| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 6.232 | 1.130 | 3.798 | 9.328 |
| Arsenic | As (ppm) | 9.329 | 2.391 | 4.285 | 15.412 |
| Calcium | Ca (wt%) | 0.548 | 0.134 | 0.278 | 1.117 |
| Copper | Cu (ppm) | 18.398 | 5.209 | 8.040 | 32.010 |
| Iron | Fe (wt%) | 2.523 | 0.702 | 1.089 | 4.434 |
| Mercury | Hg (ppm) | 0.026 | 0.011 | 0.010 | 0.056 |
| Magnesium | Mg (wt%) | 0.709 | 0.189 | 0.256 | 1.240 |
| Manganese | Mn (ppm) | 530.406 | 155.948 | 219.072 | 983.843 |
| Sodium | Na (wt%) | 0.732 | 0.156 | 0.299 | 1.037 |
| Phosphorus | P (wt%) | 0.057 | 0.015 | 0.025 | 0.093 |
| Lead | Pb (ppm) | 19.213 | 3.815 | 11.572 | 27.786 |
| Selenium | Se (ppm) | 0.427 | 0.192 | 0.101 | 0.843 |
| Titanium | Ti (wt%) | 0.315 | 0.033 | 0.234 | 0.382 |
| Zinc | Zn (ppm) | 76.145 | 22.560 | 28.283 | 121.651 |