| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 2.448 | 0.811 | 1.018 | 4.191 |
| Arsenic | As (ppm) | 3.027 | 0.859 | 1.247 | 5.126 |
| Calcium | Ca (wt%) | 0.788 | 0.532 | 0.160 | 3.304 |
| Copper | Cu (ppm) | 9.631 | 10.156 | 1.093 | 44.842 |
| Iron | Fe (wt%) | 1.427 | 0.414 | 0.575 | 2.589 |
| Mercury | Hg (ppm) | 0.506 | 1.105 | 0.020 | 6.669 |
| Magnesium | Mg (wt%) | 0.355 | 0.160 | 0.122 | 0.822 |
| Manganese | Mn (ppm) | 445.192 | 147.542 | 147.252 | 856.428 |
| Sodium | Na (wt%) | 0.587 | 0.231 | 0.181 | 1.027 |
| Phosphorus | P (wt%) | 0.040 | 0.016 | 0.014 | 0.090 |
| Lead | Pb (ppm) | 18.512 | 12.742 | 7.167 | 61.796 |
| Selenium | Se (ppm) | 0.236 | 0.119 | 0.100 | 0.969 |
| Titanium | Ti (wt%) | 0.304 | 0.095 | 0.116 | 0.527 |
| Zinc | Zn (ppm) | 80.342 | 63.382 | 31.612 | 306.975 |