| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 7.295 | 0.978 | 4.460 | 8.981 |
| Arsenic | As (ppm) | 5.356 | 2.121 | 1.887 | 14.434 |
| Calcium | Ca (wt%) | 1.650 | 0.475 | 1.089 | 3.222 |
| Copper | Cu (ppm) | 31.440 | 13.908 | 16.044 | 92.637 |
| Iron | Fe (wt%) | 5.057 | 0.803 | 3.508 | 6.943 |
| Mercury | Hg (ppm) | 0.074 | 0.039 | 0.018 | 0.196 |
| Magnesium | Mg (wt%) | 0.949 | 0.259 | 0.736 | 1.772 |
| Manganese | Mn (ppm) | 897.771 | 122.245 | 583.169 | 1169.080 |
| Sodium | Na (wt%) | 1.507 | 0.235 | 1.079 | 2.261 |
| Phosphorus | P (wt%) | 0.113 | 0.025 | 0.055 | 0.195 |
| Lead | Pb (ppm) | 19.278 | 6.181 | 10.932 | 44.709 |
| Selenium | Se (ppm) | 0.405 | 0.234 | 0.100 | 1.129 |
| Titanium | Ti (wt%) | 0.689 | 0.072 | 0.481 | 0.905 |
| Zinc | Zn (ppm) | 102.149 | 9.913 | 81.626 | 129.137 |