| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 5.108 | 0.278 | 4.028 | 5.875 |
| Arsenic | As (ppm) | 8.281 | 2.517 | 1.703 | 22.003 |
| Calcium | Ca (wt%) | 1.392 | 0.171 | 1.008 | 1.900 |
| Copper | Cu (ppm) | 12.938 | 2.818 | 6.921 | 22.600 |
| Iron | Fe (wt%) | 2.094 | 0.460 | 0.864 | 3.559 |
| Mercury | Hg (ppm) | 0.280 | 0.391 | 0.058 | 2.435 |
| Magnesium | Mg (wt%) | 0.582 | 0.107 | 0.237 | 0.902 |
| Manganese | Mn (ppm) | 681.762 | 142.110 | 418.674 | 1243.750 |
| Sodium | Na (wt%) | 1.483 | 0.091 | 1.284 | 1.685 |
| Phosphorus | P (wt%) | 0.061 | 0.012 | 0.031 | 0.102 |
| Lead | Pb (ppm) | 69.325 | 14.385 | 31.557 | 107.526 |
| Selenium | Se (ppm) | 0.166 | 0.068 | 0.101 | 0.548 |
| Titanium | Ti (wt%) | 0.524 | 0.148 | 0.339 | 0.957 |
| Zinc | Zn (ppm) | 56.209 | 11.012 | 16.665 | 86.722 |