| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 7.684 | 0.995 | 2.535 | 10.781 |
| Arsenic | As (ppm) | 4.517 | 3.713 | 0.449 | 29.918 |
| Calcium | Ca (wt%) | 3.925 | 2.230 | 0.163 | 21.436 |
| Copper | Cu (ppm) | 58.540 | 36.099 | 9.049 | 187.532 |
| Iron | Fe (wt%) | 5.314 | 1.686 | 1.255 | 10.073 |
| Mercury | Hg (ppm) | 0.036 | 0.028 | 0.010 | 0.410 |
| Magnesium | Mg (wt%) | 1.850 | 0.799 | 0.174 | 5.926 |
| Manganese | Mn (ppm) | 1022.460 | 321.466 | 215.745 | 3147.920 |
| Sodium | Na (wt%) | 1.843 | 0.316 | 0.090 | 2.808 |
| Phosphorus | P (wt%) | 0.069 | 0.020 | 0.017 | 0.140 |
| Lead | Pb (ppm) | 8.259 | 2.969 | 2.095 | 27.836 |
| Selenium | Se (ppm) | 0.433 | 0.506 | 0.100 | 3.689 |
| Titanium | Ti (wt%) | 0.678 | 0.182 | 0.177 | 1.316 |
| Zinc | Zn (ppm) | 104.964 | 32.531 | 45.001 | 318.313 |