| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 5.414 | 0.351 | 4.094 | 6.612 |
| Arsenic | As (ppm) | 2.668 | 1.108 | 0.459 | 6.505 |
| Calcium | Ca (wt%) | 1.297 | 0.257 | 0.702 | 2.039 |
| Copper | Cu (ppm) | 17.171 | 5.771 | 6.319 | 42.018 |
| Iron | Fe (wt%) | 2.765 | 0.393 | 1.686 | 5.185 |
| Mercury | Hg (ppm) | 0.129 | 0.137 | 0.017 | 1.318 |
| Magnesium | Mg (wt%) | 0.523 | 0.068 | 0.302 | 0.773 |
| Manganese | Mn (ppm) | 1068.330 | 281.458 | 559.189 | 2321.330 |
| Sodium | Na (wt%) | 1.687 | 0.168 | 1.245 | 2.322 |
| Phosphorus | P (wt%) | 0.062 | 0.010 | 0.032 | 0.111 |
| Lead | Pb (ppm) | 53.636 | 26.857 | 22.899 | 203.056 |
| Selenium | Se (ppm) | 0.297 | 0.127 | 0.105 | 0.836 |
| Titanium | Ti (wt%) | 0.532 | 0.116 | 0.302 | 1.087 |
| Zinc | Zn (ppm) | 61.539 | 16.901 | 22.141 | 146.484 |