| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 3.273 | 0.524 | 0.957 | 4.516 |
| Arsenic | As (ppm) | 8.616 | 2.348 | 2.515 | 18.317 |
| Calcium | Ca (wt%) | 17.126 | 4.667 | 5.616 | 27.871 |
| Copper | Cu (ppm) | 15.202 | 3.444 | 7.263 | 29.495 |
| Iron | Fe (wt%) | 1.638 | 0.265 | 0.486 | 2.182 |
| Mercury | Hg (ppm) | 0.024 | 0.015 | 0.010 | 0.103 |
| Magnesium | Mg (wt%) | 0.514 | 0.089 | 0.309 | 0.870 |
| Manganese | Mn (ppm) | 591.378 | 136.317 | 265.204 | 1196.630 |
| Sodium | Na (wt%) | 0.119 | 0.051 | 0.039 | 0.280 |
| Phosphorus | P (wt%) | 0.040 | 0.007 | 0.024 | 0.077 |
| Lead | Pb (ppm) | 24.624 | 6.947 | 11.671 | 52.785 |
| Selenium | Se (ppm) | 0.355 | 0.095 | 0.136 | 0.938 |
| Titanium | Ti (wt%) | 0.186 | 0.037 | 0.051 | 0.270 |
| Zinc | Zn (ppm) | 40.732 | 7.080 | 22.400 | 64.082 |