| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 5.300 | 1.016 | 3.807 | 7.846 |
| Arsenic | As (ppm) | 9.013 | 2.504 | 4.800 | 15.618 |
| Calcium | Ca (wt%) | 0.467 | 0.138 | 0.252 | 0.752 |
| Copper | Cu (ppm) | 16.842 | 4.337 | 9.034 | 31.384 |
| Iron | Fe (wt%) | 2.014 | 0.604 | 1.055 | 3.670 |
| Mercury | Hg (ppm) | 0.047 | 0.009 | 0.030 | 0.078 |
| Magnesium | Mg (wt%) | 0.450 | 0.184 | 0.188 | 0.855 |
| Manganese | Mn (ppm) | 707.414 | 158.773 | 384.628 | 1040.210 |
| Sodium | Na (wt%) | 0.731 | 0.093 | 0.502 | 0.986 |
| Phosphorus | P (wt%) | 0.065 | 0.014 | 0.039 | 0.100 |
| Lead | Pb (ppm) | 21.487 | 4.792 | 11.255 | 46.016 |
| Selenium | Se (ppm) | 0.416 | 0.144 | 0.127 | 0.930 |
| Titanium | Ti (wt%) | 0.308 | 0.018 | 0.257 | 0.370 |
| Zinc | Zn (ppm) | 77.358 | 16.465 | 43.485 | 127.348 |