| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 5.275 | 1.141 | 1.639 | 8.841 |
| Arsenic | As (ppm) | 7.737 | 1.788 | 2.535 | 12.411 |
| Calcium | Ca (wt%) | 1.587 | 1.810 | 0.056 | 8.449 |
| Copper | Cu (ppm) | 26.420 | 18.953 | 5.672 | 139.636 |
| Iron | Fe (wt%) | 3.014 | 0.852 | 1.194 | 7.141 |
| Mercury | Hg (ppm) | 0.033 | 0.012 | 0.015 | 0.095 |
| Magnesium | Mg (wt%) | 0.643 | 0.311 | 0.095 | 1.483 |
| Manganese | Mn (ppm) | 1308.570 | 920.009 | 474.112 | 6684.380 |
| Sodium | Na (wt%) | 0.785 | 0.428 | 0.072 | 2.041 |
| Phosphorus | P (wt%) | 0.058 | 0.016 | 0.018 | 0.108 |
| Lead | Pb (ppm) | 13.263 | 4.429 | 3.869 | 24.836 |
| Selenium | Se (ppm) | 0.328 | 0.112 | 0.107 | 0.589 |
| Titanium | Ti (wt%) | 0.289 | 0.098 | 0.102 | 0.741 |
| Zinc | Zn (ppm) | 96.396 | 34.451 | 48.907 | 238.635 |