 | 0.020 | 18.813 |
| Copper | Cu (ppm) | 7.980 | 3.281 | 1.347 | 21.671 |
| Iron | Fe (wt%) | 1.729 | 0.768 | 0.358 | 5.232 |
| Mercury | Hg (ppm) | 0.027 | 0.016 | 0.010 | 0.138 |
| Magnesium | Mg (wt%) | 0.184 | 0.100 | 0.021 | 0.810 |
| Manganese | Mn (ppm) | 404.627 | 188.037 | 82.616 | 1339.540 |
| Sodium | Na (wt%) | 0.109 | 0.032 | 0.027 | 0.253 |
| Phosphorus | P (wt%) | 0.036 | 0.017 | 0.006 | 0.115 |
| Lead | Pb (ppm) | 21.969 | 5.069 | 6.492 | 41.557 |
| Selenium | Se (ppm) | 0.352 | 0.149 | 0.102 | 1.011 |
| Titanium | Ti (wt%) | 0.522 | 0.089 | 0.284 | 0.856 |
| Zinc | Zn (ppm) | 36.208 | 16.082 | 8.626 | 109.324 |