| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 3.397 | 0.719 | 2.701 | 6.160 |
| Arsenic | As (ppm) | 6.123 | 2.757 | 2.681 | 18.158 |
| Calcium | Ca (wt%) | 0.251 | 0.067 | 0.164 | 0.469 |
| Copper | Cu (ppm) | 7.057 | 1.639 | 4.458 | 13.674 |
| Iron | Fe (wt%) | 3.670 | 0.708 | 1.617 | 6.301 |
| Mercury | Hg (ppm) | 0.196 | 0.086 | 0.090 | 0.569 |
| Magnesium | Mg (wt%) | 0.197 | 0.037 | 0.119 | 0.326 |
| Manganese | Mn (ppm) | 739.765 | 250.193 | 330.625 | 1825.260 |
| Sodium | Na (wt%) | 0.395 | 0.058 | 0.329 | 0.572 |
| Phosphorus | P (wt%) | 0.064 | 0.026 | 0.010 | 0.188 |
| Lead | Pb (ppm) | 38.749 | 20.890 | 17.561 | 129.606 |
| Selenium | Se (ppm) | 0.350 | 0.132 | 0.125 | 1.082 |
| Titanium | Ti (wt%) | 0.837 | 0.188 | 0.533 | 1.440 |
| Zinc | Zn (ppm) | 62.510 | 14.033 | 39.918 | 146.205 |