| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 9.171 | 0.738 | 5.716 | 11.973 |
| Arsenic | As (ppm) | 2.375 | 0.528 | 0.767 | 3.661 |
| Calcium | Ca (wt%) | 2.619 | 0.572 | 0.441 | 4.569 |
| Copper | Cu (ppm) | 36.770 | 11.108 | 11.733 | 86.919 |
| Iron | Fe (wt%) | 4.699 | 1.102 | 2.517 | 12.758 |
| Mercury | Hg (ppm) | 0.026 | 0.014 | 0.010 | 0.108 |
| Magnesium | Mg (wt%) | 1.155 | 0.491 | 0.441 | 5.376 |
| Manganese | Mn (ppm) | 872.561 | 204.170 | 462.645 | 1850.580 |
| Sodium | Na (wt%) | 2.051 | 0.506 | 0.533 | 3.554 |
| Phosphorus | P (wt%) | 0.095 | 0.025 | 0.046 | 0.200 |
| Lead | Pb (ppm) | 18.070 | 5.143 | 2.111 | 48.584 |
| Selenium | Se (ppm) | 0.130 | 0.070 | 0.100 | 0.868 |
| Titanium | Ti (wt%) | 0.598 | 0.107 | 0.344 | 0.967 |
| Zinc | Zn (ppm) | 98.358 | 64.569 | 52.942 | 793.523 |