| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 4.531 | 0.230 | 3.585 | 5.326 |
| Arsenic | As (ppm) | 6.969 | 1.000 | 3.094 | 10.308 |
| Calcium | Ca (wt%) | 1.758 | 0.612 | 0.593 | 4.386 |
| Copper | Cu (ppm) | 13.251 | 2.087 | 6.000 | 19.688 |
| Iron | Fe (wt%) | 2.877 | 0.213 | 2.259 | 3.921 |
| Mercury | Hg (ppm) | 0.069 | 0.019 | 0.023 | 0.135 |
| Magnesium | Mg (wt%) | 0.636 | 0.079 | 0.481 | 1.002 |
| Manganese | Mn (ppm) | 658.752 | 120.677 | 426.367 | 1144.060 |
| Sodium | Na (wt%) | 0.722 | 0.114 | 0.515 | 1.039 |
| Phosphorus | P (wt%) | 0.054 | 0.005 | 0.036 | 0.065 |
| Lead | Pb (ppm) | 55.579 | 22.375 | 18.347 | 148.016 |
| Selenium | Se (ppm) | 0.185 | 0.046 | 0.100 | 0.300 |
| Titanium | Ti (wt%) | 0.348 | 0.059 | 0.224 | 0.653 |
| Zinc | Zn (ppm) | 102.875 | 42.150 | 58.265 | 301.286 |