| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 4.997 | 0.973 | 2.838 | 7.853 |
| Arsenic | As (ppm) | 3.651 | 5.872 | 0.300 | 49.030 |
| Calcium | Ca (wt%) | 1.585 | 0.451 | 0.892 | 3.807 |
| Copper | Cu (ppm) | 4.195 | 4.393 | 1.000 | 20.455 |
| Iron | Fe (wt%) | 3.256 | 0.601 | 1.645 | 5.474 |
| Mercury | Hg (ppm) | 0.045 | 0.036 | 0.010 | 0.270 |
| Magnesium | Mg (wt%) | 0.754 | 0.392 | 0.263 | 2.325 |
| Manganese | Mn (ppm) | 723.532 | 250.157 | 331.860 | 1920.000 |
| Sodium | Na (wt%) | 1.214 | 0.221 | 0.767 | 1.805 |
| Phosphorus | P (wt%) | 0.066 | 0.029 | 0.010 | 0.155 |
| Lead | Pb (ppm) | 22.425 | 6.333 | 11.296 | 61.746 |
| Selenium | Se (ppm) | 0.250 | 0.163 | 0.100 | 1.000 |
| Titanium | Ti (wt%) | 0.609 | 0.158 | 0.341 | 1.211 |
| Zinc | Zn (ppm) | 63.564 | 27.548 | 27.580 | 135.000 |