| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 1.453 | 0.473 | 0.571 | 3.972 |
| Arsenic | As (ppm) | 3.513 | 1.054 | 1.996 | 11.739 |
| Calcium | Ca (wt%) | 0.037 | 0.027 | 0.005 | 0.155 |
| Copper | Cu (ppm) | 4.629 | 1.151 | 1.748 | 11.475 |
| Iron | Fe (wt%) | 1.112 | 0.301 | 0.377 | 2.724 |
| Mercury | Hg (ppm) | 0.017 | 0.007 | 0.010 | 0.051 |
| Magnesium | Mg (wt%) | 0.062 | 0.034 | 0.021 | 0.289 |
| Manganese | Mn (ppm) | 295.705 | 132.602 | 60.201 | 1616.350 |
| Sodium | Na (wt%) | 0.031 | 0.018 | 0.007 | 0.121 |
| Phosphorus | P (wt%) | 0.011 | 0.004 | 0.003 | 0.027 |
| Lead | Pb (ppm) | 15.526 | 4.173 | 4.124 | 33.171 |
| Selenium | Se (ppm) | 0.147 | 0.028 | 0.100 | 0.250 |
| Titanium | Ti (wt%) | 0.390 | 0.093 | 0.157 | 0.661 |
| Zinc | Zn (ppm) | 21.407 | 5.532 | 6.127 | 46.926 |