| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 8.966 | 0.457 | 7.421 | 10.476 |
| Arsenic | As (ppm) | 19.135 | 57.576 | 0.824 | 568.497 |
| Calcium | Ca (wt%) | 1.504 | 0.545 | 0.611 | 3.040 |
| Copper | Cu (ppm) | 12.704 | 7.869 | 1.501 | 61.456 |
| Iron | Fe (wt%) | 2.771 | 0.617 | 0.905 | 5.058 |
| Mercury | Hg (ppm) | 0.117 | 0.247 | 0.010 | 2.489 |
| Magnesium | Mg (wt%) | 0.633 | 0.222 | 0.182 | 2.244 |
| Manganese | Mn (ppm) | 865.964 | 242.903 | 361.400 | 2333.790 |
| Sodium | Na (wt%) | 2.375 | 0.384 | 1.421 | 4.251 |
| Phosphorus | P (wt%) | 0.094 | 0.039 | 0.035 | 0.260 |
| Lead | Pb (ppm) | 55.259 | 77.396 | 10.963 | 765.888 |
| Selenium | Se (ppm) | 0.135 | 0.031 | 0.100 | 0.296 |
| Titanium | Ti (wt%) | 0.342 | 0.114 | 0.099 | 0.799 |
| Zinc | Zn (ppm) | 116.155 | 27.504 | 54.282 | 273.731 |