| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 3.092 | 0.410 | 2.260 | 4.553 |
| Arsenic | As (ppm) | 6.436 | 3.183 | 2.137 | 14.078 |
| Calcium | Ca (wt%) | 0.279 | 0.049 | 0.163 | 0.460 |
| Copper | Cu (ppm) | 7.387 | 2.284 | 3.000 | 15.191 |
| Iron | Fe (wt%) | 1.918 | 0.599 | 0.971 | 3.158 |
| Mercury | Hg (ppm) | 0.040 | 0.011 | 0.010 | 0.066 |
| Magnesium | Mg (wt%) | 0.188 | 0.039 | 0.109 | 0.290 |
| Manganese | Mn (ppm) | 968.517 | 174.004 | 535.394 | 1780.770 |
| Sodium | Na (wt%) | 0.175 | 0.039 | 0.095 | 0.302 |
| Phosphorus | P (wt%) | 0.038 | 0.004 | 0.026 | 0.055 |
| Lead | Pb (ppm) | 24.953 | 3.269 | 14.248 | 35.573 |
| Selenium | Se (ppm) | 0.635 | 0.509 | 0.300 | 3.608 |
| Titanium | Ti (wt%) | 0.233 | 0.033 | 0.173 | 0.337 |
| Zinc | Zn (ppm) | 49.328 | 8.762 | 26.888 | 67.844 |