| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 3.080 | 0.639 | 0.970 | 5.749 |
| Arsenic | As (ppm) | 11.095 | 3.468 | 2.674 | 20.517 |
| Calcium | Ca (wt%) | 0.121 | 0.061 | 0.035 | 0.441 |
| Copper | Cu (ppm) | 6.699 | 1.468 | 1.422 | 12.453 |
| Iron | Fe (wt%) | 2.616 | 0.549 | 0.655 | 4.322 |
| Mercury | Hg (ppm) | 0.033 | 0.013 | 0.007 | 0.122 |
| Magnesium | Mg (wt%) | 0.181 | 0.047 | 0.049 | 0.367 |
| Manganese | Mn (ppm) | 831.049 | 242.577 | 188.498 | 1642.980 |
| Sodium | Na (wt%) | 0.095 | 0.024 | 0.032 | 0.191 |
| Phosphorus | P (wt%) | 0.038 | 0.007 | 0.013 | 0.069 |
| Lead | Pb (ppm) | 17.244 | 2.608 | 6.803 | 24.891 |
| Selenium | Se (ppm) | 0.394 | 0.100 | 0.122 | 0.697 |
| Titanium | Ti (wt%) | 0.210 | 0.035 | 0.095 | 0.324 |
| Zinc | Zn (ppm) | 60.070 | 12.232 | 19.188 | 99.118 |