| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 1.261 | 0.611 | 0.377 | 3.673 |
| Arsenic | As (ppm) | 1.755 | 1.196 | 0.417 | 8.558 |
| Calcium | Ca (wt%) | 0.029 | 0.009 | 0.012 | 0.064 |
| Copper | Cu (ppm) | 3.015 | 1.144 | 1.084 | 7.641 |
| Iron | Fe (wt%) | 0.680 | 0.270 | 0.292 | 1.723 |
| Mercury | Hg (ppm) | 0.024 | 0.008 | 0.010 | 0.047 |
| Magnesium | Mg (wt%) | 0.020 | 0.009 | 0.003 | 0.055 |
| Manganese | Mn (ppm) | 166.789 | 38.118 | 39.840 | 282.979 |
| Sodium | Na (wt%) | 0.022 | 0.009 | 0.006 | 0.064 |
| Phosphorus | P (wt%) | 0.018 | 0.005 | 0.004 | 0.036 |
| Lead | Pb (ppm) | 18.047 | 2.529 | 9.599 | 26.142 |
| Selenium | Se (ppm) | 0.155 | 0.044 | 0.100 | 0.356 |
| Titanium | Ti (wt%) | 0.400 | 0.051 | 0.180 | 0.541 |
| Zinc | Zn (ppm) | 11.139 | 3.009 | 4.964 | 21.723 |