| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 4.459 | 0.692 | 2.260 | 6.071 |
| Arsenic | As (ppm) | 7.434 | 2.700 | 1.979 | 19.354 |
| Calcium | Ca (wt%) | 1.249 | 0.549 | 0.135 | 2.534 |
| Copper | Cu (ppm) | 8.787 | 4.525 | 1.382 | 36.000 |
| Iron | Fe (wt%) | 2.914 | 0.642 | 0.908 | 4.772 |
| Mercury | Hg (ppm) | 0.067 | 0.020 | 0.023 | 0.127 |
| Magnesium | Mg (wt%) | 0.713 | 0.202 | 0.204 | 1.241 |
| Manganese | Mn (ppm) | 1398.250 | 350.998 | 483.417 | 2563.290 |
| Sodium | Na (wt%) | 1.005 | 0.307 | 0.480 | 1.785 |
| Phosphorus | P (wt%) | 0.054 | 0.009 | 0.019 | 0.089 |
| Lead | Pb (ppm) | 30.282 | 6.698 | 13.252 | 55.978 |
| Selenium | Se (ppm) | 0.439 | 0.211 | 0.121 | 1.456 |
| Titanium | Ti (wt%) | 0.458 | 0.141 | 0.260 | 0.909 |
| Zinc | Zn (ppm) | 386.985 | 256.573 | 78.958 | 1869.900 |